胶凝砂砾石的工程性质分析  

Analysis on engineering properties of cement-sand-gravel

作　　者：杜双全 范适生 DU Shuang-quan;FAN Shi-sheng(Sichuan Minjiang Port and Navigation-Power Development Co.,Ltd.,Leshan 614401,China;Sichuan Communication Surveying and Design Institute Co.,Ltd.,Chengdu 610017,China)

机构地区：[1]四川岷江港航电开发有限责任公司,四川乐山614401 [2]四川省交通勘察设计研究院有限公司,四川成都610017

出　　处：《水运工程》2021年第12期125-128,144,共5页Port & Waterway Engineering

摘　　要：胶结砂砾石坝结合了土石坝造价低及混凝土坝安全性高的优点,可大幅提高土地利用率,在遇超标洪水后不会溃堤,恢复期短,抢险救灾难度大幅降低。通过总结目前国内外胶凝砂砾石坝工程实例的优势,结合岷江犍为航电枢纽工程库区胶凝砂砾石堤防工程施工实例,通过人工选择胶凝材料与砂砾石拌和、摊铺、碾压模拟砂卵石的成岩过程。试验分析人工合成胶凝砂砾石的工程性质,确定最优配合比,并与冶勒电站天然钙质胶结的胶凝砂砾石的工程性质进行对比。结果表明,采用人工合成胶凝砂砾石筑堤坝安全可行,可供同类工程参考。Cement-sand-gravel dam combines the advantages of low cost of earth rock dam and high safety of concrete dam,which can greatly improve the land utilization rate.In case of excessive flood,it will not break the dam and has a short recovery period,and the difficulty of rescue and disaster relief is greatly reduced.We summarize the advantages of current examples of cement-sand-gravel dam projects at home and abroad,simulate the diagenetic process of sand gravel by manually selecting cementitious materials and sand gravel for mixing,paving and rolling combining with the construction example of cement-sand-gravel dam project in the reservoir area of Qianwei navigation-power junction project in Minjiang River,test and analyze the engineering properties of synthetic cement-sand-gravel to determine the optimal mix proportion,and compare it with the engineering properties of natural calcium cemented cement-sand-gravel in Yele hydropower station.The results show that it is safe and feasible to use synthetic cement-sand-gravel to build dam,which can provide references for the similar projects.

关 键 词：胶凝砂砾石 配合比 成岩过程 堤坝 犍为航电枢纽 

分 类 号：U617[交通运输工程—船舶及航道工程]