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针对新疆盖孜河塔什米里克弯道式引水枢纽工程上下游泥沙淤积及冲沙过程中大量推移质泥沙磨蚀建筑物的问题,运用CCHE2D软件构建了塔什米里克引水枢纽工程平面二维水沙运动模型,据此研究了泥沙输移情况及其颗粒分布规律,并对模型进行了验证。模拟结果表明,河床推移质自上而下输移过程粒径分布呈上粗下细的分布规律、推移质单宽输沙率与上游来流量呈正相关性;同时针对引水口的泥沙淤积问题,计算并提出“间歇冲沙”的闸门优化运行方式,有效降低了河床泥沙淤积量,为解决类似引水枢纽工程泥沙问题提供了参考。
Aiming at the problems of sediment deposition in the upper and lower reaches of the Tashilike bend-type water diversion project in Gaizi River, and a large amount of sediment erosion and erosion in the sediment flushing process, the CSPE2D software was used to construct the Tashililike Water Diversion Project Based on this, the sediment transport and particle distribution are studied, and the model is validated. The simulation results show that the particle size distribution of the bed mass transfer process from top to bottom is coarse and fine, and the single sediment transport rate is positively correlated with the upstream flow rate. Meanwhile, the sediment deposition problem , Calculated and proposed “intermittent flushing ” gate optimal operation mode, effectively reducing sediment deposition in the riverbed, to provide a reference for solving the problem of sediment in similar water diversion project.