广州街口至良口高速公路对水环境影响的评价分析

Assessment and analyses to impacts on water-environment by the project of the expressway from Jiekou to Liangkou in Guangzhou

在对区域水环境现状进行调查分析的基础上,预测了街口至良口高速公路建设工程施工期与运营期对水环境的影响,特别是对流溪河水质的影响程度进行了详细分析。评价和预测结果表明:流溪河水质现状良好,符合相应的水环境功能要求;该工程中两大桥的水下施工分别对下游100和150m范围内水质影响较大,影响属局部短暂性;运营期影响程度较小,通过采取环保措施,对水环境产生的不利影响可以得到减轻或消除。

Based on the investigation and analysis of water quality and water environment situation, the impacts of the project of expressway from Jiekou to Liangkou on water environment were analyzed and predicted. Especially the impacts on Liuxi River had been investigated in detail. By appraising, present quality of Liuxihe was good and met the demand of water environment function. The impact on water environment by the two large bridges in this project is important and was emphatically analyzed. Result shows that the impacted range is within 100m and 150 m downstream respectively. During operation period, negative impact on water-environment could be slight and lightened by adopting some environmental protection measures.