唐家会煤矿61101工作面水害防治分析研究.pdf

分 类 号TD823 密级公开 单位代码10878 学号20143301005 硕 士 学 位 论 文硕 士 学 位 论 文 论文题目论文题目唐家会煤矿唐家会煤矿 61101 工作面水害防治工作面水害防治 分析研究分析研究 学科门类学科门类工学硕士工学硕士 学科专业学科专业岩土工程岩土工程 研究方向研究方向地下工程地下工程 作者姓名作者姓名万里建万里建 导师姓名导师姓名宣以琼宣以琼 完成时间完成时间2017.03 万方数据 唐唐 家家 会会 煤煤 矿矿 61101 工 作 面工 作 面 水 害水 害 防 治防 治 分 析 研 究分 析 研 究 Analysis and Research of Water Disaster Prevention for 61101 Place in Tangjiahui 学科门类学科门类工学硕士 学科专业学科专业岩土工程 研究方向研究方向地下工程 作者姓名作者姓名万里建 导师姓名导师姓名宣以琼 完成时间完成时间2017.03 万方数据 安徽建筑大学硕士学位论文摘要 I 万方数据 安徽建筑大学硕士学位论文摘要 II 万方数据 安徽建筑大学硕士学位论文摘要 III 摘摘要要 煤炭是我国现代化经济建设最重要的能源之一， 在我国经济建设占据着重要 的地位。而煤矿水害一直是威胁煤矿安全生产的重要原因之一，而承压水上采煤 导致的水害占整个矿井水害一半以上。唐家会煤矿主采煤层为 6 煤，61101 工作 面为矿井首采工作面，工作面开采面临顶板砂岩水、底板奥灰水、断层裂隙水及 废弃巷道采空区积水综合作用下回采安全问题。 而对水害分析研究的技术尚不完 善，因此，对唐家会 61101 工作面防治水分析研究及安全性评价是很有必要的。 本文以唐家会煤矿 61101 工作面作为水害防治研究的工程背景， 分析了煤层 采动底板破坏及水害防治方法， 并且作了安全性评价。 研究内容取得如下成果在 1、通过对 61101 工作面水文地质条件的勘察，以及钻探资料的分析，并且 进行了物探与钻探探查方法设计，作了进一步分析研究。获得了奥灰含水层的富 水性特征，底板岩层的阻隔水性能力、厚度及裂隙变化，还有工作面构造发育形 态等情况。 2、以唐家会煤矿 DF11 断层周边开采为工程背景，构建了工程地质模型， 并对突水危险性流固耦合模拟研究。通过对不同落差（5m、10m、15m、和 20m 以及不同推进距离（30m、90m、120m、150m、210m采用模拟软件 FLAC3D对 DF11 不同倾角断层、不同破碎带宽度断层等影响因素进行分析，研究开采过程 中覆岩应力变化特征、 覆岩破坏规律以及断层的活化、 渗流特征。 模拟结果表明 （1）随着工作面离断层的距离越来越近，覆岩所受的剪应力和垂向应力逐渐 增大，但含水层水压相对稳定，变化较小。 （2）随着断层倾角的增大，覆岩中所受到的垂向应力越来越大，而随着断层 倾角的增大，覆岩所受的剪应力反而越来越小；断层带内所受的正应力随着工作 面的推进逐渐增大， 同时随着断层倾角的增大逐渐增大； 断层界面的垂向位移 随 着断层倾角增大而增大，在距离不变的情况下，工作面推进至断层时，同一标高 处上盘界面的滑移量大于下盘界面的滑移量；在距离相同时，煤柱及底板的塑性 破坏范围是随着断层倾角减小而增大，可以得出在其他情况相同条件下，覆岩煤 柱顶及底板孔隙中的压力是随着断层倾角减小而增大，在距离不变的情况下，工 作面推进至断层，地下水流的流速会逐渐增大，也就是说留设的煤柱宽度是随着 渗水危险性增大而增大的。 （3）在距离不变的情况下，覆岩中的剪应力和覆岩中的垂向应力以及断层 万方数据 安徽建筑大学硕士学位论文摘要 IV 中受到的正应力都是随着破碎带宽度增大而增大； 断层中上盘界面的滑移量受破 碎宽度带作用越大，与之越大。上盘界面的滑移量大于下盘界面的滑移量，其影 响范围及程度也会增大；可以得出在其他情况相同条件下，覆岩煤柱顶及底板孔 隙中的压力是随着断层倾角减小而增大，在距离不变的情况下，工作面推进至断 层， 地下水流的流速会逐渐增大，也就是说留设的煤柱宽度是随着渗水危险性增 大而增大的。 3、进行了 61101 首采工作面安全回采水害影响因素分析，利用导水裂隙带 经验公式、突水系数公式分别对带压开采时顶板砂岩水、底板奥灰水危险性程度 进行了初步评价，计算结果如下 （1）导水裂隙带高度 Hf为 227m，所以 4 煤顶板砂岩及 6 煤顶板砂岩含水层 是首采面顶板充水含水层； （2）突水系数 Ts在 0.0263～0.0318 MPa/m，小于临界突水系数 0.06 MPa/m， 所以在底板隔水层完整的情况下，奥灰水突水的可能性很小。 4、进行了工作面涌水量、矿井涌水量预计，并结合周边矿井防治水经验， 确定了矿井排水能力，为矿井水害防治提供了方法和对策。论文的研究成果，可 为唐家会煤矿首采工作面实现安全生产提供了技术支撑。 图图[74] ；； 表表[14]；；参参[69] 关键词关键词防治水水害防治数值模拟经验公式安全性评价 分类号分类号TD823 万方数据 安徽建筑大学硕士学位论文Abstract III Abstract Coal is one of the most important energy sources in Chinas modern economic construction, occupying an important position in Chinas economic construction. Coal mine water damage has always been one of the important reasons for threatening coal mine safety production, and the water pollution caused by coal mining water pollution accounted for more than half of the mine water damage. The main mining face of Tangjiahui coal mine is 6 coal, 61101 working face is the first working face of the mine, and the mining face is faced with the safety problem of the roof sandstone water, the floor of the Austrian gray water, the fault fissure water and the abandoned roadway.The technology of water damage analysis is not perfect. Therefore, it is necessary to study and analyze the water analysis and safety uation of the 61101 working face of Tangjiahui. In this paper, 61101 working face of Tangjiahui coal mine is used as the engineering background of water pollution prevention and control, and the of harnessing and controlling water damage of coal mining floor is analyzed and the safety uation is made. The research results are as follows 1. Through the 61101 working face of hydrogeological conditions of exploration, as well as drilling data analysis, and carried out geophysical and drilling exploration design, made a further analysis. This gives us a deep understanding of the water-rich features of the Ordovician aquifer, the water barrier capacity, the thickness and the fissure of the bottom plate, and the structural development of the working surface. 2.Based on the engineering background of DF11 fault in Tangjiahui coal mine, this paper constructs the engineering geological model and studies the hydrodynamic coupling of seepage risk. 5m, 10m, 15m, and 20m and different propulsion distances 30m, 90m, 120m, 150m, 210m were analyzed by simulation software FLAC3D for influencing factors such as DF11 different tipping faults and different fracture zone faults, The characteristics of overburden stress change, the law of overburden failure and the activation and seepage characteristics of fault. The simulation software FLAC3D provides the numerical simulation basis for the mining of 61101 working 万方数据 安徽建筑大学硕士学位论文Abstract IV face in Tangjiahui coal mine, and also has the guiding significance for the mining and construction of the mine. The simulation results show that 1 As the distance between the working face and the fault is getting closer, the shear stress and the vertical stress of the overburden are gradually increased, but the water pressure of the aquifer is constant. 