Borehole sealing quality classification and risk evaluation system

Abstract

The invention discloses a borehole sealing quality classification and risk evaluation system. The system comprises a borehole sealing information database subsystem, a borehole sealing information inquiry subsystem, a borehole sealing quality classified evaluation subsystem and a poor sealing borehole water diversion risk evaluation subsystem. Classified evaluation is conducted on sealing quality of boreholes from the two aspects of the use quantity of hole sealing materials and hole sealing distances of the boreholes, the quality situations of the boreholes are comprehensively evaluated in combination with the evaluation results of the two aspects, poorly sealed boreholes are determined through classified evaluation on the sealing quality of the boreholes, influence factors are quantized through an influence index system for calculating borehole water diversion risk factors, influence indexes of the quantized factors serve as training samples of a BP artificial neural network model, and the water diversion risk of the poorly sealed boreholes is evaluated by means of the trained network model. Efficient evaluation is achieved, and relatively more accurate quantitative evaluation results of the sealing quality and the water diversion risk of the boreholes are obtained.

Description

technical field [0001] The invention belongs to the field of coal mine production, and in particular relates to a drilling sealing quality classification and risk evaluation system. Background technique [0002] Sealing bad boreholes is an important factor that causes water inrush accidents in coal mines. The boreholes constructed in different historical periods have closed quality problems due to various reasons, which have brought great hidden dangers to coal mining. Poorly sealed boreholes can lead to surface water, aquifer water, and old empty water, and can also lead to gas or harmful gases in coal seams or old air, and can also cause spontaneous combustion of coal seams. Abandoned boreholes have strong concealment and large vertical depth, so it is difficult to prevent them during production. However, due to the small impact range on the borehole plane, they are often easily overlooked, and thus often lead to major accidents. [0003] Many coal mines have kept drilli...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a drilling sealing quality classification and risk assessment system, aiming to solve the problem of low work efficiency and easy omissions in the way of paper-based preservation of coal mine drilling related information. The existing information system only realizes drilling data management, but did not analyze and evaluate the sealing of boreholes and the impact of coal seam mining on boreholes

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