宝利露天煤矿节地减损开采可行性分析及技术方案研究.pdf

工程硕士专业学位论文 宝利露天煤矿节地减损 开采可行性分析及技术方案研究 Feasibility Analysis and Technical Scheme Study on Land Loss Mining in Baoli Open-pit Coal Mine 作 者刘新新 导 师才庆祥 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 TD824 学校代码 10290 UDC 622.2 密 级 公开 中国矿业大学 工程硕士专业学位论文 宝利露天煤矿节地减损 开采可行性分析及技术方案研究 Feasibility Analysis and Technical Scheme Study on Land Loss Mining in Baoli Open-pit Coal Mine 作 者 刘新新 导 师 才庆祥 教授 申请学位 工程硕士学位 培养单位 矿业工程学院 学科专业 矿业工程 研究方向 露天开采 答辩委员会主席 舒继森 评 阅 人 盲审 二〇一九年五月 万方数据 致谢致谢 在论文的研究和编写过程中， 自始至终都得到了导师才庆祥教授的悉心指导 和亲切关怀。从论文的选题、研究思路、理论分析直到论文的成稿，无不浸透着 导师的心血。导师知识渊博、治学严谨、求真求实、谨慎勤勉的高贵品质以及忘 我的专业奉献精神和对科学的执著追求深深的感染了作者， 这将对我以后的学习 和工作产生深远的影响。值此论文完成之际，特向导师才庆祥教授表示衷心的感 谢和崇高的敬意 作者在完成论文期间， 得到了中国矿业大学露天研究所各位老师的热情帮助 和大力支持，在此向周伟教授、尚涛教授、舒继森教授、彭洪阁副教授和陈树召 老师、丁小华老师和韩流老师表示衷心的感谢 在论文的编写过程中得到了时旭阳、陆翔、栾博钰、赵新佳等师兄弟的大力 帮助。在硕士研究生学习期间，感谢一起陪伴我实验室生活的各位师兄弟，感谢 各位老师给予了我无微不至的关怀和指导，在此一并致以诚挚的谢意 在攻读硕士学位和工作期间，得到了家人的理解、支持和鼓励，在此致以深 深的谢意 感谢在百忙中抽出时间悉心评阅本论文和参与答辩的各位专家 刘新新 2019 年 5 月 万方数据 I 摘摘 要要 论文以宝利露天煤矿为研究对象， 首先对宝利矿现有东端帮的地质资料进行 分析，选择其端帮代表性剖面，对二维边坡的稳定性进行分析，并寻找其极限稳 定状态时所对应的边坡角度，以该角度作为其最大陡帮开采角度。在最大的陡帮 开采角度的基础上，在端帮坡脚处进行压帮内排，并统计分析内排压帮高度与端 帮边坡稳定性之间的关系，以及其对端帮稳定性的积极效果。基于以上的参数， 对宝利露天煤矿东端帮陡帮开采方案进行设计，最终核算矿区经济效益。 通过选用极限平衡法和 FLAC3D 进行了东端帮边坡靠帮陡帮开采稳定性研 究，并对整个东端帮进行了三维模拟，得到了其结果稳定性较好；进行靠帮开采 后，整体边坡稳定性达 1.2 以上，满足要求；一系列分析后得到最大陡帮角度为 49，相较于初设提高了 13；由于东端帮服务期限小于 1 年，陡帮过程中其稳定 性始终在 1.1 以上，满足短期非工作帮的稳定性要求；对内排压帮后的东端帮边 坡进行稳定性分析，得到其稳定系数可提高到 1.2 以上；确定中间搭单桥“L” 型排土的运输系统优化方案，经计算可节省运距 285m，节省运费 345.35 万元； 陡帮过程中， 东端帮边坡角从 36提高到 49， 经计算可以多回收“呆滞煤”6.31 万 t，近期可创造经济价值 899 万元。 宝利露天煤矿的东帮陡帮开采方案不仅仅适用于该采区东帮， 同时也适用于 其他采区的端帮，为后续的靠帮陡帮开采提供了宝贵的经验和技术支持，具有推 广价值和意义。 该论文有图 59 幅，表 15 个，参考文献 74 篇。 关键词关键词露天煤矿；边坡稳定；陡帮开采；压帮内排 万方数据 II Abstract The paper takes Baoli open-pit coal mine as the research object. Firstly, it analyzes the geological data of the existing eastern end of Baoli Mine, selects the representative profile of the end-end, analyzes the stability of the two-dimensional slope, and finds its ultimate stability. The angle of the slope corresponding to the state, with this angle as its maximum steep mining angle. Based on the angle of the largest steep shovel, the inner lining is carried out at the foot of the end shovel, and the relationship between the inner sluice height and the stability of the end slop is statistically analyzed, and the stability of the opposite end is also analyzed. Positive effects. Based on the above parameters, the design of the steep mining plan for the eastern end of Baoli Open-pit Coal Mine is designed, and the economic benefits of the mining area are finally calculated. Through the selection of the limit equilibrium and FLAC3D, the stability study of the eastern side of the slope is used to help the steep mining, and the whole eastern end is simulated in three dimensions. The stability of the results is good. After the mining, the whole The slope stability is above 1.2, which meets the requirements; after a series of analysis, the maximum steep angle is 49, which is 13 higher than the initial setting; since the service life of the eastern end is less than 1 year, it is stable during the steep process. The sex is always above 1.1, which satisfies the stability requirements of short-term non-work gangs; the stability analysis of the eastern end slope after the internal pressure relief is obtained, and the stability coefficient can be increased to 1.2 or more; The transportation system optimization scheme of the type of dumping can save the transportation distance by 285m and save shipping costs of 345,500 yuan;In the process of steep gangs, the angle of the eastern end slope is increased from 36 to 49. After calculation, the “stagnation coal” can be recovered more than 63,100 tons, and the economic value can be created in the near future of 8.99 million yuan. The Dongbang steep-cut mining plan of Baoli Open-pit Coal Mine is not only applicable to the eastern gang of the mining area, but also applicable to the end gangs of other mining areas, providing valuable experience and technical support for the subsequent help of steep mining, with the promotion value and significance. There are 59 figures, 15 tables, and 74 references. Keywords open pit mine; slope stability; steep mining; pressing the inner row 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 研究背景和意义..................................................................................................... 1 1.2 研究现状综述......................................................................................................... 3 1.3 研究内容................................................................................................................. 5 1.4 研究方法与技术路线............................................................................................. 6 1.5 本章小结................................................................................................................. 7 2 宝利露天煤矿宝利露天煤矿初期研究初期研究 ............................................................................................ 8 2.1 位置与交通............................................................................................................. 8 2.2 自然地理................................................................................................................. 8 2.3 地质条件分析......................................................................................................... 8 2.4 岩石力学性质....................................................................................................... 16 2.5 本章小结............................................................................................................... 22 3 东端帮边坡现状稳定性分析东端帮边坡现状稳定性分析 .................................................................................. 23 3.1 评价方法选择....................................................................................................... 23 3.2 分析软件选择....................................................................................................... 27 3.3 端帮边坡稳定性要求........................................................................................... 28 3.4 东端帮现状二维稳定性计算............................................................................... 29 3.5 东端帮现状三维稳定性分析............................................................................... 34 3.6 本章小结............................................................................................................... 35 4 陡帮开采方案陡帮开采方案 ......................................................................................................... 