Shanxi Xinjing Mine Coal Industry Co., Ltd.

新景煤矿采用传统截割方式往往需要二次截割才能满足大断面巷道的成型需求,降低了掘进效率,增加了施工难度和成本。为提升大断面煤巷掘进作业的自动化水平,聚焦于悬臂式掘进机的二次自主截割路径规划与控制策略,探索更为高效、精确的自动截割控制技术,以8309回风巷为工程背景,采用FLAC3D软件模拟了不同截割路径下巷道顶板的垂直位移规律,根据实际情况确定了合理的截割路径,并进行了井下工业性试验。结果表明,截割路径与预设路径高度吻合,大断面煤巷截割误差控制在1m以内,显著提高了截割精度。研究成果显著提高掘进效率,降低施工成本,保障施工安全,对于推动煤矿开采技术的现代化进程具有重要意义。

The traditional cutting way used in Xinjing Coal Mine often requires secondary cutting to meet the forming requirements of large cross section roadways, reducing excavation efficiency and increasing construction difficulty and cost. In order to improve the automation level of large cross section coal roadway excavation operation, the focus is on the secondary autonomous cutting path planning and control strategy of cantilever type roadheader, and to explore more efficient and accurate automatic cutting control technology. Taking the 8309 return air roadway as the engineering background, FLAC software is adopted to simulate the vertical displacement law of the roadway roof under different cutting paths. According to the actual situation, a reasonable cutting path is determined, and downhole industrial tests are conducted. The results show that the cutting path is highly consistent with the preset path, and the cutting error of the large cross section coal roadway is controlled within 1 m, significantly improving the cutting accuracy. The research results significantly improve excavation efficiency, reduce construction cost, and ensure construction safety, which is of great significance for promoting the modernization process of mining technology in coal mines.