寺河矿W2302工作面回风侧巷道群围岩稳定性影响因素及控制对策研究.pdf

山西省煤基重点科技攻关项目（MJ2014-12）资助 硕士学位论文 寺河矿W2302工作面回风侧巷道群围岩稳定 性影响因素及控制对策研究 The Studies of Influence Factors and Control Countermeasures of Surrounding Rock Stability with Roadway Group of Reventilation Side in W2302 Working Face of Sihe Coal Mine 作 者刘建 导 师张益东 教授 中国矿业大学 二〇一八年五月 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 TD353 UDC 622 学校代码 10290 密 级 公开 中国矿业大学 硕士学位论文 寺河矿 W2302 工作面回风侧巷道群围岩稳定性 影响因素及控制对策研究 The Studies of Influence Factors and Control Countermeasures of Surrounding Rock Stability with Roadway Group of Reventilation Side in W2302 Working Face of Sihe Coal Mine 作 者 刘建 导 师 张益东 教授 申请学位 工学硕士 培养单位 矿业工程学院 学科专业 采矿工程 研究方向 岩体力学与岩层控制 答辩委员会主席 冯光明 评 阅 人 盲评 二○一八年五月 万方数据 致谢致谢 光阴似箭，日月如梭，三年的研究生生涯转眼即将结束。回首三年的求学经 历，感慨良多，在这里我想对一直关心我、支持我、帮助我的人们致以最诚挚的 谢意。 首先，我要感谢我的恩师张益东教授，他为人谦逊，平易近人，对待科研严 谨求实，一丝不苟，一直是我学习和做人的榜样。从论文的选题、写作到定稿， 张老师倾注了大量的心血，总是不厌其烦的解答我写作中遇到的疑问和不解，没 有张老师的悉心教导和大力帮助， 就没有论文的顺利完成。 在三年的学习生活中， 张老师授我以文，教我做人，培养我形成了正确的人生观和价值观，为我今后的 工作和学习奠定了坚实的基础。在此，谨向我的导师致以崇高的敬意和衷心的感 谢 感谢季明老师、程敬义老师、张凯老师、张少华高工。感谢以上各位老师在 读研期间对我科研及实验上的指导及帮助。 感谢程亮师兄在读研期间给予我科研和论文上的大力帮助，感谢张明磊、张 猛、郭红军三位师兄对我科研上的帮助。感谢同届于鹏飞、张宗良、陈凯、曹东 亮，师弟王康康、李海珠、陈昭宏等同窗师兄弟在读研期间的陪伴和帮助。 感谢山西晋煤集团寺河矿相关技术人员在论文资料收集和现场数据观测时 的帮助。 感谢我的父母和我的家人，他们不求回报的关爱与至始至终的支持，让我无 论身处何地、 遇到何事都能从容应对。 感谢你们在我遇到困难时能为我排忧解难， 获得成功时能为我庆贺。 论文中引用前人的一些研究成果，在此不能一一列举，谨向他们付出的辛勤 劳动表示敬意和感谢 最后感谢各位专家和教授在百忙中评审本文， 衷心期望能得到您的指导和帮 助 万方数据 I 摘摘 要要 本文以寺河矿高瓦斯矿井 W2302 工作面回风侧巷道群为研究背景，通过现 场观测、理论分析和数值模拟等研究方法，对巷道群围岩稳定性影响因素进行分 析研究。 通过现场实测数据的分析得出巷道群的矿压显现规律， 对现场存在的问题进 行分析，结果表明现行的巷道群布置方案下巷道变形严重，影响正常生产。据此 提出影响巷道群围岩稳定性的因素煤柱宽度、巷道层位、间距及支护因素等。 首先理论分析结合数值模拟计算得出合理煤柱宽度应大于 44.4m，验证了现行煤 柱宽度的合理性；建立煤柱内应力分布和煤柱底板应力传递计算模型，分析煤柱 底板应力传递规律， 得出底板高垂直应力区域主要集中在煤柱底板 9.5m 范围内， 结合底板岩性特征确定合理的垂距为 9.8m；在煤柱宽度和垂距确定条件下模拟 了平距为 6m、8m、10m、12m 的巷道变形和应力分布情况，得出合理的平距为 8m。模拟巷道补强支护与未补强支护条件下巷道的变形情况，结果表明补强后 能够降低 30左右的变形量。 针对影响因素分析结果，提出新的巷道群布置方案、补强方案、针对现场存 在的问题提出相应的控制措施。 利用数值模拟对控制后巷道群进行围岩稳定性效 果分析，结果表明控制效果良好，满足生产通风需求。 该论文有图 77 幅，表 9 个，参考文献 77 篇。 关键词关键词巷道群；煤柱；层位及间距；数值模拟 万方数据 II Abstract This paper takes the back-wind side roadway group of working face of W2302 in high gas mine in Sihe mine as research background, through the s of on-site observation, theoretical analysis and numerical simulation, study on the influencing factors of roadway rock stability. Based on the analysis of field measurement data, the law of mine pressure in the roadway group is obtained, and the problems existing in the site are analyzed. The results show that the current roadway layout scheme has serious roadway deation and affects normal production. Based on this, the factors affecting the stability of surrounding rock of roadway group are proposed coal pillar width, lane level, spacing, support factors and so on. Firstly, the theoretical analysis combined with numerical simulation calculated that the reasonable coal pillar width should be greater than 44.4m, which verified the rationality of the current coal pillar width; established the coal pillar internal stress distribution and the coal pillar floor stress transfer calculation model, and analyzed the stress transmission law of the coal pillar floor. The results show that the high vertical stress area of the floor is mainly concentrated within the 9.5m of the bottom of the coal pillar, and a reasonable vertical distance of 9.8m is determined based on the lithology characteristics of the floor. The deation and stress distribution of the roadway with horizontal distance of 6m, 8m, 10m and 12m were simulated under the conditions of constant coal pillar width and vertical distance, and a reasonable horizontal distance of 8m was obtained. The deation of the roadway under strengthen support and unstrengthen supported conditions was simulated. The results show that the deation can be reduced by about 30 after reinforcement. According to the analysis results of the influencing factors, the new layout of roadway group, the reinforcement scheme, and corresponding control measures for the existing problems on the site are proposed. Solution effect analysis of surrounding rock stability of controlled roadway group using numerical simulation. The results showed that the control effect was good and the production ventilation requirement was met. There are 77 figures, 9 tables and 77 references in the dissertation. Keywords roadway group; coal pillar; levels and spacing; numerical simulation 万方数据 III 目目 录录 摘摘 要要 ........................................................................................................................... I 目目 录录 ........................................................................................................................ III 图清单图清单 ....................................................................................................................... VII 表清单表清单 ....................................................................................................................... XII 变量注释表变量注释表 ............................................................................................................. XIII 1 绪论绪论 ........................................................................................................................... 