| 浅埋厚煤层分层开采保护煤柱合理宽度研究 |
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| 引用本文： | 彭文庆,王卫军.浅埋厚煤层分层开采保护煤柱合理宽度研究[J].煤炭科学技术,2008,36(11). |
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| 作者姓名： | 彭文庆 王卫军 |
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| 作者单位： | 煤矿安全开采技术湖南省重点实验室;湖南科技大学能源与安全工程学院; |
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| 基金项目： | 国家重点基础研究发展计划(973)资助项目，国家自然科学基金资助项目 |
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| 摘 要： | 为了确定浅埋厚煤层分层开采保护煤柱的合理宽度以及获知影响煤柱宽度留设的主要因素,采用弹塑性极限平衡理论分析煤层埋藏深度、煤层厚度、煤层倾角、煤的硬度、巷道断面大小和支护阻力等对保护煤柱合理宽度留设的影响;并利用相似材料模拟试验确定活鸡兔矿井1-2煤层的保护煤柱的最终合理宽度.结果表明煤柱稳定的基本条件是弹性核的宽度应不小于煤柱高度(即采高)的2倍;煤柱宽度的合理留设及采空和巷道侧对煤柱实施有效的支撑作用是保证煤柱及巷道围岩稳定的关键;活鸡兔矿井首采区上分层保护煤柱的宽度为20m,下分层保护煤柱的宽度定为12 m时,能有效控制煤柱的总变形量.
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| 关 键 词： | 煤柱稳定性 浅埋厚煤层 合理宽度 相似模拟 |
Research on rational width of protective coal pillar for slicing mining in thick seam with shallow depth |
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| PENG Wen-qing,WANG Wei-jun.Research on rational width of protective coal pillar for slicing mining in thick seam with shallow depth[J].Coal Science and Technology,2008,36(11). |
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| Authors: | PENG Wen-qing WANG Wei-jun |
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| Affiliation: | PENG Wen-qing1,2,WANG Wei-jun1,2(1.Hunan Provincial Key Lab of Safety Coal Mining Technology,Xiangtan 411201,China,2.School of Energy , Safety Engineering,Hunan University of Science , Technology,China) |
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| Abstract: | In order to set the rational width of the protective coal pillar for the slicing mining in thick seam with a shallow mining depth and to have the main factors affected to the coal pillar width,the elastic-plastic limit equilibrium theory was applied to analyze the seam depth,seam thickness,seam inclination angle,coal hardness,gateway cross section,support resistance and other affected to the rational width set for the protective coal pillar.The simulation experiment with the similar material was applied to ... |
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| Keywords: | stability of coal pillar thick seam with shallow depth rational width similar simulation |
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