It includes two key points as follows: one is to drive a roadway in the fault before the coalface arrives, the roadway is named pre-driven roadway; the other is to dispose the rock waste of driving in entry of coalface.

Research on Effect of Rockmass Joints and Fissures on Blasting in Tunneling and Its Practice;

Development of tunneling blasting expert system;

Application of the technique of pentagon hollow cutting-in in tunneling;

Hydraulic slotting technology to prevent coal and gas outburst during heading excavation;

This paper analyzes on and probes into the factors influencing the speed of rock drivage such as the cyclical footage, drift forming, blasting efficiency, hole depth, and organizational management, etc.

At present,in the building of new shaft,rock drivage takes 40%-50% of whole project,and the construction takes 35%-50%.

Research on surrounding rock deformation factors in gob-side entry driving of fully mechanized longwall top coal caving mining face in island seam;

The gob-side entry driving in the fully-mechanized coal winning face can be protected successfully by using the anchored cable and rod supporting system.

In fouth cola mine of Hebi coal power stock company,roadway of neighbouring goaf bear a large pressure,maintenance is very difficult ,it affects safety production,in order to solve this problem,this coal mine co-operates with jiaozuo university of engiveering,combined supporting technology of gob-side entry driving have been studied through test in 2118 2614 workface tood results are gained.