巷道组过断层围岩控制技术研究

以深井巷道组过特大型断层（落差大于100m）破碎带为工程背景,采用数值模拟的办法对比分析了正常地层和断层破碎带中巷道组围岩的力学特征以及相互影响;结合断层破碎带围岩的实际情况,建立了＂早预测、短进尺、弱爆破、强支护、紧封闭、勤量测、防突水＂的断层带施工技术和综合保障体系,形成超前物探、超前加固、微震开挖、分步动态支护等综合配套技术,保证了巷道的施工安全。

Study on Surrounding Rock Control Technique in Roadway Group Crossing Faults

For roadway groups at great depth crossing large fault fragmentation whose fall is more than 100 meters,by numerical simulation mechanical characteristics and mutual influence of surrounding rock mass of roadway groups in fault fragmentation were studied and analyzed.Combined with practical situation of surrounding rock in fault fragmentation,the construction technology in fault fragmentation and comprehensive guarantee system were established,which include earlier forecast,small advancement,weak blasting,strong support,tightly closing,frequent measurement and prevention of water inrush.A comprehensive technology which includes advanced geophysical prospecting,advanced reinforcement,slight shock excavation,step-by-step dynamic support and so on was formed,which ensures safety in roadway construction.