大采深大倾角沿空回采工作面动态加架技术研究

Study on Dynamic Frame-adding Technology of Mining Face with Large Mining Depth and Large Inclination Along the Air

阳城煤矿3303工作面呈梯形布置,采深-800^-985m,辅助轨顺为沿空巷道,围岩变形量大,推进过程中需在轨顺逐步增加正常液压支架及前后部溜槽。3303工作面动态加设支架方案研究,对减少顶板事故、提高资源回收率、缩短加架时间具有重要意义,为下一步回采类似工作面提供科学依据及技术保证。

The 3303 working face of Yangcheng Coal Mine is trapezoidal,with mining depth of-800^-985m.The auxiliary rail alignment is a goaf roadway,with large amount of surrounding rock deformation.In the process of advancing,the normal hydraulic support and front and rear chute should be gradually increased in the rail alignment.The study on the scheme of dynamic adding support in 3303 working face is of great significance to reduce roof accidents,improve resource recovery rate and shorten the time of adding support,and provide scientific basis and technical guarantee for the next similar working face.