Research on the support and intelligent warning technology for gob-side roadway driving in fully mechanized mining face of coal mine
In response to the difficult roadway protection and instable surrounding rock in traditional deep well fully mechanized mining face with long-pillar,taking Jiangjiahe Coal Mine of Binxian Coal Co.,Ltd.as the engineering background,the surrounding rock environment,the spatiotemporal evolution law of stress and deformation,and the stress response characteristics of the original roadway were studied through theoretical analysis,numerical calculation,and on-site experiments.A roadway protection method for gob-side roadway driving with small-pillar was proposed,and the adaptability of the size of the coal pillars for roadway protection was analyzed.The field practice showed that the real-time monitoring of the surrounding rock stress and the support structure of the roadway had been achieved by establishing monitoring sections on the coal mining face,and the intelligent early warning of surrounding rock of gob-side roadway had been achieved finally through establishing data analysis stations on the ground to process and analyze various underground monitoring data,and to integrate,evaluate and warn the data exceeding the threshold.
gob-side roadway drivingsmall coal pillarintelligent early warninginstability of roadway surrounding rock
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