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| 大倾角厚煤层软弱围岩煤柱支承压力监测分析 | |
| 引用本文： | 刘孔智,伍永平,吴学明,严永胜,张建华,翟锦,于水,毕龙.大倾角厚煤层软弱围岩煤柱支承压力监测分析[J].西安科技大学学报,2011,31(2). |
| 作者姓名： | 刘孔智 伍永平 吴学明 严永胜 张建华 翟锦 于水 毕龙 |
| 作者单位： | 1. 重庆南桐矿业有限责任公司,重庆,万盛,400800 2. 西安科技大学,能源学院,陕西,西安,710054;教育部,西部矿井开采及灾害防治重点实验室,陕西,西安,710054 3. 神华宁夏煤业集团,宁夏,银川,750004 |
| 基金项目： | 国家自然科学基金重大研究计划资助项目，陕西省重点实验室重点项目 |
| 摘 要： | 大倾角软弱围岩环境下,工作面巷道扰动区内煤柱应力变化及分布特征复杂.开采扰动、煤厚及倾角因素的影响易造成区域内巷道围岩局部附加变形失稳和支护失效,而理论推导和定量验证得到的护巷煤柱参数往往与实际差别较大.基于现场地质力学调查,借助钻孔应力探测仪对工作面主运巷下帮护巷煤柱纵向和倾向移动支承压力显现特征进行了监测分析.得出纵向和倾向移动支承压力峰值位置和分布范围,并根据弹塑性极限平衡理论对峰值位置进行了计算和对比分析,为改善巷道维护状态和提高煤炭资源采出率及类似条件下的厚煤层开采提供有益借鉴. |
| 关 键 词： | 大倾角厚煤层 软弱围岩 移动支承压力 极限平衡理论 煤柱 |
Monitoring and analysis of coal pillar abutment pressure in big inclined and thick coal seam |
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| LIU Kong-zhi,WU Yong-ping,WU Xue-ming,YAN Yong-sheng,ZHANG Jian-hua,ZHAI Jin,YU Shui,BI Long.Monitoring and analysis of coal pillar abutment pressure in big inclined and thick coal seam[J].JOurnal of XI’an University of Science and Technology,2011,31(2). | |
| Authors: | LIU Kong-zhi WU Yong-ping WU Xue-ming YAN Yong-sheng ZHANG Jian-hua ZHAI Jin YU Shui BI Long |
| Institution: | LIU Kong-zhi1,WU Yong-ping2,3,WU Xue-ming2,YAN Yong-sheng4,ZHANG Jian-hua4,ZHAI Jin2,YU Shui2,BI Long2,3(1.Chongqing Nantong Mining Co.Ltd,Wansheng 400800,China,2.College of Enerygy Science and Engineering,Xi'an University of Science and Technology,Xi'an 710054,3.Key Laboratory of Western Mine & Hazard Prevention,China Ministry of Education,4.Shenhua-Ningxia Coal Industry Group,Yinchuan 750004,China) |
| Abstract: | On the conditions of large angle and soft rock,the distribution of stress is complex in coal pillar region.Disturbed by mining,coal thickness and angle could easily lead to the additional deformation instability and support failure of local region surrounding rock,however,the actual parameters of pillar are often varied with the reasults obtained by theoretical analysis and quantitative validation.Based on the field geomechanical investigation,and the help of borehole stress detector,the abutment pressure c... |
| Keywords: | big inclined and thick coal seam soft rock mobile abutment pressure limit equilibrium theory coal pillar |
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