目录
第一篇
总说明 ---------------------------------------------------------------- - 7 -
2.4.3.3地下水水质 ------------------------------------------------------------------------ - 14 - 2.5沿线地面环境及周边建筑物 --------------------------------------- - 14 - 2.6沿途管线 ------------------------------------------------------- - 14 - 2.7交通、动力及通讯 ----------------------------------------------- - 14 -
1编制原则及依据 -------------------------------------------------------------------- - 7 -
1.1编制原则 --------------------------------------------------------- - 7 - 1.2编制依据 --------------------------------------------------------- - 7 - 1.3采用的主要标准和规范 --------------------------------------------- - 7 -
3施工目标 --------------------------------------------------------------------------- - 15 -
3.1工期目标 ------------------------------------------------------- - 15 - 3.2质量目标 ------------------------------------------------------- - 15 - 3.3安全目标 ------------------------------------------------------- - 15 - 3.4环境保护目标 --------------------------------------------------- - 15 - 3.5文明施工目标 --------------------------------------------------- - 15 -
2工程概况 ----------------------------------------------------------------------------- - 8 -
2.1工程范围及工程位置 ----------------------------------------------- - 8 -
2.1.1工程范围----------------------------------------------------------------------------------- - 8 - 2.2.2工程位置 ------------------------------------------------------------------------------------ - 9 - 2.2设计简况 --------------------------------------------------------- - 9 - 2.2.1醉白池车站 ------------------------------------------------------------------------------- - 9 - 2.2.2盾构区间----------------------------------------------------------------------------------- - 9 - 2.2.2.1工程规模 ---------------------------------------------------------------------------- - 9 - 2.2.2.2隧道线形 ---------------------------------------------------------------------------- - 9 - 2.3地形与地质 ------------------------------------------------------ - 11 - 2.3.1醉白池站---------------------------------------------------------------------------------- - 11 -
2.3.1.1土层构成 --------------------------------------------------------------------------- - 11 - 2.3.1.2土层主要物理力学性质 --------------------------------------------------------- - 12 - 2.3.2松江体育中心站～醉白池站区间 --------------------------------------------------- - 12 - 2.3.2.1土层构成 --------------------------------------------------------------------------- - 12 - 2.3.2.2土层主要物理力学性质 --------------------------------------------------------- - 12 - 2.3.3醉白池站～松江南站站区间 --------------------------------------------------------- - 12 - 2.3.3.1土层构成 --------------------------------------------------------------------------- - 12 - 2.3.3.2土层主要物理力学性质 --------------------------------------------------------- - 13 - 2.4水文地质条件 ---------------------------------------------------- - 13 - 2.4.1醉白池站---------------------------------------------------------------------------------- - 13 -
2.4.1.1地下水类型 ------------------------------------------------------------------------ - 13 - 2.4.1.2地下水水位 ------------------------------------------------------------------------ - 13 - 2.4.1.3地下水水质 ------------------------------------------------------------------------ - 13 - 2.4.2松江体育中心站～醉白池站区间 --------------------------------------------------- - 13 - 2.4.2.1地下水类型 ------------------------------------------------------------------------ - 13 - 2.4.2.2地下水水位 ------------------------------------------------------------------------ - 13 - 2.4.2.3地下水水质 ------------------------------------------------------------------------ - 14 - 2.4.3醉白池站～松江南站站区间 --------------------------------------------------------- - 14 - 2.4.3.1地下水类型 ------------------------------------------------------------------------ - 14 - 2.4.3.2地下水水位 ------------------------------------------------------------------------ - 14 -
4主要项目管理人员配备的原则 ------------------------------------------------ - 15 - 5远程监控及集中管理 ------------------------------------------------------------ - 15 - 6工程风险分析及主要应对措施 ------------------------------------------------ - 15 -
