Abstract：Taking safe construction of the main haulage roadway drilling crossing a 435-m fall and 140-m wide fault zone as engineering background，a study of engineering geological guarantee and construction controlling technique of roadway are performed. Based on the fault rocks，scraping characteristics of rock core shear-sliding surface，water conductivity，recent activities of the faults and regional geological analysis，it is found that roadway construction will not be subjected to fracture water outburst. The key construction technique lies in successful control of head-on hollow roof rock collapse. Under this point，grouting of chemical serum should be chosen as a precaution. Once the roadway is formed，it is important to control large-scale water seepage caused by argillitization of broken loose mudstone and keep long-term stability of roadway. So combination of lag-grouting of controlling rock mass weakened by fracture water and high-intensity pretension supporting to prevent continuous rheological deformation is advocated. As a result，two supporting schemes were considered：as long as self-stability of the roof rock is allowed，the stepwise bolting with anchorage cables installed at key area will be adopted；otherwise，the pre-grouting，spraying，shedding and bolting scheme will be selected instead. Process controlled project is highlighted by dynamic use of advancing pre-grouting，spraying，shedding and bolting to guarantee the roadway¢s safe construction.
