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为研究两柱掩护式综放支架对放顶煤工作面生产条件的适应性,采用现场实测方法分析了支架工作阻力的循环变化规律、工作面端面顶板的控制效果以及支架的工艺性能.结果表明:与四柱式支架相比,两柱掩护式支架工作阻力的循环以增阻为主,支撑效率大幅提高.通过平衡千斤顶的推力作用,可以保持支架位态的稳定,提供更高的工作阻力和水平初撑力,得了比四柱式支架更好的端面控顶效果.两柱式支架的控制结构简单,后部放煤空间大,提高了移架速度和放煤速度,为进一步提高工作面的生产效率创造了条件.
In order to study the adaptability of two-column covered fully mechanized top coal caving support to the working conditions of top coal caving, the cyclic variation law of working resistance of support, the control effect of face roof and the technical performance of support were analyzed by on-the- : Compared with the four-post bracket, the two-column protective bracket working resistance cycle mainly to increase resistance, support efficiency increased significantly by balancing the thrust of the jack, you can maintain the stability of the stent position, providing higher resistance to work and The level of initial support force has been better than the four-post-type control effect of the end face of the two-legged stent control structure is simple, large rear coal discharge space to improve the speed and move the coal rack speed, in order to further improve the work surface Production efficiency created the conditions.