Circulating flame-retardant device and method for goaf under mine

Abstract

The invention discoes a circulating flame-retardant device and method for goaf under mined. The device comprises a guide base arranged on a base of a hydraulic support set of a coal mining machine and a spraying device sliding on the guide base in a reciprocating mode, wherein the spraying device sprays a stopping agent to the goaf behind hydraulic supports of the coal mining machine; and a signal induction mechanism used for controlling the spraying device to work is arranged between every two adjacent guide units. The method comprises the following steps of, 1, primarily positioning the spraying device; 2, carrying out forward movement and spraying of the spraying device; 3, reversing a spray head assembly; 4, carrying out reverse movement and spraying of the spraying device; 5, restoring the spray head assembly, and supplementing the spraying of the stopping agent; and 6, circulating the operation until the coal mining operation is finished. When the hydraulic supports of the coal mining machine work, stopping agent spraying is carried out on the goaf behind the hydraulic supports of the coal mining machine in time, so that no dead angle exists in a flame-retardant area of the goaf, safety of coal mining is guaranteed, and application and popularization are facilitated.

Description

technical field [0001] The invention belongs to the technical field of coal mine safety equipment, and in particular relates to a circulating flame-retardant device and method for goaf underground mines. Background technique [0002] During the coal mining process, underground coal resources need to be mined and transported away. Generally, during the excavation process, a method similar to that of a tunnel over a mountain on a road is used to gradually open up the tunnel between the location of the underground coal and the wellhead of the coal mine. The ore, coal, etc. are transported to the ground in order to form a reasonable transportation and mining operation surface. With the continuous transportation of coal and other ores, coal gobs are formed underground. The application of different mining technologies has alleviated the problem of coal spontaneous combustion in the goaf, but coal residue and coal loss in the goaf are still common. Leakage to the goaf, so that the...

AI Technical Summary

Problems solved by technology

However, these methods will have the disadvantages that the inhibitor is not easy to spray evenly, the flame retardant effect is uneven, the spray points are far apart, the coverage area is easily affected by environmental factors, the amount of inhibitor required for a single time is large, and the cost is high.

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