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根据弹簧恒力支撑装置的原理,设计了一种动压软岩巷道用让压锚杆,介绍了动压软岩巷道用让压锚杆的总体结构及让压机理,并对锚固头进行了受力分析,推导了刀形凸轮方程,通过Matlab编程求解了刀形凸轮轮廓曲线。该锚杆具有3级伸长性能,变形量大,能在保持一定锚固力的条件下,使锚固头沿锚杆体产生大位移让压,且在围岩卸压后锚固头可回移补强,形成柔性支护。
According to the principle of spring constant force supporting device, a dynamic pressure and soft rock roadway is designed to let the pressure bolt, the general structure of the pressure rock bolt and the let pressure mechanism are introduced, and the anchor head is carried out For the force analysis, the blade cam equation was deduced, and the contour curve of the blade cam was solved by Matlab programming. The anchor has a three-stage elongation, large deformation, under the condition of maintaining a certain anchorage force, the anchor head generates a large displacement along the anchor rod to allow pressure, and the anchor head can be moved back to make up after relief of the surrounding rock Strong, the formation of flexible support.