布沼坝露天矿西帮煤炭资源回收方案研究.pdf

工程硕士专业学位论文 布沼坝露天矿西帮煤炭资源回收方案 研究 Study on the Recovery Plan of Coal Resources in the Western Slope of Buzhaoba Open-pit Mine 作 者尹正文 导 师才庆祥 教授 中国矿业大学 2019 年 5 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 密 级 公开 中国矿业大学 应用型硕士学位论文 布沼坝露天矿西帮煤炭资源回收方案研究 Study on the Recovery Plan of Coal Resources in the Western Slope of Buzhaoba Open-pit Mine 作 者 尹正文 导 师 才庆祥 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 露天开采 答辩委员会主席 舒继森 评 阅 人 盲审 二○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， 这将对作者以后的学 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开采与边坡工程研究所各位 老师的热情帮助和大力支持，在此向才庆祥教授、尚涛教授、车兆学教授、舒继 森教授、 李克民教授、 姬长生教授、 彭洪阁副教授和陈树召讲师表示衷心的感谢 在论文的编写过程中得到了韩流讲师、 时旭阳博士、 陆翔博士、 栾博钰博士、 敖忠晨硕士、曹寿鹤硕士、王识辉硕士等人的帮助。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 感谢在参考文献中列出的以及没有列出的所有给予我启发的研究成果的作 者 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 尹正文 2019 年 5 月 万方数据 I 摘摘 要要 近年来，随着云南省“桥头堡战略” 、 “西电东送” 、 “云电外送”等工程的实 施，导致电煤需求大幅增加。小龙潭矿务局为满足电煤用户需求，加速五期扩建 步伐， 提出了增大煤炭产量的决策。布沼坝露天矿西帮煤炭资源受其原生地层条 件及气候特点等影响，开采回收一直是一个技术性难题。为了积极响应上层提高 煤炭产量的决策， 本文依托现有技术对西帮煤炭资源回收方案进行了研究。通过 综合应用露天采矿学、矿山岩石力学、数值模拟和现场试验等方法，对西帮边坡 稳定性进行了综合评价，分析了西帮煤炭资源回收的可行性。并在此基础上，进 行了西帮煤炭资源回收境界优化、回收进度计划及开采工艺系统布置方案研究。 取得的主要成果如下 （1）分别采用Slope和Sigma两种数值模拟软件，对西帮的4个原始剖面清方 前后进行了稳定性分析，得出两种方法分析的稳定系数基本一致，对比验证了数 值模拟的正确性，同时表明了清方减载可在一定程度上提高边坡稳定性。 （2）基于目前开采现状，确定了西帮矿产资源回收方案，明确了边坡变形 失稳机理及诱导失稳的内在因素，系统研究了采剥工程和边坡稳定的耦合机理， 揭示了西帮不同年产量时的稳定性变化规律。 （3）将回收方案划分为了近期和中长期两个阶段并进行了综合评价，分析 得出近期资源回收方案的剥离量为2.59Mm，采出原煤22.19Mt；中长期资源回 收方案的剥离量为0.32Mm， 采出原煤17.13Mt。 整个方案资源回收原煤39.32Mt， 剥采比为0.07，可创造经济效益17.52亿元。 （4）结合稳定性分析，论证了西帮煤炭资源方案的可行性，进行了西北角 边坡稳定性和西部资源回收耦合效应综合评价， 以及西帮资源回收对西北角边坡 稳定性的综合评价。 该论文有图44幅，表27个，参考文献90篇。 关键词关键词露天矿；压煤；资源回收；边坡稳定 万方数据 II Abstract In recent years, with the implementation of “Bridgehead Strategy“, “West-to-East Power Transfer“ and “Cloud Power Transfer“ projects in Yunnan Province, the demand for electricity and coal has increased substantially. Xiaolongtan Mining Bureau, in order to meet the needs of electricity and coal users and accelerate the pace of expansion in the fifth phase, has put forward the decision to increase coal output. The coal resources in the Western slope of Buzhaoba Open-pit Mine are affected by its primary stratum conditions and climatic characteristics, so mining and recovery has always been a technical problem. In order to respond positively to the decision of the upper stratum to increase coal output, this paper relies on the existing technology to study the way of coal resource recovery in Western slope. Through comprehensive application of open- pit mining, rock mechanics, numerical simulation and field test, the stability of Western slope is uated comprehensively, and the feasibility of coal resource recovery in Western slope is analyzed. On this basis, the optimization of Western slope coal resource recovery realm, recovery schedule and layout of mining process system are studied. The main achievements are as follows 1 Two numerical simulation software Slope and Sigma are used to analyze the stability of four original sections in the Western slope before and after clearing. The results show that the stability coefficients of the two s are basically the same, and the validity of the numerical simulation is verified by comparison. At the same time, it shows that the clearing load reduction can improve the slope stability to a certain extent. 2 Based on the current situation of mining, the recovery scheme of mineral resources in Western slope is determined, the mechanism of slope deation and instability and the internal factors inducing slope instability are clarified, the coupling mechanism of mining and slope stability is systematically studied, and the stability variation law of Western slope in different annual output is revealed. 3 The recovery scheme is divided into two stages short-term and medium-term and long-term, and the comprehensive uation is carried out. The results show that the stripping amount of the recent resource recovery scheme is 2.59Mm and the raw coal is 22.19Mt; the stripping amount of the medium-term and long-term resource recovery scheme is 0.32M and the raw coal is 17.13Mt. The whole scheme recovers 万方数据 III 39.32 Mt of raw coal with a stripping ratio of 0.07, which can create economic benefits of 268 million yuan. 4 Combining with stability analysis, the feasibility of Western slope coal resource scheme is demonstrated, and the comprehensive uation of slope stability and coupling effect of resource recovery in the northwest corner is carried out, as well as the comprehensive uation of slope stability in the northwest corner by resource recovery in the Western slope. The paper has 44 pictures, 27 tables, and 90 references. Key words