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针对深井综放采场过平行联络巷发生压架,采用理论分析、工程验证等方法对压架机制及控制对策进行研究,并基于“支护阻力相等”、“并行通过支架数最小”等原则建立了采场调斜角定量确定方法。得到结论:1)控顶厚度增大、控顶范围增大、顶板冲击和时间效应造成的支架载荷异常与支架并行通过联络巷导致的采场大面积来压综合作用是深井综放采场过平行联络巷压架的原因;2)通过加固联络巷顶板、快速推进等降低支架载荷和通过调斜采场避免大面积来压,可有效控制综放采场过平行联络巷发生压架;3)采场调斜角与联络巷宽度、顶板载荷、支架额定支护阻力、控顶距、中心距等有关。
Aiming at the pressure racking of parallel tunnel in deep shaft, the mechanism and control strategy of ram are researched by theoretical analysis and engineering verification. Based on “equal support resistance” and “ ”And other principles established a method of quantitative determination of stakes angle. The conclusions are as follows: 1) The thickness of control top increases, the range of top control increases, the load of scaffolding caused by roof impact and time effect is abnormal, The reasons for the parallel connection of the pressure ramps; 2) the reinforcement of the roof of the access lane, rapid propulsion, etc. to reduce the load on the brackets and the avoidance of large area pressure by adjusting the inclined stope, which can effectively control the occurrence of the pressure racks in the parallel liaison lane of the fully mechanized caving and caving. ) Stope angle and contact lane width, roof load, support rated support resistance, control the top distance, center distance and so on.