耿村煤矿采动煤岩体应力分布演化规律及应用研究.pdf

硕士学位论文 耿村煤矿采动煤岩体应力分布演化规律及 应用研究 Study on Evolution Law and Application of Stress Distribution of Mining Coal Rock Mass in Gengcun Coal Mine 煤炭资源与安全开采国家重点实验室自主研究课题（SKLCRSM15X03） 国家自然科学基金（51674254） 国家重点研究发展计划（2016YFC0801404） 作 者孙英豪 导 师王恩元 教授 中国矿业大学 二〇一九年五月 万方数据 学位论文使用授权声明学位论文使用授权声明 本人完全了解中国矿业大学有关保留、使用学位论文的规定，同意本人所撰 写的学位论文的使用授权按照学校的管理规定处理 作为申请学位的条件之一， 学位论文著作权拥有者须授权所在学校拥有学位 论文的部分使用权，即①学校档案馆和图书馆有权保留学位论文的纸质版和电 子版，可以使用影印、缩印或扫描等复制手段保存和汇编学位论文；②为教学和 科研目的，学校档案馆和图书馆可以将公开的学位论文作为资料在档案馆、图书 馆等场所或在校园网上供校内师生阅读、浏览。另外，根据有关法规，同意中国 国家图书馆保存研究生学位论文。 （保密的学位论文在解密后适用本授权书） 。 作者签名 导师签名 年 月 日 年 月 日 万方数据 中图分类号 TD76 学校代码 10290 UDC 622 密 级 公开 中国矿业大学 学术型硕士学位论文 耿村煤矿采动煤岩体应力分布演化规律及应 用研究 Study on Evolution Law and Application of Stress Distribution of Mining Coal Rock Mass in Gengcun Coal Mine 作 者 孙英豪 导 师 王恩元 教授 申请学位 学历硕士 培养单位 安全工程学院 学科专业 安全科学与工程 研究方向 安全监测监控 答辩委员会主席 蒋曙光 评 阅 人 杨永良 张兴华 二○一九年五月 万方数据 致谢致谢 本论文从选题到完稿，无不凝聚着王恩元教授的心血，在整个论文的成文过 程中，王老师为我指点迷津，开拓研究思路，精心点拨、热忱鼓励，给予了我细 心的指导。导师严谨求实的科研态度、踏踏实实的治学精神，不仅授我以文，而 且教我做人，虽历时三载，却给以终生受益无穷之道。在此，谨向最尊敬的王老 师致以诚挚的谢意和崇高的敬意 特别感谢沈荣喜副教授三年来在学业和生活上的悉心关怀和照顾 沈老师循 循善诱的教导和不拘一格的科研思路给予我无限的启迪， 他那诲人不倦的高尚师 德， 严于律己、 宽以待人的崇高风范， 平易近人的人格魅力是我一生学习的榜样 感谢刘贞堂教授、李忠辉教授、刘晓斐副教授、赵恩来讲师、冯小军讲师、 欧建春副研究员、李楠副研究员在日常学习过程中给予的细心指导 感谢钱继发博士、李德行博士、钮月博士、贾海珊博士、狄洋阳博士在日常 科研生活中的帮助与支持 感谢张瑞硕士、程富起硕士、夏善奎硕士、王聪硕士、郑向欣硕士、杨帅硕 士、杨瑞鹏硕士、刘浩雄硕士、张酉年博士、魏洋硕士一起相伴走过的三年，分 别之际祝友谊地久天长 感谢张酉年硕士在论文现场方面给予的帮助 感谢课题室其余师弟师妹们以及师兄师姐在三年里生活以及科研上的帮助 感谢河南能源集团义马耿村煤矿杨岁寒科长、 刘聚友副科长、 技术员时志伟、 吴强、 张学峰在现场试验及资料收集过程中给予的帮助感谢徐州福安科技有限 公司王喜元工程师、金波工程师、李宝林工程师、赵明楠工程师在论文中数据采 集软件方面给予的大量帮助 感谢中国矿业大学安全工程学院的领导和各位老师所提供的优越学习环境 和条件 感谢论文中所引用参考文献的所有作者， 他们卓有成效的研究成果是我的论 文完成的基石 感谢各位专家、教授在百忙之中审阅本文，并热切地希望得到您的指教 最后要特别感谢我的家人多年来对我学业上的支持和鼓励， 感谢我的父母在 我生活上的照顾，没有他们就没有今天的我，言树之背，养育之恩，无以回报， 他们的恩情我将永远铭记 万方数据 I 摘要摘要 河南能源集团义马矿区耿村煤矿开采深度大、煤质较硬、煤层厚度大、冲击 倾向性高，其 13230 工作面具有强冲击危险性。 在矿井安全生产过程中如何采取 防冲措施，特别是针对 13230 工作面地质特点采取有针对性的防冲措施，很大程 度上取决于工作面采动煤岩体的应力大小和空间分布情况。本文从理论分析、数 值模拟和现场实际监测三个方面， 对 13230 工作面回采过程中的采动煤岩体应力 分布演化规律进行了研究，研究工作及主要成果有 ⑴在13230工作面下巷内帮的实体煤内施工钻孔安装应力监测传感器，建立 了采动应力实时监测系统，对回采过程中的采动应力进行实时监测，分析了采动 应力的变化趋势。 现场实测结果显示随着工作面的回采，采动煤岩体应力呈现先 缓慢增长，而后急剧增加，达到峰值后呈现逐渐下降的趋势。 ⑵基于 FLAC3D 数值模拟软件，建立了 13230 工作面三维数值模型，模拟 分析了工作面回采前后采动煤岩体应力的分布演化规律。结果显示，13230 工作 面采动超前影响距离约为 170 米。 ⑶研究分析了采动应力对冲击地压的前兆响应特征，与微震、电磁辐射以及 钻屑量参数进行了对比，综合分析了各参数对冲击地压前兆的提前响应时间。结 果显示，各监测指标对冲击地压有较明显的响应特征，对冲击地压的前兆均有一 定的提前响应时间。 研究结果揭示了工作面采动煤岩体的应力分布规律及对冲击地压的响应特 征，为矿井的防冲工作提供参考，为矿井的安全生产提供保障。 本论文含图 50 幅，表 6 个，参考文献 102 篇。 关键字关键字采动应力；数值模拟；应力监测；前兆响应 万方数据 III Abstract The Gengcun Coal Mine of Henan Energy Group Yima Mine has a large mining depth, hard coal quality, large coal seam thickness and high impact tendency. Its 13230 working face has a strong impact risk. How to take anti-shock measures in the safe production process of mines, especially the targeted anti-shock measures for the geological characteristics of the 13230 working face, depends to a large extent on the stress magnitude and spatial distribution of the coal rock mass in the working face. From the theoretical analysis, numerical simulation and on-site actual monitoring, this paper studies the evolution law of stress distribution of mining coal rock mass during the mining process of 13230 working face. The research work and main achievements are as follows 1 In the solid coal mining under the 13230 working face, the borehole installation stress monitoring sensor is built, and the real-time monitoring system of mining stress is established. The mining stress in the mining process is monitored in real time, and the change trend of mining stress is analyzed. The field test results show that with the recovery of the working face, and the stress of the mining coal rock body first increases slowly, then increases sharply, and reaches the peak and then shows the trend of falling cliff type. 2 Based on the FLAC3D numerical simulation software, a three-dimensional numerical model of the 13230 working face was established, and the distribution evolution law of the mining rock mass before and after mining was simulated. The results show that the 1330 working face mining lead distance is about 170 meters. 3 The precursor response characteristics of mining stress to impact ground pressure are analyzed and compared with microseismic, electromagnetic radiation and cuttings parameters. The early response time of each parameter to the impact pressure precursor is comprehensively analyzed. The results show that each monitoring index has obvious response characteristics to the impact ground pressure, and has a certain early response time for the precursor of the impact ground pressure. The research results reveal the stress distribution law of coal mining body and the response characteristics to the rockburst, which provides a basis for the mines anti-shock work and provides guarantee for the safe production of the mine. This paper contains 50 pictures, 6 tables, and 102 references. Keywords mining stress; numerical