分区调查法在某核电厂厂前区地下水腐蚀性评价中的应用

场地地下水腐蚀性评价,是岩土工程勘察重要的工作内容。在评价过程中,若不考虑水文地质单元及上部功能分区的影响,仅以某一区域的分析结果代表整个场地,可能会造成整体的评价结果偏高或偏低,导致后续基础设计工程量的浪费,或带来安全隐患。因此,有必要根据场地水文地质特点进行分区调查与评价。以南方某核电厂厂前区地下水腐蚀性评价为例,采用分区调查法对不同区域进行评价,结果显示,不仅可规避安全风险,且能指导设计优化,为后续的基础防腐设计提供具有针对性的设计参数。

Application of Zoning Investigation in Groundwater Corrosively Evaluation of a Nuclear Power Plant

Groundwater corrosively evaluation is an important content in geotechnical engineering investigation,if the influence of hydrogeological unit and upper functional zoning is not considered,only one area’s result represent the whole site in the evaluation,the overall evaluation results to be higher or lower,and that leads to the waste of subsequent foundation design,or security risks.So the zoning evaluation is necessary according to the hydrological characteristics of the site.In this paper,the corrosivity evaluation of groundwater in the front area of a nuclear power plant in South China is taken as an example,evaluating different areas with zoning investigation,The conclusion shows that,it can not only avoid the security risk,but also guiding design optimization,to providing targeted design parameters for the subsequent foundation anti-corrosion design.