6.1工程风险分析 --------------------------------------------------- - 16 - 6.2应急处理组织机构 ----------------------------------------------- - 16 - 6.3应急处理组织措施 ----------------------------------------------- - 16 - 6.4应急处理工作流程 ----------------------------------------------- - 16 -
第二篇 施工组织设计 ------------------------------------------------------------ - 16 - 1总体施工方案 --------------------------------------------------------------------- - 16 -
1.1车站施工方案 --------------------------------------------------- - 18 -
1.1.1醉白池站施工流程及安排 ------------------------------------------------------------ - 18 - 1.1.2醉白池站施工方案 --------------------------------------------------------------------- - 18 - 1.2盾构区间施工方案 ----------------------------------------------- - 18 - 1.2.1盾构区间施工流程及安排 ------------------------------------------------------------- - 18 - 1.2.2盾构机来源及基本功能 --------------------------------------------------------------- - 19 - 1.2 3号出入口连接通道 ---------------------------------------------------------------------- - 19 -
2施工筹划 --------------------------------------------------------------------------- - 19 -
2.1标段总体施工进度计划 ------------------------------------------- - 19 - 2.1.1总工期及单位工程工期 --------------------------------------------------------------- - 19 -
2.1.1.1总工期 ------------------------------------------------------------------------------ - 19 - 2.1.1.2主要节点工期 --------------------------------------------------------------------- - 19 - 2.1.2施工总进度计划 ------------------------------------------------------------------------ - 20 - 2.1.3施工进度保证措施 --------------------------------------------------------------------- - 20 - 2.1.3.1项目计划管理及控制方法 ------------------------------------------------------ - 20 - 2.1.3.2具体的进度保证措施 ------------------------------------------------------------ - 20 -
- 1 -
2.2劳动力组织计划 -------------------------------------------------- - 21 - 2.3材料供应计划 ---------------------------------------------------- - 22 - 2.4用电、用水计划 -------------------------------------------------- - 22 - 2.5施工场地布置 ---------------------------------------------------- - 22 - 2.5.1施工场地总平面布置 ------------------------------------------------------------------ - 22 -
2.5.1.1布置原则 --------------------------------------------------------------------------- - 22 - 2.5.1.2工地围闭 --------------------------------------------------------------------------- - 22 - 2.5.1.3生活设施布置 --------------------------------------------------------------------- - 22 - 2.5.1.4结构施工场地生产设置布置 --------------------------------------------------- - 22 - 2.5.1.5盾构施工场地生产设置布置 --------------------------------------------------- - 23 - 2.5.1.6施工通讯 --------------------------------------------------------------------------- - 23 - 2.5.1.7施工用电 --------------------------------------------------------------------------- - 23 - 2.5.1.8施工用水 --------------------------------------------------------------------------- - 23 - 2.5.1.9临时道路 --------------------------------------------------------------------------- - 23 - 2.5.1.10施工排水 -------------------------------------------------------------------------- - 23 - 2.5.2隧道内施工布置 ------------------------------------------------------------------------ - 23 - 2.5.2.1钢轨布置 --------------------------------------------------------------------------- - 23 - 2.5.2.2人行走道 --------------------------------------------------------------------------- - 23 - 2.5.2.3隧道排水 --------------------------------------------------------------------------- - 23 - 2.5.2.4隧道通讯 --------------------------------------------------------------------------- - 23 - 2.5.2.5隧道通风 --------------------------------------------------------------------------- - 23 - 2.6对周围环境、指定承包商及联系承包商的配合和协调措施 -------------- - 24 - 2.6.1对前期工程协调 ------------------------------------------------------------------------ - 24 - 2.6.2对大型设施的运输路径协调和安装及测试的配合 ------------------------------ - 24 - 2.6.3对车站承包商的配合和协调 --------------------------------------------------------- - 24 - 2.6.4与指定承包商、联系承包商的协调和配合 --------------------------------------- - 24 - 2.6.5对周围环境的协调和配合 ------------------------------------------------------------ - 25 - 2.6.5.1施工期间的交通组织 ------------------------------------------------------------ - 25 - 2.6.5.2与管线监管单位的协调及对其的保护 --------------------------------------- - 25 - 2.6.5.3与邻近建（构）筑物、公用设施等监管单位协调及对其的保护 ------ - 25 -
