Multi-type evidence synthesis evaluation method for tunnel and underground engineering water inrush disasters

Abstract

The invention discloses a multi-type evidence synthesis assessment method of the burst water disaster of tunnel and underground construction. A risk factor which influences the burst water disaster of the tunnel and underground construction is subjected to comprehensive and systematic analysis, main factors are selected to construct an index system of risk assessment, an entropy weight method is adopted to endow the weight of each evidence index, meanwhile, a qualitative index is subjected to quantitative processing, an expert consulting system is used for giving the basic confidence level of the qualitative index, the contribution of expert experiences to an assessment result is kept, and the influence of subjectivity on the assessment result is reduced to a certain degree; and an assessment index is a multi-type index, and different types of evidence indexes are used for assessing the risk of the burst water disaster of the tunnel and underground construction under the same frame of identification through the standardized processing of the multi-type index. Through the multi-type evidence synthesis assessment method, the assessment result is expressed by deterministic data, and the generation level of the burst water disaster of the tunnel and underground construction can be visually and specifically displayed.

Description

technical field [0001] The invention relates to the field of tunnels and underground engineering, in particular to a multi-type evidence synthesis and evaluation method for water inrush disasters in tunnels and underground engineering. Background technique [0002] Tunnel and underground engineering include traffic engineering, water conservancy and hydropower engineering and other important engineering fields, and are an important part of my country's major infrastructure engineering construction. With the vigorous development of the Western Development Strategy and the implementation of the "Twelfth Five-Year Plan" and other strategies, the focus of major infrastructure projects that benefit the society has shifted to the western mountainous areas with extremely complex terrain and geological conditions. In my country, karst areas account for one-third of the total land area, and most of them are distributed in the western mountainous areas. The complex geological structur...

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Problems solved by technology

Han Xingrui systematically analyzed the mechanism of tunnel karst water gushing and built an evaluation model, which has been widely used in tunnel construction. The above methods use AHP and expert scoring methods, which are subjective in the process of use, resulting in various evaluation results. sex

[0004] However, the determination of the membership function used in the prior art has a certain degree of randomness, and the same evaluation method is used for all indicators, which has certain limitations

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