【摘要】 本文通过有限元数值模拟计算,对门城煤柱内应力分布规律,应力的流变特性、煤柱内的现应力状态、峰值压力的大小和位置,开采不同煤层时所留刀柱的尺寸及对另一层煤的影响等进行了探讨。更多还原

【Abstract】 Through the simulation and calculation of numerical value of finite element, the paper discusses and studies distributive regularity of stress, the feature of flowing strain, state of stress, peak value and its position of pressure in Men Chen Pillars and influcence on another coal seam by size of retaining knife-pillar when different coal seams are excavated.更多还原