宜兴抽水蓄能电站地下厂房区酸性水的分布及其潜在影响研究

Study on Distribution of Acid Water in Underground Powerhouse of Yixing Pumped-storage Power Station and Its Potential Effect

酸性渗漏水会对地下洞室混凝土的耐久性产生不利影响。该文以宜兴抽水蓄能电站为例,根据不同时期的水质化验资料,采用统计分析方法,分析了地下厂房区酸性渗漏水的时空分布特征。结果表明,不同时期区内酸性渗漏水均呈局部分布,且呈现一定的时空变化。近年来转为主要出现在上层排水廊道,且呈现显著的酸性,而在高程较低的中、下层廊道则呈现了一定的弱化趋势。最后,对此类酸性水的潜在影响进行了评价。

The acid leakage water will have an adverse effect on the durability of underground cavern concretes. In this paper,taking Yixing pumped-storage power station as an example,the temporal and spatial distribution characteristics of acid leakage water in underground powerhouse area is analysed based on the statistical analysis method according to the data of water quality test in different periods. The results show that the acid leakage water in the area in different periods presents local distribution,and it presents a certain temporal and spatial variation. In recent years,the main trend appears in the upper drainage corridor,and it shows significant acidity. While in the middle level and the lower drainage corridor present a certain weakening trend. Finally,the potential impact of this kind of acid water is evaluated.