井亭煤矿复采区开采技术研究.pdf

分类号分类号 TD82TD82密密级级公公开开 U D CU D C 单位代码单位代码1042410424 工工 程程 硕硕 士士 学学 位位 论论 文文 井亭煤矿复采区开采技术研究井亭煤矿复采区开采技术研究井亭煤矿复采区开采技术研究井亭煤矿复采区开采技术研究 王王茂茂军军 申请学位级别申请学位级别 工程硕士工程硕士领域领域名名称称 矿业工程矿业工程 指导教师指导教师姓名姓名 刘刘 伟伟 韬韬职职称称 副副 教教 授授 副副指导教师姓名指导教师姓名 侯侯 庆庆 杰杰职职称称 高级工程师高级工程师 山山 东东 科科 技技 大大 学学 二二○○○○六年十一月六年十一月 论文题目论文题目论文题目论文题目 井亭煤矿复采区开采技术研究井亭煤矿复采区开采技术研究井亭煤矿复采区开采技术研究井亭煤矿复采区开采技术研究 作者姓名作者姓名作者姓名作者姓名王王 茂茂 军军入学时间入学时间入学时间入学时间 2004200420042004 年年 3 3 3 3 月月 领域名称领域名称领域名称领域名称矿业工程矿业工程研究方向研究方向研究方向研究方向采矿方法与工艺采矿方法与工艺 指导教师指导教师指导教师指导教师刘刘 伟伟 韬韬职职职职称称称称副副 教教 授授 副指导教师副指导教师副指导教师副指导教师侯侯 庆庆 杰杰职职职职称称称称高级工程师高级工程师 论文提交日期论文提交日期论文提交日期论文提交日期2006200620062006 年年 10101010 月月 论文答辩日期论文答辩日期论文答辩日期论文答辩日期2006200620062006 年年 11111111 月月 授予学位日期授予学位日期授予学位日期授予学位日期 THETHETHETHE RESEARCHRESEARCHRESEARCHRESEARCH OFOFOFOFMININGMININGMININGMINING OFOFOFOF REPEATEDREPEATEDREPEATEDREPEATEDMININGMININGMININGMINING DISTRICTDISTRICTDISTRICTDISTRICTI I I IN N N N JINGTINGJINGTINGJINGTINGJINGTING COALCOALCOALCOALMINEMINEMINEMINE A A A ADissertationDissertationDissertationDissertationtedtedtedtedininininfulfillmentfulfillmentfulfillmentfulfillment ofofofof thethethetherequirementsrequirementsrequirementsrequirementsofofofof thethethethe degreedegreedegreedegree ofofofof MASTERMASTERMASTERMASTER OFOFOFOFENGINEERINGENGINEERINGENGINEERINGENGINEERING fromfromfromfrom ShandongShandongShandongShandong UniversityUniversityUniversityUniversity ofofofofScienceScienceScienceScience andandandand TechnologyTechnologyTechnologyTechnology b b b by y y y WangWangWangWang MaojunMaojunMaojunMaojun SupervisorSupervisorSupervisorSupervisorA A A AssociatessociatessociatessociateProfessorProfessorProfessorProfessor LiuLiuLiuLiu WeitaoWeitaoWeitaoWeitao CollegeCollegeCollegeCollegeofofofof ResourcesResourcesResourcesResourcesandandandand EnvironmentalEnvironmentalEnvironmentalEnvironmental EngineeringEngineeringEngineeringEngineering NovemberNovemberNovemberNovember2006200620062006 声声明明 本人呈交给山东科技大学的这篇硕士学位论文本人呈交给山东科技大学的这篇硕士学位论文，，除了所列参考文献和世所公认除了所列参考文献和世所公认 的文献外，全部是本人在导师指导下的研究成果。该论文资料尚没有呈交于其它的文献外，全部是本人在导师指导下的研究成果。该论文资料尚没有呈交于其它 任何学术机关作鉴定。任何学术机关作鉴定。 硕士生签名硕士生签名 日日期期 AFFIRMATIONAFFIRMATIONAFFIRMATIONAFFIRMATION I I I I declaredeclaredeclaredeclare thatthatthatthat thisthisthisthis dissertation,dissertation,dissertation,dissertation, tedtedtedted inin in in fulfillmentfulfillmentfulfillmentfulfillment ofofofof thethethethe requirementsrequirementsrequirementsrequirementsforforforfor thethethethe awardawardawardaward ofofofof MasterMasterMasterMaster ofofofof PhilosophyPhilosophyPhilosophyPhilosophy inin in in ShandongShandongShandongShandong UniversityUniversityUniversityUniversity ofofofof ScienceScienceScienceScience andandandand Technology,Technology,Technology,Technology, is is is is whollywhollywhollywholly mymymymy ownownownown workworkworkwork unlessunlessunlessunless referencedreferencedreferencedreferenced ofofofof acknowledge.acknowledge.acknowledge.acknowledge. 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SignatureSignatureSignatureSignature DateDateDateDate 山东科技大学硕士学位论文摘要 摘摘要要 针对井亭煤矿水采区复采过程中存在的开采方法选择、 开采后塌陷对地面建筑的影 响、复采区的通风方式、煤炭自燃、瓦斯治理等方面的问题，本文通过实测沿底煤巷所 揭露的复采区原水采区丢煤情况，根据有关计算确定了首个复采面回采方法、回采工艺 与巷道支护方式等技术问题， 并用相似模拟实验和计算机数字解算技术模拟了复采后地 面沉陷情况。数值模拟方法是通过对结构系统构造数学模型，利用计算机求解大规模的 代数联立方程组来模拟结构系统的反映过程的。 数值方法的突出优点就是能够较好地考 虑诸如介质的各向异性、非均质特性及其随时间的变化、复杂边界条件和介质不连续等 复杂地质条件。本文采用了 FLAC 数值模拟软件，首先对复采后地面沉陷情况进行了模 拟。用 DSC-TG 热分析技术测定煤在低温氧化过程的吸氧量与放热量，用导热仪测出碎 煤导热系数，并建立了复采面采空区条带开采时巷壁遗煤漏风氧化的数学模型，模拟遗 煤氧化的实际情况，求出其实际自燃发火期值，通过实测与模拟技术为井亭煤矿复采区 安全回采提供理论指导。 