摘要
针对浅埋软弱围岩隧道初期支护大变形问题,结合昌宁高速川风凹隧道工程实际,分析了隧道大变形发生的原因机理,提出了包含地质情况探测、地表塌陷注浆回填、继续变形控制、洞内管棚注浆加固、三台阶临时仰拱法开挖和强支护的系统施工治理技术。
According to large deformation of tunnel primary support in shallow depth and weak surrounding rock,cause and mechanism of large deformation are analyzed combining practical projects on Chuanfengao tunnel in Changning highway.In addition,systematic construction treatment technical methods are put forward,which include geological exploration,surface subsidence grouting and backfilling,continuous deformation controlling,pipe shed grouting in the tunnel,excavation method of three benches temporary invert method and strong support.
出处
《黑龙江交通科技》
2017年第12期163-164,167,共3页
Communications Science and Technology Heilongjiang
关键词
软弱围岩
初期支护大变形
技术
shallow depth
weak surrounding rock
large deformation of primary support
treatment technology
