光面爆破技术在软岩地区隧洞开挖工程中的应用

Application of Smooth Blasting Technique in Engineering of Excavating Tunnel in Soft Rock Area

光面爆破在钻爆法施工中是一种比较成熟的施工技术,在软岩地区根据围岩的变化情况,及时调整光爆参数,对同类围岩,根据其结构特征,破碎程度等不同情况,分别选取不同的光爆参数,都可获得较理想的爆破效果。结合工程实例,介绍光面爆破参数的选取、施工中调整及施工效果分析。

The smooth blasting, which belongs to drill-blasting consturction method, is a ripe technique. According to the changable situation of adjoining rock in soft rock area, the smooth blasting parameters should be adjusted in time. As to the same adjoining rock, based on the different situation of structure characteristic and rock breakage degree, the different parameters of smooth blasting should be selected respectively. Thus, the more ideal effect of blasting can be obtained. Combining with actual engineering example, this artical introduces the selecting of smooth blasting parameters, the regalation of these parameters, and the analyzing on construction effect.