COAL MINE GOAF AREA HURRICANE DISASTER WARNING METHOD BASED ON GOAF AREA PRESSURE MONITORING

摘要

A coal mine goaf area hurricane disaster warning method based on goaf area pressure monitoring belongs to the technical field of coal mining. The method comprises: step 1: determining the thickness of a mining face, and obtaining a rock bulking factor and a rock bulk density according to columnar data of drilled rock of the mining face in combination with a rock mechanics parameter test experiment; step 2: arranging a goaf area pressure cushion in a goaf area, wherein the goaf area pressure cushion is connected to a pressure transmitter, a signal of the pressure transmitter is transmitted through an electric cable to a data acquisition substation disposed in a tunnel, a goaf area pressure is obtained, and a rock falling height and a goaf area internal clearance Δ are obtained; and step 3: calculating, in conjunction with a material mechanics formula, a maximum deflection value Smax of a hard ceiling, and comparing Δ with the maximum deflection value Smax, wherein if Δ ≥ 0.8Smax, goaf area hurricane disaster warning is performed. The method of the invention implements goaf area hurricane disaster warning on the basis of a goaf area pressure monitoring system, and the goaf area pressure monitoring system is easy to install, easy to operate, and low in implementation costs.