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为了保证主要巷道的净尺寸不变,需要构筑承受其变形的支架。对于开采较深、地质条件复杂的矿山,作者提出以积极的方法控制围岩的应力状态和强度,为此而在矿山巷道周围构筑厚层的整体外壳。本方法的实质是,开始由于应力的作用,岩石进行卸压,也就是消除掉导致岩石破坏和向巷道位移的主要原因。为此,卸压后的岩石以裂隙方式与围岩分离。例如,在设计的巷道轮廓线之外,在保护模板支架下进行药壶装药爆破,应力从裂隙形成的破碎岩石区域转移到原岩深处。卸压区域是自然的石块砌筑形成的建筑结构,分离的岩石带范围正好沿着曲线裂隙彼此连接,摆动最大范围0.1～
In order to ensure that the net size of the main roadway unchanged, you need to build to withstand the deformation of the stent. For mines with deep mining and complicated geological conditions, the author proposes to control the stress state and strength of surrounding rock in a positive way, and build a thick integral shell around the mine tunnel. The essence of this method is that the beginning of the stress relief, the rock pressure relief, which is to eliminate the main cause of rock damage and displacement to the roadway. For this reason, the pressure-relief rock separates from the surrounding rock in a fissure way. For example, in the design of the roadway contour line, in the protection of the template stent medicine pot explosion, the stress from the fracture of the rock area formed by the transfer to the original rock depth. Relief area is a natural stone masonry building structure, the separation of the rock band just along the crevice connected to each other, the maximum swing range of 0.1 ~