变电站土壤类型特点及理化性质分析

Analysis of Substation Soil Type Characteristics and Physicochemical Properties

为了了解变电站土壤类型特点和物理化学性质,对黑龙江省各地市区域内37个变电站土样和20个非变电站土样进行了采集,分析了土壤对变电站接地网腐蚀性能影响较大的理化项目,指出了不同类型土壤的酸碱性、含水量、有机质含量、总孔隙度、电阻率和可溶性盐含量等理化性质的规律,得到了土壤理化性质对接地网腐蚀的影响因素和作用机理。分析结果表明,黑龙江省行政区域内各类土壤的容重和总孔隙率没有明显的规律性,主要与土壤的形成过程有关;土壤的电阻率与土质有密切的关系,应结合p H值和氧化还原电位综合进行评价;土壤对接地网的腐蚀特性应结合接地网在土壤环境中的各种因素进行综合判断。

In order to know the soil type characteristics and physicochemical properties of the substations,37 substation soil samples and 20 non-substation soil samples from various regions of Heilongjiang Province are collected.The physicochemical effects of soil on the corrosion performance of substation grounding grids are analyzed.The project points out different types of soils in the regularity of physicochemical properties from acidity and alkalinity,water content,organic matter content,total porosity,resistivity and soluble salt content.The analysis results show that the bulk density and total porosity of all types of soil in the administrative region of Heilongjiang Province have no obvious regularities,which is mainly related to the formation process of the soil.The resistivity of the soil is closely related to the soil quality and it should be estimated by combining pH value and redox.Soil erosion characteristics to grounding grid should be judged combining with the ground network in the soil environment of a various comprehensive factors.