| 条带开采留设煤柱置换开采方法的数值模拟研究 |
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| 引用本文： | 施喜书,许家林,朱卫兵,李恩全. 条带开采留设煤柱置换开采方法的数值模拟研究[J]. 煤矿安全, 2009, 40(1) |
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| 作者姓名： | 施喜书 许家林 朱卫兵 李恩全 |
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| 作者单位： | 煤炭资源与安全开采国家重点实验室,江苏,徐州,221008;中国矿业大学矿业工程学院,江苏,徐州,221008 |
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| 基金项目： | 国家重点基础研究发展规划(973计划)，教育部新世纪优秀人才支持计划，教育部高等学校博士学科点专项科研基金 |
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| 摘 要： | 如何在不影响地表建筑物的前提下,对条带开采留设煤柱进行再次开采,提高煤炭资源的采出率是煤矿开采面临的技术难题。本文利用UDEC数值模拟软件,对采用在条带开采留设煤柱内开挖充填置换巷道的开采方法进行了数值模拟,研究得出:在回采率为40%的条带开采基础上,置换开采可将回采率提高10%,且没有破坏煤柱和上覆岩层的稳定性;充填巷的条数要控制在两条以内并且要集中布置在留设煤柱中央;对于多个留设煤柱应采用顺序开采等结论。
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| 关 键 词： | 条带开采 置换开采 充填巷 数值模拟 UDEC |
Numerical Study on Substitution Extraction in Coal Pillar of Strip Mining |
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| SHI Xi-shu,XU Jia-lin,ZHU Wei-bing,LI En-quan. Numerical Study on Substitution Extraction in Coal Pillar of Strip Mining[J]. Safety in Coal Mines, 2009, 40(1) |
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| Authors: | SHI Xi-shu XU Jia-lin ZHU Wei-bing LI En-quan |
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| Affiliation: | 1.State Key Laboratory of Coal Resources and Mine Safety;Xuzhou 221008;China;2.School of Mining Engineering;China University of Mining & Technology;China |
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| Abstract: | How to mine in the coal pillar of strip mining for the second time without impacting the building on the ground is a solution to improve the mining recovery rate of coal resource.Substitution extraction is a new mining method,which excavate filling roadways in the coal pillar of strip mining.The method is simulated by UDEC in the paper.The result indicates that coal pillar and overlying strata stay stable after substitution extraction on the basis of strip mining with recovery ratio of 40%.The filling roadw... |
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| Keywords: | UDEC |
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