1 1.1 研究背景及问题的提出 ......................................................................................... 1 1.2 国内外研究现状 ..................................................................................................... 2 1.3 研究目标及研究内容 ............................................................................................. 7 1.4 技术路线 ................................................................................................................. 8 2 W2302 工作面矿压观测及现场问题分析工作面矿压观测及现场问题分析 ............................................................. 10 2.1 W2302 工作面概况 ............................................................................................... 13 2.2 现场矿压观测结果及分析 ................................................................................... 13 2.3 现场存在的问题与分析 ....................................................................................... 29 2.4 底板 W23022 巷未补强分析 ............................................................................... 35 2.5 本章小结 ............................................................................................................... 41 3 W2302 工作面回风侧合理煤柱宽度研究工作面回风侧合理煤柱宽度研究 ............................................................. 42 3.1 煤柱内应力分布理论计算 ................................................................................... 42 3.2 W2302 工作面回风侧合理煤柱宽度计算参数确定 ........................................... 46 3.3 W2302 工作面回风侧合理煤柱宽度 ................................................................... 48 3.4 本章小结 ............................................................................................................... 48 4 W2302 工作面回风侧巷道群合理层位及间距研究工作面回风侧巷道群合理层位及间距研究 ............................................. 49 4.1 煤柱底板应力传递规律 ....................................................................................... 49 4.2 底板 W23022 巷距 W23024 巷最小平距 ........................................................... 53 4.3 底板 W23022 巷合理层位 ................................................................................... 56 4.4 底板 W23022 巷距 W23024 巷合理平距 ........................................................... 63 4.5 本章小结 ............................................................................................................... 67 万方数据 IV 5 W2302 工作面回风侧巷道群围岩稳定工作面回风侧巷道群围岩稳定性现场控制对策及效果分析性现场控制对策及效果分析 ................. 68 5.1 现场控制对策 ....................................................................................................... 68 5.2 控制效果分析 ....................................................................................................... 70 5.3 本章小结 ............................................................................................................... 74 6 结论结论 ......................................................................................................................... 75 参考文献参考文献 ..................................................................................................................... 77 作者简历作者简历 ..................................................................................................................... 82 学位论文原创性声明学位论文原创性声明 ................................................................................................. 84 学位论文数据学位论文数据集集 ......................................................................................................... 85 万方数据 V Contents Abstract ........................................................................................................................ II Contents ....................................................................................................................... V List of Figures ........................................................................................................... VII List of Tables ............................................................................................................ XII List of Variables ..................................................................................................... XIII 1 Introduction ............................................................................................................... 1 1.1 Research Background and Introduction of the Problem .......................................... 1 1.2 Summarize of Research Status and Trend ............................................................... 2 1.3 Objectives and Contents of Research ...................................................................... 