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Coal and gas outburst the mine identification of individual indicators related degree

Author: ZhangZhou
Tutor: TangYouYi
School: Henan Polytechnic University
Course: Mineral prospecting and exploration
Keywords: Individual indicators The extent of the damage of the coal Consistent coefficient Methane Diffusion initial velocity Gas Pressure Associate degree
CLC: TD713
Type: Master's thesis
Year: 2009
Downloads: 95
Quote: 1
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Abstract


Gas outburst accident is one of the important factors against the mine production safety , but also one of the most serious disasters in the coal mines . Highlights on mine risk identification is a very important job , it is effective to prevent gas outburst accident , to protect the safety of mine production is of great significance . This article basis of coal and gas outburst identification norms \Proceed from coal and gas outburst principle , analysis of coal and gas outburst phenomenon to explore the mechanism of coal and gas outburst . This paper studies the content the ruggedness coefficient , of the extent of the damage of coal , coal gas irradiation early speed and coal seam gas pressure four individual indicators defined physical meaning , characteristics and performance into practice . Prominent identification of norms and rules require four single index reaches or exceeds the critical value only as a prominent seam and the outburst is because they are from different angles to illustrate and reflect the prominent occurrence , development . In this process , they are indispensable and interdependent , so put forward the concept of the degree of association between the four individual indicators . In this paper, in Huainan mining area of 119 different type of coal body structure coal sample testing , \At the same time , a different type of coal body structure coal sturdy coefficient distribution characteristics . 13 typical examples and focus on analysis of the Anhui of Xiaoxian Golden Colliery and Shanxi Liulin Jinjiazhuang mine test data demonstrated the degree of association between the four individual indicators .

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CLC: > Industrial Technology > Mining Engineering > Mine safety and labor protection > Mine atmosphere > Coal (rock) and gas outburst prevention and treatment
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