南水北调中线穿黄工程南岸明渠高边坡稳定性研究  

Stability of High Slope in Open Channel on South Bank for Crossing the Yellow River Project in the Middle Route of South-to-North Water Diversion Project

作　　者：邢义川[1] 张爱军[2] 安鹏[1] 张少宏[2] 

机构地区：[1]中国水利水电科学研究院,北京100048 [2]西北农林科技大学水利与建筑工程学院,陕西杨凌712100

出　　处：《南水北调与水利科技》2014年第3期148-151,164,共5页South-to-North Water Transfers and Water Science & Technology

基　　金：中国水利水电科学研究院开放基金资助项目(2009025)

摘　　要：穿黄南岸连接段渠道位于黄土地区,工程地质条件复杂,约有2/3的渠段位于地下水位以下,该渠段黄土高边坡高度可达80m,属一级建筑物。其黄土高边坡的稳定性是南水北调工程建设中关键的技术难题之一。分析了该地区大量黄土基本试验资料,并选取了计算参数,通过极限平衡法、非线性有限元和动力有限元分析计算了原设计方案进口和出口段黄土高边坡的稳定性,修改了原设计坡型,提出了符合黄土特点的新边坡设计方案。稳定验算结果表明,新设计方案优于原方案。The connecting canal of south bank for Crossing the Yellow River Project is located in the loess area,which belongs to class I building with complicated geological conditions.About 2/3of the canal section is located below groundwater level,and the highest height of high loess slope at this segment reaches 80m.The high loess slope stability is one of key technical problems in construction of the South-to-North Water Diversion Project.In this paper,a large number of loess fundamental test data in the region were analyzed and the parameters were selected for the calculations of loess high slope stability of the outlet and inlet sections from the original design using the limit equilibrium method,nonlinear finite element analysis,and dynamic finite element analysis.A new slope design scheme was proposed based on the characteristics of loess.The results suggested that the new design is better according to the slops stability calculations.

关 键 词：南水北调中线 黄土高边坡 设计方案修改 边坡稳定性验算 

分 类 号：TV68[水利工程—水利水电工程]