open-pit mine; coal pressing; resources recovery; slope stability 万方数据 IV 目 录 摘摘 要要 .................................................................................................................... I I 目目 录录 .................................................................................................................. I IV V 图清单图清单 ................................................................................................................VIIVIII I 表清单表清单 ................................................................................................................ X XI II I 变量注释表变量注释表 ........................................................................................................ XIXIV V 1 1 绪论绪论 ...................................................................................................................... 1 1 1.1 研究背景和意义 ................................................................................................ 1 1.2 国内外研究现状 ................................................................................................ 2 1.3 压煤回收研究 .................................................................................................... 6 1.4 主要研究内容 .................................................................................................... 6 2 西帮边坡稳定性综合评价及资源回收可行性分析西帮边坡稳定性综合评价及资源回收可行性分析 .............................................. 8 2.1 水对边坡稳定性的影响 ..................................................................................... 8 2.2 边坡水位线折减效用分析 ................................................................................ 13 2.3 震动荷载对边坡稳定性的影响 ........................................................................ 14 2.4 西帮稳定性综合评价及资源回收可行性评估 ................................................. 16 2.5 本章小结........................................................................................................... 18 3 开采开采工艺系统布置方案工艺系统布置方案 ...................................................................................... 19 3.1 工艺类型及开采参数 ....................................................................................... 19 3.2 开采现状及资源回收基本思路 ........................................................................ 21 3.3 开拓运输系统 ................................................................................................... 23 3.4 本章小结........................................................................................................... 25 4 西帮煤炭资源回收方案西帮煤炭资源回收方案 ...................................................................................... 26 4.1 西帮资源近期回收方案 ................................................................................... 26 4.2 开采年限........................................................................................................... 35 4.3 两阶段采剥工程总量及残留原煤量计算......................................................... 42 4.4 本章小结........................................................................................................... 47 5 境界资源回收的边坡稳定性分析境界资源回收的边坡稳定性分析 ....................................................................... 48 5.1 五期境界资源回收的边坡稳定性分析 ............................................................ 48 万方数据 V 5.2 西帮资源回收过程中采场下部煤层灭火及清理建议 ..................................... 52 5.3 西北角边坡稳定性与西部资源回收耦合效应综合评价 ................................. 54 5.4 本章小结........................................................................................................... 59 6 结论结论 ..................................................................................................................... 61 参考文献参考文献 ................................................................................................................ 62 作者简历作者简历 ................................................................................................................ 67 万方数据 VI ContentsContents Abstract .................................................................................................................. Ⅱ Contents .............................................................................................................. VIV List of Figures ..................................................................................................... VIII List of Tables .........................................................................................................XII Variable Annotation Table ................................................................................. XIV 1 Introduction .......................................................................................................... 1 1.1 Research Background and Significance ............................................................... 1 1.2 Research Status at Home and Aboard................................................................... 