对平原地区土坝防渗墙的设计原理分析

防渗墙是目前水库除险加固工程中广泛应用的一种方法,在很多平原地区的水闸和堤坝工程中,也采用采用防渗墙做为防渗结构。本文通过对防渗墙工程经验的搜集,分析了平原区土坝土防渗墙的设计原理,借以供设计人员进行参考使用。

浅议土坝混凝土防渗墙槽孔浅层塌孔和渗漏的处理方法——以横县六蓝水库除险加固工程为例

通过工程实例,介绍土坝混凝土防渗墙槽孔浅层塌孔、渗漏处理方法,供类似工程参考。

高压旋喷防渗墙施工技术在鸳鸯池水库中的应用研究

近年来,高压旋喷防渗墙施工技术在病险水库除险加固工程中得到广泛应用,施工技术成熟,对土石坝的防渗效果良好。鸳鸯池水库在除险加固施工中对土坝段采用了高压旋喷防渗墙施工技术,为了保证施工效果和确保工期,对部分传统施工工艺进行了改进。采取开挖检查、钻孔岩芯取样以及现场注水试验等检查手段,对高压旋喷防渗墙质量进行了评价。

水利工程中柔性防渗墙的设计探析

本文简要介绍了混凝土柔性防渗墙的工作机理,并根据多年的柔性防渗墙的设计实践经验,探讨了平原地区土坝混凝土的设计及施工原则,以供大家学习参考之用。

新县长洲河水库除险加固工程土坝坝体防渗墙施工浅析

水库除险加固土坝防渗墙施工是关键,作者以长洲河为实例,详细介绍了土坝防渗墙施工情况,为其它土坝防渗墙施工提供有益的参考。

Analysis and evaluation on seepage stability of Hongxing reservoir dam,Heilongjiang

Hongxing reservoir was constructed on the floodplain of Hulan River in Heilongjiang. The geological problem of the reservoir is the seepage of the dam base and its related seepage stability. The leakage of the reservoir is caused by the water head differences between the upstream and downstream of the dam. Severe seepage could decrease the engineering benefits of the reservoir. Moreover,infiltration function of water will influence the safety of the dam. Through the analysis on the granule constitute and the formation of the dam base,the types of the seepage failure apt to happen were defined and the anti-infiltration and the permissible depression ratio were determined. Using the numerical simulation software GMS,the two-dimension numerical modeling has been carried out to analyze the seepage field of the reservoir. Through the two conditions modeling with concrete impervious wall and no concrete impervious wall,the largest flow rate,single-wide seepage discharge and the max infiltration gradient of the dam base were calculated. According to the permeable depression ratio of the dam base,the seepage stability of Hongxing reservoir dam base was analyzed.