| 浅埋煤层覆岩关键层结构分类 |
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| 引用本文： | 许家林,朱卫兵,王晓振,伊茂森.浅埋煤层覆岩关键层结构分类[J].煤炭学报,2009,34(7):865-870. |
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| 作者姓名： | 许家林 朱卫兵 王晓振 伊茂森 |
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| 作者单位： | 中国矿业大学 煤炭资源与安全开采国家重点实验室，江苏 徐州,221008 |
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| 基金项目： | 国家重点基础研究发展计划(973)基金资助项目(2007CB209400);;教育部新世纪优秀人才支持计划资助项目(NCET-05-0478) |
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| 摘 要： | 以神东矿区浅埋煤层开采为工程背景，对浅埋煤层覆岩关键层结构的类型及其破断失稳特征进行了研究.结果表明,浅埋煤层覆岩关键层结构类型可分为单一关键层和多层关键层结构；单一关键层结构又分为厚硬单一关键层结构、复合单一关键层结构、上煤层已采单一关键层结构3种类型.单一关键层结构是导致浅埋煤层特殊采动损害现象的地质根源，浅埋煤层单一关键层结构采动破断运动不仅对工作面矿压产生影响，同时会影响顶板涌水溃沙和地表沉陷.关键层破断块体结构承担的载荷层厚度大而不能满足砌体梁结构不发生滑落失稳的条件，从而导致关键层破断块体滑落失稳，这是导致神东矿区浅埋煤层单一关键层结构工作面易出现台阶下沉和压架出水等采动损害问题的力学机理.确定了神东矿区浅埋煤层覆岩关键层结构类型的判别方法.
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| 关 键 词： | 浅埋煤层 关键层 涌水溃沙 采动裂隙 压架事故 绿色开采 |
| 收稿时间： | 2008-07-30 |
Classification of key strata structure of overlying strata in shallow coal seam |
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| XU Jia-lin,ZHU Wei-bing,WANG Xiao-zhen,YI Mao-sen.Classification of key strata structure of overlying strata in shallow coal seam[J].Journal of China Coal Society,2009,34(7):865-870. |
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| Authors: | XU Jia-lin ZHU Wei-bing WANG Xiao-zhen YI Mao-sen |
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| Affiliation: | 1.State Key Laboratory of Coal Resource and Mine Safety;China University of Mining and Technology;Xuzhou 221008;2.Shendong Coal Company;China Shenhua Energy Company Limited;Shenmu 719315;China |
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| Abstract: | Based on the engineer background of shallow coal seam extracted in Shendong coal field in China,both the structure type and the breakage and unbalance character of overburden key stratum(KS) were studied as the condition of shallow coal seam.The results show that the structure type of overburden KS can be classified into four groups within two types,single KS structure and multi-KS structure.Single KS structure is divided into thick-rigid group,compound group and over seam extracted group.The unbalance of s... |
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| Keywords: | shallow coal seam key stratum water and sand inrush mining crack fully mechanized supports crushing accident green mining |
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