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南水北调郑州段2-1标段地层土体大多为粉细砂层,且地下水位较高,为了解决砂质渠道边坡稳定问题,设计对一级马道以下渠道全断面进行1.5m厚粘土换填。由于现场土料土质不均匀和土料数量不能满足填筑要求,标段附近没有可利用的料场,为了解决这一问题,对现场土料掺加一定量水泥进行试验研究。根据试验研究成果,经设计同意,已经采用路拌法进行施工,填筑质量满足设计要求。
In the section 2-1 of the section of Zhengzhou South of the South-to-North Water Diversion, most of the soil layers are fine silt layers with high groundwater level. In order to solve the problem of slope stability of sandy channels, . Due to the uneven soil quality and the quantity of soil material in the site, it is not possible to meet the requirements of filling. There is no available yard near the tenders. In order to solve this problem, a certain amount of cement is added to the field soil for experimental research. According to the experimental research results, the design agreed, the road mixing method has been used for construction, filling quality to meet the design requirements.