小型水库除险加固工程溢洪道设计研究

在广西上思县念伦水库溢洪道除险加固设计中，对原破损的溢流面进行凿毛，另铺一层混凝土作底板，让新老混凝土用锚筋连接，联合受力，同时在原溢流面上凿槽铺设纵横塑料透水盲管，以降低底板扬压力。设计较大程度地降低了工程造价，满足了溢洪道的泄洪功能要求，实践证明是行之有效的。

A Study on the Spillway Design of Reinforcement Project for Small Reservoir

During the reinforcement design of spillway for Nianlun reservoir in Shangsi County, Guangxi, the worn overflow surface is hacked, with another layer of concrete. And the new-to-old concrete is connected by anchor bar so that they can jointly bear the pressure and at the same time, the overflow surface is cut a groove with plastic water pipe vertically and horizontally so as to reduce the uplift pressure. The design have been proven effective as it greatly reduces the engineering cost and meets the requirement of the flood-releasing function of spillway.