南广铁路白云隧道断层突泥灾害治理技术

Treatment Technology for Mud Bursting of Baiyun Tunnel of Nanning-Guangzhou Railway in Fault

研究目的:南广铁路白云隧道施工中遇到断层发生小型突泥,清淤时发生大规模突泥突水,造成人员伤亡,形成灾害。研究结论:(1)超前地质预报是防范突泥突水的有效手段,施工中必须严格实施,当施工中发生突泥时,必须进行清淤安全评估,贸然清淤将十分危险。(2)采用注浆法成功地处理了突泥突水溃口并完成断层破碎带的安全施工。(3)通过采取堆渣挡护、迂回施工、正洞处理等技术措施,完成该隧道断层破碎带的处理,可供类似工程参考。

Research purposes： In the construction of the Baiyun Tunnel of the Nanning - Guangzhou Railway, the small mud bursting appeared in fauhand and the large - scale mud and water bursting happened to cause the casualties and disaster when clearing silt. Research conclusions：（ 1 ） The advanced geological forecast is an effective means of prevention of mud and water bursting, so it must be done in construction. When the mud burst happens, the evaluation must be done for the risk of cleaning silt, otherwise it is dangerous. （2） The grouting method was successfully used for treatment of the dyke of the mud and water bursting and for construction of the tunnel in the fauh fracture zone safely. The treatment of the fault fracture zone of the tunnel was conducted by taking the technique measures of piling broken stones for protection, circuitous construction and treatment of main tunnel, and it would be as the reference to the similar engineering.