覆岩隔离注浆充填回收条带煤柱技术的理论研究.pdf

国家重点研发计划资助项目（2016YFC0501100） 国家自然科学基金项目（51604258） 江苏省自然科学基金项目（BK20150194） 硕士学位论文 覆岩隔离注浆充填回收条带煤柱技术的 理论研究 Theoretical Study on Recovering Strip Coal Pillar with Grouting into Overburden of Isolated Panels 作 者季英明 导 师王晓振 讲师 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 TD325 学校代码 10290 UDC 622 密 级 公开 中国矿业大学 硕士学位论文 覆岩隔离注浆充填回收条带煤柱技术的理论研究 Theoretical Study on Recovering Strip Coal Pillar with Grouting into Overburden of Isolated Panels 作 者 季英明 导 师 王晓振 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 绿色开采 答辩委员会主席 曹胜根 评 阅 人 盲审 二○一八年五月 万方数据 致谢致谢 随着毕业论文的定稿，自己的硕士研究生学习生涯也即将划上句号。一路走 来，有欢笑，也有泪水；有收获，也有成长。追梦的路上，每一次的前进都离不 开那些关心及帮助我的人，在此致以最真挚的谢意。 首先诚挚感谢我的导师王晓振老师。毕业论文从选题、列提纲、写作，一直 到最终的定稿，都离不开王老师的悉心指导。从师的这三年里，大到专业知识框 架， 小到数据处理及论文写作技巧， 王老师均不厌其烦， 悉心传授。 在科研方面， 王老师非常注重潜力的挖掘，提供了很多历练的机会与平台，使我在科研之路上 不断成长。 生活中， 王老师谦恭、 谨慎的待人接物方式也对我产生了深远的影响。 王老师亦师亦友，在此，再次向在学习与生活上给予我极大关怀与帮助的恩师致 以衷心的感谢。 感谢许家林教授在论文选题中给予的指导， 在论文科学问题的提炼及行文方 向把控中的建议。 非常荣幸能进入许老师 “岩层移动与绿色开采” 研究团队学习。 许老师也如同第二导师一般，在生活学习中都给予我莫大的关怀。对此，铭感于 心。 感谢韩红凯、何昌春、王秉龙三位博士师兄在论文写作、数值模拟以及数据 分析中提供的诸多帮助。三位师兄将自己科研学习中的经验悉心传授，使我在毕 业论文写作过程中少走了很多弯路。 同样感谢课题组轩大洋副教授、朱卫兵副教授、鞠金峰副教授、胡国忠副教 授、谢建林副研究员、秦伟副研究员、李竹博士等在论文撰写上给予的指导和建 议。感谢杨静、于胜超、刘文兵、白雪斌、方志远、王利民、杨南、孙超等一众 师弟在模拟实验中给与的莫大帮助，真心感谢他们。 还要深深感谢我的父母及三位姐姐。感谢他们在我 20 年的求学之路上无条 件的信任，及在精神与经济上的支持。感谢他们一路的陪伴与呵护，正是因为有 他们做我坚强的后盾，我才能全身心的投入学习当中去。希望在以后的日子里， 我同样能带着他们的期许，走的更远。 感谢论文所引用文献的作者， 感谢各位评审专家和答辩委员会专家在百忙之 中给予的评审，热切希望得到您们的指导。 最后感谢我的母校中国矿业大学，在矿大的七年里，我收获了良师益友，收 获了至理名言。不悔梦归处，只恨太匆匆 季英明 二〇一八年五月 万方数据 I 摘摘 要要 长期以来，条带开采形成了大量的遗留条带煤柱， 目前常用的井下充填置换 回收条带煤柱的方法存在着采充干扰严重等问题。针对以上问题，本文提出了一 种新的回收条带煤柱的方法覆岩隔离注浆充填回收条带煤柱技术， 即在已有的 条带开采区域内，按照覆岩隔离注浆充填技术原理，采用隔一条回收一条的方式 对遗留的条带煤柱进行回收。 覆岩隔离注浆充填技术已成功在多个矿区的数十个 压煤采区不迁村采煤中得以应用，但将其用于条带煤柱回收还是新的尝试，也缺 乏相关影响因素的研究及工艺流程的设计。为此，论文综合采用理论分析、数值 模拟等方法，开展了覆岩隔离注浆充填回收条带煤柱的技术原理研究。 首先分析了覆岩隔离注浆充填回收条带煤柱技术的可行性。 基于覆岩隔离注 浆充填技术的基本原理，从注浆充填覆岩结构条件、压实区及地表移动变形控制 效果三个方面展开论述，说明覆岩隔离注浆充填技术可用于条带煤柱的回收。 研究了覆岩条件、条带采宽、采动充分程度及采出率等多个因素对覆岩隔离 注浆充填回收条带煤柱的影响。旨在寻找该技术的适用条件，以指导工程实施。 结果表明， 覆岩存在典型厚硬岩层是覆岩隔离注浆充填回收条带煤柱的理想条件； 且在一定范围内， 覆岩隔离注浆充填回收条带煤柱沉陷控制效果随条带采宽及采 出率的提高而变优，随采动充分程度的增加而减弱。并结合工程角度指出，采宽 较大时，覆岩运动速度加快，地表沉陷控制及覆岩隔离注浆充填技术的实施难度 均加大。 在保障地表沉陷控制效果的前提下，相对较小的采宽可同时兼顾沉陷控 制效果与工程实施两个方面， 在覆岩隔离注浆充填回收条带煤柱中的适用性更好。 以山东王楼煤矿为例， 介绍了覆岩隔离注浆充填回收条带煤柱的具体工艺流 程及主要参数的确定方法。 该论文有图 29 幅，表 19 个，参考文献 96 篇。 关键词关键词覆岩隔离注浆充填；条带煤柱；关键层；覆岩结构 万方数据 II Abstract Because of the strip mining , a large number of coal pillars have been left over for a long time. At present, the commonly used of recovering strip coal pillar is underground filling technology , but it disturbs the mining severely. Therefore, this thesis proposes a new . That is recovering strip coal pillars with grouting into overburden of isolated panels ,or isolated grout injectionIGI. According to the principle of IGI, the basic thought of this is to recover one strip coal pillar from the other in the strip mining area. The IGI has been successfully applied in dozens of coal mines for coal mining operation under buildings. However it is still a new attempt to use it for recovering strip coal pillars. It also lacks the research of relevant influencing factors and the design of construction process.With all this in mind, this thesis adopted a comprehensive ology that incorporates theoretical analysis and numerical simulation to study the technology of recovering strip coal pillars with grouting into overburden of isolated panels. Firstly, the feasibility of the was studied. According to the principle of IGI, it was shown that the can be used for the recovery of strip coal pillar from three aspects, that was the overburden structure conditions , the compaction area and the control of surface movement and deation. Aiming at finding the applicable conditions of the to guide the implementation of the project, the effect of overburden conditions, mining width , mining degree and recovery rate on the result of this were studied. Results indicated that typical hard-and-thick strata existing in overburden was the ideal condition for the ; the efficiency in suiface subsidence control increased with the mining width and the recovery rate but decreased with the mining degree within limits. However combining the engineering fact, it pointed out that when the mining width was large, the overburden movement speed was accelerated, and the surface subsidence control and the application of IGI was more difficult. On the premise of guaranteeing the control effect of surface subsidence , the relatively small mining width can simultaneously combine the control effect of the subsidence and the implementation of the project, so the applicability was better. Take Wang Lou coal mine for example, construction process and determination of main parameters of the was introduced. This thesis contains 29 figures,19 tables and 96 references. 