A Method of Establishing Soil Corrosion Prediction Model

Abstract

The invention discloses a method for establishing a soil corrosion prediction model, comprising the following steps: step 1: selecting a soil area with the same soil quality as target soil, sampling the target soil and analyzing the physical and chemical properties of the target soil; step 2: preparing simulated soil, Corrosion experiments of metal materials were carried out in the simulated soil, and the corrosion experiments of metal materials in simulated soils were called Experiment A; Step 3: Distinguish uniform corrosion patterns and non-uniform corrosion patterns according to the results of the metal material corrosion test in Step 2; Step 4: To For the corrosion test results of metal materials in the form of uniform corrosion, the models are screened and corrected by linear regression and nonlinear regression methods to establish a comprehensive model of all main factors; Step 5: For non-uniform corrosion forms, establish a single factor analysis by establishing a single factor A set of soil corrosion prediction models with high accuracy, strong real-time evaluation properties and certain universality are established.

Description

technical field [0001] The invention relates to the field of soil corrosion evaluation, and specifically provides a method for establishing a soil corrosion prediction model. Background technique [0002] At present, the basic work of soil corrosion evaluation mainly includes single index method and multi-index method. Due to the singleness of collected data, single index method often leads to misjudgment during evaluation, so it can only be applied in a certain field, and there are gradually eliminated methods. Trend: Compared with the single index method, the multiple index method has comprehensive data, high evaluation accuracy and strong persuasiveness. It is currently the most widely used evaluation method. However, the defects of the multiple index method are as follows: (1) The model is not universal; the soil system to be evaluated is complex, and the corrosion laws of metals of different materials in soil are not clear, such as the degree of data collection for the ...

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Problems solved by technology

However, the defects of the multiple index method are as follows: (1) The model is not universal; the soil system to be evaluated is complex, and the corrosion laws of metals of different materials in soil are not clear, such as the degree of data collection for the same soil quality in different regions Insufficient, but in order to achieve the effect of accurate evaluation, there are often one model for one type of soil in one area; (2) The accuracy of the model is not enough; the current multi-index method for soil corrosion models are all based on short-term materials Based on the data from corrosion experiments

(3) The corrosion degree of underground structures (grounding grids, etc.) cannot be analyzed in real time; multiple indicators include all the physical and chemical properties of the soil, because the collection method and quantity limit the effectiveness of corrosion evaluation

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