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一、工程概况上游水库是我县一座中型工程,属抚河支流,集雨面积二十一平方公里。大坝为均质土坝,最大坝高22米,迎水坡为1:3.5,用石块护坡,背水坡为1:3和1:2.5,用草皮复盖。筑坝土料,以亚粘土为主,坝顶部位夹有大量山坡风化残积亚砂土,坝基用截水槽回填亚粘土作防渗处理,大坝两端与节理裂隙发育的变质砂岩山坡衔接。大坝施工期间,对土料含水量未加控制,曾用石硪打夯,控制不严,故施工质量较差,工程于58年8月开工,59年4月建成。
First, the project profile The upper reaches of the reservoir is a medium-sized project in our county, belonging to Fuhe tributaries, rain catchment area of 21 square kilometers. The dam is a homogeneous earth dam with a maximum dam height of 22 meters and a water slope of 1: 3.5. Use stone revetments, backwater slopes of 1: 3 and 1: 2.5 and cover with turf. Dam material is mainly composed of sub-clay. There are a large number of weathered sandy sands in the crest of the dam. The dam foundation is filled with clayey clays for cut-off treatment. Both ends of the dam are connected with the metamorphic sandstone slopes with developed joint fissures. During the construction of the dam, the soil moisture content was not controlled. Once it was rammed with stone grits, the control was not strict, so construction quality was poor. The project started in August 58 and was completed in April 59.