户宋河电站大坝施工介绍

An Introduction To Dam Construction of The Husonghe Hydropower Station

户宋河电站大坝分主坝和副坝，都是均质土坝，主坝高４５ｍ，副坝高１８ｍ，主坝坝体内设“Ｌ”型排水体。大坝工程１９９３年７月１日开工，１９９６年１０月２２日水库下闸蓄水，总的工期四年零三个月。在施工过程中，注意土料的开采，不合格的土料坚决不要。上坝时每层土的填筑厚度，碾压遍数，以及土料的物理力学指标，均严格控制。土料的最优含水量掌握在１４．２％～２４．４％，最大干密度在１．５８～１．７８ｇ／之间，以保证土坝的施工质量。

The dam complex of the Husonghe Hydropower Project is composed of a homogeneous earth main dam,45m high and a saddle dam, 18m high.The main dam emdankment is provided with a L_shaped drainage system.The construction of the dam complex started on July 1,1993 and impounding of the reservoir started in October 22,1996.The total construction period of the project is 3 years and 4 months. During construction special attention was paid to borrowing of earth material, unqualified earth material was firmly rejected, and the thickness of each layer of earth placement,number of roller passes and the physical and mechanical properties of the earth material were all under strict control. The optimum moisture content was controlled at 14.2%_24.4% and the max. dry density at 1.58g/_1.78 in order to ensure the construction quality.