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东牧护高速公路隧道综合设计
摘 要
概况：东牧护高速公路隧道位于陕西省商洛市商州区，平均海拔1200m以上，地形起伏较大。此区段山脉走向大致为南北向，总体地势特征为东高西低。隧道总长5840米，其中1号隧道3920米，2号隧道3920米。地质条件较差，并且2号隧道经过断层。围岩多为强、弱风化的白云岩、石灰岩和花岗岩，围岩级别分为Ⅲ、Ⅳ、Ⅴ级。
建筑限界：隧道高度5米，行车道宽度3.75米，双车道布置，净宽10.50米，其中左侧向宽度为0.5m，右侧向宽度为1.00m，左侧检修道宽度为0.75m，右侧检修道宽度为0.75m，路面横坡采用2%的坡。
紧急停车带建筑限界：紧急停车带的总宽度14m，包含右侧向宽度应取3.5m，其余均和正常隧道建筑限界相同，停车带的路面横坡取2%的单坡。
车行横通道：车行横通道建筑限界高度5米，路面宽度为4米，不设侧向余宽，左右侧检修道宽度均为0.5米。
人行横通道：人行横通道建筑限界高度2.5米，路面宽2.2米，不设侧向余宽和检修道。
内轮廓：设计车速为v=100km/h情况下的横断面规定，断面为三心圆，r1=560cm，r2=800cm，r3=100cm，r4=1500cm，H1=160.6cm，H2=200cm ,断面周长为32.69m，面积为80.22m2。
.隧道施工：施工时以新奥法理论为基础，采用控制爆破，加强初期支护和监控量测，及时修正支护参数的施工方法。隧道衬砌结构采用复合式衬砌，二次衬砌计算时采用荷载-结构法。
隧道防排水：隧道防排水设计遵循“防、排、堵、截结合，因地制宜，综合治理”的原则，以达到“堵水有效、防水可靠、排水畅通、经济合理”的目的；坚持以结构自防水为主，外辅加防水层为辅的原则；隧道纵向采用分区防水，防止局部防水板破坏造成地下水在隧道内的贯通，便于查渗漏点，方便维修。
隧道通风：隧道通风方式采用射流风机纵向通风，射流风机在隧道进出口附近集中布置。隧道采用高压钠灯照明，并按各区段的亮度要求选择合适的布灯间距。1、2号隧道灯具布置采用双排布置，高压钠灯光电照明。通风方式选择风机纵向机械通风，需要布置18组共36台1120型风机。
隧道照明：基本照明时：需要布置150W的高压钠灯218距9m，全长布置）。加强照明时：入口段需布置400W的高压钠灯126组（间距1m，布置126m）(共136m，前10m不布置)。过渡段照明时：过渡段Ⅰ需布置250W的高压钠灯47组（间距2.3m，
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东牧护高速公路隧道综合设计
布置106m）；过渡段Ⅱ需布置150W的高压钠灯21组（间距5.5m，布置111m）；过渡段Ⅲ需布置100W的高压钠灯5组（间距38.5m，布置167m），出口段照明需布置250W的高压钠灯19组（间距3.2m，布置60m）。
洞门：（1）东牧护1号隧道左线进、出口和右线的进口处，洞口设置端墙式
洞门。（2）东牧护1号隧道右线出口处，此处设置台阶式洞门。（3）东牧护2号隧道为长大隧道，左线进口和右线出口处设置柱式洞门。（4）东牧护2号隧道的左线出口和右线进口处，设置削竹式洞门。
隧道施工组织设计：东牧护施工过程中合理的场地布设会从很大程度上方便隧道施工，缩短工期，保护施工设备和施工场地周围的环境，东牧护2号隧道施工时由东西两侧同时开挖。
关键词：隧道工程，新奥法，监控量测，复合式衬砌， 结构计算，通风照明
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东牧护高速公路隧道综合设计
ABSTRACT
Overview:The Mo Chako highway tunnel is located in Shangzhou, Shangluo in Shanxi Province,The average altitude of 1200m above undulating terrain. This section of the mountains to the roughly north-south, the overall topography is characterized East West.The total length of the tunnel is 5840 meters, of which the first tunnel is 3920 meters in length and the second tunnel 3920 meters. The geologic condition of the tunnel is bad and there is one fault exists there. Most surrounding rocks of the tunnel are dolostone, limestone and granite, and the surrounding rock classification is level Ⅲ，Ⅳ and Ⅴ. Construction Clearance:The principle theory of construction is New Austrian Tunnelling Method, taking the method of controlled blasting and strengthening the primary support and monitoring and measuring, revising the parameter of support for construction. The lining of the tunnel is composite lining .The method of calculation of secondary lining is load-structure method.
Emergency strip construction clearance: the total width of the emergency strip of 14m, width should be included on the right to take 3.5m, and the rest are the same as normal tunnel construction clearance, parking pavement cross slope of 2% is taken with single slope.
Dealers cross channel: Dealer cross channel construction clearance height of 5 meters, the road width of 4 meters, no more than the lateral width of the left and right side access road width of 0.5 meters.
Pedestrian cross channel: pedestrian cross channel construction clearance height of 2.5 m, 2.2 m wide road, with no more than a lateral width and overhaul road.
