中厚-厚煤层近距离高效同采矿压控制研究.pdf

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1、第23卷第5期中国矿业V0l_23，No．52014年5月CHlNAMININGMAGAZINEMav．2O14中厚一厚煤层近距离高效同采矿压控制研究汪月伟，董淑文，樊俊鹏。，成云海。(1．中国矿业大学(北京)资源与安全工程学院，北京100083；2．中煤集团山西金海洋能源有限公司，山西朔州036800；3．安徽理工大学能源与安全学院，安徽淮南232001)摘要：南阳坡煤矿主采煤层为3号煤和4号煤，层间距23～26m，下部煤层开采受上部煤层开采损伤影响，为中厚一厚煤层近距离同采。基于煤岩物理力学测试、在线应力监测、支护载荷无损监测及数值计算，得出了监测区域的侧向应力分布规律，3煤

2、开采对下煤层传递角为45。，显著支承压力增高区域传递角为31。；监测评价沿空30205运输顺槽、4105运输顺槽支护效果，分析下煤层沿空巷道变形严重的四个原因；确定了未采下区段4107回风顺槽设计留设的区段煤柱尺寸以及正常条件下下煤层滞后上煤层合理距离。研究结果有助于合理设计采场及选取支护参数，有利于实现中厚一厚煤层近距离高效同采。关键词：中厚一厚煤层；近距离；高效同采；矿压控制中图分类号：TD322文献标识码：A文章编号：1004—4051(2014)05—0104—04Studyongroundpressurecontrolofeffectivesimultaneouspro

3、ductioninclosedistancecoalseamsWANGYue-wei～，DONGShu—wen，FANJun—peng。，CHENGYun-hai。(1．FacultyofResourcesandSafetyEngineering，ChinaUniversityofMiningandTechnology(Beijing)，Beijing100083，China；2．ShanmJinhaiyangEnergyCompanyLimitedTechnicalDepartment，ChinaCoalEnergyGroup，Shuozhou036800，China；3．Co

4、llegeofEnergyandSafety，AnhuiUniversityofScienceandTechnology，Huainan232001，China)Abstract：No．3andNo．4coalseamsinNanyangpominearemainminingcoalseamswithdistancesfrom23mtO26m，andNo．4coalseam(1ower)mininginfluencedbyNo．3coalseam(upper)miningfailure，andthisissimultaneousminingofmedium—thickness(N

5、o．3)andhigh—thickness(No．4)coalseaminshortdistance．Basedonphysicalandmechanicaltests，on—linestressmonitoring，supportloadnon—destructivetestingandnumericalcomputation，itwasshowedthatdistributionlawoflateralstressinmonitoringarea，carryingangleoflowercoalseamis45。andcarryingangleinsignificantabu

6、tmentpressureincreaseregionis31。forNo．3coalseammining．Thesupportingeffectsofalonggobareaof30205transportationdriftand4105transportationdriftweremonitoredandevaluated．Fourreasonsofseriousdeformationofalonggobroadwayinlowercoalseamwereanalyzed．Thesizeofsectioncoalpillaratreturnair-wayofnextnon-

7、miningsectionface4107andthereasonabledistanceoflowercoalseamlaggingbehinduppercoalseamundernormalconditionsweredetermined．Theresearchresultswillcontributetoreasonableminingdesignandchoiceofsupportingparameters，andrealizeeffectivesimultaneousm