朱集西煤矿11502轨道巷围岩稳定控制技术及应用研究.pdf

工程硕士学位论文 朱集西煤矿 11502 轨道巷围岩稳定控制技术及 应用研究 Research on Surrounding Rock Stability Control Technology and Application of 11502 Track Roadway in Zhujixi Coal Mine 作 者黄 洋 导 师李学华 教授 中国矿业大学 二〇一九年五月 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 TD3 学校代码 10290 UDC 622 密 级 公开 中国矿业大学 硕士学位论文 朱集西煤矿 11502 轨道巷围岩稳定控制技术及 应用研究 Research on Surrounding Rock Stability Control Technology and Application of 11502 Track Roadway in Zhujixi Coal Mine 作 者 黄洋 导 师 李学华 申请学位工程硕士专业学位 培养单位 矿业工程学院 学科专业 矿业工程 研究方向巷道支护与围岩控制 答辩委员会主席 王旭锋 评 阅 人 盲评 二〇一九年五月 万方数据 致致 谢谢 转眼已过三年，作为一名工程硕士，在这几年的学习与生活中，老师与同学给了我 很大的帮助，我也收获了很多，就采矿行业有了更加坚实的理论基础，再次对在我硕士 期间给予我帮助和支持的老师和同学表示由衷的感谢。 我由衷的感谢我的导师李学华教授。 从论文选题到理论分析， 从数值模拟到论文截 稿，李学华教授都给予了无微的关照和细心的知道，始终为我传道授业解惑，指引着我 前进的方向，没有李学华教授的悉心指导，论文不会进行的这么顺利，在此谨向导师致 以诚挚的感谢 对于朱集西矿生产技术部各位工程师和相关科室技术人员以及一线工作人员表示 由衷的感谢。在向现场检测阶段，生产技术部给予了极大程度上的支持，一线工作人员 也对现场数据监测与收集投入了很大精力与心血， 在现场也给予了我认真的讲解， 为我 论文与现场紧密结合，真正的学以致用，为论文写作提供了坚实的理论基础 感谢各位专家和教授在百忙之中评审本文,衷心期望得到您的指导和帮助。 黄洋 2019.05 万方数据 I 摘摘 要要 我国东部矿区煤炭开采矿井已逐步进入深部开采阶段， 回采巷道围岩变形呈现大变 形、强流变等特征。朱集西矿 11–2 煤回采巷道平均埋深在 1000m 左右，在高地应力及 采动应力影响下， 巷道围岩变形破坏严重， 严重影响了工作面的正常回采工作和矿井的 安全高效开采。因此，优化 11-2 煤回采巷道支护技术参数是朱集西矿当前面临的重要 技术课题。 本文针对朱集西煤矿 11502 轨道巷围岩稳定控制的技术难题，综合采用理论分析、 数值计算、工业性试验等研究方法，现场实测了 11501 运输巷和 11402 轨道巷围岩变形 特征，11–2 煤工作面回采巷道围岩失稳破坏的主要受巷道围岩体强度较低、受本工作 面采动影响强烈、 支护承载性能难以得到充分发挥、 原有锚网支护设计缺乏合理性等多 种因素的影响；数值计算方法研究了锚杆（索）支护关键技术参数，并根据不同支护方 案下锚杆（索）应力分布特征，分析了不同支护方案对巷道围岩体作用效果，提出了 11502 轨道巷围岩控制技术方案。 工业性试验表明现场实测了 11502 轨道巷表面位移、锚杆受力、锚索受力、巷道 深部位移等矿压显现规律， 并对技术方案进行合理性评价及修改， 采用优化后的支护方 案后，巷道围岩变形量得到有效控制，取得了良好的技术经济效果。 该论文有图 54 幅，表 4 个，参考文献 66 篇。 关键词关键词锚网支护；围岩控制；软岩巷道；Flac3D数值模拟 万方数据 II Abstract The coal mining in the eastern mining area of China has gradually entered the deep mining stage, and the surrounding rock deation of the mining roadway presented the characteristics of large deation and strong rheology. The average depth of 11-2 coal mining roadway in Zhujixi Mine is about 1000 meters. Under the influence of high ground stress and mining induced stress, the deation of surrounding rock of the roadway are seriously damaged, which largely affects the normal mining work in working flour and the safe and high-efficient mining of the mine. Therefore, optimizing the technical parameters of 11-2 coal mining roadway suppor is an important technical topic to Zhujixi Coal Mine. Aiming at the technical problems of surrounding rock stability control of 11502 track roadway in Zhujixi Coal Mine, this paper comprehensively uses theoretical analysis, numerical calculation, industrial test and other research s, and had a filed mearsurement on the surrounding surrounding rock denaturation characteristics of 11501 transport roadway and 11402 track roadway,obtained the main influencing factors of surrounding rock instability failure of flour mining roadway in 11-2 coal mine, such as low strength of surrounding rock body of the roadway, strong influence of mining in this working face, difficulty in giving full play to the bearing capacity of support, lack of rationality in the original anchor net support design, etc. The key technical parameters of bolt cable support are studied by numerical calculation. According to the stress distribution characteristics of bolt cable under different support schemes, the effect of different support schemes on surrounding rock mass of roadway.By doing these projects, proposing the surrounding rock control technical scheme of 11502 track roadway. Industrial tests shows that the surface displacement, bolt stress, anchor cable stress, deep displacement and other mine pressure behaviors of 11502 track roadway are measured on site. And the rationality of the technical scheme is uated and modified After the optimized support scheme is adopted, the deation of surrounding rock of roadway is effectively controlled and has achieved good results on technical economy. There are 54 figures, 4 tables and 66 references in this paper. Keywords Bolting-mesh Support; Control of surrounding rock; Soft rock roadway; Flac3D 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 ..................................................................................................................................... XI 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 研究内容及技术路线 ........................................................................................................ 4 2 工程地质特征及巷道支护现状工程地质特征及巷道支护现状 ............................................................................................ 