Frequent and violent underground pressure behavior and dynamic disaster made roadways deform and damage instantaneously in full-mechanized caving mining face with horizontal sections in steeply inclined and extremely thick coal seam.

Support design of roof gateway with slicing method in steep inclined thick seam;

The mining method with longwall,strike and back, and management methods after mining in steep medium-thick seam are introduced,including using hydraulic prop,using three kinds of protecting mthods,and keeping rock wall beforehand,which is applied in retaining roadvays along goaf after mining.

Based on the application of artificial neural networks method, it sets up the artificial neural networks model for the evaluation on the degree of difficulty of top coal caving of roadway caving method in steep medium-thickness and high seam The model is made use of forecasting the technical-economic indexes of coal face and optimizing the technological parameters of roadway caving metho

The paper study thin and thick seam with steep dip mining technique of 7417 fully mechanized top-coal caving face,in Zhangshuanglou coal mine,introduce to coal mining method and equipment anti-skid successful experience,provide reliable use for reference mining of resemble face.