simulation; stress monitoring; precursor 万方数据 IV response 万方数据 V 目录目录 摘要摘要 ............................................................................................................................... I 目录目录 .............................................................................................................................. V 图清单图清单 ........................................................................................................................ IX 表清单表清单 ....................................................................................................................... XII 1 绪论绪论 ............................................................................................................................ 1 1.1 研究背景及意义...................................................................................................... 1 1.2 国内外研究现状...................................................................................................... 2 1.3 存在问题及不足...................................................................................................... 6 1.4 主要研究内容及技术路线...................................................................................... 6 2 采动应力分布规律分析采动应力分布规律分析 ............................................................................................ 8 2.1 采动应力分布演化规律.......................................................................................... 8 2.2 钻孔周围应力分布计算........................................................................................ 11 2.3 监测值与真实采动应力关系............................................................................... 14 2.4 本章小结............................................................................................................... 15 3 采动应力分布演化规律的现场研究采动应力分布演化规律的现场研究 ...................................................................... 16 3.1 矿井概况................................................................................................................ 16 3.2 采动应力监测技术分析........................................................................................ 19 3.3 采动应力测点布置................................................................................................ 22 3.4 应力监测结果及分析............................................................................................ 25 3.5 液压支架工作阻力变化研究............................................................................... 32 3.6 本章小结................................................................................................................ 34 4 采动煤岩体应力的数值模拟采动煤岩体应力的数值模拟 .................................................................................. 36 4.1 FLAC3D 数值模拟软件 ....................................................................................... 36 4.2 采动煤岩体应力模拟参数设定............................................................................ 37 4.3 采动应力数值模拟结果分析................................................................................ 40 4.4 现场实测与数值模拟结果对比............................................................................ 45 4.5 本章小结.............................................................................................................. 47 5 耿村煤矿耿村煤矿冲击地压前兆规律分析冲击地压前兆规律分析 .......................................................................... 49 万方数据 VI 5.1 微震对冲击地压的前兆响应规律分析................................................................ 49 5.2 电磁辐射对冲击地压的前兆响应规律分析........................................................ 51 5.3 钻屑量对冲击地压的前兆响应规律分析............................................................ 53 5.4 采动应力对冲击地压的前兆响应规律分析........................................................ 55 5.5 本章小结................................................................................................................ 57 6 总结与展望总结与展望 .............................................................................................................. 59 6.1 全文总结............................................................................................................... 59 6.2 主要创新点........................................................................................................... 62 6.3 展望....................................................................................................................... 62 参考参考文献文献 ..................................................................................................................... 63 作者简介作者简介 ..................................................................................................................... 69 学位论文原创性声明学位论文原创性声明 ................................................................................................. 70 学位论文数据集学位论文数据集 ......................................................................................................... 