论文部分内容阅读
以大同某煤矿8107大采高综放工作面为研究背景,通过建立理论力学模型研究了回采过程中顶煤覆岩高位的“砌体梁”结构与低位的“悬臂梁”结构耦合形成的“砌体梁-悬臂梁”结构,以及合理的支架工作阻力。现场实测8107工作面正常回采以及来压时支架工作阻力分别为26 MPa和40 MPa,与理论计算结果较为吻合。说明8107工作面采用的ZF15000/27.5/42型四柱低位放顶煤支架能够满足生产需求。
Taking the 8107 high working face with fully mechanized top coal caving in Datong Coal Mine as a research background, the “Masonry Beam” structure and the “Cantilever Beam” structure at the top of overburden in the top coal mining area during the recovery process are studied through the establishment of theoretical mechanics model Coupled to form a “Masonry Beam - Cantilever ” structure, and reasonable support work resistance. The actual measured 8107 working face normal mining and pressure to support the work of the resistance of 26 MPa and 40 MPa, respectively, and the theoretical calculation results are in good agreement. Indicating the ZF15000 / 27.5 / 42 four-post low-level caving support used in the 8107 face can meet production needs.