Method for evaluating dangerousness of water inrush from coal floor

Abstract

Provided is a method for evaluating dangerousness of water inrush from a coal floor. The method is characterized in that a principle component analysis method and a GIS space analysis method are combined, the influence factors and indexes of water inrush from the coal floor are graded in sequence, the basic data of the 17 graded indexes are obtained, R and S type principle component comprehensive analysis is carried out on the basic data, master control factors are screened out, a water inrush dangerousness evaluation formula is built according to the determined master control factors, master control factor thematic maps are built according to the GIS space analysis method, finally, all the thematic maps are overlapped according to the water inrush dangerousness evaluation formula, and a thematic map of the dangerousness of water inrush from the coal floor is obtained so that the dangerousness of water inrush from the coal floor can be evaluated accurately, reliably and quantitatively. The method has the advantages of being quantitative, visualized and the like, scientific bases can be provided for actual production, and the realistic positive guiding function on coal mine safety production is achieved.

Description

technical field [0001] The invention provides a method for evaluating water inrush from a coal seam floor, in particular to a method for evaluating the risk of water inrush from a coal seam floor. Background technique [0002] Mine water inrush disaster prevention has always been a major research topic in coal mine safety in my country. Coal seam floor water inrush is the main form of coal mine water inrush accidents. Reasonable and scientific evaluation of coal seam floor water inrush is an important prerequisite for ensuring safe production in coal mines. [0003] Over the years, many scholars have done a lot of research on the evaluation methods of coal seam floor water inrush, and put forward many feasible theories, such as "multi-source information fusion method", "vulnerability index method", "partial least squares regression method" Wait. [0004] However, there are many deficiencies in these evaluation methods, mainly as follows: First, there are few quantitative an...

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Problems solved by technology

[0004] However, there are many deficiencies in these evaluation methods, mainly as follows: First, there are few quantitative analysis and evaluations on the influence degree of factors affecting coal seam water inrush; second, the evaluation results of floor water inrush are not intuitive; more important Unfortunately, none of the above methods can achieve more accurate prediction and evaluation of water inrush from the coal seam floor in advance, and more or less have defects or deficiencies of low reliability.

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