论文部分内容阅读
大潭水坝位于马山县永州河中上游大潭封闭谷地河段上。坝高11米,设计引水流量1.5米~3/秒(图1)。筑坝前未经勘测,将坝址选定在一个非正常狭窄的河段上。开挖以后虽发现坝基溶洞发育,岩石破碎,坝基条件很差,但还是不作任何处理,便在支离破碎的岩石之上砌筑水坝。建成后引水灌溉时,发现坝基与坝肩大量漏水,坝基右端1号出水洞漏水量达0.8～1.0米~3/秒,坝肩右侧2号出水洞绕坝渗漏量也在0.5米~3/秒以上(图2)。
The Tai Tam dam is located in the upper reaches of the Yongzhou River in Mashan County, close to the Da Tan River valley. The dam is 11 meters high and has a designed water diversion flow of 1.5 meters to 3 seconds (Figure 1). Undetected before the dam, the dam site selected in an abnormal narrow section of the river. After excavation, it was found that the foundation of the cave was developed, the rock was broken, and the condition of the dam foundation was very poor. However, without any treatment, the dam was built above the fragmented rock. After the completion of the irrigation project, it was found that there was a large amount of water leakage at the dam foundation and abutment shoulder. The water leakage on the right end of dam foundation No. 1 was 0.8 ~ 1.0 m ~ 3 / s, 3 / s or more (Figure 2).