砂土地层中高压旋喷和摆喷防渗效果检验分析研究.pdf
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第4卷第4期 地下空间与工程学报 V01.4
ChineseJournalof and
2008年8月 Underground
SpaceEngineering Aug.2008
砂土地层中高压旋喷和摆喷防渗效果检验分析‘
郑全明
(山东正元建设工程有限责任公司,济南250014)
摘要:通过某工程的防渗围井试验,介绍了高压旋喷和高压摆喷围井防渗效果的检验方
法,分析了围井前后渗透系数变化,比较了高压旋喷和高压摆喷两种工艺围井的防渗效果的差
异,得出了两种工艺的围井防渗效果均能满足要求,且高压旋喷稍优于高压摆喷的结论。
关键词:高压旋喷;高压摆喷;抽水试验;渗透系数
中图分类号:TU413文献标识码:A
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ZHENG
Quan—ming
250014
(ShanDongZhengYuanEngineeringCo删-JinanP.尼China)
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Abstract:Based
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Keywords:highpressurerotarygrouting;hishpressureinjectinggrouting;pumpingtest;coefficientpermea-
bility
1 引言 2场地的工程条件
众所周知,高压旋喷和高压摆喷是高压喷射防 根据相关资料,试验场地地层主要由第四系粉
渗墙中两种最常见的施工工艺形式,对于两种工艺 细砂
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