预掘复合顶板大垂高巷道围岩控制技术.pdf

硕士学位论文 预掘复合顶板大垂高巷道围岩控制技术 Surrounding Rock Control Technology of Large Vertical High Roadway with Pre-dug Composite Roof 作 者郭记伟 导 师张吉雄 教授 中国矿业大学 二○一四年五月 万方数据 中图分类号 TD353 学校代码 10290 UDC 622 密 级 公开 教育部新世纪优秀人才支持计划教育部新世纪优秀人才支持计划（（NCETNCET- -1111- -07280728）） 中央高校基本科研业务费专向资金资助中央高校基本科研业务费专向资金资助（（2012DXS022012DXS02）） 中央高校基本科研业务费专向资金资助中央高校基本科研业务费专向资金资助（（20112011ZDP05ZDP05）） 中国矿业大学 硕士学位论文 预掘复合顶板大垂高巷道围岩控制技术 Surrounding Rock Control Technology of Large Vertical High Roadway with Pre-dug Composite Roof 作 者 郭 记 伟 导 师 张 吉 雄 申请学位 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 采动岩体控制 答辩委员会主席 牟宗龙 评 阅 人 马立强 张寅 二○一四年五月 万方数据 61 学位论文原创性声明学位论文原创性声明 本人郑重声明所呈交的学位论文预掘复合顶板大垂高巷道围岩控制技预掘复合顶板大垂高巷道围岩控制技 术术 ，是本人在导师指导下，在中国矿业大学攻读学位期间进行的研究工作所取 得的成果。据我所知，除文中已经标明引用的内容外，本论文不包含任何其他个 人或集体已经发表或撰写过的研究成果。对本论文的研究做出贡献的个人和集 体， 均已在文中以明确方式标明。 本人完全意识到本声明的法律结果由本人承担。 学位论文作者签名 年 月 日 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 论文审阅认定书论文审阅认定书 研究生 郭记伟 在规定的学习年限内， 按照研究生培养方案的 要求，完成了研究生课程的学习，成绩合格；在我的指导下完成本学 位论文,经审阅，论文中的观点、数据、表述和结构为我所认同，论 文撰写格式符合学校的相关规定， 同意将本论文作为学位申请论文送 专家评审。 导师签字 年 月 日 万方数据 致致 谢谢 本论文是在张吉雄教授的悉心指导下完成的。张吉雄教授的指导、鼓励及资 金上的大力支持确保了本论文的顺利完成。 张吉雄老师精益求精的治学态度、严谨的工作作风，忘我的工作精神，给学 生树立起潜移默化的典范作用，这也是导师传授给学生最宝贵的财富，让学生受 益匪浅。值此毕业之际，谨向我的导师致以最真挚的敬意。 感谢严红老师、黄艳利老师、巨峰老师对论文布局结构的建议；感谢黄鹏、 孙强硕士在有限元分析方面， 王东升硕士、 刘世伟硕士、 方坤硕士、 李伟康硕士、 王思贵硕士、张祚竟硕士在理论推导方面给予的支持和帮助。 衷心感谢矿业工程学院领导和老师们多年来在学习和生活上给予的关心、 鼓 励和帮助。 感谢本论文所引用文献的作者。感谢所有帮助和关心我的人。 最后，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。 万方数据 I 摘摘 要要 翟镇煤矿煤岩复合顶板巷道采用锚带网索联合支护效果不理想， 支护问题严 峻；此类型，一方面，巷道掘进速度慢且顶板翻修率高，长久以来，导致支护成 本高；另一方面，顶板支护安全性较弱，顶板整体大变形，局部顶板冒落等异常 矿压显现显著。论文通过对煤岩复合顶板巷道支护失效分析，提出预掘复合顶板 大垂高巷道围岩控制技术；论文采用理论分析、数值模拟等研究方法，综合确定 了预掘复合顶板大垂高巷道的锚杆、锚索支护参数，并结合巷道断面形状、围岩 应力分布特点，设计了预掘复合顶板大垂高巷道超前液压支架，并在现场进行了 工业性试验，主要成果如下 （1）翟镇煤矿煤岩复合顶板极限强度及各岩层间粘结力低，在受到地压和 采动压力的双重作用下，煤岩复合顶板软弱岩层出现破碎、冒落且围岩的塑性区 不断扩大，造成锚杆锚固段内的岩体逐渐变形、离层，使得锚杆支护阻力逐渐降 低，并且复合顶板软弱岩层本身的松动膨胀也对下位岩层形成较大的垂直载荷， 最终导致锚杆锚索支护失效，巷道顶板出现较大下沉。 （2）翟镇煤矿 3405E 中间巷采用预掘复合顶板大垂高巷道锚带网索支护方 案，综合运用理论分析、数值模拟方法优化设计了锚杆、锚索支护参数。 （3）分析巷道超前应力分布情况，确定了 3405E 上、下工作面合理的超前 支撑距离； 结合大垂高巷道断面形状， 设计八立柱多段顶梁支撑式超前液压支架， 并计算得出支架的支护强度最小值、初撑力及工作阻力。 （4）运用预掘复合顶板大垂高巷道围岩控制方法在 3405E 中间巷进行了工 业性试验，监测结果表明巷道围岩变形量较小，巷道断面满足使用要求。 本论文有图 29 幅，表 14 个，参考文献 61 篇 关键词关键词预掘复合顶板；大垂高巷道；围岩控制；超前液压支架；锚杆支护 万方数据 III AbstractAbstract The effect of bolt-strip-mesh-anchor support in the roadway with composite roof in Zhaizhen coal mine is not fine, what’s more, there are serious problems in this kind of support. From one hand, the speed of excavating is slow, and the rate of roadway roof renovation is high, which leads to a high support cost in the end; On the other hand, the security of roof support is poor, the overall deation of roof is large, part of the roof caves heavily, the abnormal underground pressure behaves significantly. Through analyzing of the failure of the support of roadway with composite roof, the surrounding rock control technology of large vertical high roadway with pre-dug composite roof is put forward in this paper. This paper adopts the s of theoretical analysis and numerical simulation to fix the supporting parameters of bolting and anchor rope in large vertical high roadway with pre-dug composite roof, combined the characteristics of the section of roadway and the surrounding rock stress, the advance hydraulic supporter of large vertical high roadway with pre-dug composite roof is designed, as well as the project application is carried out, the main achievements are as follows 1 The ultimate strength and strata cohesive force of composite roof of Zhaizhen coal mine are low. In the dual role by ground pressure and mining pressure, the coal rock soft roof broken, caved and rock plastic area expanded unceasingly, caused the rock of anchoring section gradually deation, delamination, and the anchor drag gradually reduce. The weak composite roof loose swelling vertical load to the lower strata, eventually led to the failure of bolt and cable anchor support and roadway roof appear larger sink. 2 The middle roadway of 3405E in Zhaizhen coal mine adopted the bolt-strip-mesh-anchor support in large vertical high roadway with pre-dug composite roof, by theoretical analysis and numerical simulation, designs the supporting parameters of bolting and anchor rope. 3 Reasonable advancing support distance within the 3405E working face in Zhaizhen coal mine is made by analyzing. Combining with the cross section of roadway, design the type of eight columns section with the top beam supporting hydraulic supporter in advance, and calculate the of the minimum support strength, setting load and working resistance. 