【摘要】 作者利用已广泛应用于农田灌溉的U型槽渠的经验 ,以秦岭火电厂低凹地改造工程为研究对象 ,充分借鉴前人对明渠高含沙水流挟沙力的研究成果 ,结合水槽试验研究 ,提出了合理的U型断面尺寸及比降 ,确保了电厂的安全运行。同时 ,选用了多组粉煤灰和天然沙试验资料 ,点绘各种形式的挟沙力关系曲线 ,为渡槽输送粉煤灰设计和试验提供了依据 ,可供同类工程问题参考。更多还原

【Abstract】 Based on previous research on sediment-carrying capacity for hyperconcentrated flow in open channels and flume tests, the sediment-carrying capacity of flow with fly ash in U-type channels is investigated. By taking the re-construction project in Qingling electric thermo-power plant as an example, the optimal sectional size and slope of U-type channels are obtained. Also, the sediment-carrying capacity for U-type channels is given for various size gradations of fly ash and natural sediment. Results provide a reference for the design in similar projects.更多还原