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区田水库位于肇庆市北岭山,坝体为浆砌石重力坝,坝高48m。建于1971年初,1976年竣工蓄水。从1977年起坝背坡面及坝体两岸接头处大面积出现渗漏,且日趋严重,上、下廓道内除排水孔外,还出现多处渗漏,下廓道内局部出现喷水,在高水位时并有五处流浊水,当库水位达正常高水位225.0m时渗流量达11.96L/s。严重威胁大坝安全。1987年2月中至6月底对坝体进行灌浆处理,经过近三个月高水位观测检查;坝背坡面及二岸坡大面积渗漏已基本消失,上下廓道内的渗漏明显减少或消失,当蓄水位超过正常高水位0.18m时(即225.18m)渗流量只达1.55L/s,达到了设计渗流量小于4.0L/s的要求,效果显著。
Wuda reservoir is located in Zhaoqing City, North Ridge, dam masonry gravity dam, the dam high 48m. Built in early 1971, completed in 1976, water. From 1977 onwards, the dam slope and the joints on both sides of the dam have a large area of leakage, and more and more serious, in addition to the upper and lower drainage channels, there are many leaks, the lower profile of the local emergence of water spray in the High water level and there are five flow of turbid water, when the reservoir water level up to 225.0m normal high seepage flow of 11.96L / s. Serious threat to dam safety. In mid-February 1987 to the end of June, the dam was grouted and subjected to high water level observation and inspection over the past three months. Large-scale seepage on the slope of the back of the dam and on the second bank slope basically disappeared, and the seepage in the upper and lower runways decreased significantly or When the water level exceeds the normal high water level of 0.18m (ie 225.18m) seepage flow of only 1.55L / s, reaching the design seepage flow is less than 4.0L / s requirements, the effect is significant.