平煤十二矿矸石充填协同垮落式混合综采面矿压显现规律研究.pdf

江苏特聘教授项目（苏教师201529 号） 江苏省第四期“333 工程”培养资金资助项目（BRA2015311） 中国矿业大学重大项目培育工程专项2014ZDPY02 硕士学位论文 平煤十二矿矸石充填协同垮落式混合综采 面矿压显现规律研究 Strata Behavior of the Mixed Mining Working Face of Fully Mechanized Gangue Backfilling Mining and Caving Mining in Pingdingshan No.12 Coal Mine 作 者邰 阳 导 师张吉雄 教授 中国矿业大学 〇二一七年五月 万方数据 中图分类号 TD325 学校代码 10290 UDC 622 密 级 公开 江苏特聘教授项目（苏教师201529 号） 江苏省第四期“333 工程”培养资金资助项目（BRA2015311） 中国矿业大学重大项目培育工程专项2014ZDPY02 中国矿业大学 硕士学位论文 平煤十二矿矸石充填协同垮落式混合综 采面矿压显现规律研究 Strata Behavior of the Mixed Mining Working Face of Fully Mechanized Gangue Backfilling Mining and Caving Mining in Pingdingshan No.12 Coal Mine 作 者 邰 阳 导 师 张吉雄 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 绿色开采 答辩委员会主席 谢文兵 评 阅 人 马立强、张寅 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 致谢致谢 本论文是在 张吉雄 教授的悉心指导下完成的，从论文最初选题到逐步研究直 至最终成稿都离不开张老师的精心指点。 在这里我首先得感谢我的导师张吉雄教授，张吉雄老师无论是从渊博的知识、 精益求精的治学态度还是严谨的工作作风， 都让我感触颇深， 始终是我学习的楷模。 同时也感谢预答辩评委老师的修改意见，其中包括李学华教授、姚强岭教授、 杨真教授，严红副教授等，由衷感谢他们为本论文完成提供的宝贵意见。 论文的顺利完成离不开课题组师兄弟的帮助， 在此感谢巨峰老师、 黄艳利老师、 周楠博士后、张强博士后在论文论文选题及整体构思方面给予的指导；感谢韩晓乐 硕士在论文翻译方面，韩晓乐硕士精湛的英语技能，卓越的人格品质，深厚的学术 素养，敏捷的创新思维，谨慎的工作态度给我留下了深刻的印象；感谢兰立信硕士 在论文理论方面的帮助，兰立信硕士严谨的学术素质，深厚的力学功底，朴实的生 活态度， 优越的计算技能是我学习的榜样； 感谢钟思见硕士在论文校稿方面的帮助。 衷心感谢学校和矿业工程学院领导及老师们几年来在学习和生活上给予的我的 关心、鼓励和帮助。 感谢我的室友，陪我度过本科、研究生生涯，同学七年，感情无以言表，在此 谢过。 感谢我的父母及兄长在学习期间给予的关心和支持，使我能安心的投入学习和 本次论文的写作中。 感谢本论文所引用文献的作者，是他们的研究成果为我开阔了眼见和思路。 感谢所有帮助和关心我的人。 感谢在百忙之中评审、答辩本论文并提出宝贵意见的各位专家教授。 万方数据 I 摘摘 要要 本文以平煤十二矿的矸石充填协同垮落式混合综采工作面的开采技术为背景， 在分析其系统布置、工作面关键设备选型配套、充填与采煤工艺的基础上，通过相 似模拟与数值模拟手段研究了矸石充填协同垮落式混合综采工作面矿压显现规律， 取得以下成果 （1）基于相似模拟实验，揭示了混采面垮落段、矸石充填段以及过渡段的裂隙 发育与岩层移动规律，得出垮落段覆岩移动表现为“三带”规律，而矸石充填段覆 岩以裂隙带和弯曲下沉带为主，垮落带发育相对较弱，且随矸石充填段长度与垮落 段长度之比减小而裂隙带高度增加，顶板活动明显增加，矿压显现明显。 （2）揭示了混采面推进长度和矸石充填段长度对混采面覆岩垂直应力影响规 律，得出覆岩垂直应力主要集中在采空区边界及工作面过渡段处，且随着工作面的 推进和矸石充填段的减小逐渐增加， 同时垮落段覆岩垂直应力明显小于矸石充填段。 （3） 探讨了混采面推进长度和矸石充填段长度对顶板下沉形式以及过渡段长度 的影响规律，得出混采面垮落段采空区覆岩移动明显大于矸石充填段，且顶板下沉 总体呈现“瓢型”分布，同时其最大下沉处偏离混采面中心位置，且位置随着工作面 推进保持不变，但下沉量随矸石充填段长度的增加而增加。对于混采面过渡段长度 而言，其随着混采面推进及矸石充填段长度的减小而增加，并最终趋于稳定，具体 变化范围为 6.2m13.5 m，若对应于 1.5 m 宽度的液压支架为 49 架。 （4）依据平煤十二矿己15-31010 矸石充填协同垮落式混合综采工作面工程实 践，基于过渡段随混采面推进长度的变化规律，同时考虑过渡段瓦斯积聚、液压支 架支护强度给出了过渡段液压支架个数，并分析了垮落段、矸石充填段和过渡段的 液压支架支撑阻力大小及分布规律，确定了混采面以上三段的初次来压及周期来压 步距，给出了矸石充填段和垮落段的煤体支承应力随混采面推进的变化规律，并印 证了混采面矸石充填段与垮落段的覆岩垂直应力特征。 本文有图 47 幅，表 9 个，参考文献 98 篇 关键词关键词固体充填采煤；传统综采；混采；矸石充填段长度；过渡段；矿压显 现 万方数据 II Abstract This paper takes the mixed mining working face of gangue backfilling mining and caving mining in Pingdingshan No.12 coal mine as the engineering background. Based on its production system layout, the key equipment selection of the working face, and the backfilling mining technique, this paper studied the strata behavior of the mixed mining working face of gangue backfilling mining and caving mining through physical simulation and numerical simulation, the main achievements are as follows 1 Based on the physical simulation experiment, the strata behaviors in the caving section, gangue backfilling section and the transition section have been revealed. The strata in the caving section shows caving belt, fissures belt and bending subsidence belt. The gangue backfilling section mainly shows the fissure belt and bending subsidence belt, while the caving section is not obvious and height of the caving section increases as the ratio of gangue backfilling section length and caving section length decreases. Also the roof movement will be more obvious as the ratio decreases. 2 It shows that how the advancing distance of the mixed mining working face and the gangue backfilling section length influence the vertical stress. The stress in the layers over the caving section is obviously smaller than that in the gangue backfilling section. And the stress is mainly concentrate on the boundary of the gob and the transition part of the working face. The stress will increase as the working face advances and the gangue backfilling section decreases. 3 It discusses how the advancing distance of the mixed mining working face and the length of the gangue backfilling section influence the sinking and the length of the transition section. The following results are obtained. In the gob, the strata behavior in caving section is more obvious than the gangue backfilling section and the sinking shape is like the spoon. And different from the traditional working face, the maximum subsidence point is offset to the middle points of the mixed mining working face. With the advancing distance increasing, the position of the maximum subsidence show in a line and the maximum value is increasing with length of the gangue backfilling section. For the length of the transition section in the mixed mining working face, it increases as mixed mining face advances and increases while the gangue backfilling section decreases and finally tends to be stable. The transition section length varies in the range of 6.2m13.5m, if the hydraulic support is 1.5m in width, it will be within the range of 49 supports. 