介绍用于预测河道疏浚施工活动对周围水体悬浮物质量浓度影响的数学模型.针对衰减模型预测方法存在的不足,提出基于泥沙运动方程的预测模型,并将该模型运用于工程实践.采用泥沙模型对深圳经济特区罗芳村附近施工时深圳河不同工况(雨季、旱季)的悬浮物质量浓度沿程分布进行模拟,结果表明其能够反映泥沙运动的真实情形.该模型已运用于第4期深圳河治理工程的环境影响评价中,效果较好.%A mathematical model for predicting the impact of river dredging projects on the concentration of suspended substance (SS) was introduced. With regard to the shortcomings in prediction by use of the attenuation model, a prediction model based on sediment motion equations was proposed. The proposed model was employed to simulate the impact of dredging activities in Luofang Village of Shenzhen Special Economic Zone on the concentration profiles of SS under different working conditions (rainy season and dry season). The results indicate that this model can reflect the real state of motion of sediment particles. It has been used in the environment impact assessment of the forth stage of training project of Shenzhen River, and satisfactory efficiency has been achieved.
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