| 厚煤层窄煤柱沿空掘巷中煤柱极限核区计算 |
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| 引用本文： | 贾双春,王家臣,朱建明,马中文.厚煤层窄煤柱沿空掘巷中煤柱极限核区计算[J].中国矿业,2011,20(12). |
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| 作者姓名： | 贾双春 王家臣 朱建明 马中文 |
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| 作者单位： | 1. 中国矿业大学(北京)安全与资源学院,北京,100083
2. 北京航空航天大学交通学院,北京,100191 |
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| 摘 要： | 本文基于厚煤层放顶煤开采中窄煤柱沿空掘巷煤柱所处的特殊环境,考虑煤体材料的应变软化特性,基于黏性材料的SMP(Spatially Mobilized Plane,简称SMP)破坏准则,并依据厚煤层窄煤柱沿空掘巷煤柱在开采过程中所受的支承压力的分布规律,推导出了基于SMP破坏准则的厚煤层开采时煤柱中部极限核区宽度计算公式,并将上述计算公式应用到潞安王庄矿厚煤层窄煤柱放顶煤开采中,实现了厚煤层放顶煤条件下区段窄煤柱沿空掘巷的成功开采,完善了厚煤层下区段窄煤柱稳定的理论,对我国厚煤层窄煤柱开采具有重要的指导意义.
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| 关 键 词： | SMP准则 厚煤层 沿空掘巷 弹性核区 窄煤柱 |
Calculating of the elastic central zone of narrow coal pillar along goaf of coal caving in the thick coal seam |
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| JIA Shuang-chun
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WANG Jia-chen
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ZHU Jian-ming
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MA Zhong-wen.Calculating of the elastic central zone of narrow coal pillar along goaf of coal caving in the thick coal seam[J].China Mining Magazine,2011,20(12). |
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| Authors: | JIA Shuang-chun WANG Jia-chen ZHU Jian-ming MA Zhong-wen |
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| Affiliation: | JIA Shuang-chun1,WANG Jia-chen1,ZHU Jian-ming2,MA Zhong-wen(1.Faculty of Resources and Safety Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China,2.School of Traffic Science and Technology,Beihang University,Beijing 100191,China) |
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| Abstract: | Based on the special environment of coal caving in the thick coal seam,and considering the characteristic of the strain softening for the coal and according to the distribution regularity of the support pressure for the coal pillar in the progress of mining,calculating formulation of the coal pillar for the thick coal seam based on the coherent material SMP(Spatially Mobilized Plane,) failure criterion.In the thick coal seam of the Wangzhuang coal mine,calculating formulation is applied well,and it also con... |
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| Keywords: | SMP failure criterion thick coal seam roadway driving along goaf elastic central zone narrow coal pillar |
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