三峡永久船闸衬砌式闸墙墙后排水系统设计

Design of Drainage System at the River Lining Wall of the Three Gorges Permanent Shiplock

三峡永久船闸闸室墙采用钢筋混凝土薄衬砌墙结构，可使船闸的混凝土量和造价大幅度地减少。而保证船闸衬砌墙安全的最有效、最经济的手段，是在设置结构锚杆的同时设置墙后排水系统降低渗水压力。经过综合研究，得出以排水管组成的“井”字形排水网方案排水效果最好。

A thin reinforced Concrete lining Wall of the Three Gorges permenent Shiplock is beingadopted and will reduce 1argely the volume and cost of concrete of the shiplock,ensuring the safety of thelining wall, which is the most effective and economic measure. The drainage system will be placed simulta-neously with structural anchored bars insta1led,lessening the seepage pressure. A n # II drainage pipe netformed by drainage pipes is selected with the best drainage result by a comprehensive study-