Curtain grouting effect fuzzy comprehensive evaluation method based on cloud model

Abstract

The invention discloses a curtain grouting effect fuzzy comprehensive evaluation method based on a cloud model. The method comprises the following steps: (1) constructing an evaluation index system according to the target problem influence factors; according to the influence factors of the curtain grouting effect in the actual engineering, constructing a curtain grouting effect evaluation index system which comprises water permeability, a rock mass sound wave speed value, a rock fracture filling rate, and transportability; (2) obtaining the monitoring data of each index determined in step (1)of the curtain grouting effect evaluation process; (3) determining a curtain grouting effect evaluation grade cloud model; (4) determining a weight vector cloud model of each curtain grouting effect evaluation index; (5) determining a membership cloud model of each curtain grouting effect evaluation index; and (6) providing the curtain grouting effect fuzzy comprehensive evaluation method based onthe cloud model. According to the method, the curtain grouting effect fuzzy comprehensive evaluation method based on the cloud model is achieved, and the grouting effect evaluation result is more comprehensive and objective.

Description

technical field [0001] The invention belongs to the field of curtain grouting construction of dam bedrock in water conservancy and hydropower projects, and in particular relates to a fuzzy comprehensive evaluation method for curtain grouting effect based on a cloud model. Background technique [0002] The grouting construction process will be affected by various conditions such as geological conditions, construction methods, and grouting pressure, which may cause the curtain after construction to be insufficient to meet the requirements of the original design scheme in terms of rock mass permeability and compactness. Due to the concealment of the project, after the curtain grouting construction is completed, it is difficult to observe the grout diffusion in the cracks of the rock mass, and the quality of the grouting and the anti-seepage effect are not easy to detect. Therefore, it is necessary to use scientific and effective methods to evaluate the grouting construction Eff...

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Problems solved by technology

[0005] In summary, although the above studies have used different detection methods to make up for the shortcomings of the traditional grouting effect relying only on a single pressure water test result as the sole evaluation basis to a certain extent, the independent analysis is only based on the results obtained by different detection methods. The following limitations: First, a single test result only reflects the performance of a certain aspect of the rock mass after grouting in terms of permeability or compactness, and it is difficult to describe the relationship between different test results and the overall effect of the grouting project. Second, the existing grouting effect evaluation method is essentially based on a mathematical model of a definite causal relationship, ignoring the ubiquitous uncertainty in the grouting effect evaluation

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