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本文扼要介绍了某矿井穿过长约10米的破碎带时,采用闭胸墙的施工方法. 在这种施工方法中,对闭胸墙正面地压的正确核定,有着重要意义;本文根据松散介质的极限平衡理论,将问题简化为平面课题,并假定在极限平衡区域边界CDE的碎岩压力为一不变的正值,然后用特性线法进行求解列出了极限平衡区域各个边界的重量计算公式,并进行了实例计算.
This article briefly introduces the construction method of the closed chest wall when a mine passes through the crushing zone of about 10 meters in length.It is of great significance in this construction method to correctly check the positive pressure of the closed chest wall.In this paper, The theory of limit equilibrium simplifies the problem to a planar one and assumes that the crushing pressure of the CDE at the boundary of the limit equilibrium region is a constant positive value and is then solved by the characteristic line method. The formula for calculating the weight of each boundary in the limit equilibrium region , And carried out an example calculation.