欣源矿综采工作面过走向空巷充填技术研究.pdf

硕士学位论文 欣源矿综采工作面过走向空巷充填技术 研究 Study on Backfill Technique of An Abandoned Roadway along the Mining Direction in A Longwall Face in Xinyuan Coal Mine 作 者秦征远 导 师柏建彪 教授 中国矿业大学 二〇一七年五月 国家自然科学基金项目（51574227, 51604268） 江苏省自然科学基金项目BK20140210 江苏高校优势学科建设工程资助项目 PAPD 万方数据 中图分类号 TD353 学校代码 10290 UDC 622 密 级 公开 中国矿业大学 硕士学位论文 欣源矿综采工作面过走向空巷充填技术研究 Study on Backfill Technique of An Abandoned Roadway along the Mining Direction in A Longwall Face in Xinyuan Coal Mine 作 者 秦征远 导 师 柏建彪 教授 申请学位 工学硕士学位 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 王襄禹、张卫东 二〇一七年五月 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 致致 谢谢 时光荏苒，在矿大三年的研究生学习即将结束，这里美丽的校园、完善的硬 件设施、浓厚的学习氛围都给我留下了深刻的影响，在即将离开的时刻，心中充 满眷恋之情。这篇论文历时半年完成，几易其稿，为我的硕士研究生学习生涯划 上了一个圆满的句号。 首先感谢我的导师柏建彪教授，是他把我领进了矿业科学的殿堂，三年以来 在生活上和学习上都对我无微不至的关心，柏老师渊博的专业知识，精益求精的 工作作风，诲人不倦的高尚师德，严以律己、宽以待人的崇高风范，朴实无华、 平易近人的人格魅力对我影响深远。论文工作是在柏老师的悉心指导下完成的， 从论文的选题到最终完成，他都倾注了大量的时间和精力，同时也对柏建彪教授 在我迷茫困惑之时给予的指导和帮助表示深深的感谢。 感谢王襄禹教授、徐营副教授、陈勇讲师、闫帅讲师在学习以及科研方面给 予的指导帮助，在论文选题到具体思路的敲定中都得到了他们的宝贵意见。 感谢牛钦环硕士、柏桦林硕士在数值模拟过程中给予的指导帮助。 感谢神文龙博士、杨建雄硕士、鲁伟杰硕士、郝胜鹏硕士等同门师兄弟在学 习、生活和现场实践过程中对我的诸多帮助与支持。 感谢舍友牛钦环、刘伟涛、徐敬民在生活中给予的诸多照顾，感谢胡秀坤、 赵兴龙、柏桦林等同窗好友对我的付出与关心。 特别感谢父母二十六年来对我的养育之恩以及在生活上和精神上对我的帮 助与支持，是他们一如既往的支持与鼓励让我顺利完成多年的求学生涯，我唯有 以不懈的奋斗来报答他们的恩情。 感谢各位专家、教授在百忙之中评审本论文，由于作者水平有限，文中难免 有不足和疏漏之处，热切希望得到您们的批评指正。 秦征远 2017 年 5 月于徐州 万方数据 I 摘摘 要要 本文以欣源矿 30101 综采工作面过走向空巷为工程背景，采用理论分析、力 学推导、数值模拟和现场实测相结合的综合研究方法，研究了综采工作面遇走向 空巷采用充填的可行性，并在 30101 工作面通过 3205 回风巷空巷时采用高水材 料充填空巷，达到了预期的效果。主要研究成果如下 （1）分析了空巷围岩的应力分布规律，得到了走向空巷跨度是影响空巷稳 定的主要因素。对于跨度较大的空巷，需要减小空巷的等效跨度；分析得到工作 面过空巷的四种破坏类型漏垮破坏、离层破坏、剪切破坏、变形破坏； （2）采用高水材料充填过空巷，充填体与破碎围岩形成胶结整体结构，充 填体支护阻力与煤体共同支撑顶板，为安全过空巷提供了技术途径； （3）若巷道顶板未离层，在超前支承应力作用阶段，充填体对顶板提供支 撑作用，确保工作面过空巷时顶板不发生离层；若巷道已经离层破坏，充填体充 满整个巷道空间，阻止顶板发生进一步破坏与垮落； （4）研究得到充填体强度与巷道围岩变形的关系，确定了合理的充填体强 度为 1MPa，并确定高水材料的水灰比为 81； （5）在欣源矿 30101 工作面进行工业性试验，高水材料充填体有效支撑顶 板，保证了工作面正常回采，表明空巷充填取得了成功。 该论文有图 41 幅，表 4 个，参考文献 75 篇。 关键词关键词走向空巷；综采工作面；高水材料；充填体强度 万方数据 II Abstract This article focuses on the way to pass through the abandoned roadway technology in Xinyuan Coal Mine 30101 working face at Anji Mining Group, by the comprehensive research of used theory analysis, mechanical analysis, numerical simulation and site measurement etc. Exploring the feasibility of filling with high water material when the working face pass through the abandoned roadway, and putting it into use when 30101 working face Pass through the 3205 abandoned roadway. Finally achieved the desired results. Main findings are as follows 1 Based on the stress analysis to abandoned roadway, finding that span is the key to influence roadway stability and roadway span decreases to equivalent for the large span roadway. Through the analysis of the four types Leakage failure, separation failure, shear failure, deation failure of damage in gob roof, finding that the roadway will be more prone to the above four types of damage when the working face near the abandoned roadway. It is necessary to support the gob of abandoned roadway. 2 Based on the analysis to traditional way to pass the abandoned roadway, finding that there are some limitations when use the traditional way to pass through the abandoned roadway. The filling body and broken rock will ed the overall structure of the cemen when filling the roadway with high water material. Filling body and the coal body will support the roof, at the same time reducing the equivalent span of the abandoned roadway. Depend on the contrasting to different filling materials costs, finding that that the material with high water filling is the most economical way. 3 Mechanism of filling body act on the roof in abandoned roadway the filling body can provide support and to ensure that the roof abscission layer do not occur when the roof separation doesnt occurred. Due to the filling body full of roadway space, the roof doesn’t have caving space and it will not cave, when the roof separation has occurred. 4 Numerical simulation software FLAC3D is used to calculate the support parameters, select the strength of 1 MPa as the best solution, and determine the water cement ratio is 81. 