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1、搖第35卷第6期煤搖搖炭搖搖學(xué)搖搖報(bào)Vol.35搖No.6搖搖2010年6月JOURNALOFCHINACOALSOCIETYJune搖2010搖搖搖文章編號:0253-9993(2010)06-0900-04構(gòu)造控制型沖擊地壓的微地震監(jiān)測預(yù)警研究與實(shí)踐1,21,21,2333姜福興,苗小虎,王存文,宋加宏,鄧建明,孟搖飛(1.北京科技大學(xué)搖金屬礦山高效開采與安全教育部重點(diǎn)實(shí)驗(yàn)室,北京搖100083;2.北京科技大學(xué)搖土木與環(huán)境工程學(xué)院,北京搖100083;3郾朝陽礦業(yè)有限公司,山東滕州搖277517)摘搖要:采用微震監(jiān)測方法,研究了構(gòu)造控制型沖擊地壓的分類和預(yù)警方法,提出了將構(gòu)造控制型沖擊
2、地壓分為增壓和減壓2種類型。當(dāng)采掘工作面接近增壓型構(gòu)造時,微地震事件在構(gòu)造附近將出現(xiàn)明顯的“分區(qū)性冶,表明構(gòu)造附近在積聚應(yīng)力,可以作出危險(xiǎn)性預(yù)報(bào);當(dāng)構(gòu)造附近微地震事件能量不大,震動間隔較均勻,且能夠隨工作面推進(jìn)向遠(yuǎn)處遷移,表明構(gòu)造附近沒有大量積聚應(yīng)力,沖擊危險(xiǎn)性較小。在煤礦應(yīng)用時,通過分析微震事件的動態(tài)特性、分布特性和能量耗散特性,確定預(yù)警危險(xiǎn)區(qū),采用鉆孔法確定危險(xiǎn)區(qū)的危險(xiǎn)程度,最后作出危險(xiǎn)性預(yù)警,為制定對策提供依據(jù)。本文的研究結(jié)果已在山東朝陽煤礦千米深井沖擊煤層開采過程中得到了驗(yàn)證和應(yīng)用。關(guān)鍵詞:煤礦;沖擊地壓;微地震監(jiān)測;構(gòu)造區(qū);斷層中圖分類號:TD324郾2搖搖搖文獻(xiàn)標(biāo)志碼:APred
3、ictingresearchandpracticeoftectonic鄄controlledcoalburstbymicroseismicmonitoring1,21,21,2333JIANGFu鄄xing,MIAOXiao鄄hu,WANGCun鄄wen,SONGJia鄄hong,DENGJian鄄ming,MENGFei(1郾StateKeyLaboratoryofHigh鄄efficientMiningandSafetyofMetalMines,MinistryofEducation,UniversityofScienceandTechnologyBeijing,Beijing搖1000
4、83,China;2郾SchoolofCivilandEnvironmentalEngineering,UniversityofScienceandTechnologyBeijing,Beijing搖100083,China;3郾ChaoyangMineGroup,Tengzhou搖277517,China)Abstract:Byusingmicroseismic(MS)monitoringmethods,theclassificationandearlywarningmethodsoftectonic鄄controlledcoalburstwerestudied.Itwasproposed
5、thattectonic鄄controlledcoalburstcouldbedividedintotwotypes:stress鄄increasingtypeandstress鄄decreasingtype.Ifmicroseismiceventsoccurinalimitedzonewhileminingfacead鄄vancingtowardsthetectoniczone,itmeansthatminingstressiscentralizinginthiszoneandthepossibilityofcoalburstisincreasing.Ifmicroseismicevent
6、soccurinalargezonewhileminingfaceadvancingtowardsthetectoniczone,itmeansthatminingstressdistributsinthiszoneandthepossibilityofcoalburstisdecreasing.BasedonMSevents爺dynamicfeature,distributionruleandenergyspread,theburstdangerzonescanbedecided.Bydrillingdetectingholes,theburstdangergradescanensured
7、.Thispaper爺sfindingswereverifiedandappliedinChaoyangCoalMine,whichwasminingstrongbursttendencyseamatonekilometerminingdepth.Keywords:coalmine;coalburst;microseismicmonitoring;tectoniczone;fault搖搖斷層、褶曲等構(gòu)造可能積
