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岷江上游映秀湾水电站,曾于1966年建成了一个规模较大的人工沙系统,第一次在我国采用捧磨机生产人工砂。水电总局组织的人工砂研究组,配合该系统的设计和施工,对棒磨机制砂进行了一系列的试验研究工作,并在系统投产前研制成了细度模数的快速测定法,为生产稳定优质的人工砂,起了重要的作用。映秀湾的速测法,测定一组砂样的细度模数只要5～6分钟时间,精度基本满足要求。“日本大坝”杂志在1976年第一期公布了他们创制的速测法,基本原理和我们的类似,所需时间大约15分钟,而按常规的检测法,则需要1～1.5小时。映秀湾速测法虽在15年前就已创制应用,它在人工砂生产控制中有相当的实用价
The Yingxiuwan Hydropower Station on the upper reaches of the Minjiang River had a large-scale artificial sand system built in 1966 and the first production of artificial sand by using a hand mill in China. With the design and construction of this system, a series of experimental research work has been carried out on the sand making process of the rod mill and a rapid determination method of the fineness modulus has been developed before the system is put into production. Stable quality artificial sand, played an important role. Yingxiu Bay rapid test method, the determination of a group of sand fineness modulus as long as 5 to 6 minutes time, accuracy basically meet the requirements. Japan Dam announced the rapid test method they created in 1976, the rationale being similar to ours, which takes about 15 minutes, compared with 1 to 1.5 hours for routine tests. Although Yingxiu Bay rapid test method has been created and applied 15 years ago, it has a considerable practical value in the artificial sand production control