36 4.1 陡帮开采参数确定............................................................................................... 36 4.2 最大陡帮角度确定............................................................................................... 37 4.3 最大陡帮角度稳定性........................................................................................... 38 4.4 陡帮开采具体方案............................................................................................... 40 4.5 本章小结............................................................................................................... 45 万方数据 IV 5 陡帮期间运输系统优化陡帮期间运输系统优化 ......................................................................................... 47 5.1 运输系统优化....................................................................................................... 47 5.2 内排搭桥的基本理论........................................................................................... 51 5.3 搭桥位置选择....................................................................................................... 58 5.4 本章小结............................................................................................................... 61 6 陡帮开采经济效益评价陡帮开采经济效益评价 ......................................................................................... 62 6.1 “呆滞煤”回收效益 ................................................................................................ 62 6.2 中间桥节省运费................................................................................................... 63 6.3 本章小结............................................................................................................... 64 7 结论结论 ......................................................................................................................... 65 参考文献参考文献 ..................................................................................................................... 66 作者简历作者简历 ..................................................................................................................... 71 学位论文原创性声明学位论文原创性声明 ................................................................................................. 72 学位论文数据集学位论文数据集 ......................................................................................................... 73 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 Research Background and Significance ................................................................... 1 1.2 Summary of Research Actuality .............................................................................. 3 1.3 Research Contents .................................................................................................... 5 1.4 Research and Technical Route .................................................................... 6 1.5 Chapter Summary .................................................................................................... 7 2 Initial study of Baoli Open-pit Coal Mine .............................................................. 8 2.1 Location and Traffic ................................................................................................. 8 2.2 Physical geography .................................................................................................. 8 2.3 Geological condition analysis .................................................................................. 8 2.4 Rock mechanics ..................................................................................................... 16 2.5 Chapter Summary .................................................................................................. 22 3 Stability Analysis of the Status of the Eastern End Slope ................................... 23 3.1 uation selection .................................................................................. 23 3.2 Analysis software selection .................................................................................... 27 3.3 End slope stability requirements ............................................................................ 28 3.4 Two-dimensional stability calculation of the current status of the eastern end ..... 29 3.5 Three-dimensional stability analysis of the status quo of the eastern end ............. 34 3.6 Chapter Summary .................................................................................................. 35 4 Steep mining scheme ............................................................................................... 36 4.1 Determination of steep mining parameters ............................................................ 36 4.2 Maximum steep angle determination ..................................................................... 37 4.3 Maximum steep angle stability .............................................................................. 38 4.4 Steep mining specific plan ..................................................................................... 40 4.5 Chapter Summary .................................................................................................. 45 万方数据 VI 5 Transportation system optimization during steep gang ...................................... 47 5.1 Transportation system optimization ....................................................................... 47 5.2 Basic theory of inner bridge ................................................................................... 51 5.3 Bridge position selection........................................................................................ 58 5.4 Chapter Summary .................................................................................................. 61 6 Economic Benefit uation of Steep Mining ..................................................... 62 6.1 “Stagnation coal“ recycling benefit ....................................................................... 62 6.2 Middle bridge saves shipping costs ....................................................................... 63 6.3 Chapter Summary .................................................................................................. 64 7 Conclusion ............................................................................................................... 65 References .................................................................................................................