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The Study on the Technology of the Long-wall Top-coal Caving of Outburst Coal Bed and Gas Prevention in Fault Conformation Belt

Author: LiangXiMing
Tutor: LiShuGang；HuangQingXiang
School: Xi'an University of Science and Technology
Course: Mining Engineering
Keywords: out-bursting of coal and gas mine weak seam fault conformation belt the long-wall top-coal caving
CLC: TD823.8
Type: Master's thesis
Year: 2006
Downloads: 431
Quote: 0
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Abstract


Great areas of useless reserves are detected in Outburst coal in fault conformation belt of WeiJiadi caol. This coal is an out-bursting of coal and gas mine. The influence of dynamic pressure is severely and the rock-enclaves undulates severely. Outburst folding fractures the coal bed joint which brings great difficulty to the exploitation of coal. This paper does research on the technology of comprehensive mining exploitation in especial conditions.This paper makes a great breakthrough in the custom mining theory. It is considered that the mining is impossible in the belt in which the coal and rock are stagger in the traditional theory. The results of this research are summarized. The geology of conformation influence belt is studied and the Ruilibo and kengtopuyi reconnoiter and used to prove up the abnormity area of working face. The situation of coal coping and soleplate are proved up. The parameter and the content of coal gangue are researched. The gas drainage area is disposed at two roadways. The mine pressure observation is done during the period of working face cutting coal and the period of laneway system forming. The software FLAC3D is used to modulate. The deformation rule of surrounding rock of cutting mining laneway and the support pressure distributing of working face surrounding rock are modulated by the software of FLAC3D. Based on the principle of self-fixing latent arch, the laneway support method and parameter of thick coal bed are studied in outburst conformation influence belt. The exploitation method of outburst conformation influence belt and the cutting arts and crafts and the demanding of capability for equipments are studied in this paper.The advanced technology and modern produce method and scientific methods are

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CLC: > Industrial Technology > Mining Engineering > Mining > Coal mining > Underground mining methods > Mining method in the special conditions
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