万方数据 III Keywords grout into overburden of isolated panels; strip coal pillar; key stratum; overburden structure 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 .......................................................................................................................... X 变量注释表变量注释表 ............................................................................................................... XII 1 绪论绪论 ........................................................................................................................... 1 1.1 问题的提出与研究意义......................................................................................... 1 1.2 国内外研究现状..................................................................................................... 2 1.3 主要研究内容及方法............................................................................................. 7 2 覆岩隔离注浆充填回收条带煤柱的可行性分析覆岩隔离注浆充填回收条带煤柱的可行性分析 ................................................... 9 2.1 条带开采与覆岩隔离注浆充填技术对比分析..................................................... 9 2.2 覆岩隔离注浆充填回收条带煤柱的覆岩条件分析........................................... 12 2.3 覆岩隔离注浆充填回收条带煤柱注浆充填效果分析....................................... 14 2.4 本章小结............................................................................................................... 25 3 覆岩条件对覆岩隔离注浆充填回收条带煤柱效果的影响覆岩条件对覆岩隔离注浆充填回收条带煤柱效果的影响 ................................. 27 3.1 覆岩条件对条带开采及覆岩隔离注浆充填技术的影响................................... 27 3.2 覆岩条件对覆岩隔离注浆充填回收条带煤柱的影响....................................... 28 3.3 不同覆岩条件下覆岩隔离注浆充填回收条带煤柱效果的差异....................... 39 3.4 本章小结............................................................................................................... 41 4 开采参数开采参数对覆岩隔离注浆充填回收条带煤柱效果的影响对覆岩隔离注浆充填回收条带煤柱效果的影响 ................................. 43 4.1 采宽对覆岩隔离注浆充填回收条带煤柱效果的影响....................................... 43 4.2 采动充分程度对覆岩隔离注浆充填回收条带煤柱效果的影响....................... 48 4.3 采出率对覆岩隔离注浆充填回收条带煤柱作用效果的影响........................... 51 4.4 本章小结............................................................................................................... 57 5 覆岩隔离注浆充填回收条带煤柱工艺流程覆岩隔离注浆充填回收条带煤柱工艺流程 ......................................................... 59 5.1 工艺流程............................................................................................................... 59 5.2 王楼煤矿覆岩隔离注浆充填回收条带煤柱方案设计....................................... 61 5.3 本章小结............................................................................................................... 67 6 结论与展望结论与展望 ............................................................................................................. 69 万方数据 V 6.1 研究结论............................................................................................................... 69 6.2 研究展望............................................................................................................... 70 参考文献参考文献 ..................................................................................................................... 71 作者简历作者简历 ..................................................................................................................... 77 学位论文原创性声明学位论文原创性声明 ................................................................................................. 78 学位论文数据集学位论文数据集 ......................................................................................................... 79 万方数据 VI Contents Abstract ........................................................................................................................ II Contents ...................................................................................................................... VI List of Figures .......................................................................................................... VIII List of Tables ............................................................................................................... X List of Variables ....................................................................................................... XII 1 Introduction ............................................................................................................... 1 1.1 Research Background and Significance ................................................................... 1 1.2 Research Status at Home and Abroad ...................................................................... 