关键词关键词复采模拟地面沉陷热分析技术遗煤氧化 山东科技大学硕士学位论文摘要 ABSTRACTABSTRACT Based on the problem, such as the choice of mining , the affect to the buildings of the ground subsidence, ventilation type, spontaneous combustion of mine, the control of thegas,the residual coal of the er hydraulic mining districtissurveyed through the roadway beneath the gob, and the working s, the working techniques and the roadway timbering technology are determined according to corresponding calculation, meantime the ground subsidence after repeated miningissimulated by the technology of analogue simulation and computer numeric calculation; The value simulation reflects the process with the structure system, solves the large-scale algebra simultaneous equation group with the computer. The main advantage of the value isthatitcan consider the complex condition very well, such as the medium aeolotropies, the non-symmetrical characteristic, the complex boundary condition and the non-continuously characteristic. This paper uses the FLAC software to simulate the ground subsidence situation after the repeated mining. The oxygen and released heat during the coal oxidation process in low temperature are menstruated by DSC-TG thermo analysis technology and the thermal conductivityof fragmentizedcoalismeasuredbythermal-conductiveinstrument,establishingthe mathematical model of air-leakage oxidationofthe roadway residual coalin strip-partial miningofthe repeated mining face, so that the actual conditions of the residual coaloxidation can be simulated and the actual spontaneous combustion time can be figured out, whichcan provide theoretical direction for safety working in the repeated mining districtof Jingting Coal Mine through field survey and simulation technology. KeywordsKeywordsKeywordsKeywordsrepeated mining;simulation; ground subsidence;thermoanalysis; residual coaloxidation 山东科技大学硕士学位论文目录 目目录录 1 1 1 1 绪绪绪绪 论论论论....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................1 1 1 1 1.1 引 言............................................................................................................................... 1 1.2 问题的提出及其意义...................................................................................................... 1 1.3 研究的内容...................................................................................................................... 2 2 2 2 2 矿井及复采采区概况矿井及复采采区概况矿井及复采采区概况矿井及复采采区概况........................................................................................................................................................................................................................................................................................................................................................................................................................3 3 3 3 2.1 矿井概况.......................................................................................................................... 3 2.2 复采区位置与范围.......................................................................................................... 4 2.3 复采区开采技术条件...................................................................................................... 5 2.4 复采区开采技术方案...................................................................................................... 7 3 3 3 3 不规则条带式穿采方法与回采工艺不规则条带式穿采方法与回采工艺不规则条带式穿采方法与回采工艺不规则条带式穿采方法与回采工艺....................................................................................................................................................................................................................................................................................................12121212 3.1 工作面开采工艺............................................................................................................ 12 3.2 通风与安全.................................................................................................................... 13 3.3 采高及回采层位的确定................................................................................................ 14 3.4 顶板管理........................................................................................................................ 15 4 4 4 4 地面下沉量模拟研究地面下沉量模拟研究地面下沉量模拟研究地面下沉量模拟研究................................................................................................................................................................................................................................................................................................................................................................................................................17171717 4.1FLAC 数值模拟方法与其基本原理...........................................................................17 4.2 数值模拟计算模型的建立............................................................................................ 