Numerical Simulation Studies on Burst Tendency of Coal Layers at Linjiang in Yong’an Coal Mine, Jilin Province
详细信息
- 责任者：Wang Shijuan (School of Mechanics and Engineering ; Liaoning Technical University ; Fuxin 123000 ; China) ; Pan Yishan
- 刊名：The Chinese Journal of Geological Hazard and Control
- 出版年：2011
- 卷期：22(2)
- 关键词：煤层 ; coal seam ; 岩爆 ; rock bursts ; 吉林 ; Jilin Province
- 页码：p.99-103
- 图表：3 illus., 1 table, 13 refs.
- 分类号：1004
- 出版序号：1056
- issnNo：ISSN1003-8035
- isbnNo：CN11-2825/P
摘要
Linjiang-Yong’an coal mine lies in complex geological structure zone and has entered into the deep mining stage, the mine pressure of coal mining cause bigger threat for production safety. The authors studied on burst tendency numerical simulations and analyzed the size and the distribution of horizontal stress, vertical stress. The results were as following: First, area of stress concentration appears complex geological structure zone, namely, burst tendency is relatively strong. Second, the maximum horizontal stress is close to the gravitational stress. The maximum vertical stress is 1.8 times more than the gravitational stress.The maximum horizontal stress and the maximum vertical stress all appear in coal annihilation. Third, the results obtained by numerical simulation agree well with actual mining.
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