7 1.4 Technical Route ........................................................................................................ 8 2 Observation and Problem Analysis of Field in W2302 Working Face .............. 10 2.1 Survey of Working Face in W2302 ........................................................................ 13 2.2 Observation and Analysis of Field Data ................................................................ 13 2.3 Problems and Analysis of On-Site ......................................................................... 29 2.4 No-Strengthening in Roadway W23022 ................................................................ 35 2.5 Brief Summary ....................................................................................................... 41 3 Study on Reasonable Coal Pillar Width of Working Face Reventilation Side in W2302 ......................................................................................................................... 42 3.1 Theoretical Calculation of Stress Distribution in Coal Pillar ................................ 42 3.2 Calculation Parameters of Reasonable Coal Pillar Width of Working Face Reventilation Side in W2302 ....................................................................................... 46 3.3 Reasonable Coal Pillar Width of Working Face Reventilation Side in W2302 ..... 48 3.4 Brief Summary ....................................................................................................... 48 4 Study on Rational Horizon and Spacing of Reventilation Roadway Group in W2302 Working Face ................................................................................................ 49 4.1 Distribution of Initial Stress in the Floor Rock ...................................................... 49 4.2 Minimum Horizontal Distance between Roadway W23022 and W23024 ............ 53 4.3 The Reasonable Level of Roadway W23022 ......................................................... 56 4.4 Reasonable Horizontal Distance Between Roadway W23022 and W23024 ......... 63 万方数据 VI 4.5 Brief Summary ....................................................................................................... 67 5 Control Measures of On-site and Effect Analysis in Surrounding Rock Stability of Reventilation Side Roadway Group in W2302 Working Face .......................... 68 5.1 Control Measures of On-site .................................................................................. 68 5.2 Analysis of Control Effect ..................................................................................... 70 5.3 Brief Summary ....................................................................................................... 74 6 Conclusion ............................................................................................................... 75 References ................................................................................................................... 77 Author Resume .......................................................................................................... 83 Declaration of thesis originality ................................................................................ 84 Thesis Date Collection ............................................................................................... 85 万方数据 VII 图清单图清单 List of Figures 图序号 图名称 页 码 图 1-1 巷道群掘进顺序 1 Figure 1-1 Excavation sequence of the roadway 1 图 1-2 现场巷道群布置方式 2 Figure 1-2 The layout of roadway group on-site 2 图 1-3 煤柱较宽时弹塑性及应力分布 4 Figure 1-3 Elasto-plasticity and stress distribution of wide coal pillars 4 图 1-4 窄煤柱时弹塑性及应力分布 4 Figure 1-4 Elasto-plasticity and stress distribution of narrow coal pillars 4 图 1-5 技术路线图 8 Figure 1-5 The technical route 8 图 2-1 工作面及巷道群位置图 10 Figure 2-1 Location of roadway group and working face 10 图 2-2 矿井通风方式 11 Figure 2-2 Mine ventilation 11 图 2-3 寺河矿 W2302 工作面地层综合柱状图 12 Figure 2-3 Rock layer histogram of workface W2302 12 图 2-4 W2302 工作面回风侧巷道群测点布置图 13 Figure 2-4 Measuring station layout of W2302 workingface 13 图 2-5 测站 1 位置剖面图 14 Figure 2-5 Cross section of number 1 measuring station 14 图 2-6 测站 3 位置剖面图 14 Figure 2-6 Cross section of number 3 measuring station 14 图 2-7 “十字测量”法示意图 14 Figure 2-7 Schematic of “cross measurement“ 14 图 2-8 W23022 巷变形量及变形速率 15 Figure 2-8 Deation and deation rate of W23022 roadway 15 图 2-9 测站 1 深部位移图 16 Figure 2-9 Deep displacement of number 1 measuring station 16 图 2-10 测站 1 处巷道锚杆测力计及深部位移计布置图 17 Figure 2-10 The layout of number1 measuring station deep displacement 17 图 2-11 测站 1 锚杆（索）受力图 18 Figure 2-11 Anchor force of bolt and cable of number1 measuring station 18 图 2-12 测站 2 巷道变形量及变形速率图 19 万方数据 VIII Figure 2-12 Deation and deation rate of number 2 roadway 19 图 2-13 测站 3 巷道