Coal mine water burst dynamic water grouting amount prediction and grouting effect evaluation method

Abstract

The invention belongs to the technical field of mine dynamic water grouting amount prediction and evaluation, and relates to a coal mine water burst dynamic water grouting amount prediction and grouting effect evaluation method. According to the method, on the basis of collection of dynamic water grouting amount data sample materials during mine water burst blocking of diggings, factors influencing grouting amount change are analyzed, a genetic algorithm and a support vector machine learning theory are integrated, and a non-linear data model of the dynamic water grouting amount and influence factors thereof is created and applied to practical engineering projects; the method refers to a evaluation criterion method in which the effect of blocking water burst points by grouting is graded as excellent, good, qualified and unqualified according to the two influence factors including a post-grouting water burst blocking ratio and a grouting prediction ratio; prediction and evaluation processes are simple, the principle is scientific, manpower and finical resources are saved, the mine water burst dynamic water grouting amount can be predicted timely, grouting effects can be evaluated reasonably, and economic benefit is remarkable.

Description

Technical field: [0001] The invention belongs to the technical field of prediction and evaluation of dynamic water grouting in mines, and relates to a technique for predicting the amount of dynamic water grouting and evaluating the effect of grouting in the process of blocking mine water inrush, in particular to a method for predicting the amount of dynamic water grouting in coal mine water inrush and grouting effect evaluation method. Background technique: [0002] In recent years, with the continuous increase of coal mine mining depth, due to the threat of Austrian ash water in North China type coal fields, the mine reserves for safe recovery have been continuously reduced, and the production capacity of coal mines has continued to decline. The amount of resources in the working face threatened by Austrian gray water has led to frequent occurrence of water inrush incidents in the mining process. Although the current level of technology has been greatly improved, the comple...

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Problems solved by technology

The above-mentioned studies on the grouting mechanism, grouting materials, grouting methods, and the exploration of water inrush channels in the process of mine water inrush have not made any comparison between the amount of dynamic water grouting, water inrush elevation, water volume, and plugging holes. There is no reasonable evaluation standard to evaluate the grouting effect after the grouting is completed.

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