20 4.3 岩体力学参数的选取.................................................................................................... 22 4.4 模拟方案的确立............................................................................................................ 22 4.5 数值模拟结果与分析.................................................................................................... 23 4.6 小结................................................................................................................................ 32 5 5 5 5 复采区域煤炭自然发火规律对开采的影响复采区域煤炭自然发火规律对开采的影响复采区域煤炭自然发火规律对开采的影响复采区域煤炭自然发火规律对开采的影响........................................................................................................................................................................................................................................33333333 5.1 煤的总吸氧量测定与放热量随温度的测定................................................................. 33 5.2 导热系数的测定............................................................................................................. 35 5.3 用热重技术研究煤自燃的规律性................................................................................ 36 6 6 6 6 结结结结 论论论论........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................45454545 致致致致谢谢谢谢........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................47474747 参考文献参考文献参考文献参考文献................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................48484848 山东科技大学硕士学位论文目录 ContentsContentsContentsContents 1 1 1 1 IntroductionIntroductionIntroductionIntroduction....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................1 1 1 1 1.1 Foreword...............................................................................................................................1 1.2The significanceof this problem................................................................................................1 1.3The content of this research......................................................................................................2 2 2 2 2 TheTheTheThe generalgeneralgeneralgeneral situationsituationsituationsituation ofofofofthethethethe minemineminemine andandandand thethethethe repeatedrepeatedrepeatedrepeatedminingminingminingmining areaareaareaarea............................................................................................................................................................3 3 3 3 2.1The general situationof themine................................................................................................3 2.2 Theposition and the rangeof therepeated mining area.................................................................4 2.3 Themining condition of the repeated mining area........................................................................5 2.4 Themining program of the repeated mining area.........................................................................7 3 3 3 3 TheTheTheThe irregularirregularirregularirregular tapetapetapetape acrossacrossacrossacross stylestylestylestyle miningminingminingmining andandandand thethethethe stopingstopingstopingstoping craftcraftcraftcraft.................................................................................................................... 12121212 3.1 Theplane sketch map of thedisposal of thetunnel.....................................................................12 3.2The mining and the working system.............................................................................12 3.3Ventilation and the safety........................................................................................................13 3.4 Thedifine of the mining height and the stoping position.............................................................14 3.5The management of theroof...................................................................................................15 4 4 4 4 TheTheTheThe reseasrchreseasrchreseasrchreseasrchononononthethethethe