Inner contour: a cross-sectional design speed of v = 100km / h in case of provisions, sections of three concentric circles, r1 = 560cm, r2 = 800cm, r3 = 100cm, r4 = 1500cm, H1 = 160.6cm, H2 = 200cm, section circumference of 32.69m, an area of 80.22m 2. Tunnel waterproofing and drainage:Tunneling waterproof and drainage follows the principle of “preventing, displacing, disconnecting, plugging, adjusting measures to local conditions, taking comprehensive management” to reach the purposes of “water plugging effective, waterproof and drainage unblocked reliability, reasonable economy”.；Adhere to the structure from water-based, waterproof outer layer plus auxiliary principle supplemented; tunnel longitudinal partitions using waterproof, waterproof board to prevent damage caused by localized groundwater through in the tunnel, to facilitate the investigation leaks, easy maintenance.
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东牧护高速公路隧道综合设计
Tunnel Ventilation：The way of tunnel ventilation is longitudinal ventilation by jet fans and the jet fans are arranged centralised near the entrances and the exits of the tunnel. High voltage sodium lamps are ued for the illumination of the tunnel, and arranged in a appropriate spacing based on the request of brightness of each section. 1,2 tunnel lighting layout with double layout, high pressure sodium photoelectric lighting. Select the vertical ventilation fan mechanical ventilation, need 36 units arranged in 18 groups of 1120 fans. Tunnel lighting:When basic lighting: Need arrangement 150W HPS 218 from 9m, full-length layout). When enhanced lighting: entrance layout required 126 400W HPS group (spacing 1m, arranged 126m) (total of 136m, 10m is not arranged before). When the transition section Lighting: transition section Ⅰ need 250W HPS arranged 47 group (spacing 2.3m, arranged 106m); transition section Ⅱ need 150W HPS arranged 21 group (spacing 5.5m, arranged 111m); transition section Ⅲ need layout 100W HPS group 5 (pitch 38.5m, arranged 167m), exit section arranged lighting needs 250W HPS 19 group (spacing 3.2m, furnished 60m).
Portal: (1) East Pastoral Care on the 1st tunnel into the left lane, export and import of the right line, the end wall openings to Portal. (2) protect the 1st Dongmu right lane tunnel exit, set here stepped Portal. (3) protect the 2nd East husbandry tunnel long tunnel, the left line import and export right line set at column portal. (4) Dongmu guard left lane exit and entrance of the 2nd right lane tunnel, setting cut bamboo-style portal.
Dongmuhu reasonable construction process from site layout will largely facilitate the tunnel construction, shorten the construction period, construction equipment and construction sites to protect the surrounding environment, east and west sides of the excavation by the same animal husbandry while retaining the 2nd tunnel.
Keywords: NATM, Monitoring and Measurement,composite lining, structural
calculations,ventilation lighting
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东牧护高速公路隧道综合设计
目 录
第一章 设计总说明 ..................................................................................... 13
1.1 隧道设计概况 ....................................................................................................... 13 1.2 隧道设计标准规范 ............................................................................................... 13 1.3 隧道主要技术标准 ............................................................................................... 13 1.4 隧道建设地区工程概况 ....................................................................................... 14
1.4.1 区域地形、地貌 ......................................................................................... 14 2.4.2 水文与气象 ................................................................................................. 14 1.4.3 地质条件 ..................................................................................................... 14 1.4.4 水文地质条件 ............................................................................................. 16 1.4.5 不良地质现象 ............................................................................................. 16 1.5 横断面设计 ........................................................................................................... 17
1.5.1 建筑限界 ..................................................................................................... 17 1.5.2 隧道内轮廓 ................................................................................................. 17 1.6 隧道衬砌结构设计 ............................................................................................... 18
1.6.1 围岩分级 ..................................................................................................... 18 1.6.2 本隧道衬砌设计 ......................................................................................... 18 1.7 防、排水设计 ....................................................................................................... 19
1.7.1 隧道防排水设置的目的 ............................................................................. 19 1.7.2 隧道防、排水设计原则 ............................................................................. 19 1.7.3 地下水对隧道的危害 ................................................................................. 19 1.7.4 结构防、排水技术措施 ............................................................................. 20 1.7.5 实施工艺及要求 ......................................................................................... 21 1.8 通风设计 ............................................................................................................... 22
1.8.1 隧道通风应符合的要求 ............................................................................. 22 2.8.2 本隧道通风概况 ......................................................................................... 22 1.9 照明设计 ............................................................................................................... 23
1.9.1 照明设计原则 ............................................................................................. 23 1.9.2 本隧道照明情况 ......................................................................................... 23 1.10 洞口及洞门 ......................................................................................................... 24
1.10.1 洞口位置选择 ........................................................................................... 24 1.10.2 洞门选择 ................................................................................................... 24 1.11 隧道施工 .............................................................................................................. 25
1.11.1 隧道施工方案设计 .................................................................................... 25 1.11.2 隧道施工原则 ............................................................................................ 25 1.11.3 隧道施工布置 ............................................................................................ 25 1.11.4. 隧道总体方案 ........................................................................................... 26 1.11.5 施工中的难点及解决方案。 .................................................................... 26 1.12 隧道内路基和路面 ............................................................................................. 27
1.12.1 路基 ........................................................................................................... 27
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