排山楼金矿采空区充填技术研究.pdf

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1、第21卷第1期中国矿业Vol_21。No．12012年1月CHINAMININGMAGAZINEJan．2012排山楼金矿采空区充填技术研究任凤玉，翟会超，曹建立，常帅(东北大学，辽宁沈阳110819)摘要：本文根据排山楼金矿采空区稳定到亚稳定的现状，以及地表尾矿库需要保护程度的要求，提出留“L”字形保安矿柱和从地表打井分区充填采空区的综合治理方案。其中北侧空区稳定性较好，用VCR法从地表掘井后，用废石充填+碎石混凝土接顶。南侧空区目前处于亚稳定状态，采取钻孔监控下逐步充填方案，即从稳定性较好部位向稳定性较差部位依次打井充填。在充填井的施工与充填

2、过程中，用钻孑L监测空区冒落状况，建立报警系统，确保施工安全。此外，对于南侧空区，还考虑了一旦冒透地表后的散体充填黄泥的防渗处理预案。目前该方案正在实施中，其中北侧空区已用VCR法凿井42m。初步实施效果与分析表明，上述监控充填方案，能够较好地适应空区围岩的稳定状态，可使空区得到安全、经济、高效治理。关键词：空区处理；RG录像监测；VCR法；黄泥注浆中图分类号：TD853．34文献标识码：B文章编号：1004—4051(2012)O1—0072—03StudyontechnologyofminedoutareafillinginPaishanlo

3、ugoldmineRENFeng-yu，ZHAIHui—chao，CAOJian-li，CHANGShuai(NortheasternUniversity，Shenyang110004，China)Abstract：Inthispaper，accordingtothepresentsituationofmined—outareastabilityinPpaishanlougoldmine，whichisfromstabletolowstable，andtherequirementsofguardingsurficaltailingsreservo

4、ir，weputforwardacomprehensivetreatmentplan，thatis，remainingsafetypillarsinundergroundproductionworkfaceandfillingtheminedoutareabythefillingwellfromthesurface．ThefillingwellisexcavatedbymeansofVCRtechnique，drillingholesandblastinginsection．Thewasterocksandgravelconcretearecho

5、senasthefillmaterial，theformeristhemainfillingmateria1andthelatterisusedtocontacttheroof．Relatively，inthenorthside，becauseofthebetterstabilityofsurroundingrocks，makingwellandfillingactivitiesareoperatednormally．However，inthesouthside，thegradualfillingmethodisappliedduetolower

6、stablestateofmined—outareas，namelythefillingstepbystepfrombetterstableareastoless．Inthewholeprocessofbuildingwellsandfillingthem，thefallingsituationofmine—outroofismonitoredbydrill—ingholesandanalarmsystemisestablishedforsafetyofproductionwork．Besides，apreplanisdesignedtousey

7、ellowmudtofillloosebodytoformananti—seepagelayerincaseofmine—outroofcavingtosurface．Atpresent，themethodisinproductionandafillingwellhasbeenexcavated42metersbyVCRtechnique．Itwasprovedbytheeffectofexcavatedwellandtheoryanalysisthatthismethodcouldadapttothestabilityofsurrounding

8、rocksofthemine—outareasandasafe，economicandhighefficienttreatmentres