中铁四局集团第四工程有限公司遵贵扩容工程第4-B合同段项目经理部
目 录
目 录 ······························································································································· 1 1、编制说明 ······················································································································· 1
1.1 编制依据 ················································································································ 1 1.2 编制原则 ················································································································ 1 1.3 规范、标准 ············································································································· 1 2、工程概况 ······················································································································· 2
2.1 工程简介 ················································································································ 2 2.2设计概况 ················································································································· 2 2.3自然条件 ················································································································· 3
2.3.1地形地貌 ········································································································ 3 2.3.2工程地质条件·································································································· 3 2.3.3水文条件 ········································································································ 4 2.3.4不良地质 ········································································································ 5 2.3.5进出口段围岩评价 ··························································································· 6 2.3.6进出口边仰坡稳定性评价 ·················································································· 8 2.4主要技术标准 ··········································································································· 9 2.5主要工程量 ············································································································· 10 2.6计划工期 ························································································ 错误！未定义书签。 2.7施工条件 ················································································································ 10
2.7.1 施工便道 ······································································································ 10 2.7.2 施工用电 ······································································································ 11 2.7.3 施工用水 ······································································································ 11 2.8建设相关单位 ·········································································································· 11 3、工程重难点分析及施工对策。 ··························································································· 11 4、施工进度计划 ················································································································ 11
4.1总体计划安排 ·········································································································· 11 4.2主要工序作业时间分析 ····························································································· 11 4.3主要工序施工进度计划 ····························································································· 11 5、施工工艺技术 ················································································································ 13
5.1 总体施工方案 ········································································································· 13 5.2施工准备 ················································································································ 13
5.2.1隧道进口场地布置 ·························································································· 13
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中铁四局集团第四工程有限公司遵贵扩容工程第4-B合同段项目经理部