4 Project application of the surrounding rock control technology with large 万方数据 IV vertical high roadway with pre-dug composite roof is adopted in the 3405E middle roadway in Zhaizhen coal mine. Monitoring result shows a small deation in roadway and the section of the roadway meets the requirements. The paper includes 29 figures, 14 tables, 61 reference papers. Key words pre-dug composite roof; large vertical high roadway; surrounding rock control; advance hydraulic supporter; bolt support 万方数据 V 目目 录录 摘摘 要要............................................................................................................................ I I 目目 录录........................................................................................................................... V 图清单图清单......................................................................................................................... IX 表清单表清单......................................................................................................................... XI 变量注释表变量注释表 ............................................................................................................. XIII 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 ...................................................................................................... 2 1.3 主要研究内容与方法 .............................................................................................. 8 1.4 主要研究成果 .......................................................................................................... 9 2 翟镇煤矿煤岩复合顶板巷道支护失效分析翟镇煤矿煤岩复合顶板巷道支护失效分析 .......................................................... 11 2.1 试验巷道支护情况 ................................................................................................ 11 2.2 煤岩复合顶板巷道支护失效分析 ........................................................................ 14 2.3 本章小节 ................................................................................................................ 16 3 预掘复合顶板大垂高巷道锚杆支护设计预掘复合顶板大垂高巷道锚杆支护设计 .............................................................. 17 3.1 预掘复合顶板巷道围岩控制方法 ........................................................................ 17 3.2 锚杆支护设计方法 ................................................................................................ 17 3.3 FLAC3D数值模拟软件 ......................................................................................... 19 3.4 锚杆支护参数数值模拟分析 ................................................................................ 23 3.5 本章小节 ................................................................................................................ 36 4 预掘复合顶板大垂高巷道超前支护预掘复合顶板大垂高巷道超前支护 ...................................................................... 38 4.1 预掘复合顶板大垂高巷道超前支护形式选择 .................................................... 38 4.2 预掘复合顶板大垂高巷道超前支护设计 ............................................................ 39 4.3 本章小结 ................................................................................................................ 46 5 工程应用工程应用 .................................................................................................................. 47 5.1 试验条件及巷道支护参数 .................................................................................... 47 5.2 现场应用效果 ........................................................................................................ 49 5.3 本章小结 ................................................................................................................ 51 6 主要结论与展望主要结论与展望 ...................................................................................................... 53 万方数据 VI 6.1 主要结论 ................................................................................................................ 53 6.2 研究展望 ................................................................................................................ 54 参考文献参考文献 ..................................................................................................................... 55 作者简历作者简历 ..................................................................................................................... 59 学位论文原创性声明学位论文原创性声明 ................................................................................................. 61 学位论文数据集学位论文数据集 ......................................................................................................... 63 万方数据 VII Contents Abstract ...................................................................................................................... III Contents .................................................................................................................... VII List of Figures ............................................................................................................. ⅨⅨ List of Tables ............................................................................................................... XIXI List of Variables ........................................................................................................ XⅢⅢ 1 Introduction ............................................................................................................... 