Disaster-pregnant performance evaluation method for karst region inrush water disaster source

Abstract

The invention discloses a disaster-pregnant performance evaluation method for a karst region inrush water disaster source. The method includes the steps that identification indexes are selected, wherein a tunnel with disaster-pregnant performance needing to be identified is selected as an identification sample, and necessary parameters and optional parameters are selected according to practical engineering region geological surveying and underground water parameter test analysis; index weight calculation is conducted on the necessary parameters and the optional parameters one by one through a correlation function method, and the weights of the indexes are acquired; a single-index attribute measure function is established according to a single-index attribute measure function table, and a single-index attribute measure is calculated according to the weights of the indexes and the single-index attribute measure function which are acquired through calculation; a multi-index comprehensive attribute measure is calculated according to the single-index attribute measure; attribute identification analysis is conducted, wherein according to the multi-index comprehensive attribute measure, a proper confidence coefficient is selected, and the disaster-pregnant grade of practical engineering is acquired through calculation. Disaster-pregnant factors easy to acquire and measure serve as indexes for evaluating the disaster-pregnant performance of the inrush water disaster source, and the disaster-pregnant grade of practical engineering is quantitatively evaluated.

Description

technical field [0001] The invention relates to a method for judging the disaster-forming nature of a water inrush disaster source in a karst area. Background technique [0002] Tunnel and underground engineering involves traffic engineering (railways, highway tunnels), water conservancy and hydropower engineering (water tunnels, underground powerhouses) and other important engineering fields, and has gradually become an important part of the country's major infrastructure projects. According to the planning of strategic technological development such as "Five", the focus of major construction projects is gradually shifting to the western mountainous areas with extremely complex topography and geology. The karst water inrush faced during the construction process is one of the main geological disasters in the construction of tunnels in karst areas. The hazard-forming evaluation of water inrush in tunnels in karst areas is the key to analyzing and solving problems. [0003] H...

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Problems solved by technology

[0003] However, domestic research on this aspect is not perfect at present. In the process of tunnel water inrush analysis, the complexity of underground engineering geological conditions is often ignored, and most models can only give qualitative or semi-quantitative analysis results. It is impossible to give the exact disaster-forming level in combination with the hydrogeological conditions of the site

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