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一、概况坑口水库地处浙江东南高山区,年平均气温为16℃,最高温度38℃,最低温度-9℃;集雨面积9平方公里,年平均降雨量1700毫米;水库总库容235万立米,有效库容185万立米。坝址为凝灰熔岩,质地较好,基岩裸露,地质情况比较简单,坝基防渗不需要作专门处理。由于坝址附近缺乏土料和砂石料,经技术经济比较,决定采用沥青混凝土斜墙堆石坝。主坝为堆石坝,高37米,顶长106米,顶宽4米;上游坡1:1.7,下游坡平均1:1.4;坝
I. Overview Hang Hau Reservoir is located in southeastern Zhejiang high mountainous area, the annual average temperature of 16 ℃, the maximum temperature of 38 ℃, the lowest temperature of -9 ℃; rain catchment area of 9 square kilometers, the average annual rainfall of 1700 mm; total reservoir capacity of 2.35 million cubic meters , Effective storage capacity of 1.85 million cubic meters. The dam site is tuff lava with good texture, exposed bedrock and relatively simple geological conditions. Seepage control of dam foundation does not need special treatment. Due to the lack of soil material and aggregate near the dam site, the technical and economic comparison decided to adopt asphalt concrete inclined wall rockfill dam. The main dam is a rockfill dam, 37 meters high, with a top length of 106 meters and a top width of 4 meters. The upstream slope is 1: 1.7 and the downstream slope is 1: 1.4 on average.