洛斯特溪坝是一座薄拱坝,原建于1924年,始用于灌溉和发电。由于混凝土施工质量不佳,内含许多孔隙,坝体渗水严重,致使下游面饱水混凝土在冬季的反复冻融作用下,发生了严重的片离现象。应大坝业主的要求,由美国国防海洋工程公司和CARPI公司共同设计了一个由土工薄膜组成的防渗系统,在坝前水下铺设,以阻止库水进入坝体。 Los Strait Dam is a thin arch dam, originally built in 1924, was used for irrigation and power generation. Due to the poor quality of concrete construction, which contains many pores, dam seepage seriously, resulting in the downstream surface of the water-saturated concrete in winter freeze-thaw, the phenomenon of serious flaking. At the request of the owner of the dam, a design system consisting of a geomembrane and a seepage control system was designed jointly by the U.S. National Defense and Ocean Engineering Corporation and CARPI to be laid underwater in front of the dam to prevent reservoir water from entering the dam.