6 2.1 11502 轨道巷工程概况 ...................................................................................................... 6 2.2 11502 轨道巷顶板内部裂隙发展发育规律 ...................................................................... 8 2.3 11502 工作面邻近巷道支护技术方案 .............................................................................. 9 2.4 本章小结 .......................................................................................................................... 12 3 巷道围岩稳定控制性机理巷道围岩稳定控制性机理 .................................................................................................. 13 3.1 巷道围岩变形破坏特征 ................................................................................................... 13 3.2 巷道围岩稳定性影响因素 .............................................................................................. 13 3.3 锚网支护作用机理 .......................................................................................................... 15 3.4 本章小结 .......................................................................................................................... 16 4 11502 轨道巷围岩稳定控制数值计算研究轨道巷围岩稳定控制数值计算研究 ....................................................................... 17 4.1 模型的建立 ...................................................................................................................... 17 4.2 锚杆（索）支护对巷道围岩稳定性的影响 .................................................................. 19 4.3 巷道支护技术参数优化 .................................................................................................. 20 4.4 巷道围岩稳定性控制技术方案的提出 .......................................................................... 27 4.5 本章小结 .......................................................................................................................... 29 5 工业性试验研究工业性试验研究 ................................................................................................................. 31 5.1 11502 轨道巷矿压观测方案 ............................................................................................ 31 5.2 11502 轨道巷矿压显现规律 ............................................................................................ 33 5.3 巷道稳定性评价及分析 .................................................................................................. 45 5.4 本章小结 .......................................................................................................................... 49 6 主要结论主要结论 ............................................................................................................................. 51 万方数据 IV 参参考文献考文献 ................................................................................................................................. 52 作者简历作者简历 ................................................................................................................................. 55 学位论文原创性声明学位论文原创性声明 ............................................................................................................. 56 学位论文数据集学位论文数据集 ..................................................................................................................... 57 万方数据 V Contents Abstract ................................................................................................................................... II Contents ................................................................................................................................... V List of Figures ...................................................................................................................... VII List of Tables .......................................................................................................................... XI List of Variables ................................................................................................................... XII 1 Introduction .......................................................................................................................... 1 1.1 Presentation of Question and Meanings of Study ............................................................... 1 1.2 Research Status at Home and Abroad ................................................................................. 2 1.3 Research Contents and s ......................................................................................... 4 2 Engineering Geological Characteristics and Roadway Support Status .......................... 