| 大采高综采工作面应力分布特征的数值模拟分析 |
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| 引用本文： | 熊礼军,查文华,刘小虎.大采高综采工作面应力分布特征的数值模拟分析[J].煤矿安全,2013(2):75-77. |
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| 作者姓名： | 熊礼军 查文华 刘小虎 |
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| 作者单位： | 安徽理工大学 煤矿安全高效开采省部共建教育部重点实验室;安徽理工大学能源与安全学院 |
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| 基金项目： | 国家自然科学基金资助项目(51004002);高等学校博士点新教师基金资助项目(20103415120001);安徽省高校省级自然科学研究资助项目(KJ2012A088) |
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| 摘 要： | 山西某矿3405工作面采用一次采全高的综合机械化的采煤工艺,其矿压显现比较剧烈。为了更好地安全高效回采该工作面,通过FLAC3D数值模拟软件来分析该工作面回采时应力分布特征。结果表明:3405工作面超前支承压力峰值位置距煤壁5 m,影响范围为75 m,应力集中系数为2.3;固定支承压力峰值位置距煤壁15 m,影响范围为45 m,应力集中系数为2.0;工作面拉应力区范围在16 m左右。
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| 关 键 词： | 一次采全高 数值模拟 支承压力 拉应力 |
Numerical Simulation Analysis of Stress Distribution Characteristics in Large Mining Height Fully Mechanized Coal Face |
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| XIONG Li-jun,ZHA Wen-hua,LIU Xiao-hu.Numerical Simulation Analysis of Stress Distribution Characteristics in Large Mining Height Fully Mechanized Coal Face[J].Safety in Coal Mines,2013(2):75-77. |
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| Authors: | XIONG Li-jun ZHA Wen-hua LIU Xiao-hu |
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| Affiliation: | 1,2(1.Provincal and MOE Joint Established Key Laboratory of Mine Safety and High Efficient Mining,Anhui University of Science and Technology,Huainan 232001,China;2.School of Energy and Safety,Anhui University of Science and Technology,Huainan 232001,China) |
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| Abstract: | The NO.3405 working face of a coal mine in Shanxi uses the fully-mechanized mining technique of mining whole height at one times,but its strata behavior is more serious.For better and safely efficient mining in the coal mining face,the characteristics of stress distribution when the working face was mined is anlyzed by FLAC3D numerical simulation software.The research results show that where the peak of abutment pressure in advance is 5 m from coal face in NO.3405 working face,and the influence scope is 75 m from coal face,and the stress concentration coefficient is 2.3;the peak of fixed abutment pressure is 15 m from coal wall,and the influence is 45 m from coal wall,and the stress concentration coefficient is 2.0;the area of tensile stress is about 16 m in the working face. |
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| Keywords: | mining whole height at one times numerical simulation abutment pressure tension stress |
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