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The proportion of deep dip angle coal seem is increasing gradually with the mining level extending in Chang Gouyu coal mine. The complex geological conditions and structures cause the coal seam irregular. The small fold and small fault district appear alternately, which brings the questions of the working management, the safe production, and the resources effective recycle.According to geological structure situation, surrounding rock characteristic and coal seam characteristic of Chang Gouyu coal mine, through the methods of theory analysis, experiment research, numerical simulation, and the on-the-spot mine pressure monitoring have been used to Rock Pressure of cantilever support working face the deep dip coal seam with compound roof, the activity rule of country rock and emergence rule of the mine pressure have been determined by cantilever support mining method, which provides the important basis for the coal exploiting under the similar condition.
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