防洪堤工程堤身砂砾石填筑大粒径控制问题

在青田县城市防洪工程堤身砂砾石填筑工程施工中,在保证工程质量的前提下,为了降低工程投资,通过天然料与筛分料填筑试验分析,在工程施工前分别对不同填筑厚度的筛分料和天然料进行不同次数的碾压,采用灌水法进行干密度检测,得到各组试验成果,通过试验成果分析和实际填筑抽样检查,级配良好的天然砂砾石料填筑碾压后,完全能满足设计要求,取得明显的经济效益.

Grain Size Control of Gravel Filling in Dyke Project

The filling experiment of flood dyke combined with natural materials and screening materials is introduced in ur- ban flood control project in Qingtian. In order to ensure the project and to reduce the project investment, the natural materials and screening materials with different thickness are grinded and dry density by douche is detected before engineering construction. The test results and the sample survey on actual filling materials show that a good gradation of natural sandy gravel filling after rolling can fully meet the design requirements with significant economic benefits.