水利与建筑工程学报
水利與建築工程學報
수리여건축공정학보
TECHNIQUE OF SEEPAGE CONTROL
2013年
6期
1-5
,共5页
防渗帷幕%耐久性%侵蚀试验%加速侵蚀%低碱度软水
防滲帷幕%耐久性%侵蝕試驗%加速侵蝕%低堿度軟水
방삼유막%내구성%침식시험%가속침식%저감도연수
anti-seepage curtain%durability%erosion test%accelerated erosion%soft water with low alkalinity
针对低碱度软水条件下水泥灌浆帷幕的耐久性,采用加速腐蚀的室内试验方法,以溶出性 Ca2+量为评价指标,研究了渗透压力、HCO -3浓度、浆液配合比和水温等因素对帷幕耐久性的影响程度和规律。在高水头和低碱度软水作用下,100年后大岗山水电站坝基帷幕结石体性能将会出现一定下降,但幅度不大,不会对帷幕防渗体系产生严重的影响。试验所采用的研究方法和成果可为类似工程提供参考。
針對低堿度軟水條件下水泥灌漿帷幕的耐久性,採用加速腐蝕的室內試驗方法,以溶齣性 Ca2+量為評價指標,研究瞭滲透壓力、HCO -3濃度、漿液配閤比和水溫等因素對帷幕耐久性的影響程度和規律。在高水頭和低堿度軟水作用下,100年後大崗山水電站壩基帷幕結石體性能將會齣現一定下降,但幅度不大,不會對帷幕防滲體繫產生嚴重的影響。試驗所採用的研究方法和成果可為類似工程提供參攷。
침대저감도연수조건하수니관장유막적내구성,채용가속부식적실내시험방법,이용출성 Ca2+량위평개지표,연구료삼투압력、HCO -3농도、장액배합비화수온등인소대유막내구성적영향정도화규률。재고수두화저감도연수작용하,100년후대강산수전참패기유막결석체성능장회출현일정하강,단폭도불대,불회대유막방삼체계산생엄중적영향。시험소채용적연구방법화성과가위유사공정제공삼고。
The durability of the cement grouting curtain under low alkalinity soft-water were studied to analyze the influ-ence degree and law of the osmotic pressure ,HCO -3 concentration ,water-cement ratio of slurry ,water temperature and other factors on the curtain durability by using the mothod of accelerated erosion and considering the amount of the dis -solved Ca2 + as the evaluation index .With the high water-press and low alkalinity soft-water ,the performance of grouting curtain of Dagangshan Hydropower Station will be declined to a certain extent after 100 years ,but it will not have a seri-ous impact on the anti-seepage system .The test method and achievement can provide some references for similar projects .