Multi-factor method for rapidly evaluating soil corrosivity

Abstract

The invention discloses a multi-factor method for rapidly evaluating soil corrosivity. Establishment of an evaluation criterion comprises the following steps of: acquiring information of different soil samples in a region, screening key factors influencing soil corrosivity from multiple soil corrosivity factors by applying a factor analysis method, and judging the soil corrosivity grade by applying a fuzzy cluster analysis method. The invention provides a multi-factor soil corrosivity evaluating method of combining the factor analysis method and the fuzzy cluster analysis method, and the workload required for evaluating the soil corrosivity and the time required for evaluation can be greatly reduced, and the evaluation result is more approximate to the actual result and is more scientific, and a novel method is provided for deeply researching the relation between soil corrosivity factors and accusatively and rapidly evaluating the soil corrosivity.

Description

technical field [0001] The invention belongs to the technical field of corrosion, in particular, the invention relates to a multi-factor method for soil corrosion evaluation. Background technique [0002] Corrosion of the metal material of the substation grounding grid in the soil environment has brought great losses to the construction of the substation. If the grounding grid is severely corroded, the thermal stability requirements cannot be met during operation, and short circuits are prone to cause ground grid burnout, ground potential rise, and high voltage. Breaking into the secondary circuit and other accidents. The large-scale power outage accidents caused by grid corrosion in the United States have caused governments and power companies all over the world to attach great importance to grid corrosion protection. Accurate evaluation of soil corrosivity can provide correct guidance for the construction and maintenance of substations, so evaluating soil corrosivity is a...

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Problems solved by technology

[0004] Looking at the research status of soil corrosivity evaluation, there is a lack of effective methods for soil corrosivity evaluation. First of all, from the perspective of soil corrosivity evaluation indicators, there is no specific research on what factors should be used to evaluate soil corrosivity. Judging by a single indicator is to include all indicators, which has a certain degree of blindness, resulting in two problems. One is that the evaluation is not accurate enough but convenient, and the other is that the evaluation is accurate but not suitable for implementation. Therefore, it is necessary to improve the soil The accuracy of corrosion evaluation also needs to screen the indicators that affect soil corrosion, obtain key factors for evaluation, and verify the evaluation results of soil corrosion through corrosion acceleration tests

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