Underground coal mining environment risk prediction grading method

Abstract

The invention discloses an underground coal mining environment risk prediction grading method. The method comprises the following specific steps: step 1, identifying a main underground coal mining environment risk problem; 2, analyzing a main underground coal mining environment risk problem; 3, constructing an underground coal mine environment risk evaluation index system; 4, performing correlation discussion on each index in the index system; 5, determining main evaluation indexes influencing the environmental risk; step 6, carrying out weight sensitivity analysis on each index in the index system; and step 7, predicting and grading the mining environment risk of the underground coal mine area. According to the invention, the existing environmental risk problems can be comprehensively researched in a classified manner, and a corresponding index system is constructed; the influence of different influence indexes can be distinguished, so that key response is realized; by comparing the correlation among the indexes, an index library is optimized; through index grading and a multi-criterion decision-making model, key prevention and treatment measures are facilitated to be implemented.

Description

technical field [0001] The invention belongs to the field of coal mine geological environment evaluation, and in particular relates to a method for predicting and grading underground coal mine mining environmental risks. Background technique [0002] Coal resources are generally buried deep, and underground mining is the most important coal mining method, accounting for more than 90%. The long-term high-volume underground coal resource mining has caused tremendous pressure on my country's geological environment. First of all, the mining of underground rock formations and the drainage of groundwater will reduce the amount of groundwater and cause pollution, and at the same time cause large-scale land subsidence; ground subsidence will increase the degree of surface undulation, easily induce secondary geological disasters such as landslides, collapses, and debris flows, and at the same time destroy the original surface The shape of the water body causes soil erosion, land dese...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a method for predicting and grading mining environmental risks in underground coal mines, which is used to solve the identification and classification of mining environmental problems in underground coal mining areas, and its influencing factors Technical issues such as the construction of the index system and the determination of weights, the classification of each index and the comprehensive assessment of the risk level of the mining area

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