地隧施工方案设计论文

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1、地隧施工方案设计毕业论文目录第一章工程概况1.1工程概述······················································21.2工程地质水文··················································2第二章施工准备计划2.1施工准备······················································42.2组织机构······················································7第三章总体施工方案3.1循环作业时

2、间及图表···········································13第四章施工方案、方法及工艺4.1施工方案·····················································184.2施工方法及工艺···············································24第五章施工技术措施5.1组织保证·····················································565.2保证工程质量的技术措施·························

3、··············56第六章施工安全保证措施6.1塌方预防处理及应急预案······································596.2洞口工程安全措施············································616.369洞内作业安全技术措施········································616.4防火措施····················································636.5防雷击措施·····························

4、·····················636.6爆炸物品管理措施············································64第七章环境保护及水土保持措施7.1施工环保措施················································667.2施工水土保持措施············································67第一章工程概况1.1工程概述69新九燕山隧道位于陕西省延安市南川河与劳川河上游分水岭处的劳山川右岸黄土梁峁区，隧道于三十里铺一沟左侧进洞，下穿既有线西延铁路洪市沟二号

5、隧道，再穿过九燕山分水岭从前黄土沟出洞，地面高程为1158m～1335m。隧道进口基岩裸露，山坡表层冲沟发育，地表植被较发育。隧道最大埋深210m，一般埋深34～80m国家Ⅰ级铁路，新建双线160Km/h（预留200Km/h条件）隧道，中—活载客货共线电气化铁路。隧道起迄里程为DK514+049～DK523+402，全长9353m，为双线长大隧道。隧道内轮廓按旅客列车行车速度200Km/h设计，轨面以上净空横断面积不小于80m2。该隧道地质条件复杂，施工难度大，是本标段和全线的控制性重点工程。1.2工程地质水文下穿既有西延铁路隧道段控制开挖和加强支护施工以及隧道出口端2100m长

6、的Ⅳ级红粘土围岩施工。隧道除进口312.77m位于半径为2804.53m的曲线上，出口1725.09m位于半径为4004.53m的曲线上外，其余地段均位于直线上。洞身纵坡依次为长5901m3‰及长2150m7.5‰的连续上坡，出口为长1302m3‰的下坡。隧道经过区出露主要地层为第四系全新统坡积砂质黄土、上更新统风积砂质黄土、中更新统风积黏质黄土、上第三系红粘土及侏罗系页岩夹砂岩，有9处滑坡，均位于隧道洞顶以上，对工程有一定的影响。特殊岩土为湿陷性黄土及膨胀土。隧道围岩由Ⅴ、Ⅳ、Ⅲ级三种围岩级别组成，在隧道进出口黄土覆盖层埋深较浅处各有一段红粘土Ⅴ级围岩，其余洞段为Ⅳ级和Ⅴ级围岩

7、，Ⅳ级围岩除有2100m长的红粘土外，其余均为页岩夹砂岩层，Ⅲ69级围岩为微风化砂岩或页岩。隧道经过地区地震动峰值加速度值采用0.05g(相当于地震基本烈度六度)，地震动反映谱特征周期为0.35S。隧道经过地区地表水均为小支沟季节性流水，均受大气降水补给，水量随季节而变化；地下水类型主要为第四系孔隙潜水和基岩裂隙水。地下水主要赋存于土石分界地带或黄土层底部与古土壤层交接带，以层状裂隙潜水为主。隧道正常总涌水量121m3/d，最大总涌水量242m3/d。根据调查，新九燕山隧道地区气