厚松散层大采高综采面矿压规律及支架工作阻力分析word格式论文.docxVIP

优秀毕业论文 精品参考文献资料 Subject ：Research on the law of mine pressure and Support resistance in large height Fully mechanized coal mining face covered with thick loose bed Specialty ：Mining Engineering Name ：Cao jinfeng （Signature） Instructor ：Li longqing （Signature） External Instructor：Wang jianshe （Signature） Abstract Shengli Coal Mine is located in the south of Yushen mining area, the mine is under construction, its 3# coal seam belongs to shallow buried, thick bedrock,overlying thick sand layer. In the mine’s construction,workers discovered that the rock stratum has three layers of hard rock with larger thickness on top of 3# coal seam,and its thickness reaches 80~95 meters,the bottom layer of hard rock has maximum strength, its uniaxial compressive strength is about 90MPa.The hard rock is covered with thick sand stratum which is 49~60 m. It has no mature mining experience in the surrounding of Shengli Coal Mine,and in recent years,the large height fully mechanized mining which is high yield and high efficiency has become the preferred method for mining, so the support resistance increases ceaselessly, supporting investment soared with the mining height increases, the selection and design of support is lack of scientific, these questions become one of the main problems to be solved to realize safety and high efficiency production in the future. This article researches on pressure behavior law of systematic of large mining height fully mechanized coal mining face about 3# coal seam comprehensive,thus understands the overlying strata in longwall faces and the motion law of abutment pressure distribution rule and support parameters in the specific conditions.So that the results can make the selection of support design more scientific and reasonable,support investment more economical, supporting selection more reasonable,at the same time,the results have practical guidance and reference significance. The paper relies on the resear