太行山隧道富水宽张裂隙注浆堵水技术研究  

Research on Grouting and Blocking Water Technology in Water Rich Broad Patulous Cranny of Taihangshan Tunnel

作　　者：张民庆 张亮 何志军 彭峰 张晓华[3] 

机构地区：[1]中国铁路总公司工程管理中心,北京100844 [2]北京中铁瑞威基础工程有限公司,北京100055 [3]中铁十八局集团有限公司,天津300222

出　　处：《铁道标准设计》2015年第6期108-113,共6页Railway Standard Design

摘　　要：太行山隧道施工中遇到富水宽张裂隙带,左线长度218 m、右线长度200 m,超前探孔单孔最大涌水量230m^3/h,静水压力0.8 MPa,围岩为Ⅲ级石英砂岩。施工中先后采取全断面帷幕注浆、带水作业、周边注浆等方法。工程实践表明:(1)3种方法均可以满足开挖要求,施工进度分别为25、20、39 m/月,周边注浆处理该类地层更有优势;(2)带水作业必须满足超前探孔单孔出水量小于40 m^3/h、总涌水量小于300 m^3/h、破碎裂隙段长度小于3 m的要求,否则,施工安全和进度无法保证;(3)周边注浆与全断面帷幕注浆相比,注浆孔数量减少59%,注浆时间缩短56%,进度提高56%;(4)全断面帷幕注浆采用2 L/min/m作为检查孔出水量标准是合适的,并可适度放宽,周边注浆可采用5 L/min/m的标准。The construction of Taihangshan tunnel is encountered in water rich and wide tension fissure zone with left line length 218 m and right line length 200 m. The maximum gushing water is predicted to be 230 m3/h and the static water pressure 0. 8 MPa. The surrounding rock is grade quartz sandstone. It is constructed with full face curtain grouting in presence of water and with peripheral grouting method. Engineering practices show that： （ 1 ） the three methods can meet the requirements for excavation with construction progress 25 m/month, 20 m/month and 39m/month respectively, the peripheral grouting treatment of the formation is very advantageous;（2） construction with presence of water must satisfy the requirements for advanced hole drilling single hole water less than 40 m3/h, the total water amount less than 300 m3/h and crack length less than 3 m, otherwise, the construction safety and schedule cannot be guaranteed; （ 3 ） compared with surrounding grouting and full face curtain grouting, grouting hole is reduced by 59%, grouting time cut by 56%, schedule increased by 56%; （ 4 ） the entire cross-section curtain grouting by using 2 L/min/m as the inspection hole water volume standard is appropriate, and may be extended and 5L/min/m standard may be applied for peripheral grouting.

关 键 词：铁路隧道 富水宽张裂隙带 注浆 带水作业 施工 

分 类 号：U45[建筑科学—桥梁与隧道工程]