5 Industrial test is conducted in 30101 working face, filling body produced a significant supporting role, gob although the small deation, but did not affect the 万方数据 III normal mining. It proved that the results of the study are verified. There are 41 figures, 4 tables and 75 references in this dissertation. Keywords Abandoned roadway have the same trend with the working face; Fully-mechanized face; High-water material; Filling body strength 万方数据 IV 目目 录录 摘摘 要要............................................................................................................................ I 目目 录录......................................................................................................................... IV 图清单图清单...................................................................................................................... VIII 表清单表清单......................................................................................................................... XI 变量注释表变量注释表 ............................................................................................................... XII 1 绪论绪论............................................................................................................................ 1 1.1 课题的提出及研究意义 ......................................................................................... 1 1.2 国内外研究现状 ..................................................................................................... 2 1.3 论文研究的主要内容、方法、技术路线 ............................................................. 8 2 试验工作面生产地质条件分析试验工作面生产地质条件分析 ............................................................................. 10 2.1 30101 综采工作面生产地质条件 ......................................................................... 10 2.2 30101 工作面空巷概况分析 ................................................................................. 11 3 走向空巷顶板变形走向空巷顶板变形破坏破坏机理机理分析分析 ......................................................................... 13 3.1 巷道失稳机理分析 ............................................................................................... 13 3.2 空巷顶板破坏规律分析 ....................................................................................... 16 3.3 空巷围岩稳定性分析 ............................................................................................ 21 3.4 充填过空巷技术 .................................................................................................... 30 3.5 本章小结 ................................................................................................................ 35 4 工作面过空巷期间充填体作用机理及工作面过空巷期间充填体作用机理及参数确定参数确定 ................................................. 37 4.1 充填体作用机理分析 ........................................................................................... 37 4.2 充填体强度的确定 ................................................................................................ 39 4.3 高水材料充填参数的确定 .................................................................................... 46 4.4 本章小结 ................................................................................................................ 46 5 工业性试验工业性试验 ............................................................................................................. 48 5.1 空巷充填方案 ........................................................................................................ 48 5.2 矿压观测 ................................................................................................................ 50 5.3 本章小结 ................................................................................................................ 55 6 结论结论.......................................................................................................................... 57 万方数据 V 参考文献参考文献 ..................................................................................................................... 58 作者简历作者简历 ..................................................................................................................... 62 学位论文原创性声明学位论文原创性声明 ................................................................................................. 63 学位论文数据集学位论文数据集 ......................................................................................................... 64 万方数据 VI Contents Abstract ........................................................................................................................ II Contents ..................................................................................................................... VI List of Figures ......................................................................................................... VIII List of Tables .............................................................................................................. XI List of Variables ........................................................................................................ XII 1 Introduction ............................................................................................................... 1 1.1 Introduction of Topics and Research Significance .................................................. 1 1.2 The Research Status at Home and Abroad ............................................................... 2 1.3 Research Contents、s and Technology Roadmap ....................................... 8 2 General Situation of the Engineering .................................................................... 