顾北矿深井巷道群掘进扰动效应及围岩控制对策研究.pdf

硕士学位论文 顾北矿深井巷道群掘进扰动效应 及围岩控制对策研究 Study on Influencing Factors of Excavation Disturbance and Control Strategy for Deep Roadway Group in Gubei Mine 作 者程志超 导 师高明仕 教授 中国矿业大学 二〇一七年五月 国家自然科学基金资助项目（51564004） 江苏省“青蓝工程”资助项目（JSQL20140207） 江苏省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 顾北矿深井巷道群掘进扰动效应 及围岩控制对策研究 Study on Influencing Factors of Excavation Disturbance and Control Strategy for Deep Roadway Group in Gubei Mine 作 者 程志超 导 师 高明仕 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 矿山压力与岩层控制 答辩委员会主席 万志军 评 阅 人 许兴亮 牛建春 二○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 论文审阅认定书论文审阅认定书 研究生 程志超 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 致谢致谢 行文至此，我的毕业论文已基本完成；岁月如梭，三年的研究生时光也行将 结束。离别在即，站在人生的又一个转折点上，心中思绪万千，有成长的喜悦、 有力不从心的遗憾、有离别的不舍和眷恋，而更多的是感恩。 首先，向我的导师高明仕教授致以深深地敬意和衷心的感谢，本论文是在高 明仕教授的悉心指导下完成的，从论文选题、内容撰写、方案设计、工业试验， 都得到了高老师精心指导， 没有高老师的指引和鼓励， 论文不可能得以顺利完成。 师从三载，我收获丰厚、受益匪浅。高老师严谨的治学态度、忘我的工作精神、 乐观自信的生活态度给我留下了深刻的印象，也树起了我学习的标杆，将会一直 鞭策我不断进步。 感谢赵一超、刘昂、李森等师兄，你们是我做人、做事的榜样，你们给予我 的帮助和鼓励我将永远铭于心。 感谢权修才、刘士杰、刘亚明、贾博宁硕士，是你们的同门之谊、兄弟之情 陪我度过了美好的研究生时光。 感谢论文引用参考文献的作者，通过阅读你们的文献，使我增长了知识，开 阔了视野，启发了写作思路。 特别感谢我的父母，感谢你们含辛茹苦将我养大成人，感谢你们对我默默的 奉献和付出，感谢你们对我的鼓励和包容，你们是我多年求学路上的坚强后盾， 你们对我无私的爱是我不断前进的动力。 最后，感谢论文评审和答辩的各位教授、专家，期望得到更多的指导 万方数据 I 摘摘 要要 巷道掘进是煤炭开采的先行工序， 并因其工程量大及工期长而在煤矿生产中 占有重要的地位。随着矿井开采规模和强度的增大，单一巷道已经难以保障矿井 安全生产的需要，因此两条、三条乃至多条的巷道群开拓部署方式已越发普遍。 在深部开采条件下，后掘巷道对先掘巷道掘进扰动影响较大，且巷道的维护问题 越来越突出。 因此进行深井巷道群掘进扰动效应影响因素及围岩控制对策方面的 研究具有重要的现实意义。 本文以顾北矿近距离上山巷道群为工程背景，通过对深井单一、相邻两巷道 围岩应力力学机理分析，巷道群掘进扰动影响的数值模拟分析，在既有巷道支护 结构受临近巷道掘进扰动的现场实测分析的基础上， 研究了 6 煤胶带机上山的围 岩控制对策。主要研究结果如下 1）针对深井单一、相邻巷道开挖扰动对围岩应力分布特征进行了理论推导 和分析，阐述了巷道间的掘进扰动效应，并给出相邻巷道合理间距的经验计算公 式。 2）随着巷道间距的增加，后掘巷道对先掘巷道的扰动影响逐渐减弱。在均 匀应力场下，两相邻巷道间距相同时，水平距离和垂直距离对掘进扰动效应的影 响程度近似相同。 3）掘进顺序对巷道群整体的应力分布影响较小，但对同一条巷道来说，掘 进顺序不同，巷道围岩变形量亦不相同，先掘巷道围岩变形量较大。在巷道群实 际施工过程中，应按照巷道对围岩变形量的要求来确定巷道间的掘进顺序。 4）综掘法施工时，后掘巷道对先掘巷道的扰动影响较小；当采用钻爆法施 工时，在巷道围岩内产生动应力，增加了先掘巷道失稳的可能性。数值分析结果 表明，钻爆法施工对先掘巷道迎爆测帮部和顶板的影响较为显著，且围岩变形量 呈现波浪式增长。 5）在 6 煤底板专用回风巷掘进过程中，通过对胶带机上山和底板回风上山 的掘进扰动程度进行现场实测分析，得出胶带机上山受其影响较大。根据其受掘 进扰动的情况，并参照现有支护方案下巷道的实际变形情况，设计采用“架棚 走向锚索梁喷浆深孔注浆”支护形式对巷道进行加固。试验段巷道矿压观测 结果表明，支护方案有效的控制了巷道围岩变形，满足了矿井安全生产的要求。 该论文有图 45 幅，表 9 个，参考文献 71 篇。 关键词关键词深井巷道群；扰动效应；空间位置；掘进顺序；掘进方式；围岩控制 万方数据 II Abstract As the anterior operation of coal mining, roadway excavation occupies an important position in coal production for large quantities and long construction period. With the increase of mine production scale and intensity, single roadway has been difficult to satisfy the needs of the mine safety production, so the development of roadway group of two, three or even more has been increasingly popular. In deep mining, the excavation disturbance is larger and roadway maintenance problem is more serious. Therefore, studying on the influencing factors of excavation disturbance and control strategy for deep roadway group has extremely important realistic meaning. Based on the short-distance upward roadway group of Gubei mine of Huainan in this dissertation. Through the analysis of stress distribution in single roadway and twin-parallel roadways, research on the influencing factors of excavation disturbance in deep roadway group, and combined with the field monitoring for the support deations of existing rock tunnel subjected to near tunnel excavating, Study the surrounding rock control countermeasures, the author of paper put forward surrounding rock control countermeasures of belt conveyor rise in strata of 6. The main researching work and results are as follows 1） Analyzing the stress distribution in single roadway and twin-parallel roadways, expounding excavation disturbance and giving the calculating ula of reasonable distance between neighboring roadways. 2） With the increase of spacing of roadways, the disturbance influence could then weaken. Under the uni stress field, the distance of two adjacent roadways is same, the disturbance influence of horizontal distance and vertical distance is the same. 3）Excavation sequence on the group of the whole stress distribution is affected, but for the same roadway, deation of surrounding rock of roadway will be different when excavation sequence is different, first dig large distortion of roadway surrounding rock is larger. In the excavation of roadway groups, Excavation sequence should be in accordance with the requirements of the deation of surrounding rock of roadway. 