到目前为止,还没有提出过一种适合于开拓和准备巷道的计算方法,像对回采巷道那样,在设计阶段就能够对其将出现的变形作出量的预计,并采用相应的支护形式。最近几年,矿山研究股分有限公司所属的矿井支护及岩石力学研究部门成功地解决了上述问题。本文所阐述的计算方法,只依据在设计时所已知的一些影响数值。图1为开拓和准备巷道在其整个服务期限内的顶底板移近量情况。在最初阶段,巷道的顶底板移近量是由掘进所引起的。岩石弹性变形时的应力转移,最近在掘进掌子面后两倍巷道直径处便趋于稳定,在爆破掘进 So far, no calculation method suitable for the development and preparation of roadway has been proposed. As for the mining roadway, the amount of deformation that will occur during the design phase can be estimated and the corresponding form of support can be adopted. In recent years, Mine Research Co., Ltd. belongs to mine support and rock mechanics research department successfully solve the above problems. The method of calculation described in this article only relies on some of the known effects at design time. Figure 1 shows the amount of roof floor movement approaching and extending for the entire period of service. In the initial stage, the amount of roof floor movement of the roadway was caused by the excavation. The stress transfer during elastic deformation of the rock has tended to stabilize twice at the diameter of the tunnel after the tunneling of the face,