2 1.3 Research Contents and ology ...................................................................... 7 2 Feasibility Anlysis of Recovering Strip Coal Pillar with Grouting into Overburden of Isolated Panels ................................................................................... 9 2.1 Comparative Analysis of Strip Mining and Grouting into Overburden of Isolated Panels ......................................................................................................................... 9 2.2 Analysis on Strata Conditions of Recovering Strip Coal Pillar with Grouting into Overburden of Isolated Panels ..................................................................................... 12 2.3 Analysis on Effect of Recovering Strip Coal Pillar with Grouting into Overburden of Isolated Panels ......................................................................................................... 14 2.4 Summary ................................................................................................................ 25 3 Effect of Overburden conditions on the result of Recovering Strip Coal Pillar with Grouting into Overburden of Isolated Panels ................................................ 27 3.1 Effect of Overburden conditions on Strip Mining and Grouting into Overburden of Isolated Panels ............................................................................................................. 27 3.2 Effect of Overburden conditions on Recovering Strip Coal Pillar with Grouting into Overburden of Isolated Panels ............................................................................ 28 3.3 Different Effect of Different Overburden conditions on the result of Recovering Strip Coal Pillar with Grouting into Overburden of Isolated Panels ......................... 39 3.4 Summary ................................................................................................................ 41 4 Effect of Mining Parameters on the result of Recovering Strip Coal Pillar with Grouting into Overburden of Isolated Panels ......................................................... 43 万方数据 VII 4.1 Effect of Mining Width on the result of Recovering Strip Coal Pillar with Grouting into Overburden of Isolated Panels .............................................................. 43 4.2 Effect of Mining Degree on the result of Recovering Strip Coal Pillar with Grouting into Overburden of Isolated Panels .............................................................. 48 4.3 Effect of Recovery Rate on the result of Recovering Strip Coal Pillar with Grouting into Overburden of Isolated Panels .............................................................. 51 4.4 Summary ................................................................................................................ 57 5 Construction Process of Recovering Strip Coal Pillar with Grouting into Overburden of Isolated Panels ................................................................................. 59 5.1 Construction Process .............................................................................................. 59 5.2 Scheme of Recovering Strip Coal Pillar with Grouting into Overburden of Isolated Panels in Wang Lou Coal Mine ................................................................................... 61 5.3 Summary .............................................................................................................. 67 6 Conclusions and Prospects ..................................................................................... 69 6.1 Main Conclusions .................................................................................................. 69 6.2 Future Research ..................................................................................................... 70 References ................................................................................................................... 71 Author’s Resume ........................................................................................................ 77 Declaration of Thesis Originality ............................................................................. 78 Thesis Data Collection ............................................................................................... 79 万方数据 VIII 图清单图清单 图序号 图名称 页码 图 1-1 论文研究技术路线 8 Figure 1-1 Technical route of the thesis 8 图 2-1 覆岩隔离注浆充填不迁村采煤技术原理示意图[19] 10 Figure 2-1 Schematic of grout into overburden of isolated panels during longwall mining under populated areas 10 图 2-2 覆岩隔离注浆充