1 1.1 Background and Significance .................................................................................. 1 1.2 Current Research Status at Home and Abroad ......................................................... 2 1.3 Main Research Contents and ...................................................................... 8 1.4 The Main Research Results...................................................................................... 9 2 Analysis on Failure of Entry Support of Composite Roof in Zhaizhen Coal Mine ............................................................................................................................. 11 2.1 Support Situation of Test Entry .............................................................................. 11 2.2 Analysis on Failure of Entry Support of Composite Roof ..................................... 14 2.3 Chapter Summary .................................................................................................. 16 3 Bolt Support Design of Large Vertical High Roadway with Pre-dug Composite Roof ............................................................................................................................. 17 3.1 Surrounding Rock Control of Roadway with Pre-dug Composite Roof .. 17 3.2 Bolt Support Design ................................................................................. 17 3.3 FLAC3D Numerical Simulation Software ............................................................. 19 3.4 Numerical Simulation for Bolt Support Parameters .............................................. 23 3.5 Chapter Summary .................................................................................................. 36 4 Advance Support of Large Vertical High Roadway with Pre-dug Composite Roof ............................................................................................................................. 38 4.1 Selection of the advance support styles of Large Vertical High Roadway with Pre-dug Composite Roof .............................................................................................. 38 4.2 Advance Support Design of Large Vertical High Roadway with Pre-dug Composite Roof ........................................................................................................... 39 4.3 Chapter Summary .................................................................................................. 46 5 Engineering Applications ....................................................................................... 47 5.1 Test Condition and Parameter of Entry Support .................................................... 47 5.2 Field Appliance Effects .......................................................................................... 49 万方数据 VIII 5.3 Chapter Summary .................................................................................................. 51 6 Main Conclusions and Expectation ....................................................................... 53 6.1 Main Conclusions .................................................................................................. 53 6.2 Research Expectation ............................................................................................. 54 References ................................................................................................................... 55 Author’s Resume ........................................................................................................ 59 Declaration of Thesis Originality.............................................................................. 61 Dissertation Date Collection ...................................................................................... 63 万方数据 IX 图清单图清单 图序号 图名称 页码 图 1-1 技术路线 9 Figure 1-1 Technical route for this paper 9 图 2-1 3405E 工作面开采系统布置图 12 Figure 2-1 Mining system layout of 3405E working face 12 图 2-2 原支护方案支护参数布置图 13 Figure 2-2 Layout of previous support system 13 图 2-3 加强支护方案参数布置图 14 Figure 2-3 Layout of reinforce support system 14 图 2-4 原支护方案数值模拟 15 Figure 2-4 Numerical simulation of previous support system 15 图 2-5 无支护方案数值模拟 16 Figure 2-5 Numerical simulation without support 16 图 3-1 莫尔-库仑本构模型曲线 22 Figure 3-1 The curve of mohr-coulomb constitutive model 22 图 3-2 模型边界条件 24 Figure 3-2 Bounda