【摘要】 运用矿山压力理论和流体力学理论,分析了冲击气浪形成过程的三个阶段,描述了每个阶段气体的始末状态。运用气体动力学理论,视采空区气体流动为无粘性可压缩状态下绝热流动,对采空区大面积顶板瞬时一次冒落进行分析计算,求出了冲击气浪涌入巷道瞬间的速度、冲击气浪沿程损失和冲击所产生的附加压强,最终得出作用在防冲密闭上的压强公式。通过分析作用在密闭上压强的影响因素,进行了防冲密闭设计,并提出了防冲措施。更多还原

【Abstract】 Based on underground pressure theory and hydrodynamic theory,the different three stages in the process of the air-bump formation were analyzed,and the initial and final states of the air at every stage were described.Based on air dynamic theory,viewed the flow of gob air as the heat-insulating flow under the non-viscosity and compressible state,the events of the instantaneous failure of roof with large area in gob were analyzed,finding the instantaneous speed with which the air-bump rushed into the roadways,the loss of air-bump along its advancing route and the additional pressure induced by air-bump.Finally,the formula of pressure acting on anti-shock bulkhead is obtained.Through analyzing the influence factors of pressure acting on anti-shock bulkhead, the anti-shock bulkhead is designed,and the anti-shock measures are proposed.更多还原