| 遗留煤柱影响区沿空掘巷支护技术研究 |
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| 引用本文： | 李承军,侯圣权. 遗留煤柱影响区沿空掘巷支护技术研究[J]. 煤矿安全, 2011, 42(4): 25-27,41 |
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| 作者姓名： | 李承军 侯圣权 |
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| 作者单位： | 1. 中国矿业大学,矿业工程学院,江苏,徐州,221008;安徽恒源煤电股份有限公司恒源煤矿,安徽,淮北,235162
2. 安徽省煤炭科学研究院,安徽,合肥,230001 |
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| 摘 要： | 为有效控制遗留煤柱影响区沿空巷道的围岩稳定,采用数值模拟的方法,对遗留煤柱上覆岩层应力场及位移场分布规律进行了研究,初步探讨了遗留煤柱影响区沿空巷道支护技术。数值计算结果表明,遗留煤柱对4煤层应力集中影响范围大约为煤柱前后50 m区域,最大集中应力程度达到原岩应力的1.65倍。在恒源煤矿454工作面巷道施工中,以数值计算结果为指导,对遗留煤柱影响区采用高强锚梁网索支护技术,取得了良好的技术效果。
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| 关 键 词： | 遗留煤柱 应力集中区 沿空巷道 数值模拟 |
Research on the Support technology of Gob-Side Entry Affected by the Logacy Pillar |
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| LI Cheng-jun,HOU Sheng-quan. Research on the Support technology of Gob-Side Entry Affected by the Logacy Pillar[J]. Safety in Coal Mines, 2011, 42(4): 25-27,41 |
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| Authors: | LI Cheng-jun HOU Sheng-quan |
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| Affiliation: | LI Cheng-jun1,2,HOU Sheng-quan3(1.School of Mines,China University of Mining and Technology,Xuzhou 221008,China,2.Anhui Heng-yuan Coal Mine,Huaibei 235100,3.Anhui Coal Research Institute,Hefei 230001,China) |
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| Abstract: | In order to control the stability of gob-side entry which affected by the legacy pillar,the distribution law of displacement and stress field which in the overlying strata was researched in the paper through the method of numerical simulation.And also the suppott technology of gob-side entry affected by lagacy pillar was preliminary studied.The numerial simulation rusults showed that,the area affected by legacy pillar was 50 m around the pillar in the 4# coal seam,and the concentrated stress was 1.65 times ... |
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| Keywords: | logacy pillar concentrated stress area gob-side entry numerical simulation |
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