2 With the increase of the dip angle, the vertical stress in the overburden is getting bigger and bigger, and the shear stress of the overburden is getting smaller and smaller with the increase of the dip angle. The normal stress increases with the advance of the working face, and increases with the increase of the dip angle. The vertical displacement of the fault interface increases with the increase of the dip angle, and when the distance is constant The slippage of the interface at the same elevation is larger than that of the lower interface. When the distance is the same, the plastic damage range of the coal pillar and the bottom plate decreases with the decrease of the dip angle of the fault. Large, it can be concluded that under other conditions, the pressure in the pores of the coal pillar and the bottom plate increases with the inclination of the fault. When the distance is constant, the working surface is advanced to the fault, the groundwater flow The flow rate will gradually increase, that is to say, the width of the coal pillar is increased with the increase of the risk of water seepage. 3 In the case of constant distance, the shear stress in the overburden and the vertical stress in the overburden and the normal stress in the fault are increased as the width of the fracture zone increases. The amount of slip by the broken width of the role of the larger, with the greater. The sliding range of the upper disk interface is larger than that of the lower plate interface, and the influence range and extent will increase. It can be concluded that the pressure in the pillar and the bottom plate of the overburden are in the same condition The inclination of the fault increases and increases, and when the distance is constant, the working surface is pushed to the fault, and the flow rate of the groundwater flow will gradually increase, that is, the width of the coal pillar is increased with the increase of the risk of seepage big. 3.Based on the empirical analysis of the influencing factors of safety and recovery of 61101 working face, the empirical ula and the water inrush coefficient ula are used to analyze the risk of sandstone water and floor ash Preliminary uation, the results are as follows 1 The height of Hf is 227m, so 4 coal roof sandstone and 6 coal roof sandstone 万方数据 安徽建筑大学硕士学位论文Abstract V aquifer is the first surface of the roof water-filled aquifer; 2 The water inrush coefficient Ts is 0.0263 0.0318 MPa / m, which is less than the critical water inrush coefficient of 0.06 MPa / m. Therefore, the possibility of water inrush is very small. 4. This article on the face of water, mine water and combined with the surrounding mine prevention and control of water experience, to prevent water pollution prevention and control provides a and countermeasures. This paper analyzes and uates the water safety uation of 61101 working face in Tangjiahui Mine, and provides reference and experience for realizing mine safety production. Figure[74] ;table[14];reference[69] Key wordscontrol water ;water pollution control ;numerical simulation; empirical ula;safety uation Chinese books catalogTD823 万方数据 安徽建筑大学硕士学位论文目录 VI 目目录录 摘要...........................................................................................................................II Abstract........................................................................................................................ III 插图清单...................................................................................................................VIII 表格清单......................................................................................................................IX 第一章绪论..........................................................................................................1 1.1 研究的目的及意义...........................................................................................1 1.2 国内外矿井水害现状及发展趋势...................................................................1 1.2.1 国外水害现状及发展趋势.....................................................................1 1.2.2 国内水害现状及发展趋势.....................................................................2 1.3 论文的主要内容...............................................................................................5 1.4 研究方法...........................................................................................................6 1.5技术路线........................................................................................................6 第二章地质及水文地质条件..............................................................................8 2.1 概况..................................................................................................................8 2.1.1 矿井概况.................................................................................................8 2.1.2 工作面基本情况...................................................................................11 2.2 地质条件.........................................................................................................11 2.2.1 地层.......................................................................................................12 