| 窄煤柱沿空掘巷煤柱稳定核区理论研究 |
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| 引用本文： | 王永,朱川曲,陈淼明,陈志.窄煤柱沿空掘巷煤柱稳定核区理论研究[J].湖南科技大学学报(自然科学版),2010,25(4). |
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| 作者姓名： | 王永 朱川曲 陈淼明 陈志 |
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| 作者单位： | 湖南科技大学煤矿安全开采技术湖南省重点实验室; |
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| 基金项目： | 国家自然科学基金，湖南省自科基金 |
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| 摘 要： | 阐述了窄煤柱沿空掘巷的实质,运用岩层控制理论,提出窄煤柱沿空掘巷煤柱稳定核区概念,并以煤柱稳定核区的大小作为煤柱稳定性的一个判据,同时给出选取窄煤柱合理宽度的数学公式,并辅以数值计算方法对该理论进行验证.模拟结果证明,选取巷道塑性破坏区半径的4倍范围作为沿空掘巷窄煤柱的宽度是合理的.
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| 关 键 词： | 沿空掘巷 稳定核区 锚杆支护 数值模拟 |
Theory research of the stable central zone of narrow coal pillar along goaf |
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| WANG Yong,ZHU Chuan-qu,CHEN Miao-ming,CHEN Zhi.Theory research of the stable central zone of narrow coal pillar along goaf[J].Journal of Hunan University of Science & Technology(Natural Science Editon),2010,25(4). |
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| Authors: | WANG Yong ZHU Chuan-qu CHEN Miao-ming CHEN Zhi |
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| Institution: | WANG Yong,ZHU Chuan-qu,CHEN Miao-ming,CHEN Zhi(Hunan Key Laboratory of Safe Mining Techniques of Coal Mines,Hunan University of Science and Technology,Xiangtan 411201,China) |
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| Abstract: | The essence of gob-side entry driving with narrow pillar was expounded.The theory of strata control was used,the concept was put forward that of the stable central zone of narrow coal pillar along goaf,and its size was a stability criterion of coal pillar.The mathematical formula was given that of selecting reasonable width of coal pillar,the theory was verify by numerical methods.Simulation results show that,it is reasonable to select the radius of plastic area 4 times as the width of narrow coal pillar al... |
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| Keywords: | roadway driving along goaf the stable central zone bolt support numerical simulation |
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