万方数据 III 4 According to the engineering practice of the Ji15-31010 mixed mining working face of the Mixed Mining of Fully Mechanized Gangue Backfilling Mining and Caving Mining in PingdingshanNo.12 coal mine and the characteristics of the transition section, this paper gives the number of the hydraulic supports in the transition section based on the methane concentration and supports strengths. Then the resistances and distributions of the hydraulic supports in caving section, gangue backfilling section and transition are analyzed to determine the first weighting and periodic weighting distances in three sections above. Finally, how the bearing force in coal body of the gangue backfilling section and the caving section vary with the advancing distance is stated, which proves the vertical stress characteristics in gangue backfilling section and caving section. There are 49 figures, 9 tables and 105 references in this paper Key words solid backfilling mining; traditional fully mechanized mining; mixed mining; length of the backfilling section; transition section; strata behavior 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 研究背景与意义 ................................................................................................................. 1 1.2 国内外研究现状综述 ......................................................................................................... 2 1.3 主要研究内容与方法 ......................................................................................................... 8 1.4 主要研究成果 ..................................................................................................................... 9 2 矸石充填协同垮落式混合综采工作面采煤方法矸石充填协同垮落式混合综采工作面采煤方法 .............................................................. 10 2.1 混采面基本原理 ............................................................................................................... 10 2.2 混采面关键装备选型与设计 ........................................................................................... 13 2.3 混采面充填与采煤工艺设计 ........................................................................................... 19 2.4 本章小结 ........................................................................................................................... 20 3 混采面顶板破断移动规律分析混采面顶板破断移动规律分析 .......................................................................................... 22 3.1 混采面物理模型建立与开挖 ........................................................................................... 22 3.2 混采作面覆岩运移及裂隙发育特征 ............................................................................... 24 3.3 混采面过渡段覆岩裂隙发育特征 ................................................................................... 29 3.4 本章小结 ........................................................................................................................... 30 4 不同影响因素下混采面矿压显现规律分析不同影响因素下混采面矿压显现规律分析 ...................................................................... 31 4.1 数值分析模型及方案 ....................................................................................................... 31 4.2 混采面推进过程中矿压显现规律分析 ........................................................................... 35 4.3 不同矸石充填段长度下混采面矿压显现规律分析 ....................................................... 41 4.4 本章小结 ........................................................................................................................... 47 5 工程实践工程实践 .............................................................................................................................. 49 5.1 工程概况 ........................................................................................................................... 49 5.2 己15-31010混采面生产系统布置 ................................................................................... 49 万方数据 V 5.3 己15-31010混采面采场矿压实测分析 ........................................................................... 53 5.4 本章小结 ........................................................................................................................... 