6 2.1 Engineering Survey of 11502 Track Roadway .................................................................... 6 2.2 Development Law of Internal Cracks in Roof of 11502 Track Roadway ........................... 8 2.3 Technical Scheme of Supporting Adjacent Roadways in 11502 Working Face .................. 9 2.4 Brief Summary .................................................................................................................. 12 3 Stability Control Mechanism of Roadway Surrounding Rock....................................... 13 3.1 Deation and Failure Characteristics of Roadway Surrounding Rock ........................ 13 3.2 Influencing Factors of Roadway Surrounding Rock Stability .......................................... 13 3.3 Mechanism of Bolting-mesh Support................................................................................ 15 3.4 Brief Summary .................................................................................................................. 16 4 Numerical Calculation of Surrounding Rock Stability Control for 11502 Track Roadway ................................................................................................................................. 17 4.1 Establishment of Model..................................................................................................... 17 4.2 Influence of Bolt Cable Support on the Stability of Roadway Surrounding Rock ......... 19 4.3 Optimization of Technical Parameters for Roadway Support ........................................... 20 4.4 Technical Proposal for Stability Control of Roadway Surrounding Rock ........................ 27 4.5 Brief Summary .................................................................................................................. 29 5 Industrial Experimental Research .................................................................................... 31 5.1 Mine Pressure Observation Scheme for 11502 Track Roadway ....................................... 31 5.2 Strata Behavior Law of 11502 Track Roadway................................................................. 33 5.3 Parameter Optimization of Roadway Support................................................................... 45 5.4 Brief Summary .................................................................................................................. 49 6 Main Conclusion ................................................................................................................. 51 万方数据 VI References .............................................................................................................................. 52 Author’s Resume ................................................................................................................... 55 Declaration of Thesis Originality ......................................................................................... 56 Thesis Data Collection........................................................................................................... 57 万方数据 VII 图清单图清单 图序号 图名称 页码 图 1-1 论文技术研究路线图 5 Figure 1-1 Technical roadmap for papers 5 图 2-1 11502 工作面综合柱状图 7 Figure 2-1 Comprehensive histogram of 11502 working face 7 图 2-2 11502 轨道顺槽平面布置图 8 Figure 2-2 Layout plan of 11502 track roadway 8 图 2-3 距孔口 7.04m处 8 Figure 2-3 7.04m from orifice 8 图 2-4 距孔口 6.48m 处 8 Figure 2-4 6.48m from orifice 8 图 2-5 距孔口 5.32m处 9 Figure 2-5 5.32m from orifice 9 图 2-6 距孔口 5.17m 处 9 Figure 2-6 5.17m from orifice 9 图 2-7 距孔口 5.14m处 9 Figure 2-7 5.14m from orifice 9 图 2-8 距孔口 4.15m 处 9 Figure 2-8 4.15m from orifice 9 图 2-9 距孔口 4.03m处 9 Figure 2-9 4.03m from orifice 9 图 2-10 距孔口 3.87m 处 9 Figure 2-10 3.87m from orifice 9 图 2-11 距孔口 2.22m处 9 Figure 2-11 2.22m from orifice 9 图 2-12 距孔口 1.31m 处 9 Figure 2-12 1.31m from orifice 9 图 2-13 距孔口 1.08m处 9 Figure 2-13 1.08m from orifice 9 图 2-14 11501 运输巷 U 型钢棚支护断面图 10 Figure 2-14 Sectional drawing of U-shaped steel shed support for 11501 transportation roadway 10 图 2-15 11501 运输巷锚网梁支护断面图 11 Figure 2-15 Sectional drawing of U-shaped steel shed support for 11501 transportation roadway 11 图 2-16 11402 轨道巷末端试验段支护断面图 12 Figure 2-16 Section view of support of test section at the end of 11402 track gateway 12 万方数据 VIII 图 3-1 U 型钢支架实际和理想结构模型 14 Figure 3-1 Actual and ideal structural model of U-shaped steel bracket 14 图 4-1 数值计算模型 18 Figure 4-1 Numerical calculation model 18 图 4-2 巷道支护方案 19 Figure 4-2 Roadway support scheme 19 图 4-3 水平位移云图 19