Research on Active Advanced Support Technology of Backfilling and Mining Face

The mechanization level of coal mine in China has been developed toward automation and intelligence, which puts forward new requirements for the support mode of the advanced section of the two roadways. Given the problems of high labor intensity of passive advanced support, the 1203 working face of Xima Coal Mine is taken as the research object, and the idea of advanced active support of backfilling stopes is proposed. The supporting force of the surrounding rock and the required reinforcement support strength are obtained through theoretical calculation. The "full-roadway roof anchor cable reinforcement support" technology is proposed, and its strength is verified. The mineral pressure distribution law of the backfilling stope was revealed through numerical simulation. Finally, field verification is carried out through on-site industrial tests. The test results show that the relative proximity of the roof and floor of the roadway and the maximum relative approach of the two sidewalls are 105.56 mm and 47 mm, respectively. It can be seen that advanced active support can meet the support quality requirements of advanced support pressure area, improve the working environment of workers, and increase the efficiency of mine mechanization.