小龙潭矿务局龙桥排土场边坡稳定性研究.pdf

工程硕士专业学位论文 小龙潭矿务局龙桥排土场边坡稳定性研究 Study on Slope Stability of Longqiao Dump of Xiaolongtan Mining Bureau 作 者罗 伟 导 师周 伟 教授 中国矿业大学 万方数据 二○一九年五月 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 工程硕士专业学位论文 小龙潭矿务局龙桥排土场边坡稳定性研究 Study on Slope Stability of Longqiao Dump of Xiaolongtan Mining Bureau 作 者 罗伟 导 师 周伟 申请学位 工程硕士 培养单位 矿业学院 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 论文审阅认定书论文审阅认定书 研究生 罗伟 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 致谢致谢 本毕业论文是在导师周伟的悉心指导下完成的。从论文的选题、研究思路、 理论分析到论文的定稿无不浸透着导师的心血。导师渊博的知识、严谨的求实的 治学态度、谦虚谨慎的高贵品格、忘我的工作热情以及平易近人的作风对我有着 非常深远的影响，激励我不断努力学习和工作，向着更高的人生目标奋斗。研究 生期间，在老师的无私关怀和细心照顾下，我不仅学到了露天采矿方面的专业知 识，而且也懂得了许多生活的道理，值此论文完成之际，特向导师周伟致以最真 诚的祝福和最诚挚的敬意 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， 在此特向才庆祥教授、 尚涛教授、 舒继森教授、 彭洪阁副教授、 陈树召老师、韩流老师、和丁小华老师表示衷心的感谢。研究生期间，得到了中 国矿业大学矿业工程学院和研究生院的领导及老师的支持， 在此一并致以诚挚的 谢意 作者在论文撰写过程中， 得到了实验室常治国博士、 时旭阳博士、 陆翔博士、 杨猛硕士、李新鹏硕士、孟鑫硕士、栾博钰硕士、王靖伟硕士、刘智超硕士、吴 榕真硕士、许砚硕士等师兄弟的支持和帮助；感谢他们长久以来对我的陪伴，为 我营造了良好的学习和科研环境。 感谢在参考文献中列出的以及没有列出的所有 给与我启发的研究成果的作者 感谢小龙潭矿务局的各位领导和同仁，在我论文写作期间，提供了很多相关 的资料和思路，在此向他们表示感谢 感谢我的亲人， 你们是我坚实的后盾， 我的每一点进步都离不开你们的关怀， 支持和鼓励 最后，感谢百忙之中抽出时间给与悉心评阅和指教的诸位专家，祝你们平安 健康快乐。 罗伟 2019 年 5 月 01 日 万方数据 II 摘摘 要要 绝大部分露天煤矿为了缩短运输距离、减少外排占地费用不得不实施内排，来减 少露天煤矿开采与运输成本。近年来，内排土场边坡稳定性问题日渐凸显，内排土场 发生一定规模的变形及滑坡灾害频率也呈逐年上升趋势。为了避免露天煤矿内排土场 发生滑坡，需要优化内排土场边坡形态，减少滑坡风险，使露天煤矿开采更具有安全 性。 近年来，许多专家学者应用不同方法对排土场边坡稳定性展开深入研究。应用极 限平衡法研究了排土场边坡稳定性影响规律。尽管我国相关的专家和学者对内排土场 边坡稳定性进行了大量研究，但对于内排土场边坡角、推进距离对稳定性的影响研究 较少，很多关于排土场的实际工程问题并没有解决。 龙桥排土场主要排弃布沼坝露天矿的表土和泥灰岩等剥离物， 随着矿山建设发展， 龙桥排土场的高度不断增大，其安全稳定成了下部村镇安全的最大威胁。因此，本项 目对龙桥排土场的物理力学参数进行实验测定，并分析获取排土场稳定性分析的基础 数据。 本研究收集了龙桥排土场边坡的基础资料，分析了排土场基底形状、水文、地质 条件，确定了影响边坡稳定性的敏感性因素。根据排土场边坡几何尺寸，以及历史位 移监测资料，并对排土场混合物料力学参数研究结果进行验证、归纳、分析，得到了 龙桥排土场浅表层、中部不同深度位置、基底岩土体的物理力学参数，为龙桥排土场 稳定性评价提供了基础数据。 该论文有图55幅，表20个，参考文献70篇。 关键词关键词露天煤矿；排土场；稳定性评价。 万方数据 III Abstract In order to shorten the distance of transportation and reduce the costs of discharging land, most opencast coal mines have to implement inner discharging to reduce the cost of mining and transportation of opencast coal mines. In recent years, the problem of slope stability in the inner dump has become more and more prominent, and the deation and landslide disaster frequency in the inner dump have been increasing year by year. In order to avoid the landslide in the dump site of open-pit coal mine, it is necessary to optimize the slope of the dump site, reduce the landslide risk and make the open-pit coal mine more safe. In recent years, many experts and scholars have applied different s to study the slope stability. The law of slope stability is studied by limit equilibrium . Although relevant experts and scholars in China have done a lot of research on the stability of internal dump slope, there are few studies on the influence of slope Angle and advance distance on the stability of internal dump slope, and many practical engineering problems of the dump have not been solved. Longqiao dump is mainly used to dump the topsoil and marl and other stripping materials of bozhumba open-pit mine. With the development of mine construction, the height of longqiao dump keeps increasing, and its safety and stability have become the biggest threat to the safety of the lower villages and towns. Therefore, the physical and mechanical parameters of longqiao dump were measured experimentally, and the basic data of stability analysis of the dump were analyzed. This study collected the basic data of the slope of longqiao dump, analyzed the basement shape, hydrologic and geological conditions of the dump, and determined the sensitive factors affecting the slope stability. According to mine slope geometry size, the displacement monitoring data and history, and site of mixed material mechanics parameters for validation, induction, analysis results, different depth of a central site dragon bridge play, location, physical and mechanical parameters of rock mass base, provide basic data for the site for the dragon bridge stability uation. There are55figures, tables20 references70in this thesis. Keywords Open pit coal mines; Mine; Stability uation 万方数据 IV 目目 录录 摘要摘要 ...............................................................................................................................II 目录目录 ............................................................................................................................. IV 图清单图清单 ...................................................................................................................... VIII 表清单表清单 ........................................................................................................................ XII 变量注释表变量注释表 ...............................................................................................................XIV 1 绪论绪论 ............................................................................................................................1 1.1 研究背景和意义 .................................................................................................1 1.2 研究现状综述 .....................................................................................................2 1.3 研究内容 ..............................................................................................................3 1.4 技术依据和路线 .................................................................................................3 2 龙桥排土场工程地质情况龙桥排土场工程地质情况.........................................................................................5 2.1 基底岩土工程地质特征 ......................................................................................5 2.2 排土场边坡地形特征 ..........................................................................................7 2.3 本章小结 ..............................................................................................................8 3 龙桥排土场排弃物空间分布及力学参数确定龙桥排土场排弃物空间分布及力学参数确定......................................................10 3.1 原始物料类别及特征 .......................................................................................10 3.2 排弃物分布规律统计分析 ...............................................................................10 3.3 排弃物含水性及地下水特征 ...........................................................................12 3.4 排弃物密实程度划分及物理力学参数 ...........................................................13 3.5 本章小结 ............................................................................................................16 4 龙桥排土场现状稳定性评价龙桥排土场现状稳定性评价..................................................................................17 4.1 分析剖面的确定 ...............................................................................................17 4.2 分析方法的选择 ...............................................................................................18 4.3 稳定性分析结果对比 .......................................................................................21 4.4 水和震动对排土场边坡稳定性的影响评价 ...................................................24 4.5 龙桥排土场二维稳定性综合评价 ...................................................................30 4.6 本章小结 ............................................................................................................31 5 龙桥排土场三维稳定性评价龙桥排土场三维稳定性评价..................................................................................32 5.1 龙桥排土场三维模型建立 ...............................................................................32 5.2 震动和水影响下龙桥排土场三维稳定性评 ...................................................33 万方数据 V 5.3 龙桥排土场设计最终结构三维稳定性评价 ...................................................35 5.4 本章小结 ............................................................................................................37 6 龙桥排土场基底稳定性评价龙桥排土场基底稳定性评价..................................................................................38 6.1 龙桥排土场基底地形特征 ...............................................................................38 6.2 龙桥排土场基底表层岩性及力学特性 ...........................................................39 6.3 勘探剖面基底稳定性评价 ...............................................................................40 6.4 龙桥排土场基底稳定性综合评价及治理措施 ...............................................45 6.5 本章小结 ............................................................................................................45 7 龙桥排土场结构及排土方案优化龙桥排土场结构及排土方案优化..........................................................................47 7.1 龙桥排土场有效排土容量分析 .......................................................................47 7. 2 排土场容积收缩量核算及剩余土石量排弃方案 ..........................................60 7.3 本章小结 ...........................................................................................................61 8 结论结论 ..........................................................................................................................63 参考文献参考文献 ......................................................................................................................65 基本情况基本情况 ......................................................................................................................69 学术论文学术论文 ......................................................................................................................69 万方数据 VI Contents Abstract ........................................................................................................................II Contents...................................................................................................................... IV List of Figures ......................................................................................................... VIII List of Tables ............................................................................................................. XII List of Variables .......................................................................................................XIV 1 Introduction ...............................................................................................................1 1.1 Research Background and Significance ...............................................................1 1.2 Summary of Research Actuality...........................................................................2 1.3 The Research Content ..........................................................................................3 1.4 Technical Basis and Route ...................................................................................3 2 Engineering Geology of Longqiao Dump................................................................5 2.1 Geotechnical Engineering Geological Characteristics of Basement....................5 2.2 Topographic Features of The Slope of The Dump ...............................................7 2.3 Chapter Summary.................................................................................................8 3 Determination of Spatial Distribution and Mechanical Parameters of Waste Disposal In Longqiao Dump .....................................................................................................10 3.1 Original Material Type and Characteristics........................................................10 3.2 Statistical Analysis of The Distribution Law of Waste Disposal .......................10 3.3 Water-Bearing and Groundwater Characteristics of Waste Disposal ................. 11 3.4 Classification of Discharge Density and Physical and Mechanical Parameters 13 3.5 Chapter Summary...............................................................................................16 4 Stability uation of Longqiao Dump................................................................17 4.1 Determination of The Analytical Profile ............................................................17 4.2 Selection of Analytical s ........................................................................18 4.3 Comparison of Stability Analysis Results ..........................................................21 4.4 uation of The Influence of Water and Vibration On Slope Stability of Dump Site ......................................................................................................................................24 4.5 Comprehensive uation of 2-D Stability of Longqiao Dump.......................30 4.6 Chapter Summary...............................................................................................31 5 uation of Three-Dimensional Stability of Longqiao Dump..........................32 5.1 Establishment of 3D Model of Longqiao Dump ................................................32 万方数据 VII 5.2 Three-Dimensional Stability uation of Longqiao Dump Under The Influence of Vibration and Water......................................................................................................35 5.3 uation of 3D Stability of Longqiao Dump Design ......................................35 5.4 Chapter Summary...............................................................................................37 6 uation of Basement Stability of Longqiao Dump..........................................38 6.1 Topographic Features of Longqiao Dump Basement .........................................38 6.2 Lithology and Mechanical Properties of Basement Surface Layer of Longqiao Dump ......................................................................................................................................39 6.3 uation of Basement Stability of Exploration Profile ...................................40 6.4 Comprehensive uation and Control Measures of Basement Stability of Longqiao Dump ............................................................................................................................45 6.5 Chapter Summary...............................................................................................45 7 Optimization of Longqiao Dump Structure and Soil Disposal Plan...................47 7.1 Analysis of Effective Discharge Capacity of Longqiao Dump ..........................47 7.2 The Calculation of Volume Shrinkage of The Dump and The Disposal Plan of Residual Soil and Rock ................................................................................................60 7.3 Chapter Sum