Application of new construction method in cutoff wall construction of Wusijiang Reservoir
For some plastic concrete cutoff walls constructed by two-step method,longitudinal cracks are prone to oc-cur between the cutoff wall and the dam soil in the deep groove of the middle of dam.Some projects even have seen cracks with a width up to 20cm.In order to solve this problem,based on a summarization of the experience of multi-ple projects,during the construction of plastic concrete cutoff wall for the main dam of Wusijiang Reservoir,the new construction method of"segmented slotting and single-sided walking"was adopted for trial,which effectively avoid that in the course of slotted hole soil excavation or slotted hole concrete pouring,the construction distance between adjacent two phases of slotted holes is too close,which may cause the dam body is damaged by splitting or is pene-trated by concrete,resulting in slotted hole connections.
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维普