4）After comprehensive tunneling construction, digging roadway less disturbance on the first dig tunnel; When using in construction of drilling and blasting , to produce dynamic stress in the surrounding rock of roadway, increase the 万方数据 III possibility of a first digging roadway instability. Numerical analysis results show that the drilling and blasting of digging tunnel face blasting test first help and the influence of the roof is significant, and wave grows to the deation of surrounding rock. 5）In the excavation process of return air lane, in return air base of tape on the mountain and up the hill excavation disturbance degree field measurement analysis, greatly influenced by the adhesive tape on the mountain. According to the situation by excavation disturbance, and with reference to the existing support scheme under the actual situation of the roadway deation. Test section of roadway mine pressure observation results show that the support scheme effectively control the deation of roadway surrounding rock, meet the requirements of the mine safety production. This thesis data includes 45 figures, 9 tables and 71 references. Keywords deep roadway group; excavation disturbance; horizontal distance; vertical distance; excavation sequence; construction ; surrounding rock control 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 研究背景及意义 ................................................................................................ 1 1.2 国内外研究现状 ................................................................................................ 3 1.3 研究内容及技术路线 ........................................................................................ 9 2 深井巷道应力分布特征及相互扰动效应深井巷道应力分布特征及相互扰动效应 ...........................................................12 2.1 深井单一巷道围岩应力分布特征 ....................................................................12 2.2 深井两相邻平行巷道围岩应力分布规律.........................................................18 2.3 深井两相邻平行巷道最小间距的确定 ............................................................20 2.4 本章小结...........................................................................................................22 3 深井巷道群掘进扰动效应影响因素研究深井巷道群掘进扰动效应影响因素研究 ...........................................................23 3.1 巷道空间位置对扰动效应的影响 ....................................................................23 3.2 巷道掘进顺序对扰动效应的影响 ....................................................................27 3.3 巷道施工方式对掘进扰动的影响 ....................................................................34 3.4 本章小结...........................................................................................................39 4 顾北矿深井巷道群掘进扰动影响的实测分析顾北矿深井巷道群掘进扰动影响的实测分析 ...................................................41 4.1 工程概况...........................................................................................................41 4.2 巷道监测方案 ...................................................................................................43 4.3 监测结果分析 ...................................................................................................45 4.4 本章小结...........................................................................................................48 5 顾北矿深井巷道围岩控制顾北矿深井巷道围岩控制技术技术研究研究 ...................................................................49 5.1 6 煤胶带机上山支护方式评价 ..........................................................................49 5.2 U 型钢支护结构失稳原因分析 .........................................................................51 万方数据 V 5.3 6 煤胶带机上山加固方案设计 ..........................................................................54 5.4 巷道加固效果 ...................................................................................................57 5.5 本章小结...........................................................................................................59 6 结论结论 .....................................................................................................................60 参考文献参考文献 .................................................................................................................62 作者简历作者简历 .................................................................................................................67 学位论文原创性声明学位论文原创性声明 ..............................................................................................68 学位论文数据集学位论文数据集 ......................................................................................................69 万方数据 VI Contents Abstract .................................................................................................................. II Contents ................................................................................................................. VI List of Figures ..................................................................................................... VIII List of Tables .......................................................................................................... XI Variable Annotation Tables .................................................................................. XII 1 Introduction .......................................................................................................... 