10 2.1 General Situation of the Mine ................................................................................ 10 2.2 General Situation of the 30101 Fully- Mechanized Face ...................................... 10 2.3 General Situation of the Abandoned Roadway in 30101 Fully-Mechanized Face ...................................................................................................................................... 11 3 Analysis of Damage Law to the Moving Abandoned Roadway Roof ................. 13 3.1 Damage Law Analysis of the Roadway ................................................................. 13 3.2 Analysis of Damage Law to the Abandoned Roadway Roof ................................. 16 3.3 Abandoned Roadway Stability Analysis ................................................................ 21 3.4 The Way of Filling Abandoned Roadway technology ........................................... 30 3.5 Brief Summary ....................................................................................................... 35 4 Analysis of The Filling Body Action Mechanism When Forking Face Through Abandoned Roadway and Filling Parameter Determination ................................ 37 4.1 The Way of Filling effect on the Abandoned Roadway ......................................... 37 4.2 Determine the Filling Body Strength ..................................................................... 39 4.3 Determine the Parameter of The High Water Material .......................................... 46 4.4 Brief Summary ....................................................................................................... 46 5 Industrial Test .......................................................................................................... 48 5.1 Backfill Scheme of An Abandoned Roadway ........................................................ 48 5.2 Pressure Observation ............................................................................................. 50 万方数据 VII 5.3 Brief Summary ....................................................................................................... 55 6 Conclusions .............................................................................................................. 57 References ................................................................................................................... 58 Author’s Resume ........................................................................................................ 62 Declaration of Thesis Originality.............................................................................. 63 Thesis Data Collection ............................................................................................... 64 万方数据 VIII 图清单图清单 图序号 图名称 页码 图 1-1 空巷种类 1 Figure 1-1 Type of abandoned roadway 1 图 1-2 技术路线图 9 Figure 1-2 Study route of the subject 9 图 2-1 空巷位置关系图 11 Figure 2-1 General situation of the abandoned roadway 11 图 2-2 空巷支护断面图 12 Figure 2-2 Support condition of the abandoned roadway 12 图 3-1 矩形巷道围岩分析力学模型 14 Figure 3-1 The analysis mechanics model of rectangular roadway surrounding rock 14 图 3-2 平面椭圆到平面单位圆的映射 15 Figure 3-2 The map from plane oval to plane unit circle 15 图 3-3 不同开裂阶段图 17 Figure 3-3 The picture shows different crack stage 17 图 3-4 巷道漏跨破坏过程示意图 18 Figure 3-4 The process picture of the roadway trickling out and falling 18 图 3-5 巷道围岩错动离层 19 Figure 3-5 The surrounding rock of the roadway dislocation and separation 19 图 3-6 顶板剪切破坏 20 Figure 3-6 The roof of the roadway shear instability 20 图 3-7 不同方式巷道变形 21 Figure 3-7 Different deation of the roadway 21 图 3-8 模型边界条件 22 Figure 3-8 Model boundary condition 22 图 3-9 数值模拟模型 22 Figure 3-9 Numerical simulation model 22 图 3-10 距工作面不同距离空巷垂直位移云图 24 Figure 3-10 Vertical displacement image of abandoned roadway different distance from working face 24 图 3-11 工作面距空巷不同距离的塑性区分布 26 万方数据 IX Figure 3-11 The plastic zone distribution when the working face is different distance from the abandoned roadway 26 图 3-12 距工作面不同距离空巷垂直位移云图 28 Figure 3-12 Vertical displacement image of abandoned roadway different distance from working face 28 图 3-13 距工作面不同距离空巷垂直位移云图 29 Figure 3-13 Vertical displacement image of abandoned roadway different distance from working face 29 图 3-14 高水材料单轴抗压强度测试 31 Figure 3-14 Experiment about uniaxial compressive strength conduct in laboratory 31 图 3-15 高水材料全应力应变曲线 32 Figure 3-15 Complete stress-strain curve of high water material 32 图 3-16 高水材料充填现场实际图 33 Figure 3-16 Coal mining machine cutting high water material on the scene 33 图 4-1 空巷顶板弯曲下沉力学模型 38 Figure 4-1 Bending and sink mechanical model of roof in the roadway 38 图 4-2 充填体三向受限时各龄期强度随时间变化曲线 40 Figure 4-2 Stren