A mine three-dimensional physical simulation coal seam mining roof movement monitoring method

Abstract

The invention discloses a method for monitoring movement of exploitation top boards of a three-dimensional physical simulation coal seam of a mine. The method includes the steps of arranging three sliding crossbeams in front and rear directions in upper grooves of a left beam and a right beam of a similar simulation experiment rack, fastening the sliding crossbeams through bolts, and fixing magnetic pedestals connected with the upper ends of digital dial gauges on the left-right direction of the sliding crossbeams. The lower ends of the digital dial gauges are connected with the upper exposed ends of monitoring lead wires in sleeves through clasps, and the lower exposed ends of the monitoring lead wires are connected with mobile cylinders. The method also includes the steps of selecting sleeves different in size, determining the spatial positions of monitoring points of the top boards, fixing lateral plates on the front and rear surfaces of the left and right beams through bolts, filling geological similar bodies in the model material filling space without exceeding the upper end portions of the sleeves, dismounting the front and rear lateral plates after air drying of the filling materials, connecting the digital dial gauges with a data acquisition system through data transmission lines, clearing the initial values of the digital dial gauges, exploiting the simulated coal seam, and acquiring real-time monitoring data of three-dimensional dynamic change of top boards.

Description

technical field [0001] The invention relates to a coal seam mining roof monitoring method for similar simulation experiments in mines, belonging to the field of experimental monitoring methods, in particular to a mine three-dimensional physical simulation coal seam mining roof monitoring method. Background technique [0002] The stability of the surrounding rock in the underground mining of the mine directly affects the safe and efficient mining of the mine. Therefore, the monitoring of the mining roof of the coal seam in the underground mine has become an important basis for guiding the safe mining of the underground working face of the mine. However, due to the complexity of the underground engineering environment and the difficulty of on-site research However, the monitoring data of underground coal seam mining can be restored through similar simulation experiments, which has become an important experimental method to realize the mining process of underground coal seam in ...

AI Technical Summary

Problems solved by technology

[0004] The present invention is based on the deficiency that it is difficult to accurately monitor the movement and change of different roof positions in the coal seam mining process of the three-dimensional physical simulation experiment of the mine, and proposes a method for monitoring the movement of the roof of the three-dimensional physical simulation coal seam mining of the mine, aiming at solving the different spaces of the coal seam mining roof of the three-dimensional physical simulation experiment of the mine Real-time monitoring of position movement changes, to achieve accurate acquisition of movement data at different positions of the coal seam mining roof in the mine's three-dimensional physical simulation

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