水科学与工程技术
水科學與工程技術
수과학여공정기술
WATER SCIENCES AND ENGINEERING TECHNOLOGY
2015年
4期
61-63
,共3页
南水北调中线%渠道%纤维混凝土%试验%效果
南水北調中線%渠道%纖維混凝土%試驗%效果
남수북조중선%거도%섬유혼응토%시험%효과
Mid-Line of South-North Water Diversion%canal%fibre reiforced concrete%experiments%effect
在南水北调中线京石段应急供水工程渠道衬砌施工过程中，部分区段渠道衬砌混凝土表面外观质量差，不仅产生了很多裂缝，而且冬季过后在渠底和渠坡水位变化区，出现了较为普遍的冻融剥蚀破坏。为提高渠道衬砌混凝土的耐久性，采用掺加纤维进行渠道混凝土衬砌试验，并取得了成功，为南水北调中线工程其他段渠道混凝土衬砌施工提供了宝贵经验。
在南水北調中線京石段應急供水工程渠道襯砌施工過程中，部分區段渠道襯砌混凝土錶麵外觀質量差，不僅產生瞭很多裂縫，而且鼕季過後在渠底和渠坡水位變化區，齣現瞭較為普遍的凍融剝蝕破壞。為提高渠道襯砌混凝土的耐久性，採用摻加纖維進行渠道混凝土襯砌試驗，併取得瞭成功，為南水北調中線工程其他段渠道混凝土襯砌施工提供瞭寶貴經驗。
재남수북조중선경석단응급공수공정거도츤체시공과정중，부분구단거도츤체혼응토표면외관질량차，불부산생료흔다렬봉，이차동계과후재거저화거파수위변화구，출현료교위보편적동융박식파배。위제고거도츤체혼응토적내구성，채용참가섬유진행거도혼응토츤체시험，병취득료성공，위남수북조중선공정기타단거도혼응토츤체시공제공료보귀경험。
During the hydro canal lining construction of th e urgent water supply project for the section of Beijing-Shijiazhuang,which is a part of China’s National South-to-North Water Diversion Project,some surface quality issues and cracks were identified on the canal concrete liner in a few sections. These problems have become especially obvious after a winter season; the freeze thaw damages and denudation on the concrete liner were severe. At the bottom and slope sides within the water level changing zones,the freeze thaw damages and denudation have become a widespread common problem. In order to improve the durability of the concrete liner,experiments were performed using fibre reinforced concrete liner,and the results came out positive and successful. This pilot program has provided very valuable data and experience to the quality improvement of hydro canal concrete lining construction for the other sections of the overall South-North Water Diversion Project.
