金属矿开采

分类号：TD853密级：公开UDC：单位代码：10424工程硕士学位论文鲍店矿厚煤层提高上限开采方案王彦明申请学位级别：工程硕士领域名称：矿业工程指导教师姓名：臧传伟职称：副教授副指导教师姓名：康丹职称：高级工程师山东科技大学二零一六年五月论文题目：鲍店矿厚煤层提高上限开采方案作者姓名:王彦明入学时间：2014年5月领域名称：矿业工程研究方向:矿山压力及控制指导教师:臧传伟职称:副教授副指导教师:康丹职称:高级工程师论文提交日期：2016年4月18日论文答辩日期：2016年5月22日授予学位日期：STUDYONIMPROVETHEMININGUPPERLIMITTOFTHICKCOALSEAMANDSECURITYTECHNOLOGYABOUTBaoDianCOALMINEADissertationsubmittedinfulfillmentoftherequirementsofthedegreeofMASTEROFENGINEERINGfromShandongUniversityofScienceandTechnologybyWangYanMingSupervisor:AssociateProfessor：ZangChuanweiAssociateSupervisor:KanDanCollegeofMiningandSafetyEngineeringMay声明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。硕士生签名：日期：AFFIRMATIONIdeclarethatthisdissertation,submittedinfulfillmentoftherequirementsfortheawardofMasterofPhilosophyinShandongUniversityofScienceandTechnology,iswhollymyownworkunlessreferencedofacknowledge.Thedocumenthasnotbeensubmittedforqualificationatanyotheracademicinstitute.Signature:Date:山东科技大学工程硕士学位论文摘要摘要本文结合鲍店煤矿5303-2工作面的开采条件，进行了厚煤层提高开采上限关键问题研究。运用理论分析、三维有限元数值模拟软件Flac-3D等手段，分析不同开采方案引起的上三带范围的变化，确定了鲍店煤矿5303-2工作面合理提高开采上限的回采方案，并提出了相应的安全技术措施，合理的安全煤柱布置方案，科学的回采工艺。所确定的提高上限回采方案在现场成功进行了应用，得出如下结论：（1）通过理论分析和数值模拟软件Flac-3D模拟分析，结合现场开采技术条件，合理的提高煤层上限开采的采矿方案是可行的。三个开采区域的开采上限分别提升为4m、7.3m、10.5m，通过数值模拟分析得出相应的塑性区高度分别为29.3m、36.6m、39.24m，通过理论分析得出最低导水裂隙带高度分别为37.32m、38.8m、41.39m。（2）通过归纳总结和计算，提供了较好的安全煤柱留设方案，大大减小了煤柱压煤量，进一步的增加了煤炭资源的回收利用率，提高了经济效益，符合国家能源节约绿色开采的规定。其中V-F74、V-F211及V-F212三条断层的保护煤柱宽度分别为W1=31.9m，W2=63.8m，W3=91.2m，均小于原煤柱宽度。所确定的防水煤岩柱留设尺寸分别为46m，54m，63m。鲍店煤矿鲍店煤矿5303-2工作面提高煤层开采上限的采煤方案的成功，增加了煤炭资源的回收利用率，提高了经济效益就，为我国类似条件的煤矿开采提供了经验和指导，具有重要的意义和价值。关键词：开采上限；防水煤柱；厚煤层开采；安全技术；覆岩破坏；开采参数山东科技大学工程硕士学位论文摘要ABSTRACTThepaperstudyonhowtoraisetheupperlimitofthickcoalseammining,combinedwiththeminingconditionsof5303-2workingfaceintheBaoDiancoalmine.Bymeansoftheoreticalanalysisandthree-dimensionalfiniteelementnumericalsimulationsoftwareFlac-3D,thevariationoftheupperthreebandscausedbydifferentminingschemesisanalyzed,theupperlimitofthickcoalseamminingschemeof5303-2workingfacewasdetermined.Besides,thecorrespondingsafetytechnicalmeasures,reasonablesafetycoalpillarlayoutschemeandscientificminingtechnologywasdetermined.Thedeterminationoftheimprovedupperboundminingschemewassuccessfullyappliedinthefield,andthefollowingconclusionsweredrawn:（1）ThroughtheoreticalanalysisandnumericalsimulationsoftwareFlac-3Dsimulationanalysis,combinedwiththefieldminingtechnicalconditions,areasonableimprovedupperboundminingschemeisfeasible.Threeminingareasofminingupperlimitwereupgradedto3.5m,7m,10m,throughthenumericalsimulationanalysis，thecorrespondingplasticzoneheightwererespectively29.3m,36.6m,39.24m.Thoughtheoreticalanalysis,theminimumheightofwaterflowingfracturedzonewere37.5m,38.15m,39.31m.（2）Throughthesummaryandtheoreticalcalculation,thebettersecuritycoalpillardesignschemewasprovided.Itcangreatlyreducethecoalpillarpressesthecoalamount,increasetherecoveryofcoalresourcesutilizationandimprovetheeconomicbenefit,itconformtothenationalenergysavinggreenminingprovisions.ThewidthofcoalpillarofV-F74,V-F211andV-F212wererespectively31.9m,63.8m,91.2m,allofwhicharesmallerthanthewidthofprimarycoalpillar.Thedeterminedsizeofthewaterproofcoalrockpillarisrespectively41m,47m,60m.Theupperlimitofthickcoalseamminingschemeof5303-2workingfacewassuccessfullyappliedinBaoDiancoalmine,whichincreasedtherecyclingrateofcoalresources,improvedtheeconomicefficiency.ItprovidesexperienceandguidanceforthesimilarconditionsofcoalmininginChinaandhasanimportantsignificanceandvalue.Keywords:miningupperlimit;waterproofcoalpillars;thickcoalseammining;securitytechnology;overburdenfailure;miningparameter山东科技大学工程硕士学位论文目录目录1绪论......................................................................................................11.1课题的来源及研究意义...............................................................11.2国内外研究现状...........................................................................21.3研究内容与技术路线...................................................................52工作面开采地质条件与分析..............................................................62.1工作面概况...................................................................................62.2地层及工程地质条件...................................................................72.3水文地质条件.............................................................................112.4本章小结.....................................................................................123提高上限开采方案及参数确定和安全煤柱的留设......................133.1覆岩破坏高度与分析.................................................................133.2防水煤（岩）柱尺寸的确定.....................................................213.3断层保护煤柱的确定.................................................................273.4本章小结.....................................................................................284工作面安全技术及应急措施..........................................................294.1工作面过断层、煤层破碎区安全技术措施.............................304.2防治水、防溃砂安全技术措施.................................................314.35303-2工作面水害救援应急方案......