5.2.2隧道进口场地布置 ·························································································· 13 5.2.3技术准备 ······································································································· 14 5.2.4物资准备 ······································································································· 14 5.2.5施工测量 ······································································································· 14 5.2.6工程试验准备································································································· 14 5.2.7二衬台车拼装场地填筑 ···················································································· 14 5.3 主要施工方法及工艺 ································································································ 15
5.3.1 洞口测量放样 ································································································ 15 5.3.2 洞顶截水沟 ··································································································· 15 5.3.3 边仰坡开挖、支护 ·························································································· 16 5.3.4套拱施工 ······································································································· 18 5.3.5 大管棚施工 ··································································································· 19 5.3.6 暗洞施工 ······································································································ 23
6、劳动力、机械配置计划 ···································································································· 41 7、施工安全保证措施 ·········································································································· 42 8、其它技术保证措施 ·········································································································· 44 9、附图、附表 ··················································································································· 46
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中铁四局集团第四工程有限公司遵贵扩容工程第4-B合同段项目经理部
1、编制说明 1.1 编制依据
(1) 与业主签订的工程承包合同、协议、会议纪要。
(2) 遵贵扩容工程第4-B合同段上甘坪隧道施工设计图纸及相关设计文件。 (3）投标书承诺的工期节点、合同要求的工期、质量及环境保护要求。 （4）国家、行业、地方有关职业健康安全的要求。 (5）对本项目现场和施工条件调查掌握的有关资料。 (6）国家现行施工和设计规范、验收标准及业主的有关规定。
（7）工程项目部的组成、机械设备、各类技术人员配备及施工队伍作业能力的基本情况。 1.2 编制原则
(1) 贯彻国家的相关方针、政策及及有关工程施工规范、规定，当地政府的相关制度。
(2) 整个工程统筹组织，合理安排各专业施工顺序和工序的衔接，突出重点项目和关键工序，统筹兼顾，均衡生产，确保工期兑现。
(3) 从组织机构、施工方案、机械设备配备、工程材料供应等方面确保工程质量、施工进度和施工安全。
(4) 质量创优、安全无事故，执行GB/T19001标准，确保质量第一，保证施工人员人身健康安全。
(5) 临时工程本着节约用地、满足施工、精打细算的原则安排。 (6) 充分考虑并做好环境保护工作。 1.3 规范、标准
（1）公路工程技术标准 （JTG BO1-2014） （2）公路隧道施工技术规范 （JTG F60-2009） （3）公路工程质量检验评定标准 （JTG F80/1-2004） （4）公路工程施工安全技术规范 （JTGF9—2015） （5）爆破安全规程 （GB6722-2014） （6）《锚杆喷射混凝土支护技术规范》 （GB50086-2001）
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中铁四局集团第四工程有限公司遵贵扩容工程第4-B合同段项目经理部
2、工程概况 2.1 工程简介
上甘坪隧道为一座上、下行分离的六车道高速公路中隧道，位于楠木渡镇黄木村至楠木渡镇临江村区间，隧道起讫桩号左线ZK40+995～ZK42+060,长1065m；右线YK40+980～YK42+085,长1105m，洞身最大埋深90m，最小埋深4m。 2.2设计概况
本隧道均采用端墙式洞门，洞口段设计均采用长管棚进行支护。隧道洞口围岩支护参数详见表2.1-1。
平面线形：隧道遵义端位于直线段上，平面线位线间距为24.4m，洞身处于右偏圆曲线及缓和曲线段上，贵阳端位于直线段上，平面线位线间距为26.1m，隧道最大平面线位间距位于洞身，为34m。
纵断面线形：本隧道左、右线遵义端洞口位于直线段上，贵阳端洞口纵断面分别位于R=30000m、R=25000m凹型竖曲线上；左、右线洞身直坡段纵坡分别为3.000% +2.333%，3.000% +1.935%。
路面横坡：本隧道洞口段左、右线均为2%单向横坡。洞身左线存在3%超高及其缓和段。
上甘坪隧道按照规范及安全要求，设置了1处车行横洞，2处人行横洞。
表2.1-1 隧道洞口围岩支护参数表 里程、段落 位长度围岩级别 30cmC20ZK41ZK41喷射砼，60cmC23 V1 S-Va 20*20双层钢筋网 30cmC20ZK41ZK42喷射砼，60cmC35 V2 S-Va 20*20双层钢筋网 右YK41YK4130cmC2035 V1 S-Va 喷射砼，20*20双60cmC30钢30钢筋砼 30钢筋砼 4m长φ25mm中空锚杆，间距0.5m*1.2m 4m长φ25mm中空锚杆，间距0.5m*1.2m 4m长φ25mm中空衬砌类型 喷射砼 仰拱 系统锚杆 钢支撑 辅助措施 初支 二衬 置 起始终点（m里程 里程 ） I22b@0.5m φ108mm超前长管棚，φ50mm超前小导管 φ108mm超前长管棚，φ50mm超前小导管 φ108mm超前长管棚，φ50mm超前二衬为60cmC30钢筋砼 二衬为60cmC30钢筋砼 二衬为60cmC30钢筋+015 +038 左线 I22b@0.5m +990 +025 I22b@0.5m 线 +000 +035 筋砼 锚杆，间距 2
中铁四局集团第四工程有限公司遵贵扩容工程第4-B合同段项目经理部 里程、段落 位长度围岩级别 层钢筋网 衬砌类型 喷射砼 仰拱 初支 系统锚杆 0.5m*1.2m 钢支撑 二衬 辅助措施 小导管 砼 置 起始终点（m里程 里程 ） 30cmC20YK42YK42喷射砼，60cmC35 V2 S-Va 20*20双层钢筋网 30钢筋砼 4m长φ25mm中空锚杆，间距0.5m*1.2m I22b@0.5m φ108mm超前长管棚，φ50mm超前小导管 二衬为60cmC30钢筋砼 +015 +050 2.3自然条件 2.3.1地形地貌
隧道区地形较简单，为单座山丘。山体总体呈北西走向。隧道穿越部位最高海拔934m，最低海拔817m，相对高差117m，属低山地貌。 2.3.2工程地质条件
(1).地层特征：测区基岩地层岩性主要为二迭系下统茅口组（P1m）灰岩和二迭系中统龙潭组（P2l）灰岩、泥质粉砂岩、泥岩、煤层夹灰岩及煤层等互层，分布于整个隧道测区。
测区中风化基岩局部出露，溶蚀、溶隙较发育，大部分地区被第四系地层所覆盖。地层主要为第四系（Q4）碎石土，二迭系下统茅口组（P1m）灰岩和二迭系中统龙潭组（P2l）灰岩、泥质粉砂岩、泥岩、煤层夹灰岩及煤层等互层。分述如下：
①、红粘土：棕红色，硬可塑，含泥质粉砂岩、灰岩碎块，含量约30%。 ②、碎石土：黄褐色，稍湿，粒径一般为2-6cm，最大粒径约10cm，碎石主要成分为灰岩、泥质粉砂岩，含量约60%，充填物为红粘土，结构松散，残积成因。
③、中风化灰岩（P2l）：深灰色，隐晶质结构，中厚层状构造，裂隙较发育-发育，方解石石充填，岩芯较破碎，主呈柱状，节长5-25cm，最长35cm，采芯率85%-90%，岩石质量指标RQD=25-50。
④、中风化泥质粉砂岩：灰色，砂质结构，薄～中厚层状构造，裂隙发育-很发育，岩芯极破碎-破碎，在钻具的机械作用下，岩芯主呈碎块状，采芯率70%-85%，岩石质量指标RQD=0。
⑤、中风化炭质灰岩：黑色，隐晶质结构，中厚层状构造，岩质较软，裂隙较发
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