摘要
土坝坝基进行帷幕灌浆时,由于坝基无混凝土盖板,不能进行裂隙冲洗,灌浆压力受到限制,因而灌浆效果有限。采用高压旋喷在坝基建造灌浆盖板,改善了灌浆条件,取得了良好的灌浆效果,并且有效地截断坝基表层的渗漏,减少了坝基的接触冲刷破坏。温峡口水库大坝灌浆试验的成功为坝基无混凝土盖板条件下灌浆和坝基防渗加固处理探索了一条新路子。
During curtain grouting for dam foundation of a earth dam, it is impossible to wash fissures because there is no concrete decking on the dam foundation, thus result of grouting may be limited due to the limitation of grouting pressure. Application of high-pressure rotary grunting in constructing grouting decking on the dam foundation can not only improve the condition of grouting and result in a perfect grouting, but also can prevent seepage of dam foundation surface effectively and reduce damage from scouring to the dam foundation. The successful application of testing in dam grouting of Wenxiakou Reservoir proved to be a new way of grouting under the condition of no concrete decking on the dam foundation, as well as seepage treatment of dam foundation.
出处
《中国水利》
2002年第8期60-61,共2页
China Water Resources
关键词
坝基
高压旋喷
土坝
灌浆盖板
防渗
high-pressure rotary grunting earth dam grouting decking technology
