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本项目是国际原子能机构资助的技术合作项目。在长江口北槽航道西北侧的抛泥区进行放射性示踪沙试验来观测泥沙运动的方向,从而计算抛泥区泥沙对航道挖槽的回淤量,确定此抛泥区今后能否继续使用。投示踪沙前先采集了30个天然沙样作天然放射性本底测量,并用中子活化分析法测定泥沙的元素成份。投放示踪沙后,除现场拖测外又
This project is a technical cooperation project funded by the International Atomic Energy Agency. Radioactive tracer sand test was conducted in the sediment disposal area on the northwestern side of the north channel of the Changjiang Estuary to observe the direction of sediment movement so as to calculate the amount of sediment backfilled on the channel by the sediment in the sediment disposal area. continue to use. Thirty natural sand samples were collected for natural radioactive background measurement before sediment tracing, and elements of sediment were determined by neutron activation analysis. Putting tracer sand, in addition to dragging the scene outside