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本文总结了1981年对葛洲坝枢纽沙砾推移质泥沙(10毫米>d>0.1毫米)的研究成果。介绍了用地质地貌方法研究沙砾推移质矿物组成、粒配、硬度与磨圆度等特性,用岩类矿种分析法进行计算,求得葛洲坝枢纽沙砾推移质数量为854.2万吨/年,与宜昌水文站1973—1979年平均实测推移质862.5万吨基本一致,两者相差仅6.5％。这表明本文提出的计算方法能适用于宽粒配的推移质的数量计算,对于水利建设中没有河段推移质测验资料或测验资料不足的情况,具有实际意义。
This paper summarizes the results of 1981 research on gravel sediment (10 mm> d> 0.1 mm) at Gezhouba Dam. Geological and geomorphological methods were introduced to study the characteristics of mineral composition, grain size, hardness and roundness of gravelly plutons. Geotechnical and geomorphological methods were used to calculate the amount of gravel pluton transported to Gezhouba Dam to 8.542 million tons / year. Yichang Hydrological Station 1973-1979 average measured mass of 8.625 million tons basically the same, a difference of only 6.5%. This indicates that the calculation method proposed in this paper can be applied to the calculation of the mass of pluton with a wide range of grain size. It is of practical significance for the construction of a water conservancy without any riverbed displacement test data or insufficient test data.