大兴水利枢纽工程大坝基础防渗帷幕灌浆设计与施工

Design and Construction of Dam Foundation Impermeable Curtain Grouting in Da Xin Water-Control Project

大兴水利枢纽工程坝址地处岩溶发育地区,岩体中溶洞、溶隙等岩溶现象发育,坝体两岸原始地下水位低缓。为解决坝基及两岸绕坝渗漏问题,拦河坝坝基及两岸采用帷幕灌浆的防渗方式。主要对大兴水利枢纽工程大坝基础及两岸帷幕灌浆设计、施工过程中特殊情况的处理方法以及灌浆后所达到的要求和效果,进行了系统的阐述。

The dam of Da Xin Water-Control Project is located in the Karst area.The karst cave and solution crack develops in the rock and the original underground water level is low and slow in the both sides bank of the dam.It is adopted the curtain grouting as the seepage control measure at the foundation and both side banks of the dam to solve the seepage around the dam.In this essay,it systematically introduces the measures to the special cases of the dam foundation and both side banks curtain grouting during the design and construction,and it also states the requirements and results after the grouting.