论文部分内容阅读
上马蒂水电站位于尼泊尔西部马蒂河上,河道来水量悬殊,水位变化较大,常年来流量及更小流量情况下取水极其困难.马蒂河属于多沙河流,且工程河段宽浅、坡陡,加剧了河道推移质泥沙运动.为了解决不同工况下电站取水、防沙问题,试验研究中,在电站首部枢纽上游布置取水口、引水渠、锁坝等建筑物,并加高溢流堰前隔水墙的高程.同时,在沉沙池内增设整流格栅后,悬移质分组沉降率得到提高,满足水轮机过沙要求.这种“逆向引水、正面排沙”的工程布置方式为解决山区多沙河流取水防沙问题提供了一种新的途径.
Upper Matty Hydropower Station is located on the Mathieu River in the western part of Nepal. The water supply of the river is poor and its water level varies greatly. It is extremely difficult to take water from the year to the year when the flow rate is smaller and the flow rate is lower. , Exacerbated the river sediment movement.In order to solve the problem of water intake and sediment control of power station in different working conditions, in the experimental study, water intake, diversion canal and lock dam are arranged in the upstream of the first hub of the power station, The elevation of the barrier wall before the weir, meanwhile, the additional settlement grille in the desilting basin improves the subsidence rate of the suspended matter mass to meet the requirements of the turbine passing through the sand. The method provides a new way to solve the problem of taking water and preventing sand in the Dousha River in mountain area.