3.2.2穿越明、暗浜、厚填土区域 --------------------------------------------------------- - 28 - 3.2.3可能穿越浅层沼气 --------------------------------------------------------------------- - 28 - 3.2.4盾构在软粘性土、粉性土、（微）承压水层及液化地层中掘进 ------------- - 29 - 3.2.5盾构穿越运营松江火车站 ------------------------------------------------------------ - 30 - 3.2.5.1保护要求 --------------------------------------------------------------------------- - 30 - 3.2.5.2施工准备 --------------------------------------------------------------------------- - 30 - 3.2.5.3盾构推进控制标准 --------------------------------------------------------------- - 31 - 3.2.5.4路基预加固 ------------------------------------------------------------------------ - 31 - 3.2.5.5穿越施工技术措施 --------------------------------------------------------------- - 33 - 3.2.5.6后期沉降控制 --------------------------------------------------------------------- - 34 - 3.2.5.7监测 --------------------------------------------------------------------------------- - 35 - 3.2.6穿越密集地面构（建）筑群 --------------------------------------------------------- - 37 - 3.2.7穿越密集管线区 ------------------------------------------------------------------------ - 38 - 3.2.8盾构下穿现状河道 --------------------------------------------------------------------- - 38 - 3.2.9浅覆土施工 ------------------------------------------------------------------------------ - 39 - 3.2.10盾构大纵坡段施工 ------------------------------------------------------------------- - 39 - 3.2.11小半径曲线掘进施工 ---------------------------------------------------------------- - 40 -
4醉白池车站各分部分项施工技术和措施 ------------------------------------ - 40 -
4.1人民河筑坝断航施工方案 ----------------------------------------- - 40 -
4.1.1施工策划 --------------------------------------------------------------------------------- - 40 - 4.1.2施工方案 --------------------------------------------------------------------------------- - 41 - 4.1.3施工流程 --------------------------------------------------------------------------------- - 41 - 4.1.4施工准备 --------------------------------------------------------------------------------- - 41 - 4.1.5导流明渠施工 --------------------------------------------------------------------------- - 41 - 4.1.5.1导流明渠布局及断面类型 ------------------------------------------------------ - 41 - 4.1.5.2导流明渠施工 --------------------------------------------------------------------- - 42 - 4.1.6坝体回填土夯实 ------------------------------------------------------------------------ - 42 - 4.1.7钢板桩打入 ------------------------------------------------------------------------------ - 42 - 4.1.8防渗与堵漏 ------------------------------------------------------------------------------ - 43 - 4.1.9钢板桩拔除 ------------------------------------------------------------------------------ - 43 - 4.1.10监测 -------------------------------------------------------------------------------------- - 43 - 4.1.11工程施工影响及防控对策 ---------------------------------------------------------- - 43 - 4.1.12质量保证措施 ------------------------------------------------------------------------- - 44 - 4.1.13安全文明保证措施 ------------------------------------------------------------------- - 44 - 4.2地下连续墙施工 ------------------------------------------------- - 44 - 4.2.1设备选型 --------------------------------------------------------------------------------- - 45 - 4.2.2地下连续墙施工采用的工法 --------------------------------------------------------- - 45 - 4.2.3地下连续墙施工管理 ------------------------------------------------------------------ - 45 - 4.2.4地下连续墙施工工序流程 ------------------------------------------------------------ - 45 -
3工程特点、重难点及针对措施 ------------------------------------------------- - 25 -
3.1车站工程特点、重难点及针对性措施 -------------------------------- - 25 -
3.1.1基坑围护结构形式多 ------------------------------------------------------------------ - 25 - 3.1.2人民河中施工 --------------------------------------------------------------------------- - 25 - 3.1.3基坑开挖深度大，施工风险大 ------------------------------------------------------ - 26 - 3.1.4基坑周边建（构）筑物、管线的保护 --------------------------------------------- - 26 - 3.1.5不良地层施工 --------------------------------------------------------------------------- - 27 - 3.2盾构区间工程特点、重难点及针对性措施 ---------------------------- - 27 - 3.2.1盾构掘进长度大，工期紧 ------------------------------------------------------------ - 27 -
