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前言。光面爆破是一项效果良好的先进技术,利用现有的技术装备(风钻、火药、雷管)进行浅眼光爆和中深孔光爆是可行的。在施工技术上易于掌握,它精确有效地破岩,减少超挖量,保持围岩稳定,巷道造型好。在加快掘进速度、提高工效,降低材料消耗、降低成本,保证安全生产和质量标准化,显示了优越的技术经济效果。 1 光面爆破的作用 1.1 光面爆破的内容和实质是获得平整的开挖断面和控制开挖边界以外围岩的破坏程度,以达到边坡稳定和围岩稳定。在施工中采用光面爆破有显著作用:(1)爆破后的巷道规整、圆滑、造型好,符合设计断
Foreword Smooth blasting is a well-advanced technology. It is feasible to use the existing technical equipment (wind drill, gunpowder and detonator) for shallow-eye explosion and mid-deep-hole explosion. It is easy to master in the construction technology. It breaks the rock accurately and effectively, reduces the over excavation volume, keeps the surrounding rock stable and the tunnel shape is good. In accelerating the speed, improve work efficiency, reduce material consumption, reduce costs and ensure safety in production and quality standardization, showing the superior technical and economic results. 1 The role of smooth blasting 1.1 The content and essence of smooth blasting is to obtain a smooth excavation section and control the destruction of rock surrounding the excavation boundary to achieve the stability of the slope and the stability of the surrounding rock. The use of smooth blasting in construction has a significant role: (1) After the blasting of the roadway neat, sleek, good shape, consistent with the design