The use of steel and injection rock bolts to support mine workings when crossing tectonic faults

Abstract Using the method of numerical modeling, stability mine working under difficult conditions crossing a tectonic fault was studied as well effectiveness using steel rock bolts in combination with injection bolts. It shown that and complemented each other very well, increasing reducing permeability host rocks. Injection exclude possibility destruction rocks more effectively reduce disturbed zone fault. At same time, better restrain expansion high difference stress tensor components. Therefore, case heavily watered or probability methane breakthroughs into working, it is to install close face possible. Then water- gas-proof shell arch around will be created immediate vicinity face. If there no such threat priority maintain long-term then first all necessary