59 6 研究结论研究结论 .............................................................................................................................. 61 参考文献参考文献 .................................................................................................................................. 62 作者简历作者简历 .................................................................................................................................. 68 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 VI Content Abstract .................................................................................................................................... II Content ................................................................................................................................... VI List of Pictures .................................................................................................................... VIII List of Tables .......................................................................................................................... XI List of Variables .................................................................................................................... XII 1 Introduction ........................................................................................................................... 1 1.1 Research Background and Significance ............................................................................... 1 1.2 Overseas and Domestic Literature Review .......................................................................... 2 1.3 Main Research Contents and s ................................................................................. 8 1.4 Main Research Achievements .............................................................................................. 9 2 The Mixed Coal Mining of Fully Mechanized Gangue Backfilling Mining and Traditional Caving Mining............................................................................... 10 2.1 The Basic Principle of the Mixed Coal Mining .................................................... 10 2.2 Key Equipment Type Selection and Design in the Mixed Mining Working Face ............. 13 2.3 The Design of Backfilling and Mining in the Mixed Mining Working Face ........ 19 2.4 Chapter Summary ............................................................................................................... 20 3 The Analysis of Strata Movement and Mining Pressure Characteristics of the Mixed Mining Working Face ................................................................................................. 22 3.1 The Establishment and Excavation of the Physical Simulation Model of the Mixed Mining Working Face ............................................................................................................................ 22 3.2 The Overlying Strata Movement and Fissures Development Characteristics in the Mixed Mining Working Face ............................................................................................................... 24 3.3 The Fisssures Development Characteristics in the Transition Part of the Mixed Mining Face 29 3.4 Chapter Summary ............................................................................................................... 30 4 The Numerical Simulation of Strata Movement and Mining Pressure Characteristics of the Mixed Mining Working Face under Different Influence Factors ..................................................................................................................................... 31 4.1 Numerical Analysis Model and Scheme ............................................................................. 31 4.2 Strata Berhavior Analysis of the Mixed Mining Workng Face during the Advancing Process ... 35 4.3 Strata Behavior of the Mixed Mining Working Face under Lengths of Differernt Gangue Backfilling Sections .................................................................................................................. 41 万方数据 VII 4.4 Chapter Summary ............................................................................................................... 47 5 Engineering Application ..................................................................................................... 49 5.1 The Summary of Engineering Application ...