Deep high stress hard roof stope dynamic disaster monitoring and early warning method

Abstract

The invention provides a deep high stress hard roof stope dynamic disaster monitoring and early warning method, and belongs to the technical field of mine dynamic disaster prevention and control. Thedeep high stress hard roof stope dynamic disaster monitoring and early warning method comprises the steps that firstly geological materials are investigated, surveyed and obtained, and dynamic disaster influence factors are determined preliminarily; then a ground stress field test scheme is formulated, a ground stress field test is carried out nearby a stope, confining pressure filter test is carried out on a rock core of a ground stress test point in a laboratory, and ground stress distribution rule is concluded; meanwhile, a SURPAC geological modeling software is adopted, a three-dimensionalmodel of a coal seam and earth surface is established, the stope static ground stress field distribution characteristics are obtained, a disaster-causing mechanism is researched, and energy storage rock stratum structural characterization study is carried out; and finally, the monitoring scheme and equipment is determined, monitoring equipment is installed on site, and monitoring and early warning on site is carried out. According to the deep high stress hard roof stope dynamic disaster monitoring and early warning method, the monitoring scheme of tracing rock mass fracture tracks and stressfield migration characteristic is adopted, a classified early warning index system is applied. Energy level, time and position of dynamic disaster changing of an operation surface can be accurately predicted, and safe production of the operation surface is guaranteed.

Description

technical field [0001] The invention relates to the technical field of mine dynamic disaster prevention and control, in particular to a method for monitoring and early warning of dynamic disasters in deep high-stress hard roof stope. Background technique [0002] At present, the main instruments and equipment used for coal mine dynamic disaster monitoring and early warning at home and abroad include the following categories: vibration monitoring, electromagnetic monitoring, stress monitoring, displacement monitoring, electric charge monitoring, infrared monitoring and cuttings monitoring. Instruments and equipment are based on corresponding physical principles and monitoring methods, and play an active role in monitoring and early warning of coal mine dynamic disasters. However, the mechanism of dynamic disasters in coal mines is complex. The same coal mine, the same coal seam, the same working face, and different advancing stages have different dynamic disaster mechanisms, ...

AI Technical Summary

Problems solved by technology

However, the mechanism of dynamic disasters in coal mines is complex. The same coal mine, the same coal seam, the same working face, and different advancing stages have different mechanisms, precursory information, and vibration parameters of dynamic disasters, and reliable monitoring and early warning cannot be achieved.

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