STUDY ON OVERLYING STRATA MOTION RULE OF SHORTWALL MINING FACE OF SHALLOW SEAM WITH SIMULATION EXPERIMENT
Ding Lujun1, Liu Yuhong2
1Sichuan University, Chengdu, 610065 China
2SiChuan College of Architectural Technology, De Yang, 618000 China
Keywords: Неглубокое залегание, дневная поверхность, пласт, порода, кровля, физическое 3D-моделирование, смещения, напряжения, Shallow seam, 3D similar physical simulation, overburden strata movement, surface displacement
Abstract
Taking Shendong mining area as an research object, the roof strata moving law in the shallow buried deep thin bedrock was studied with 3D simulation experiment. The results showed that the surface displacement and roof pressure decrease little, and the roof does not appear the phenomenon of full thickness cutting. As the advancing distance of the working face increases, the displacement of the surface and roof increases. The old roof breaking is not easy to form a hinge structure, the roof when the pressure of mine pressure appearance is very intense.
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