| 沟谷坡角对浅埋煤层工作面矿压影响的研究 |
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| 引用本文： | 张志强,许家林,王露,朱卫兵.沟谷坡角对浅埋煤层工作面矿压影响的研究[J].采矿与安全工程学报,2011,28(4):560-565. |
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| 作者姓名： | 张志强 许家林 王露 朱卫兵 |
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| 作者单位： | 1. 中国矿业大学煤炭资源与安全开采国家重点实验室,矿业工程学院,江苏徐州 221116;新疆大学地质与勘查工程学院,新疆乌鲁木齐830046
2. 中国矿业大学煤炭资源与安全开采国家重点实验室,矿业工程学院,江苏徐州 221116 |
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| 基金项目： | 国家自然科学基金项目(50974116); 煤炭资源与安全开采国家重点实验室开放研究基金项目(08KF04) |
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| 摘 要： | 针对神东矿区活鸡兔井在沟谷地形下工作面动载矿压灾害问题,通过力学分析和物理模拟实验,就沟谷地形的坡角对工作面动载矿压的影响进行了研究.结果表明:当工作面推进到覆岩主关键层被侵蚀的沟谷地形时,临近上坡面的主关键层破断块体侧向水平挤压力作用较小;随坡角增大,主关键层上覆岩层载荷逐渐增大,块体结构不能满足砌体梁的"S-R"稳定条件而滑落失稳,使亚关键层结构块体承受的载荷迅速增大,导致工作面活柱急剧下缩片帮冒顶严重而发生动载矿压;当坡角小于15°时,工作面一般不会发生动载矿压显现灾害事故.理论分析和模拟结果与现场实测吻合良好.
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| 关 键 词： | 浅埋煤层 沟谷地形 坡角 关键层 工作面矿压 |
Study on Influencing Laws of Gully Slope Angle on Ground Pressure of Working Face in Shallow Coal Seam |
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| ZHANG Zhi-qiang,XU Jia-lin,WANG Lu,ZHU Wei-bing.Study on Influencing Laws of Gully Slope Angle on Ground Pressure of Working Face in Shallow Coal Seam[J].Journal of Mining and Safety Engineering,2011,28(4):560-565. |
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| Authors: | ZHANG Zhi-qiang XU Jia-lin WANG Lu ZHU Wei-bing |
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| Affiliation: | ZHANG Zhi-qiang1,2,XU Jia-lin1,WANG Lu1,ZHU Wei-bing1 (1.State Key Laboratory of Coal Resource and Safe Mining,School of Mines,China University of Mining & Technology,Xuzhou,Jiangsu 221116,China,2.School of Geology & Exploration Engineering,Xinjiang University,Urumuqi,Xinjiang 830046,China) |
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| Abstract: | Considering the dynamic strata pressure accidents happened in the working faces while mining under gully terrain in Huojitu coal mine of Shendong mining area,we have researched the influence of gully slope angle on dynamic strata pressure of working face in shallow coal seam in this paper,by using the methods of mechanical analysis and physical simulation experiments.The results show that when the working face advances under the gully terrain where the primary key strata has been eroded,the lateral horizont... |
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| Keywords: | shallow coal seam gully terrain slope angle key strata dynamic strata pressure |
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