| 采空区覆岩失稳引发冲击性灾害机理 |
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| 引用本文： | 李伟.采空区覆岩失稳引发冲击性灾害机理[J].辽宁工程技术大学学报(自然科学版),2010,29(1). |
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| 作者姓名： | 李伟 |
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| 作者单位： | 北京科技大学,土木与环境工程学院,北京,100083;兖州煤业股份有限公司,南屯煤矿,山东,邹城,273515 |
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| 基金项目： | “863”重点项目;;国家“十一五”科技支撑基金资助项目(2006BAK04B02) |
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| 摘 要： | 为了研究造成大面积顶板向采空区快速运动形成气体灾害的原因。通过采用对综放采场覆岩结构形成条件的分析和研究。提出了综放采场覆岩大、小结构的概念,分析了综放采场覆岩结构失稳的几种形式,对覆岩结构失稳引发冲击性灾害的机理进行了探讨,采场覆岩大结构的瞬时失稳是造成大面积顶板向采空区快速运动形成气体灾害的根本原因。该结论可以作为开采期间的地压控制和采空区回采结束后的安全封闭设计的依据和参考。
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| 关 键 词： | 采空区 覆岩结构 冲击性灾害 机理分析 |
Mechanism analysis on shock disaster caused by Overburden strata instability in gob |
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| LI Wei.Mechanism analysis on shock disaster caused by Overburden strata instability in gob[J].Journal of Liaoning Technical University (Natural Science Edition),2010,29(1). |
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| Authors: | LI Wei |
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| Institution: | 1. Civil and Environment Engineering School;University of Science and Technology Beijing;Beijing 100083;China;2. Yan zhou Coal Mining Company Limited;Zhoucheng 272100;China |
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| Abstract: | A large areal roof fall will swiftly move toward gob and also cause swift air movement and shock disaster in a coal mine. The destructive impact is of significance to the longwall face support,the transport equipment,gate entries,and production safety. In this study,analyzing the forming conditions of the overburden strata structure in a fully mechanized caving longwall face,the conceptual theory called the big and small structure in a full-mechanized caving mining face is proposed. Also,several instability... |
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| Keywords: | gob overburden strata structure impact hazards mechanism analysis |
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