护坑隧道断层破碎带施工技术

Construction technology for fault fracture zone of pit-protecting tunnel

对二广高速公路怀集—三水段护坑隧道断层破碎带段采用超前地质预报、小导管支护、锚喷初期支护、围岩量测施工技术作了详细叙述,并对开挖方法作了简要介绍,以指导类似工程施工。

It illustrates the detailed situation about the application of premature geographical forecast,small pipeline support,the earth periodic support of anchor jet,the constructional technology of surrounding rock measuring of pit-protecting tunnel in fracture zone of Huaiji-Sanshui section of Erlianhaote-Guangzhou highway,and introduced briefly the excavation method,so as to direct the constructions of similar projects.