Studied The Behavior Of Ground Pressure And The Failure Laws Of Surrounding Rocks Of The High Inclined Angle Seam Mining

The paper is based on high inclined fully mechanized coal mining working face as subjects of the PanBei Coal Mine of HuaiNan mining. The use of science related mechanics theory has integrated application tools Flac3D numerical simulation and field measurement,studied the large inclined angle seam mining of behavior of ground pressure and surrounding rock control technology. With the elastic plate theory, established a high inclined seam longwall roof damage mechanics model, deduced roof deformation and stress distribution equation of the high inclined seam to the next longwall mining conditions broken roof mode; By numerical simulation, analysis, comparison of the rock stress distribution under different propulsion from different angle conditions, and changes in the distribution of plastic zones on the proposed special focus on measures to improve the fully mechanized coal mining in steeply dipping seam security factor is important. By field data analysis reveals that the general features and inclined fully mechanized mining face pressure behavior, obtain a Face with the more obvious pressure cycle phenomenon, appears to pressure hydraulic support working resistance increases during different Face to pressure the region appeared to step away from the pressure and intensity differences conclusions.The research results of this paper can be a powerful theoretical support for making measures to control the 12128 working face mine pressure and provide the theory reference to the working face whose engineering condition is similar with Panbei mine, meanwhile it has played a certain role in perfecting and enriching theories of researching mining pressure of the large angle super-length fully-mechanized working face in China.