Rapid Tunneling Process Optimization in Large Section Inclined shaft

The tunneling section of auxiliary inclined shaft in a coal mine reached 22.9 m²,in order to improve the tunneling speed,two sets of roadheader were used to excavate at the same time,and the process of carring out the temporary bolt after digging out two rows of bolt spacing was used.It reasonably arranged and used the working hours,the efficacy of workers and roadheaders reached the best and effectively improved the tunneling speed of inclined shaft.