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4.2.5地下连续墙施工工艺及技术措施 --------------------------------------------------- - 45 - 4.2.5.1导墙施工 --------------------------------------------------------------------------- - 45 - 4.2.5.2泥浆系统 --------------------------------------------------------------------------- - 47 - 4.2.5.3开挖槽段 --------------------------------------------------------------------------- - 48 - 4.2.5.4 槽段检验 --------------------------------------------------------------------------- - 49 - 4.2.5.5清底换浆 --------------------------------------------------------------------------- - 49 - 4.2.5.6 钢筋笼制作 ------------------------------------------------------------------------ - 49 - 4.2.5.7刷壁---------------------------------------------------------------------------------- - 50 - 4.2.5.8钢筋笼的吊运 --------------------------------------------------------------------- - 50 - 4.2.5.9吊装锁口管及反力箱 ------------------------------------------------------------ - 50 - 4.2.5.10浇注水下混凝土 ----------------------------------------------------------------- - 51 - 4.2.5.11顶拔锁口管及反力箱 ----------------------------------------------------------- - 51 - 4.2.5.12 墙趾注浆加固 ------------------------------------------------------------------- - 51 - 4.3 SMW工法桩施工 -------------------------------------------------- - 51 - 4.3.1施工流程---------------------------------------------------------------------------------- - 51 - 4.3.2各工序技术措施 ------------------------------------------------------------------------ - 51 - 4.3.3主要技术参数 --------------------------------------------------------------------------- - 52 - 4.3.4施工要点---------------------------------------------------------------------------------- - 52 - 4.3.5质量标准---------------------------------------------------------------------------------- - 53 - 4.4钻孔灌注桩、格构柱施工 ------------------------------------------ - 53 - 4.4.1施工工艺---------------------------------------------------------------------------------- - 53 - 4.4.2技术保证措施 --------------------------------------------------------------------------- - 55 - 4.5三轴搅拌桩加固施工 ---------------------------------------------- - 56 - 4.6高压旋喷桩施工 -------------------------------------------------- - 56 - 4.6.1施工流程---------------------------------------------------------------------------------- - 56 - 4.6.2施工方法---------------------------------------------------------------------------------- - 56 - 4.6.3施工要点---------------------------------------------------------------------------------- - 56 - 4.7降水施工 -------------------------------------------------------- - 57 - 4.7.1地质条件分析 --------------------------------------------------------------------------- - 57 - 4.7.2 降水目的 --------------------------------------------------------------------------------- - 57 - 4.7.3基坑底板稳定性分析 ------------------------------------------------------------------ - 57 - 4.7.3.1第⑦层承压含水层 --------------------------------------------------------------- - 57 - 4.7.3.2 ⑤2t层以下的⑤2层微承压含水层 ----------------------------------------- - 58 - 4.7.3.3 ⑤2t层以上的⑤2层微承压含水层 ----------------------------------------- - 58 - 4.7.4降水工程难点分析与对策 ------------------------------------------------------------ - 58 - 4.7.4.1工程难点分析 --------------------------------------------------------------------- - 58 - 4.7.4.2降水对策 --------------------------------------------------------------------------- - 59 - 4.7.5水文地质计算 --------------------------------------------------------------------------- - 59 - 4.7.5.1 基坑降水水文地质概念模型 -------------------------------------------------- - 59 -
- 3 -
