| 深部开采覆岩应力变化规律模拟实验研究 |
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| 引用本文： | 徐连满,潘一山,李忠华,王爱文,耿琳.深部开采覆岩应力变化规律模拟实验研究[J].中国地质灾害与防治学报,2011,22(3):61-66. |
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| 作者姓名： | 徐连满 潘一山 李忠华 王爱文 耿琳 |
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| 作者单位： | 辽宁工程技术大学力学与工程学院,辽宁阜新,123000 |
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| 基金项目： | 国家重点基础研究发展规划(973)项目 |
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| 摘 要： | 为了研究深部开采条件下覆岩结构运动所引发的动力破坏特征及巷道围岩中采动支承压力分布规律,以某矿20180工作面覆岩为研究对象,通过相似材料模拟实验,得出了深部开采条件下覆岩应力变化规律。结果表明:顶板垮落规律显著,初次来压步距较长,周期来压步距基本相似;开采过程中底板与顶板支撑压力是动态变化的,并具有同步性;随着顶板岩层高度的增加,应力集中系数逐渐减小。根据底板和顶板的应力变化规律,将底板和顶板划分为五个区域,为深部开采条件下工作面巷道超前支护,采空区瓦斯抽放及矿压控制提供可靠理论依据。
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| 关 键 词： | 深部开采 覆岩 应力集中系数 应力峰值 |
Similarity simulation experiment of deformation of deep mining-induced overburden stress |
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| XU Lian-man,PAN Yi-shan,LI Zhong-hua,WANG Ai-wen,GENG Lin.Similarity simulation experiment of deformation of deep mining-induced overburden stress[J].The Chinese Journal of Geological Hazard and Control,2011,22(3):61-66. |
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| Authors: | XU Lian-man PAN Yi-shan LI Zhong-hua WANG Ai-wen GENG Lin |
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| Institution: | XU Lian-man,PAN Yi-shan,LI Zhong-hua,WANG Ai-wen,GENG Lin(School of Mechanics and Engineering,Liaoning Technical University,Fuxin 123000,China) |
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| Abstract: | Based on overburden of 20180 face of mine,the development law of dynamic failure features and mining abutment pressure in the surrounding rock by deep mining-induced overburden structure movements have been got through the similar material simulation test study.The results for this research were as following： Roof breaking law is distinct,the first weighting step distance is longer,and the periodic weighting step distance is similar basically;In the process of mining,supporting pressure of bottom plate and top plate is dynamic and changing with synchronization.The factor decreases with the increasing of the height of roof rock.The research results can be the theoretic basis for the deep mining.According to the change rule of roof and bottom,roof and bottom are divided into five areas,these can be the theoretic basis for the fore support for heading faces in the deep mining,goaf gas drainage and mining pressure control. |
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| Keywords: | deep mining overburden factor of stress concentration peak stress |
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