南水北调中线陶岔引水渠首加高扩建枢纽设计

陶岔枢纽是南水北调中线工程的渠首和取水枢纽，为满足调水需要，必须将已建初期工程加高扩建。加高扩建枢纽建筑物的布置自左至右为左岸非溢流坝段、进水闸坝段、连接坝段、预留电站进水口坝段、右岸非溢流坝段，该方案较好地利用了初期工程的进水闸，预留电站进水口坝段可为适时建设电站厂房提供条件，增设坝内廊道和防渗帷幕，可提高枢纽运行安全性。

Design for expanding Taocha water diversion structure of the Middle Route Project for S-N Water Transfer

Taocha project is the canal headworks of the Middle-Route Projectfor South-to-North Water Transfer. In order to meet requirements for the water transfer, the completed first-phase works should be heightened and extended. The extension works is composed of the left non-overflow section, the intake sluice section, the connecting section, the reserved powerplant intake section and the right non-overflow section. This layout scheme makes good use of the intake sluice completed in the first phase. The reserved powerplant intake section can provide favourable conditions for constructing the powerhouse in due time. The gallery and the seepage proof curtain to be provided respectively in and under the dam can increase the safety of the projects operation.