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早在60年代初期,在某些防渗墙中已经发现了墙体内部及其边界上夹泥的问题.1969年修建十三陵水库坝基防渗墙时,曾采取了一些减少夹泥的措施.1977年编写的“北京地区防渗墙资料汇编”中,对北京地区防渗墙夹泥的部位、类型和产生原因等进行了探讨.1978年以后的几年里,由于防渗墙夹泥问题而造成的工程事故时有发生.例如西斋堂水库由于防渗墙接缝夹泥和其他一些原因,于水库蓄水后发生了严重的坝体坍境事故.崇各庄水库也由于防渗墙夹泥等原因,先后三次发生了危及坝体安全的坍坑事故.察尔森水库的两道防渗墙都发现有比较严重的夹泥问题.至此防渗墙夹泥问题逐渐
As early as the early 1960s, the problems of muddy clay inside and outside the wall were found in some cutoff walls. Some measures to reduce mudslide have been taken during the construction of the dam foundation cut-off wall of the Ming Tombs Reservoir in 1969 In the “Compilation of Cut-off Wall Information for Beijing Area” prepared in 1977, the site, type and causes of mud-holding mud in Beijing area were discussed. In the years after 1978, For example, the West Zhaitang reservoir due to impervious wall seams and other reasons, the dam in the reservoir after the occurrence of a serious dam collapses. Chonggezhuang Reservoir also due to the anti Permeability wall with mud and other reasons, there have been three times endanger the safety of the collapse of the collapse of the dam. Two seepage walls of the Chalson Reservoir were found to have more serious mud problems.