4.7.5.2减压（回灌）井分析计算 ------------------------------------------------------ - 59 - 4.7.5.3 混合井分析计算 ----------------------------------------------------------------- - 67 - 4.7.5.4针对现场勘探孔冒水所做处理 ------------------------------------------------ - 67 - 4.7.5.5 降水井工作量 -------------------------------------------------------------------- - 68 - 4.7.6降水井施工 ------------------------------------------------------------------------------ - 68 - 4.7.7降水试运行 ------------------------------------------------------------------------------ - 70 - 4.7.8降水正式运行 --------------------------------------------------------------------------- - 70 - 4.7.9电路系统布置 --------------------------------------------------------------------------- - 70 - 4.7.10 排水系统布置 ------------------------------------------------------------------------- - 71 - 4.7.11井管保护 -------------------------------------------------------------------------------- - 71 - 4.8基坑开挖及支撑施工 --------------------------------------------- - 71 -
4.8.1基坑挖土方案 --------------------------------------------------------------------------- - 71 - 4.8.2开挖准备工作 --------------------------------------------------------------------------- - 71 - 4.8.3基坑开挖 --------------------------------------------------------------------------------- - 71 - 4.8.4钢支撑安装 ------------------------------------------------------------------------------ - 72 - 4.8.5混凝土支撑施工 ------------------------------------------------------------------------ - 73 - 4.8.6基坑开挖与支撑的技术措施 --------------------------------------------------------- - 74 - 4.8.6.1设置坑内外排水系统 ------------------------------------------------------------ - 74 - 4.8.6.3斜撑体系支点采用斜撑预埋件和钢支座 ------------------------------------ - 74 - 4.8.7基坑开挖与支撑的技术要点 --------------------------------------------------------- - 74 - 4.8.8预防措施 --------------------------------------------------------------------------------- - 75 - 4.9结构施工 ------------------------------------------------------- - 75 - 4.9.1素砼垫层施工 --------------------------------------------------------------------------- - 75 - 4.9.2结构施工 --------------------------------------------------------------------------------- - 75 - 4.9.3预埋钢洞门 ------------------------------------------------------------------------------ - 77 - 4.9.4杂散电流防护工程 --------------------------------------------------------------------- - 78 - 4.9.6综合接地网工程 ------------------------------------------------------------------------ - 78 - 4.9.5人防结构施工 --------------------------------------------------------------------------- - 78 - 4.10防水施工 ------------------------------------------------------ - 78 - 4.10.1地下墙防水----------------------------------------------------------------------------- - 78 - 4.10.2结构自防水施工 ---------------------------------------------------------------------- - 78 - 4.10.3施工缝和诱导缝防水施工 ---------------------------------------------------------- - 79 - 4.10.4顶板附加防水层 ---------------------------------------------------------------------- - 79 - 4.10.5渗漏水的治理 ------------------------------------------------------------------------- - 80 - 4.11 3号出入口顶管施工 -------------------------------------------- - 80 - 4.11.1顶管施工流程 ------------------------------------------------------------------------- - 80 - 4.11.2顶进前的施工准备工作 ------------------------------------------------------------- - 80 - 4.11.3顶管出洞段施工 ---------------------------------------------------------------------- - 81 - 4.11.4顶管正常段顶进施工 ---------------------------------------------------------------- - 82 -
4.11.5顶管进洞段顶进施工 ----------------------------------------------------------------- - 82 - 4.11.6顶管施工测量 -------------------------------------------------------------------------- - 83 - 4.12施工监测 ------------------------------------------------------- - 83 - 4.12.1监测方案制定的依据 ----------------------------------------------------------------- - 83 - 4.12.2监测工作的目的及意义 -------------------------------------------------------------- - 83 - 4.12.3监测工作的内容和项目 -------------------------------------------------------------- - 83 - 4.12.3.1主要内容 -------------------------------------------------------------------------- - 83 - 4.12.3.2 监测项目 ------------------------------------------------------------------------- - 83 - 4.12.4 监测的方法、仪器和监测点布置的原则、埋设方法 ------------------------- - 83 - 4.12.4.1 围护墙（内部）水平位移监测（测斜） ---------------------------------- - 83 - 4.12.4.2 围护墙顶部水平位移监测 ---------------------------------------------------- - 84 - 4.12.4.3 围护墙顶部垂直位移(沉降)监测 ------------------------------------------- - 84 - 4.12.4.4 支撑轴力监测 ------------------------------------------------------------------- - 