0裴家垣隧道右线出口v2-b级围岩洞身开挖施工组织设计城轨14-1费跃铖1448043105杨康14480431361目录一、施工步骤.............................................................................................................2二、施工工艺.............................................................................................................21、洞身开挖......................................................................................................................................................22、初期支护......................................................................................................................................................4(1)初期支护施工程序..............................................................................................................................4（2）施工方法..........................................................................................................................................4（3）湿喷法喷射砼..................................................................................................................................4（4）型钢拱架施工..................................................................................................................................6（5）钢筋网施工......................................................................................................................................8（6）中空锚杆、砂浆锚杆及锁脚钢管..................................................................................................8（7）超前小导管支护工艺....................................................................................................................8（8）监控量测........................................................................................................................................10三、施工供风、供水、供电及排水方案...............................................................101、施工供风及通风........................................................................................................................................112、施工供水....................................................................................................................................................113、施工供电....................................................................................................................................................11四、质量要求...........................................................................................................11五、安全措施...........................................................................................................13六、文明施工...........................................................................................................14七、环保措施...........................................................................................................142裴家垣隧道右线出口v2-b级围岩洞身开挖施工组织设计马路河隧道进口K2+960~K2+920由于围岩为松散覆盖层、强风化及中风砂岩，局部夹泥岩，岩质极软，节理裂隙极发育，初勘物探显示岩体破碎，点滴状出水，拱顶及侧壁易坍塌，围岩级别为Ⅵ级，稳定性极差，此段除需地表加固注浆外，开挖方法拟采用双侧壁导坑开挖法。一、施工步骤施工准备→洞口掌子面预加固→开挖平台就位→断面测量、放样→施做超前支护→按分步顺序开挖，进尺控制在1.0～1.2m→喷8cm封闭掌子面，并初喷4cm砼封闭...
