介绍了合溪水库工程的概况，选用坝型为粘土心墙砂砾石坝，根据粘土和砂砾石料场的颗分曲线，对反滤料进行了设计。
Hexi Reservoir Project, applying filter design, is introduced, which is made up of clay central core and sandy gravel dam according to the gradation curve of clay and gravel.
拦河主坝坝壳以当地材料砂砾石为主，防渗心墙比较了粘土心墙、沥青混凝土心墙和斜墙型式。
The material of the main dam shuck is mainly the local sandy gravel. The clay core and the asphalt concrete core were compared in the choosing of seepage prevention type.
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