| 巷道底煤厚度对矿震诱发底鼓冲击研究 |
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| 引用本文： | 刘建刚,郁钟铭,刘 赛,井广成,刘洪洋,李志刚.巷道底煤厚度对矿震诱发底鼓冲击研究[J].中国矿业,2016,25(11). |
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| 作者姓名： | 刘建刚 郁钟铭 刘 赛 井广成 刘洪洋 李志刚 |
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| 作者单位： | 六盘水师范学院 矿业工程系,六盘水师范学院 矿业工程系,中国矿业大学 矿业工程学院,中国矿业大学 矿业工程学院,六盘水师范学院 矿业工程系,六盘水师范学院 矿业工程系 |
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| 基金项目： | 贵州省科技厅技术基金项目（黔科合LH字[2015]7619号）；国家自然科学基金青年科学基金项目(51204165)；采矿工程省级特色重点学科（黔学位合字ZDXK[2015]9号） |
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| 摘 要： | 基于FLAC2D数值模拟软件分析巷道底煤厚度对矿震诱发底鼓冲击的动态响应规律。结果表明:随着底煤厚度的增加,动力扰动下巷道底板水平应力峰值先升高后降低并逐渐向底板深处转移,底板垂直位移峰值、塑性区深度及最大能量密度均呈非线性增加,且增加趋势越来越弱,并趋于稳定;动力扰动下特厚煤层巷道极易发生底鼓冲击动力灾害,动力效应明显;现场矿震演化规律分析验证数值模拟结论的合理性。研究成果可为特厚煤层巷道底冲击矿压防治提供借鉴。
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| 关 键 词： | 底煤厚度 矿震 动态响应 底鼓冲击 特厚煤层 |
| 收稿时间： | 2016/4/10 0:00:00 |
| 修稿时间： | 2016/6/27 0:00:00 |
Study on Different Bottom Coal Thickness on Floor Rock-burst Induced by Mine Tremor |
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| Liu Jian-gang,Yu Zhong-ming,Liu Sai,Jing Guang-cheng,Liu Hong-yang and Li Zhi-gang.Study on Different Bottom Coal Thickness on Floor Rock-burst Induced by Mine Tremor[J].China Mining Magazine,2016,25(11). |
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| Authors: | Liu Jian-gang Yu Zhong-ming Liu Sai Jing Guang-cheng Liu Hong-yang and Li Zhi-gang |
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| Affiliation: | Department of Mining Engineering,Liupanshui Normal University,Department of Mining Engineering,Liupanshui Normal University,School of Mining Engineering,China University of Mining And Technology,School of Mining Engineering,China University of Mining And Technology,Department of Mining Engineering,Liupanshui Normal University,Department of Mining Engineering,Liupanshui Normal University |
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| Abstract: | Analysis dynamic response law of roadway floor rock-burst induced dynamic disturbance at different bottom coal thickness by using FLAC2D. The results showed that the maximum horizontal stress increases at first and then decreases and gradually transfers toward floor depths under dynamic disturbance, the floor vertical displacement peak and plastic depth and maximum energy density all increase nonlinearly with the increase of bottom coal thickness, meanwhile the increase trend gets more and more weakly. It is easy to occurr floor rock-burst for roadway induced dynamic disturbance in extremely thick coal seam, and the dynamic effect is significant. The rationality of numerical simulation analysis is verified by engineering example. The study conclusions will provide reference for explore on roadway floor rock-burst prevention of extremely thick coal seam and other similar conditions. |
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| Keywords: | bottom coal thickness mine tremor dynamic response floor rock-burst extremely thick coal seam |
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