Dynamic detection method for mine mining-induced fracture

Abstract

The invention discloses a dynamic detection method for a mine mining-induced fracture. The difficulty and blindness of gas drainage level position gives rise to problems that the level position of the gas drainage borehole arrangement is too high, the mining-induced fracture is underdeveloped, the gas drainage difficulty is big and the efficiency is low; the excessive lower level position of the gas drainage borehole arrangement easily gives rise to problems that a working surface seriously leaks wind, the normal running of a mine ventilation system is affected, the stability of the rock stratum is bad, and the effective gas drainage time is short. The method comprises the following steps of: detecting positions, parameters and numbers of boreholes by design; constructing before mining a stopping line and detecting the boreholes, carrying out the water leakage detection and recording data; taking a vertical height as a standard to normalize detection data, forecasting the development height of the mining-induced fracture after different mining times. The method can improve conditions of blind hole arrangement, short service life and low efficiency aiming at high position gas mining, increases the reasonableness of the hole arrangement and prolongs the mining time; and the method is beneficial to the scientific formulation of an under-water-body mining system, reduces the possibility of water outgoing of the water body, reduces the cost of coal mining and gas mining and improves the economic efficiency.

Description

technical field [0001] The invention relates to a method for dynamic detection of mining fissures in mines. technical background [0002] As more and more mines are developed to the depths, the hazards and prevention of mine gas are more important. For gas, a major source of mine disasters, many mines have established mine gas drainage systems as a fundamental measure to solve mine gas disasters. . The high-level gas drainage technology developed for gas control in adjacent layers and this coal seam will undoubtedly be an effective measure to solve the excessive gas gushing during the mining process. The unreasonable drilling layout, high cost, low efficiency and great waste of human, financial and material are mainly due to insufficient understanding of the development of the mining fracture zone in the mine, resulting in or because the layers of the drainage drilling are arranged too far. high, the mining fractures are not developed, the extraction is difficult and the e...

AI Technical Summary

Problems solved by technology

[0004] The technical problem solved by the present invention is to provide a dynamic detection method for mine mining cracks that can improve the current situation of blind hole layout, short life and low efficiency for high-level gas drainage, increase the rationality of hole layout, and prolong the drainage time

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