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1 工程概况老虎洞水库位于郏县城西北15km 的黄道乡境内,地处淮河流域沙颍河水系北汝河支流青龙河上游,控制流域面积43.3km~2。大坝为均质土坝,总库容2027万 m~3,是一座以防洪、灌溉为主,兼顾水产养殖、城镇供水和旅游等综合利用的中型水库。水库始建于1958年3月,1959年6月竣工。由于历史原因,坝体建筑质量差且无防渗体系。自1959年建成后,每当出现较高水位时大坝就出现严重裂缝,而这些水位还远没有达到设计水位,防浪墙也出现了不同程度的裂缝。分析大坝出现裂缝的原因,主要是坝体浸水产生的不均匀沉降和大坝256.0m以上土料质量差所造成的。
1 Project Overview Tiger Cave Reservoir is located in the town of Huangdao, 15km northwest of Juxian County. It is located in the upper reaches of Qinglonghe, a tributary of the North Ru River in the Shaying River System in the Huaihe River Basin, with a controlled drainage area of 43.3km ~ 2. The dam is a homogeneous earth dam with a total storage capacity of 20.27 million m 3. It is a medium-sized reservoir that mainly uses flood control and irrigation as well as aquaculture, urban water supply and tourism. The reservoir was built in March 1958 and completed in June 1959. Due to historical reasons, poor dam construction quality and no anti-seepage system. Since its completion in 1959, serious cracks have occurred in the dams whenever higher water levels occur, and these water levels are far from the design water level. Cracks in the wave walls have also been observed to some extent. Analysis of the causes of cracks in the dam is mainly caused by the uneven settlement of the dam body and the poor quality of the dam material above 256.0m.