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《Journal of Performance of Constructed Facilities 》杂志刊登“土石坝中心区域的除险加固”
发布时间: 2013-12-13   来源:

《Journal of Performance of Constructed Facilities 》杂志刊登“土石坝中心区域的除险加固”

作  者:Geu-Guwen Yea, Tae-Hyung Kim,, Jae-Hong Kim, Hong-Yeon Kim

刊  物:《Journal of Performance of Constructed Facilities 》,第27卷,第4期(2013年8月)

关键词:土石坝,中心区域,排水口,压实灌浆,渗漏,修复工程

摘  要:本文对受损土石坝中心区域的修复工程进行了详细的研究。研究的相关资料包括坝面调查数据、渗漏检测数据以及钻孔法、灌浆材料、钻孔和灌浆流程。最后选择一种压实灌浆法进行大坝修复,同时评估了该方法在减少并防止渗漏和沉降的作用。通过压实灌浆,空得到填充隙,裂缝被闭合,中心处扰动的土体得到了压实,松动以及空隙区得到合适的填充,减少了渗漏量。最后通过对灌浆压力和内部注入量的评估及其对大坝渗漏率的外部检测验证了压实灌浆的效果。通过灌浆压力,注入量和外部检测数据可以预测大坝内部结构变化,其中包括大坝中心区域渗漏通道的减少和闭合。

Rehabilitation of the Core Zone of an Earth-Fill Dam

Authors: Geu-Guwen Yea, Tae-Hyung Kim,, Jae-Hong Kim, Hong-Yeon Kim

Journal: Journal of Performance of Constructed Facilities, Volume 27, Issue 4 (August 2013)

Key words: Earth-fill dam, Core zone, Sinkhole, Compaction grouting , Leakage , Remediation work

Abstract: This paper provides a detailed study of remediation work on the core zone of a damaged earth-fill dam. The relevant material includes a review of the dam surface survey data, leakage monitoring data, drilling method, grouting material, and drilling and grouting procedure. A compaction grouting method was selected as the remediation technique. In addition, the reduction and prevention of leakage and settlement were assessed. Compaction grouting was successful for filling voids, closing channels, and compacting the disturbed core soils. The loose or voided zones were properly filled, and the leakage was reduced after compaction grouting. Verification of the compaction grouting work was performed by evaluating the grouting pressures and volumes injected internally and by monitoring the dam leakage rate and tracer externally. All of these factors provide a good indication of changes inside the core of the dam, including reduction or closure of the leakage channels in the dam core.

原文链接:http://ascelibrary.org/doi/abs/10.1061/%28ASCE%29CF.1943-5509.0000335

翻译:翟洁   审稿:安鹏
 
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