土坝混凝土防渗墙造孔坝体坍塌后松散地层的处理

作者：赵良恒 马平均

单位：河北省水利工程局 河北省水利工程局 河北石家庄　050021   河北石家庄　050021

关键词：防渗墙造孔  坝体坍塌  旋喷灌浆  振冲碎石桩  基岩堵漏灌浆桩

分类号：TV223.42

出版年,卷(期):页码：2004,28(1):36-38

摘要：

在土坝(堤)混凝土防渗墙造孔过程中,因槽孔突然、大量而剧烈地漏浆造成坝体坍塌,坍塌后采用了高压旋喷灌浆和振冲碎石桩并均结合基岩堵漏灌浆的方法。实践证明,两种方法均有效,但前一种方法效果较好,即使坝体得到充填,又使坝基得到加固,起到防渗堵漏的作用。

The earth dam colapsed which caused by the sudden,huge and violent leakage of grout during the boreholing operations for the erection of concrete continuous cutoff walls in the earth dam.The methods of high pressure jet grouting and vibro-replacement stone column,both of them in combination with the grouting to stop leakage in base rock,were performed.The results showed that both methods are effective,the former is better.It plays a role in seepage control,not only filling dam body,but also consolidating the base rock.

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