引用本文:徐爱兰,曹志刚,季晓,曾建.二维水流泥沙模型在采砂吹填作业环评中的应用[J].环境监控与预警,2010,2(4):39-43
XU Ai-lan, CAO Zhi-gang, JI Xiao, ZENG Jian.The Application of Two-dimension Flow-sediment Models in Environmental Impact Assessment of Sand Excavation and Hydraulic Filling[J].Environmental Monitoring and Forewarning,2010,2(4):39-43
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二维水流泥沙模型在采砂吹填作业环评中的应用
徐爱兰,曹志刚,季晓,曾建
南通市环境科学研究所,江苏 南通 226006
摘要:
应用基于有限体积法及黎曼近似解的二维水流泥沙模型,在无结构网格上对偏微分方程进行有限体积的积分离散,以苏州港太仓港区庵弄村岸线调整工程为例,预测采砂吹填作业产生的悬砂对长江水体的水环境影响。结果表明,采砂产生的悬砂影响范围较大,但集中在江段中间,对水厂取水口有一定影响。若采取静置等措施,可将吹填作业悬砂产生的水环境影响控制存较小的范围之内。二维泥沙模型对采砂吹填作业施工可能引起水体污染的范用和程度的预测为该类项目环境影响评价的审批提供了科学依据。
关键词:  二维水流泥沙模型  环境影响评价  采砂  吹填
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The Application of Two-dimension Flow-sediment Models in Environmental Impact Assessment of Sand Excavation and Hydraulic Filling
XU Ai-lan, CAO Zhi-gang, JI Xiao, ZENG Jian
Nantong Environmental Science Institute, Nantong, Jiangsu 226006, China
Abstract:
Took the exploitation of the harbor in Taicang city of Jiangsu Province as an example, using a 2-D depth-averaged flow-sediment model based on the finite volume method ( FVM ) with approximate riemann solvers developed in the framework of finite volume method on an unstructured grid, the model can simulate the effect to the waterbody by the sand excavation and hydraulic filling. The result indicated that sand excavation produced great influence, and centralized in the middle of the Changjiang River. The effect of the hydraulic filling can be controlled after stationary treatment. The simulation to the waterbody of the sand excavation and hydraulic filling by two-dimension flow-sediment model provided great gist to be examined and approved by EPA.
Key words:  two-dimension flow-sediment model  Environmental Impact Assessment  sand excavation  hydraulic filling