Analysis method for deep well floor water inrush risk

Abstract

The invention discloses an analysis method for the deep well floor water inrush risk. The method comprises the following steps that data of multiple main control factors of deep well floor water inrush are acquired; the data of the multiple main control factors of deep well floor water inrush are selected, and the weights of the main control factors are determined; a gray matter element deep well floor water inrush risk analysis model is built; the analysis threshold value of the deep well floor water inrush risk is determined; according to the data of the multiple main control factors, the deep well floor water inrush risk analysis model and the analysis threshold value of the deep well floor water inrush risk, the critical conditions of the deep well floor water inrush are obtained. The critical conditions of the deep well floor water inrush are obtained, a data foundation is provided for preventing floor water inrush in a specific deep well exploitation process, and technical support is provided for improving safety of deep well exploitation.

Description

technical field [0001] The invention belongs to the field of mine safety analysis, and in particular relates to an analysis method for water inrush risk on deep well floor. Background technique [0002] The mine floor water inrush risk assessment model should be a systematic system including influencing factors. At present, there are two commonly used methods, namely "water inrush coefficient" and "lower three zones" theory. Existing technologies generally explore the prediction and forecast of floor water inrush from the aspects of mathematical statistics, hydraulics and rock mechanics, fuzzy mathematics, neural network and multi-source information composite processing, but these methods are immature and not widely used. Although the "lower three zones" theory is more suitable for the actual failure of the mine floor aquifer under mining conditions, its model is not perfect, and the test process is complicated, the cost is high, and data acquisition is difficult, so it is ...

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Problems solved by technology

[0004] (2) The critical value of the water inrush coefficient obtained under the experimental conditions has limitations, which restricts its scope of application

Generally, in the working face under pressure mining, the solution is solved and the critical water inrush data is estimated based on the comprehensive consideration of the lithological structure of the floor, the integrity of the aquifer and the water pressure of the aquifer. The empirical values ​​obtained in this way are not very useful. What is grasped is used to guide the actual

[0005] When the critical value of the water inrush coefficient is used to judge whether the water inrush can occur on the floor, the result is not complete, but it is difficult to improve the discriminant formula in a short time and take many influencing factors into one discriminant formula. Long-term continuous efforts to supplement and improve

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