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溧阳县沙河水库灌区,总面积104平方公里,可耕地面积10万亩。灌区境内地形复杂,大部份为丘陵、平原,少部份为圩区。为了加强用水管理,努力扩大工程效益,该灌区在健全灌排系统的基础上,狠抓了建筑物配套,试制成功了楔形止水小闸门和量水设备自记水位计,配合一些其他措施,对实行计划用水,按方收费,起到了比较显著的效果。原设计灌溉面积7.23万亩,现实灌9.05万亩,扩大效益25%。现将本灌区有关节水的三项设施简介如下:
Liyang County Shahe Irrigation District, a total area of 104 square kilometers, 100000 acres of arable land. The terrain in the irrigated area is complicated, most of them are hills and plains, while the less part is the polder area. In order to strengthen water management and strive to expand project benefits, the irrigation district, on the basis of a sound irrigation and drainage system, paid close attention to building facilities. The wedge-shaped water-stop small gate and the self-metered water level gauge for water metering equipment were successfully trial-produced. With some other measures, The implementation of the program water, according to the party charges, played a more significant effect. The original design of irrigation area of 72300 acres, the actual irrigation 9.05 mu, expand the benefits of 25%. Now the irrigation area of water-saving three facilities are as follows: