摘要
在碾压土石坝等水利工程中,水体沿混凝土坝体与地基土接触面处的渗漏问题是工程安全性的核心问题之一。在水利工程坝体及附属截水槽等工程设计过程中,计算地基土体与混凝土结构接触面冲刷临界比降,是确定坝体与截水槽高度、宽度等设计参数的前提条件。文中以北大壶二期供水工程为依托工程,通过模型试验手段,确定压实土体与混凝土之间的解除冲刷临界比降值,为坝体工程及截水槽设计,保证坝基渗流稳定性,节约工程造价提供科学依据。
In water conservancy projects such as compacted earth and rock dams,the leakage of water along the interface between concrete dam and foundation soil is one of the key problems of project safety.In the design process of dam body and auxiliary cutting flume,calculating the critical scour ratio of the contact surface between foundation soil and concrete structure is the precondition to determine the design parameters such as height and width of dam body and cutting flume.Based on the second phase water supply project of Beida Kettle,the critical scour reduction value between the compacted soil and concrete is determined by means of model test,which provides scientific basis for dam engineering and design of cut-off flume to ensure seepage stability of dam foundation and save project cost.
作者
李岩
付会成
LI Yan;FU Hui-cheng
出处
《东北水利水电》
2020年第7期42-44,72,共4页
Water Resources & Hydropower of Northeast China
关键词
压实黏土
混凝土接触面
接触冲刷比降
模型试验
compacted clay
concrete contact surface
contact erosion ratio
model test
