混凝土防渗墙穿坝下涵管施工方案探讨  

Construction scheme of concrete cutoff wall crossing culvert pipe under dam

作　　者：赫振平 

机构地区：[1]山西省大同市册田水库管理局,大同037300

出　　处：《中国水利》2013年第12期15-17,共3页China Water Resources

摘　　要：混凝土防渗墙作为一种有效、安全、可靠的防渗手段,在土石坝及堤防的除险加固工程中应用越来越广泛。但是由于防渗墙采用后施工法,将不可避免地遇到防渗墙穿越坝下涵管的问题。目前,这方面的研究工作还不多见。如果防渗墙与坝下涵管交接处理不当势必会对水库的渗透稳定性产生影响,甚至会威胁整个工程的安全。因此,对沉井、高喷墙、上游导排、封堵等四种施工方案进行分析,以期对水利工程防渗墙施工中的同类问题提供参考。Concrete cutoff wall is an effective, safe and reliable means of seepage prevention and widely used for strengthening of earth-rockfill dam and embankment. However, concrete cutoff wall crossing the under-dam culvert pipe cannot he avoided as post-construction method is adopted. At present, researches on this are rare. If the joint of cutoff wall and culvert pipe are not properly treated, it will certainly have negative impact on the stability of reservoir. Thus, construction methods of sunk well, jet grouting cutoff wall, upstream diversion and enclosing are compared, so that it can provide reference for solving similar problems during the construction of concrete cutoff wall.

关 键 词：混凝土防渗墙 坝下涵管 除险加固 

分 类 号：TV543.8[水利工程—水利水电工程]