84 - 4.12.4.5 地下水位监测 ------------------------------------------------------------------- - 84 - 4.12.4.6 基坑周围地表沉降监测 ------------------------------------------------------- - 84 - 4.12.4.7 周围建筑物沉降监测 ---------------------------------------------------------- - 84 - 4.12.4.8 周围地下管线沉降监测 ------------------------------------------------------- - 84 - 4.12.5 监测频率 ------------------------------------------------------------------------------- - 85 - 4.12.6 报警值 ---------------------------------------------------------------------------------- - 85 - 4.12.7 信息反馈 ------------------------------------------------------------------------------- - 85 - 4.13施工测量 ------------------------------------------------------- - 85 - 4.13.1 平面控制 ------------------------------------------------------------------------------- - 85 - 4.13.2 高程控制 ------------------------------------------------------------------------------- - 85 - 4.13.3 测量人员与管理 ---------------------------------------------------------------------- - 85 -
5.3洞口土体搅拌桩+旋喷桩加固施工 ---------------------------------- - 87 - 5.4盾构出洞及初始段掘进 ------------------------------------------- - 88 -
5.4.1盾构掘进施工工艺流程 --------------------------------------------------------------- - 88 - 5.4.2洞口密封装置 --------------------------------------------------------------------------- - 89 - 5.4.3负环管片的拼装 ------------------------------------------------------------------------ - 89 - 5.4.4洞门混凝土凿除 ------------------------------------------------------------------------ - 89 - 5.4.5盾构出洞及初始段掘进 --------------------------------------------------------------- - 89 - 5.5盾构正常段施工 ------------------------------------------------- - 90 - 5.5.1参数设定和优化 ------------------------------------------------------------------------ - 90 -
5.5.1.1参数设定 --------------------------------------------------------------------------- - 90 - 5.5.1.2参数优化 --------------------------------------------------------------------------- - 90 - 5.5.2盾构正常段掘进 ------------------------------------------------------------------------ - 90 - 5.5.2.1盾构正常段掘进施工 ------------------------------------------------------------ - 90 - 5.5.2.2掘进循环时间安排 --------------------------------------------------------------- - 91 - 5.5.2.3掘进中的沉降控制措施 --------------------------------------------------------- - 91 - 5.5.3管片拼装 --------------------------------------------------------------------------------- - 91 - 5.5.3.1管片的验收和堆放 --------------------------------------------------------------- - 91 - 5.5.3.2管片的拼装形式及连接 --------------------------------------------------------- - 91 - 5.5.3.3管片的拼装 ------------------------------------------------------------------------ - 92 - 5.5.4定位棒施工 ------------------------------------------------------------------------------ - 92 - 5.5.5 同步注浆和二次注浆 ----------------------------------------------------------------- - 93 - 5.5.5.1注浆方式 --------------------------------------------------------------------------- - 93 - 5.5.5.2注浆设备 --------------------------------------------------------------------------- - 93 - 5.5.5.3注浆参数的设定 ------------------------------------------------------------------ - 93 - 5.5.5.4注浆材料及配合比选择 --------------------------------------------------------- - 93 - 5.5.5.5同步注浆施工 --------------------------------------------------------------------- - 93 - 5.5.5.6二次注浆 --------------------------------------------------------------------------- - 94 - 5.5.6 盾尾油脂的加注 ----------------------------------------------------------------------- - 94 - 5.5.7 纠偏控制 -------------------------------------------------------------------------------- - 94 - 5.5.8 施工运输 -------------------------------------------------------------------------------- - 94 - 5.5.8.1水平及垂直运输方案 ------------------------------------------------------------ - 94 - 5.5.8.2运输轨道布置 --------------------------------------------------------------------- - 94 - 5.5.8.3弃土外运 --------------------------------------------------------------------------- - 94 - 5.5.8.4运输设备配置 --------------------------------------------------------------------- - 94 - 5.5.8.5最大运输能力的验算 ------------------------------------------------------------ - 95 - 5.5.9 施工通风、照明及防排水 ----------------------------------------------------------- - 95 - 5.5.9.1施工通风 --------------------------------------------------------------------------- - 95 - 5.5.9.2施工照明 --------------------------------------------------------------------------- - 95 - 5.5.9.3施工防排水 ------------------------------------------------------------------------ - 95 -
