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ID:52169931
大小:1.46 MB
页数:6页
时间:2020-03-23
《三山岛海底金矿突涌水优势渗流通道与来源研究.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、JournalofEngineeringGeology工程地质学报1004—9665/2015/23(4)一0784-06DOI:10,13544/j.cnki.jeg.2015.04.029三山岛海底金矿突涌水优势渗流通道与来源研究水郭捷①马凤山①赵海军①李克蓬①吕树新②原冬成②(①中国科学院地质与地球物理研究所,中国科学院页岩气与地质工程重点实验室北京100029)(②山东黄金矿业(莱州)有限公司三山岛金矿莱州261442)摘要在对巷道导水裂隙详细调查量测的基础上,通过对导水裂隙产状的归纳总结,结合涌水水样的温度、矿
2、化度及氢、氧同位素的动态监测结果,分析了三山岛金矿两个矿区的渗流优势方位以及矿坑水与地表水体的连通性。研究表明:西山矿区的渗流优势方位与最大水平地应力平行,而新立矿区的渗流优势方位与最大水平地应力近于垂直;西山矿区存在海水、基岩咸水和第四系淡水的稳定补给,新立矿区的咸水和淡水补给量不断减小,海水补给量不断增大;新构造断裂对矿区渗流优势方位的控制作用大于采动裂隙,使得西山矿坑与地表水体存在良好的连通性,也控制着海水补给矿坑的方式;而新立矿仅在采动裂隙的影响下与海水、咸水和淡水存在较弱的连通性。关键词海底金矿突涌水新构造断裂
3、导水优势通道连通性中图分类号:P641.463文献标识码:APREFERREDSEEPAGECHANNELSANDSoURCEOFWATERINRUSHINSEABEDGoLDMINEATSANSHANDAOGUOJie①MAFengshan①ZHAOHaijun①LIKepeng①LUShuxin②YUANDongcheng②((~KeyLaboratoryofShaleGasandGeoengineering,Institute0厂GeologyandGeop~ics,ChineseAcademyofSciences
4、,Beifing100029)((~2SanshandaoGoldMineofShandongGoldMiningCo.,Ltd.,Laizhou261442)AbstractThispaperisbasedonthedetailedinvestigationofroadwaywaterflowingfracturesforthewaterseepage.Itanalyzestheconnectivityadvantageoforientationandminewaterseepageandsurfacewaterbod
5、iesoftwogoldminesatSanshadao.ItsummarizesthedistributionofcrackoccmTence,andgushingwatersampletemperature,salinityanddynamicmonitoringoftheresultsofhydrogenandoxygenisotope.ThestudySHOWSthatthewater—seepagedominantorientationinthedistrictofXishanmineisparalleltot
6、hemaximumhorizontalprincipalstress.TheoptimaldirectionofXinliminewaterseepageisnearlyperpendiculartothemaximumhorizontalprincipalstress.TheXishanminehasstablerechargeofseawater,rocksaline,andQuaternaryfleshwater.IntheXinlimine,theproportionsofsalineandfleshwateri
7、ninrushingwaterinminepitsarediminishinggradually,astheseawaterincreases.Theroleofneotectonicfracturesincontrollingthedominantorientationsofminewaterseepageisstrongerthanthatoffracturesdevelopedbyexcavation.TheneotectonicfracturesmaketheXishanminehavewellconnectiv
8、itywithsurfacewatersandcontroltherechargeprocessoftheseawater.Thereisweaker收稿日期:2015-04—25;收到修改稿日期:2015-05-28.基金项目:国家自然科学基金项目(41172271,41372323,41402280)资助.第一作
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