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时间:2020-04-20
《露井协调开采顺序对露采边坡变形破坏影响规律研究.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、2013年第10期煤炭工程doi:10.11799/ce20131O003露井协调开采顺序对露采边坡变形破坏影响规律研究李绍臣,周杰,丁鑫品,赵汝辉,(1.煤炭科学研究总院矿山安全技术研究分院,北京100013;2.煤炭科学研究总院煤炭资源高效开采与洁净利用国家重点实验室,北京100013)摘要:露井协调开采顺序关系到两种开采方式之间相互制约和影响的程度,结合平朔矿区露并协采工程实践,设计先井工后露天开采和先露天后井工开采两套方案,并分别对两套方案进行数值模拟,对比分析了不同露井协调开采顺序下露采边坡变形破坏特征。根据分析结果,从维护边坡平
2、整和稳定的角度,建议在露井协采生产实践中,对于计划进行内排的矿山且内排进度超前于井采扰动的范围时,可优先考虑采用先露天后井工的开采模式,除此之外,建议采用先井工后露天的开采模式且露天开采进度滞后于井采活跃期。关键词:露井协采;开采顺序;边坡变形破坏;井采扰动中图分类号:TD824.7文献标识码:A文章编号:1671—0959(2013)10-0007-04StudyonCoordinatedMiningSequenceBetweenSurfaceMineandUndergroundMineAfectedtoDeformationandFai
3、lureLawofSurfaceMineSlopeLIShao—chen,ZHOUJie,DINGXin—pin._,ZHA0Ru—hui'(1.MineSafetyTechnologyBranch,ChinaCoalResearchInstitute,Beijing100013,China;2.NationalKeyLabofCoalResourceHighEficientMiningandCleanUtilization,ChinaCoalResearchInstitute,Beijing100013,China)Abstract:Th
4、ecoordinatedminingsequencerelationshipbetweenthesurfacemineandtheundergroundmineisrelatedtothedegreeofthemutualrestrictionandinfluencesbetweenthetwominingmethods.IncombinationwiththeengineeringpracticesonthecoordinatedminingbetweenthesurfacemineandundergroundmineinPingshuo
5、MiningArea,anumericalsimulationwasconductedonthetwodesignedplants,includingtheundergroundminingfirstandthenthesurfaceminingandthesurfaceminingfirstandthenundergroundmining.Acomparisonanalysiswasconductedonthedeformationandfailurefeaturesoftheslopesinthesurfacemining.Accord
6、ingtotheanalysisresults,fromaviewtokeeptheflatandstableoftheslope,theminingmodelofundergroundmininglaggingbehindopen—pitminingwassuggestedincoordinatedopen—pitwithundergroundminingpracticeinconditionthatinnerdumpwasplannedtobuildandtheprogressofinnerdumpisaheadoftherangeof
7、influencecausedbyundergroundmining.Ifnot,theminingmodelofopen—pitmininglaggingbehindundergroundminingwassuggested.Keywords:coordinatedminingbetweensurfacemineandundergroundmine;miningsequence;deformationandfailureofslope;miningdisturbanceofundergroundmine露天与井工协调开采作为一种新型的开采
8、方式,可以采与井工开采相互干扰,使得露采边坡的稳定性受到严重实现露天开采与井工开采的优势互补,减少资源的浪费,影响。是实现浅埋资源绿色开采的必然选择⋯。由于露井协采中国外关于露井
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