重庆建筑
重慶建築
중경건축
CHONGQING ARCHITECTURE
2013年
9期
27-30
,共4页
喷射混凝土%单层衬砌%抗渗机理%抗渗性能%防水技术%速凝剂%胶凝材料%纤维增强
噴射混凝土%單層襯砌%抗滲機理%抗滲性能%防水技術%速凝劑%膠凝材料%纖維增彊
분사혼응토%단층츤체%항삼궤리%항삼성능%방수기술%속응제%효응재료%섬유증강
shotcrete%single shell lining%impermeability mechanism%waterproof technology%accelerator%cementitious material%fiber strengthening
近年来随着喷射混凝土施工工艺和质量性能的提高,单层衬砌技术得到了迅速发展,在世界上许多国家都有了不同程度的应用,然而喷射混凝土单层衬砌的抗渗性能及防水技术却阻碍着该技术的全面推广。在此背景下,该文对国内外喷射混凝土单层衬砌抗渗及防水技术进行了调研,提出进一步深入研究的思路和设想。主要基于两个层面:一个是基于多元复合胶凝材的喷射混凝土抗渗性能的研究,包括抗渗性能评价、渗透机理分析以及抗渗技术措施等;另一个是喷射混凝土单层衬砌结构的抗渗计算的研究,通过建立渗水预测模型,求解渗水高度和各支护层渗透系数之间的关系,并优选最佳方案,实现对整个支护体系的抗渗计算。
近年來隨著噴射混凝土施工工藝和質量性能的提高,單層襯砌技術得到瞭迅速髮展,在世界上許多國傢都有瞭不同程度的應用,然而噴射混凝土單層襯砌的抗滲性能及防水技術卻阻礙著該技術的全麵推廣。在此揹景下,該文對國內外噴射混凝土單層襯砌抗滲及防水技術進行瞭調研,提齣進一步深入研究的思路和設想。主要基于兩箇層麵:一箇是基于多元複閤膠凝材的噴射混凝土抗滲性能的研究,包括抗滲性能評價、滲透機理分析以及抗滲技術措施等;另一箇是噴射混凝土單層襯砌結構的抗滲計算的研究,通過建立滲水預測模型,求解滲水高度和各支護層滲透繫數之間的關繫,併優選最佳方案,實現對整箇支護體繫的抗滲計算。
근년래수착분사혼응토시공공예화질량성능적제고,단층츤체기술득도료신속발전,재세계상허다국가도유료불동정도적응용,연이분사혼응토단층츤체적항삼성능급방수기술각조애착해기술적전면추엄。재차배경하,해문대국내외분사혼응토단층츤체항삼급방수기술진행료조연,제출진일보심입연구적사로화설상。주요기우량개층면:일개시기우다원복합효응재적분사혼응토항삼성능적연구,포괄항삼성능평개、삼투궤리분석이급항삼기술조시등;령일개시분사혼응토단층츤체결구적항삼계산적연구,통과건립삼수예측모형,구해삼수고도화각지호층삼투계수지간적관계,병우선최가방안,실현대정개지호체계적항삼계산。
With the improvement of shotcrete's quality,performance and construction technology,single shell lining technique has developed rapidly in re-cent years and has been applied throughout the world. But the problems in its impermeability mechanism and waterproof technology are hindering its wide popularization. The two problems are studied and ideas for further study are also proposed. The study is focused on the following two aspects:the impermeability mechanism of shotcrete of multi-component cementitious material,including anti-impermeability assessment,impermeability mechanism analysis and anti-impermeability technical measures;the anti-impermeability calculation of shotcrete with single shell lining,and the relationship between water penetration height and permeability coefficient of each supporting layer is worked out through the water seepage prediction model to optimize the plan and calculate the impermeability of the whole support system.