深部动压回采巷道的矿压时空分布规律研究
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TD353

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国家自然基金(50774001);安徽理工大学青年科学研究基金资助(2005QJ030)


Research on Temporal-Spatial Distribution Laws of Surrounding Rock Pressure of Deep Mining Roadway under Dynamic Pressure
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    摘要:

    开采深度增加,地质力学环境比浅部复杂,深部动压回采巷道仍沿用浅中部的超前加强支护范围已不能有效控制动压巷道围岩变形。针对埋深762 m的某矿回采工作面顺槽的支护和超前加强支护范围,分析得出:回采和掘巷期间围岩变形不同,掘巷期间以底臌为主,而回采期间以顶板下沉为主;深部动压回采巷道超前支承压力影响范围明显增大,加强支护范围应大于采动剧烈影响区5~10 m。

    Abstract:

    With mining depth increasing,the geological and mechanical conditions of roadway become more complicated compared with those in shallow roadway,if the range of fore-reinforce supporting for shallow or middle roadway is used to deep mining roadway with dynamic pressure the surrounding rock deformation of deep mining roadway will be not effectively controlled.The paper has analyzed the supporting and fore-reinforce supporting of the crossheading in a working face with a buried depth of 762 m,and the research results show that the deformation of roadway surrounding rock in roadway driving mainly is floor heave,and in mining mainly is roof subsidence,the influence range of fore support pressure of deep mining roadway effected by dynamic pressure enlarge markedly,the range of fore-reinforce supporting should is larger 5~10 m than the influence range of dynamic pressure.

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刘增辉,高谦,华心祝,李英明.深部动压回采巷道的矿压时空分布规律研究[J].矿业研究与开发,2010,(2):37-39,46

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  • 在线发布日期: 2012-06-17
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