2.2.2 区域构造...............................................................................................13 2.2.3 煤层.......................................................................................................15 2.3 水文地质条件.................................................................................................16 2.3.1 含水层..................................................................................................17 2.3.2 隔水层..................................................................................................18 2.3.3 地下水的补给、径流、排泄条件......................................................18 第三章巷道掘进水害因素分析及防探水措施评价..........................................20 3.1 巷道掘进水害因素分析.................................................................................20 3.1.1 顶板砂岩含水层威胁性分析...............................................................20 3.1.2 底板奥灰含水层威胁性分析...............................................................20 3.2 巷道掘进防探水设计.....................................................................................21 3.2.1 物探探测...............................................................................................21 3.2.2 钻探超前探测......................................................................................26 3.3 本章小结.........................................................................................................29 第四章工作面水害探查、治理与评价及排水系统评价......................................30 4.1 顶板水探查与治理........................................................................................30 4.1.1 疏放范围、层位、标准......................................................................30 4.1.2 煤层顶板施工方案...............................................................................30 4.2 底板水探查与治理........................................................................................32 4.2.1 底板奥灰含水层探查工程...................................................................32 4.2.2 底板隔水层探查...................................................................................33 4.2.3 工作面断层探查、注浆加固...............................................................34 万方数据 安徽建筑大学硕士学位论文目录 VII 4.4排水系统评价............................................................................................37 4.4.1 矿井涌水量预计..................................................................................37 4.4.2 矿井排水系统评价...............................................................................37 4.5 本章小结........................................................................................................38 第五章关于 DF11 断层开采的 FLAC3D 数值模拟..........................................40 5.1 关于 FLAC3D 软件介绍...............................................................................40 5.1.1 简介......................................................................................................40 5.1.2 计算步骤..............................................................................................40 5.1.3 优缺点..................................................................................................41 5.2DF11 断层周边开采突水危险性的流固耦合模拟研究............................41 5.3 软件模拟对断层的结果分析.........................................................................42 5.3.1 断层倾角对突水危险性的影响..........................................................42 5.3.2 断层破碎带宽度对断层突水危险性的影响.......................................46 5.4 本章小结.........................................................................................................51 第六章工作面回采水害分析及矿井防治水技术路线........................................52 6.161101 工作面回采水害分析.......................................................................52 6.1.1 顶板砂岩水..........................................................................................52 6. 1.2 底板奥灰水..........................................................................................53 6.1.3 断层水..................................................................................................57 6.2 矿井防治水技术路线.....................................................................................58 6.2.1 顶板水防治方法..................................................................................58 6.2.2 奥灰水防治方法...................................................................................59 6.3 本章小结........................................................................................................61 第七章结论与展望..............................................................................................62 7.1 结论.................................................................................................................62 7.2 展望.................................................................................................................64 参考文献......................................................................................................................65 致谢...........................................................................................................