It also proposes an empirical formula for computing the relative hydraulic head at downstream of the grout curtain for infinitely deep homogeneous foundation.
并建立了均质无限深坝基帷幕后的相对水头值的经验公式。
To control foundation seepage and exit gradient, a plastic concrete cut-off wall, a grout curtain, and a set of downstream pressure relief Wells are incorporated in the design.
为了控制基础渗流和出逸坡降，设计采用了塑性混凝土防渗墙、帷幕灌浆以及在下游增设一套减压井相结合的方案。
In order to appraise the quality testing of grout curtain, digital borehole camera technology is applied to three boreholes of the grouting gallery no. 3 in Xiaolangdi Water Control Project.
为了评价帷幕灌浆效果，将数字钻孔摄像技术应用到小浪底水利枢纽3号灌浆洞3个灌浆质量检查孔中。
Generally, chemical interactions occurred between foundation rock (including grout curtain) and ground water are the main reason of many time-related engineering problems occurred in dam foundation.
坝基岩体(包括防渗帷幕)与其中地下水水溶液之间发生的化学作用是坝基晚期出现一系列病态问题最重要的原因之一。
A better method for calculation of water cut-off rate and evaluation of curtain grout effect was proposed.
提出了一种能较好地计算堵水率，评价帷幕注浆效果的方法。
When the bore hole-top-enclosed grouting method is used to conduct high-pressure curtain grouting, shallow weathered broken rock is easy to be split, resulting in excessive grout loss.
采用孔口封闭灌浆法进行高压帷幕灌浆时，对于浅层风化破碎岩体易产生多次劈裂而流失过多浆液造成浪费。
When the bore hole-top-enclosed grouting method is used to conduct high-pressure curtain grouting, shallow weathered broken rock is easy to be split, resulting in excessive grout loss.
采用孔口封闭灌浆法进行高压帷幕灌浆时，对于浅层风化破碎岩体易产生多次劈裂而流失过多浆液造成浪费。
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