The High Stress Soft Coal Seam Face Prediction Sensitive Index Critical Value Research

Yong Jiang Zhang

doi:10.4028/www.scientific.net/AMM.84-85.224

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 84-85The High Stress Soft Coal Seam Face Prediction...

The High Stress Soft Coal Seam Face Prediction Sensitive Index Critical Value Research

Abstract:

Huainan mining area for the serious outburst Xinzhuangzi B4 soft coal mines in high stress, In order to improve the mining face outburst forecast accuracy, reduce the amount of works against sudden, With the theoretical analysis, lab tests and field trials of the combination of a variety of means, Of pilot area received 56204 B4 coal mining Face of sensitive indicators of the critical value: S₀＝4.0kg/m,K₁=0.3 mL/(g·min^1/2), The test area 1380m mining engineering application results show that the face is not obvious prediction accuracy rate of 100%. Study to determine the indicators and their threshold reasonable and effective, in line with the actual situation of test area, with a certain application value.

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Periodical:

Applied Mechanics and Materials (Volumes 84-85)

Pages:

224-227

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.84-85.224

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Online since:

August 2011

Authors:

Yong Jiang Zhang

Keywords:

High Stress, Sensitive Index, Soft Coal Seam

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