71 万方数据 VII Contents Abstract ...................................................................................................................... III Contents .................................................................................................................... VII List of Figures ............................................................................................................ IX List of Tables ............................................................................................................. XII 1 Introduction ............................................................................................................... 1 1.1 Research Background and Significance ................................................................... 1 1.2 Research Status at Home and Abroad ...................................................................... 2 1.3 Problems and Deficiencies ....................................................................................... 6 1.4 Research Contents and Technical Route .................................................................. 6 2 Analysis of Mining Stress Distribution Law ........................................................... 8 2.1 Evolution law of mining stress distribution ............................................................. 8 2.2 Calculation of stress distribution around the borehole .......................................... 11 2.3 Relationship between monitored value and real mining stress .............................. 14 2.4 Chapter Summary .................................................................................................. 15 3 Field study on evolution law of mining stress distribution ................................. 16 3.1 Mine Overview ...................................................................................................... 16 3.2 Analysis of mining stress monitoring technology .................................................. 19 3.3 Stress Measuring Points ......................................................................................... 22 3.4 Stress Monitoring Results and Analysis ................................................................ 25 3.5 Research on Working Resistance Change of Hydraulic Support ........................... 32 3.6 Chapter Summary .................................................................................................. 34 4 Numerical Simulation of Mining Rock Mass Stress ............................................ 36 4.1 FLAC3D numerical simulation software ............................................................... 36 4.2 Setting parameters of mining coal rock mass stress simulation ............................ 37 4.3 Analysis of numerical simulation results of mining stress .................................... 40 4.4 Comparison of field measurement and numerical simulation results .................... 45 4.5 Chapter Summary ................................................................................................ 47 5 Analysis of the precursory law of impact ground pressure in Gengcun Coal Mine ............................................................................................................................. 49 万方数据 VIII 5.1 Analysis of the Precursor Response Law of Microseism to Impact Earth Pressure ...................................................................................................................................... 49 5.2 Analysis of the Precursor Response Law of Electromagnetic Radiation to Rock Burst ............................................................................................................................. 51 5.3 Analysis of the Precursor Response Law of Cuttings Volume to Rock Burst....... 53 5.4 Analysis of the Precursor Response Law of Mining Stress to Rock Burst ............ 55 5.5 Chapter Summary .................................................................................................. 57 6 Conclusions and Prospects ..................................................................................... 59 6.1 Conclusions ............................................................................................................ 59 6.2 Main Innovation Point ........................................................................................... 62 6.3 Prospects ................................................................................................................ 62 References ................................................................................................................... 63 Author’s Resume ........................................................................................................ 69 Declaration of Thesis Originality ............................................................................. 70 Thesis Data Collection ............................................................................................... 71 万方数据 IX 图清单图清单 List of Figures