2 1.3 Main Research Contents ...................................................................................... 6 1.4 Research and Technique Routes .............................................................. 6 2 Comprehensive uation of Stability of Western Slope and Feasibility Analysis of Resource Recovery .............................................................................................. 8 2.1 Effect of Water on Slope Stability ........................................................................ 8 2.2 Analysis of the Utility of Slope Water Level Reduction...................................... 13 2.3 Influence of Vibration Load on Slope Stability .................................................. 14 2.4 Comprehensive uation of Stability of Western Slope and Feasibility Assessment of Resource Recovery .......................................................................... 16 2.5 Chapter Summary .............................................................................................. 18 3 Mining Process System Layout Plan .................................................................. 19 3.1 Process Type and Mining Parameters ................................................................. 19 3.2 Mining Status and Basic Ideas for Resource Recovery ....................................... 21 3.3 Develop Transportation System ......................................................................... 23 3.4 Chapter Summary .............................................................................................. 25 4 Western Slope Coal Resource Recovery Program............................................. 26 4.1 Western Slope Resources Recent Recycling Program ......................................... 26 4.2 Resource Recovery Scheme of Western Slope after Dismantling of Crushing Station ................................................................................................................................ 35 4.3 Calculation of Total Amount of Two-Stage Stripping Project and Residual Raw Coal 万方数据 VII ................................................................................................................................ 42 4.4 Chapter Summary .............................................................................................. 47 5 Slope Stability Analysis of Realm Resource Recovery ...................................... 48 5.1 Slope Stability Analysis of the Recovery of Resources in the Fifth Period ......... 48 5.2 Suggestions on Fire Prevention and Cleaning of Coal Seams in the Lower Part of the Stoppage in the Process of Recycling Western Slope Resources ......................... 52 5.3 Comprehensive uation of Coupling Effect between Stability of Northwest Slope and Western Resource Recovery .................................................................... 54 5.4 Chapter Summary .............................................................................................. 59 6 Conclusion .......................................................................................................... 61 References .............................................................................................................. 62 Author Resume ...................................................................................................... 67 万方数据 VIII 图清单图清单 图序号 图名称 页码 图 1-1 安家岭露天煤矿靠帮开采示意图 3 Figure 1-1 Schematic diagram of the mining of Anjialing Open-pit Coal Mine 3 图 1-2 技术路线图 7 Figure 1-2 Technical roadmap 7 图 2-1 342-342’原始边坡含水稳定性分析 8 Figure2-1 Analysis of water cut stability of 342-342 original slope 8 图 2-2 342-342’清方边坡含水稳定性分析 8 Figure2-2 Analysis of water cut stability of 342-342’ end slope cleaning 8 图 2-3 342-342’开采到五期境界边坡含水稳定性分析 9 Figure2-3 Analysis of water-stable stability of 342-342 mining to the five-stage boundary slope 9 图 2-4 344-344’原始边坡含水稳定性分析 9 Figure2-4 Analysis of water stability of 344-344 original slope 9 图 2-5 344-344’清方边坡含水稳定性分析 9 Figure2-5 Analysis of water cut stability of 344-344’ end slope cleaning 9 图 2-6 344-344’开采到五期境界边坡含水稳定性分析 10 Figure2-6 Analysis of water stability of 344-344 mining to the five-stage boundary slope 10 图 2-7 346-346’原始边坡含水稳定性分析 10 Figure2-7 Analysis of water stability of original slope of 46-346 10 图 2-8 346-346’清方边坡含水稳定性分析 11 Figure2-8 Analysis of water cut stability of 346-346 end slope cleaning 11 图 2-9 346-346’开采到五期境界边坡含水稳定性分析 11 Figure2-9 Analysis of water-stable stability of 346-346 mining to the five-stage boundary slope 11 图 2-10 348-348’原始边坡含水稳定性分析 12 Figure2-10 Analysis of water stability of 348-348 original slope 12 图 2-11 348-348’清方边坡含水稳定性分析 12 Figure2-11 Analysis of water