Title: Analog Simulation Study on Deformation and Failure Laws of Overlying Strata of Full-mechanized Top-coal Caving Face with Large Mining Height in Extra Thick Coal Seam
Abstract: In order to know well the movement pattern of overlying strata and the distribution of abutment pressure in the full-mechanized top-coal caving face with large mining height of the 4# coal seam of which thickness is form 14 m to 20 m,in Liuhuanggou coal mine of Xinjiang Hami Coal Industry(Group) Co.Ltd,physical simulation experiment and studies were carried out.The results showed that a stable arch structure can form in overlying strata of full-mechanized top-coal caving face with large mining height of extra thick coal seam,under the stable arch structure the fractured rock beam becomes a multi-span beam structure.The deformation and unstability of the structure in overlying strata of full-mechanized top-coal caving face with large mining height dominate the abutment pressure distribution and strata pressure behavior of coal mining face.
Publication Year: 2011
Publication Date: 2011-01-01
Language: en
Type: article
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