利用放射性示踪砂研究大连港黄白咀抛泥区的泥沙运动

Study on the Sand Movement by Use of Radiating Tracer Sand for the Soil-dumping District at Huangbeizhui in Port of Dalian

本次试验利用放射性示踪砂技术,模拟现场实际抛泥方法,跟踪测量悬浮泥沙和底沙运动,研究在黄白咀抛泥区因疏浚抛泥而产生的泥土扩散和运移规律。根据试验实测资料分析,建议黄白咀抛泥区可以在不影响水产养殖和游泳的季节里有控制地开放使用。

By utilizing the technology of modelled radiating tracer sand,a test was carried out in modelling the on-site soil-dumping method,tracing the suspension load and the bed-load movement,and then made investigation on the rule of diffusion and movement of soil grains dumped from dredgers at Huangbeizhui. Based on the test results, the authors suggest that, in the fishing and swimming seasons the soil dumping by dredgers might be openly carried out undercontrol, that is, trying to avoid danger to the fishing and swimming.