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ID:52247027
大小:2.43 MB
页数:6页
时间:2020-03-25
《断裂构造发育对贵州两岔河水库岩溶渗漏的影响研究.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、水利水电技术第48卷2017年第3期断裂构造发育对贵州两岔河水库岩溶渗漏的影响研究黄顺涛(贵州中水建设管理股份有限公司,贵州贵阳550002)摘要:贵州两岔口水库地质环境复杂,断层构造发育破坏了库区地层结构,导致岩溶渗漏。为保证两岔河水库的正常运行,主要针对其岩溶渗漏的地质问题,在开展工程地质测绘、岩溶调查统计、钻孔勘探及压水试验等工作的基础上,分析了断裂构造对地层结构、岩体完整性、岩溶发育及水库渗漏的控制影响。研究表明:断层构造发育破坏了库区地层结构,形成“构造切1:2”,水库左岸不能形成地层封闭;岩体完整程度为破
2、碎一极破碎,地下岩溶强发育,易形成水库岩溶渗漏;地下岩溶管道发育方向基本和断层走向一致,断层构造对岩溶发育起着明显的控制作用;水库渗漏为折线式复合型渗漏。研究成果为岩溶地区水库防渗处理提供参考。关键词:断裂构造;地层结构;岩溶渗漏;两岔河水库;贵州省;水利水电工程建设;水电开发doi:10.13928/j.enki.wrahe.2017.03.023中图分类号:F407.9文献标识码:B文章编号:1000-0860(2017)03-0127—06Studyonimpactfromdevelopmentoffaults
3、tructureonKarstleakageofLiangchaheReservoirinGuizhouHUANGShuntao(GuizhouZhongshuiConstructionManagementCo.,Ltd.,Guiyang550002,Guizhou,China)Abstract:AsthegeologicalenvironmentofLiangchaheReservoiriscomplicated,thestratigraphicstructurewithinthereservoirareaisda
4、magedbythedevelopmentoffaultstructure,whichcausestheKarstleakage.Inordertoensurethenormaloperationofthereservoir,thedominateimpactfromthefaultstructureonthestratigraphicstructure,rockmassintegrity,Karstdevelopmentandreservoirleakageisanalyzedmaiulyforthegeologi
5、calproblemofKarstleakageonthebasisoftheengineeringgeologicalsur—vey,Karstinvestigation,drillingexploration,pressurewatertest,etc.Thestudyshowsthatthestratigraphicstructurewithinthereservoirareaisdamagedbythedevelopmentoffaultstructure,thusastructuralcuttingisfo
6、rmedandastratigraphietrapcannotbeformedattherightbankofthereservoir,whilethedegreeoftherockmassintegritybecomesfrombrokentoseriouslybrokenwithstronglydevelopedundergroundkarststructurethatispronetocreatethekarstleakageofreservoir.Furthermore,thedevelopingdirect
7、ionoftheKarstconduitisbasicallyconsistentwiththefaultstrike,thefaultstructurehasasignificantdominateeffectontheKarstdevelopmentandthereservoirleakageisakindofbroken-linecompositeleakage.Thestudyresultcanprovidereferencefortheanti—seepagetreatmentofreservoirinKa
8、rstregion.Keywords:faultstructure;stratigraphicstructure;Kamtleakage;LiangehaheReservoir;GuizhouProvince;waterresourcesandhydropowerProjectConstruction;hydropowerdevelopment
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