5盾构区间施工技术及措施 ------------------------------------------------------- - 86 -
5.1盾构施工流程 ---------------------------------------------------- - 86 - 5.2施工准备 -------------------------------------------------------- - 86 -
5.2.1地下管线和建(构)筑物的调查 ------------------------------------------------------ - 86 - 5.2.2补充地质钻探 --------------------------------------------------------------------------- - 86 - 5.2.3发射架安装 ------------------------------------------------------------------------------ - 86 - 5.2.4盾构机进场、下井、组装及调试 --------------------------------------------------- - 86 - 5.2.4.1盾构机进场 ------------------------------------------------------------------------ - 86 - 5.2.4.2盾构机下井 ------------------------------------------------------------------------ - 86 - 5.2.4.3盾构机组装 ------------------------------------------------------------------------ - 86 - 5.2.4.4盾构机调试 ------------------------------------------------------------------------ - 87 - 5.2.5反力架安装 ------------------------------------------------------------------------------ - 87 - 5.2.6技术交底及人员培训 ------------------------------------------------------------------ - 87 -
- 4 -
5.6盾构进洞 -------------------------------------------------------- - 95 - 5.6.1 接收井的准备工作 --------------------------------------------------------------------- - 95 - 5.6.2 盾构进洞段掘进 ------------------------------------------------------------------------ - 95 - 5.7 盾构机的拆卸及转场 --------------------------------------------- - 96 - 5.7.1 吊装设备 --------------------------------------------------------------------------------- - 96 - 5.7.2 拆卸顺序 --------------------------------------------------------------------------------- - 96 - 5.7.3 拆卸技术措施 --------------------------------------------------------------------------- - 96 - 5.8 防迷流 --------------------------------------------------------- - 96 - 5.9 井接头施工 ----------------------------------------------------- - 96 - 5.10区间联络通道及泵站施工 ----------------------------------------- - 97 - 5.10.1概况 -------------------------------------------------------------------------------------- - 97 - 5.10.2施工方案的选择 ----------------------------------------------------------------------- - 97 - 5.10.2.1冻结土体加固、矿山法暗挖构筑方案 ---------------------------------------- - 97 - 5.10.2.2联络通道主要施工顺序 -------------------------------------------------------- - 97 - 5.10.2.3冻结帷幕的设计 ----------------------------------------------------------------- - 97 - 5.10.3冻结孔布置及制冷设计 -------------------------------------------------------------- - 98 - 5.10.3.1冻结孔、测温孔与卸压孔的布置 -------------------------------------------- - 98 - 5.10.3.2制冷设计 -------------------------------------------------------------------------- - 98 - 5.10.4冻结孔施工方案 ----------------------------------------------------------------------- - 98 - 5.10.4.1冻结孔施工 ----------------------------------------------------------------------- - 98 - 5.10.4.2冻结孔施工顺序 ----------------------------------------------------------------- - 99 - 5.10.4.3钻孔偏斜和终孔间距 ----------------------------------------------------------- - 99 - 5.10.4.4冻结孔钻进与冻结管设置 ----------------------------------------------------- - 99 - 5.10.5冷冻站安装 ----------------------------------------------------------------------------- - 99 - 5.10.5.1冻结站布置与设备安装 -------------------------------------------------------- - 99 - 5.10.5.2管路连接、保温与测试仪表 ------------------------------------------------ - 100 - 5.10.6积极冻结与维护冻结 --------------------------------------------------------------- - 100 - 5.10.6.1冻结系统试运转与积极冻结 -------------------------------------------------- - 100 - 5.10.6.2试挖与维持冻结 ----------------------------------------------------------------- - 100 - 5.10.6.3冻结效果的监测及完成的参数指标 ----------------------------------------- - 100 - 5.10.6.4冻结质量控制程序 -------------------------------------------------------------- - 