三峡一期围堰防渗墙施工取得新进展长江葛洲坝工程局基础总公司经过３２天苦战，于６月１８日下午７时顺利完成一期围堰下游横向段９个槽段合为一个槽段的防渗墙造孔和浇筑工作，为防渗墙的快速施工积累了经验。该槽段长４０．６６ｍ，宽０．８ｍ，由４１孔组成，最大孔深... New progress was made in the construction of the anti-seepage wall for the first-stage cofferdam of the Three Gorges Project. The foundation head office of the Gezhouba Engineering Bureau of the Yangtze River made a hard-fought 32 days and successfully completed 9 slots at the lower reaches of the downstream cofferdams at 7:00 pm on June 18 to form a trough section Impermeable wall hole and pouring work, for the rapid construction of impervious wall has accumulated experience. The groove length 40.66m, width 0.8m, composed of 41 holes, the maximum hole depth ...