| 深部强冲击地压易发矿区厚煤层开采解放层卸压效果数值模拟 |
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| 引用本文： | 唐治,潘一山,李忠华,阎海鹏,史鹏翔,冯瑞.深部强冲击地压易发矿区厚煤层开采解放层卸压效果数值模拟[J].中国地质灾害与防治学报,2011,22(1):128-132. |
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| 作者姓名： | 唐治 潘一山 李忠华 阎海鹏 史鹏翔 冯瑞 |
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| 作者单位： | 辽宁工程技术大学力学与工程学院,辽宁阜新,123000 |
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| 基金项目： | 国家重点基础研究发展计划（2010CB226803） |
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| 摘 要： | 为研究深部强冲击厚煤层开采上、下解放层的卸压效果。采用数值模拟方法,分析不开采解放层,开采下解放层,开采上、下解放层条件下,被解放层的应力变化情况及应力变化规律,计算开采下解放层后的合理卸压角,确定解放层平巷位置。模拟结果表明开采上、下解放层后,应力明显减小,但仍存在高应力区,易发生冲击地压,必要条件下应采用其它辅助卸压方式。证明了煤壁前方应力增加区域一般在煤壁前方8～25m。该研究为工作面开采设计提供理论指导,对防治冲击地压具有一定的现实意义。
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| 关 键 词： | 冲击地压 深部厚煤层 解放层 合理卸压角 数值模拟 |
Numerical simulation on destressing effects of the deep thick coal seam with high burst liability after mining liberated seams |
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| TANG Zhi,PAN Yi-shan,LI Zhong-hua,YAN Hai-peng,SHI Peng-xiang,FENG Rui.Numerical simulation on destressing effects of the deep thick coal seam with high burst liability after mining liberated seams[J].The Chinese Journal of Geological Hazard and Control,2011,22(1):128-132. |
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| Authors: | TANG Zhi PAN Yi-shan LI Zhong-hua YAN Hai-peng SHI Peng-xiang FENG Rui |
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| Institution: | (School of Mechanics and Engineering,Liaoning Technical University,Liaoning Fuxin 123000,China) |
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| Abstract: | In order to study the destressing effects of the deep thick coal seams with high burst liability after mining upper and lower protective seams,the method of numerical simulation is adopted to analyze the stress change of the protected seam under the condition of non-mining protective seams,mining lower protective seams and mining upper and lower protective seams,and the rule of the stress change,to compute the reasonable distressing angle of the mining protective seam,and to determine the tunnel’s position of the protective seam.It was proved by the model that the stress reduced obviously after mining upper and lower protective seams,but the high stress area still exists with easy occurrence of rock burst.Therefore,other aided pressure relief system should be adopted under necessary condition;and it was proved that the stress increased area is mostly located 8 ～ 25m in the front of coal wall.This study provides a theoretical guidance for the mining design of the workface and it is of practical significance to prevent rock burst. |
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| Keywords: | rock burst deep thick coal seam protective seam reasonable destressing angle numerical simulation |
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