摘要
圆梁山隧道全长11068m,是渝怀线上最长的铁路隧道,主要穿越毛坝向斜、冷水河浅埋段及桐麻岭背斜,地层以泥岩、灰岩和白云岩为主。设计毛坝向斜隧道最大涌水量为8.3×104m3／d,最大水压为4.6MPa,隧道穿越的2#溶洞为高压、富水、深埋、粉细砂充填性溶洞,施工过程中,突水、涌砂十分严重,造成开挖面多次被淹,施工十分困难。主要介绍了2#溶洞突水、涌砂、涌泥情况,研究了相应的注浆方案、材料、工艺和注浆机械设备配套方式。
The total length of Yuanliangshan tunnel is 11 068 m, which is the longest tunnel in Yuhuai railway line. It is excavated through Maoba syncline, Lengshui river shallow imbedding section and Tongmaling anticline. The stratum is mainly composed of mudstone, limestone and dolomite. According to the design, the maximum water yield reaches 8.3 × 104 m3/d, the highest water pressure is over 4.6 MPa. The karst cave is filled with high pressure water, fine silty sand and soft mud, so in the course of construction, water gushing and sand outburst are very serious at the excavation face, and the construction is very difficult. The paper principally introduces the conditions of water gushing, sand and mud outburst, and studies the grouting design, materials and machine and equipment.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2004年第z2期5158-5164,共7页
Chinese Journal of Rock Mechanics and Engineering
关键词
隧道工程
高水压
粉细砂
溶洞
注浆
tunneling engineering, high water pressure, fine silty sand, karst cave, grouting