1 1.1 Research Background and Significance ............................................................... 1 1.2 Research Status at Home and Abroad................................................................... 3 1.3 Research Content and Technical Route ................................................................ 9 2 The Stress Distribution and Excavation Disturbance in Deep Roadway ..........12 2.1 The Characteristic of Stress Distribution in Deep Single Roadway......................12 2.2 The Stress of Surrounding Rock in Deep Twin-Parallel Roadways ......................18 2.3 The Reasonable Distance of Deep Twin-Parallel Roadways ................................20 2.4 Brief Summary ...................................................................................................22 3 Research on Influencing Factors of Excavation Disturbance in Deep Roadway Group ......................................................................................................................23 3.1 The Influence of Roadway Spatial Position on Disturbed Effects ........................23 3.2 The Influence of Roadway Excavation Sequence on Disturbed Effects ...............27 3.3 The Influence of Roadway Construction on Disturbed Effects ...............34 3.4 Brief Summary ...................................................................................................39 4 Analysis on Site Monitoring of Deep Roadway Group under Disturbed Effects in Gubei Mine .........................................................................................................41 4.1 Project Overview ................................................................................................41 4.2 Monitoring Arrangement of Roadway .................................................................43 4.3 Analysis of Monitoring Results ...........................................................................45 4.4 Brief Summary ...................................................................................................48 5 Study of the Surrounding Rock Control Countermeasures of Deep Roadway in Gubei Mine .............................................................................................................49 万方数据 VII 5.1 uate of Supporting in Belt Conveyor Rise in Strata of 6 .............................49 5.2 Analysis of the Causes for Structural instability of U-steel Support .....................51 5.3 Reinforcement Scheme Design of Belt Conveyor Rise in Strata of 6 .................54 5.4 Effect of Roadway Control .................................................................................57 5.5 Brief Summary ...................................................................................................59 6 Conclusions ..........................................................................................................60 References ...............................................................................................................62 Author’s Resume ....................................................................................................67 Declaration of thesis originality .............................................................................68 Thesis Data Collection ............................................................................................69 万方数据 VIII 图清单图清单 List of Figures 图序号 图名称 页码 图 1-1 巷道布置平剖面图 2 Figure 1-1 Sectional plan of roadway layout 2 图 1-2 研究路线图 11 Figure 1-2 Research route map 11 图 2-1 主应力状态下单一巷道围岩受力模型 12 Figure 2-1 Mechanical model of single roadway under principal stress 12 图 2-2 单一巷道围岩应力分布 17 Figure 2-2 The stress of surrounding rock in single roadway 17 图 2-3 相邻平行巷道围岩受力模型 18 Figure 2-3 Mechanical model of twin-parallel Roadways 18 图 2-4 相邻两平行巷道受掘进扰动的应力分布 19 Figure 2-4 The stress distribution by excav