论文部分内容阅读
一、引言 陈村水电站拦河大坝为混凝土重力拱坝,最大坝高76.3m,坝顶弧长419m,共分28个坝块(由左至右编号3～30),坝顶高程126.3m。坝体于1958年动工兴建,1962年停工缓建,1968年复工续建,1972年浇筑至原设计坝顶高程125.0m,1978年又加高1.3m,达现高程。1972年初,发现下游坝面高程80～105.5m间分布有较多的水平向裂缝,其中105m高程附近的水平裂缝(下简称105裂缝)规模最大,它不
I. INTRODUCTION The dam of Chencun Hydropower Station is a concrete gravity arch dam with a maximum height of 76.3m and a crest length of 419m. It is divided into 28 blocks (numbered from 3 to 30 from left to right) with a crest elevation of 126.3m . The dam was started construction in 1958, suspended in 1962, and resumed construction in 1968. It was poured to the original design crest elevation of 125.0m in 1972 and increased to 1.3m in 1978 to reach the elevation. At the beginning of 1972, it was found that there were more horizontal cracks distributed between 80 ~ 105.5m in the downstream dam surface, of which the horizontal cracks near 105m elevation (hereinafter referred to as 105 cracks)