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11采夫懒拉(Zervrella)1953—1957年间修建的坝高150m、坝顶长504m的这座等角拱坝的特点是;右岸(至少是表层)的结晶片麻岩较之左岸具有很严重的裂隙.因此.这就不仅在防渗帷幕的水泥需用量上(右岸95kg/m~2,左岸50kg/m~2),而且在地震地质测量的动态变形模量的大小上(右岸18500—27000MN/m~2,左岸45000MN/m~2)有所不同.1960年,在右岸就发现了一些坝段的灌浆接逢张开,8、9号坝段尤为严重.当水位降至+1800m及+1750m的死库容水位时,8、9号坝段不仅出现切向开裂而且出现径向位移,自1960年起,变形不断增大.这样,20年
11 Zervrella Constructed between 1953 and 1957, a 150m-high dam with an isopical arch dam of 504m in length is characterized by severe gneiss formation on the right bank (at least the surface) compared to the left bank Therefore, this is not only the amount of cement required for the seepage curtain (95 kg / m 2 on the right bank and 50 kg / m 2 on the left bank), but also on the magnitude of the dynamic deformation modulus of seismic geology measurement (18500- 27000MN / m ~ 2 and 45000MN / m ~ 2 on the left bank.) In 1960, some grouting joints were discovered on the right bank and the dam sections numbered 8 and 9 were especially serious. When the water level dropped to + 1800m And +750 m of dead storage capacity, 8,9 dam not only appear tangential cracking and radial displacement, deformation has been increasing since 1960. Thus, 20 years