100 - 5.10.7开挖与构筑施工方案 --------------------------------------------------------------- - 100 - 5.10.7.1开挖顺序 ------------------------------------------------------------------------ - 100 - 5.10.7.2支护方式 ------------------------------------------------------------------------ - 101 - 5.10.7.3开挖与构筑施工 --------------------------------------------------------------- - 101 - 5.10.8强制解冻控制融沉 ------------------------------------------------------------------ - 104 - 5.10.8.1强制解冻原则 ------------------------------------------------------------------ - 104 - 5.10.8.2融沉注浆施工流程 ------------------------------------------------------------ - 104 - 5.10.8.3注浆管布置 --------------------------------------------------------------------- - 104 -
- 5 -
5.10.8.4注浆工艺 ------------------------------------------------------------------------- 104 - 5.10.8.5强制解冻质量保证措施 ------------------------------------------------------- 105 - 5.10.9监测监控设计 --------------------------------------------------------------------------- 105 - 5.10.9.1监测内容 ------------------------------------------------------------------------- 105 - 5.10.9.2冻结系统监测说明 ------------------------------------------------------------- 105 - 5.10.9.3冻土帷幕监测说明 ------------------------------------------------------------- 105 - 5.10.9.4地表和隧道变形监测说明 ---------------------------------------------------- 106 - 5.10.10施工风险分析和主要技术措施 --------------------------------------------------- 107 - 5.10.10.1冻结孔施工风险分析及主要技术措施 ------------------------------------ 107 - 5.10.10.2冻结施工风险分析及主要技术措施 --------------------------------------- 107 - 5.10.10.3防止冻胀、融沉主要技术措施 --------------------------------------------- 108 - 5.10.11施工应急预案 ------------------------------------------------------------------------ 108 - 5.10.11.1冻结孔施工应急预案 --------------------------------------------------------- 108 - 5.10.11.2冻结施工应急预案 ------------------------------------------------------------ 108 - 5.11 管片堆放及运输 ----------------------------------------------- - 109 -
5.11.1管片堆放----------------------------------------------------------------------------- 109 -
5.11.2管片运输----------------------------------------------------------------------------- 109 - 5.12施工测量 ----------------------------------------------------- - 109 - 5.12.1测量作业制度 ------------------------------------------------------------------------- 109 - 5.12.2地面平面控制测量 ------------------------------------------------------------------- 109 - 5.12.3地面高程控制测量 ------------------------------------------------------------------- 109 - 5.12.4联系测量 -------------------------------------------------------------------------------- 109 - 5.12.5高程传递 -------------------------------------------------------------------------------- 109 - 5.12.6地下导线测量 ------------------------------------------------------------------------ - 110 - 5.12.7地下高程控制测量 ------------------------------------------------------------------ - 110 - 5.12.8盾构姿态测量 ------------------------------------------------------------------------ - 110 - 5.12.9管片测量 ------------------------------------------------------------------------------- - 110 - 5.12.10贯通测量 ----------------------------------------------------------------------------- - 110 - 5.12.11测量资料的管理 -------------------------------------------------------------------- - 110 - 5.12.12盾构自动测量系统 ----------------------------------------------------------------- - 111 - 5.12.12.1概述 ----------------------------------------------------------------------------- - 111 - 5.12.12.2掘进数据的文件记录 -------------------------------------------------------- - 111 - 5.12.12.3数据传输 ----------------------------------------------------------------------- - 111 - 5.13施工监测 ----------------------------------------------------- - 111 - 5.13.1检测项目与控制标准 --------------------------------------------------------------- - 111 -
5.13.1.1地表沉降监测 ------------------------------------------------------------------ - 112 - 5.13.1.2地下管线监测 ------------------------------------------------------------------ - 112 - 5.13.1.13地面建筑物沉降、倾斜、裂缝监测 -------------------------------------- - 112 - 5.13.1.14进出洞50m内、联络通道处的深层土体沉降监测 ------------------- - 112 -