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七峪水库位于西峡县丹水镇西北部七峪村以上1.5 km处的丹水河上,属长江流域白河水系湍河支流。该水库于1958年3月动工兴建,1969年5月基本竣工,是一座以防洪、灌溉为主,兼顾水产养殖等综合利用的中型水利枢纽工程。大坝坝基座于强透水的第四系全新统砾砂层上,清基不彻底,曾出现管涌翻砂等现象,增建粘土斜墙截水槽后,渗流基本稳定;台地段及两坝肩座于强风化的基岩上,岩体裂隙发育,坝坡散浸、渗漏。工程对大坝桩号0+011~0+388段采用塑性混凝土防渗墙处理,可以将坝体、坝基的渗漏进行统一治理,施工时可以一次开槽直抵坝基相对不透水层,连续浇筑一次成墙,施工方便,治理效果好。
Qiyu Reservoir is located in Danshui River 1.5 km above Qiyu Village, northwest of Dan Shui Town, Xixia County, belonging to the tributary of the Turke River of the Bahe River system in the Yangtze River basin. The reservoir started construction in March 1958 and was basically completed in May 1969. It is a medium-sized water conservancy hub project that focuses on flood control and irrigation and combines aquaculture and other comprehensive utilization. The foundation of the dam dam is located on the permeable Quaternary Holocene gravel sand layer. The clear base is not complete, and phenomena such as tube flipping and sand inversion have occurred. After the clay clapboard cutoff trench is built, seepage basically stabilizes. The platform section and the two abutments Block in the strong weathered bedrock, rock mass fissures, dam slope dipping, leakage. The project uses plastic concrete impervious wall to deal with the pile number 0 + 011 ~ 0 + 388 of the dam, which can control the seepage of the dam body and dam foundation uniformly. Once the construction is completed, it can be grooved directly to the impervious layer of the dam foundation and continuous pouring Once into the wall, construction convenience, good governance.