衡水地区某电厂地下水腐蚀性评价问题的研究

由于《岩土工程勘察规范》94版与2001版在地下水腐蚀性评价方面对场地环境类别划分标准的变化,造成了同一场地建设的一、二期电厂的场地环境类别分别为Ⅲ类和Ⅱ类,从而使同一类型的地下水对钢筋混凝土结构的腐蚀等级分别为弱腐蚀和中等腐蚀。为了使两期工程建设标准的一致性,也为了验证新规范的修订对本场地的适用性,专门对此问题进行了实际腐蚀性验证和腐蚀性机理分析,此研究成果不仅对本电厂节约建设投资起到了作用,而且对衡水地区地下水的腐蚀性评价具有普遍的指导意义。

According to the variation of dividing criterion to the place environment category in aspect of ground water corrosion evaluation by 《Code for Investigation of Geotechnical Engineering》 of Version 94 and 2001,the place environment category was divided into Type Ⅲand Type Ⅱduring the construction to the same place in the First and the Second period of the electric station .Thus , the corrosion grade of the same type of ground water to reinforced concrete structure was divided into weak corrosion and medium corrosion .For the consistence of these two periods' engineering construction criterions and the verification of the applicability of the new emendation to this place ,we specially made the practical corrosion verification and analysis of corrosion functional theory. The achievement of this investigation not only saves the construction investment of the electric station, but also has general guiding significance to the ground water corrosion evaluation in Hengshui district.