论文部分内容阅读
本文以福建省莆永高速公路狮过山隧道为例,介绍了隧道全断面光面爆破的施工技术,阐述了炮眼直径、间距、最小抵抗线等爆破参数的取值对光爆效果的影响,简要说明了隧道炮眼的布置和装药量以及施工中的注意事项,尽可能的提高隧道全断面光爆的效果,减轻对围岩扰动,维护围岩自身稳定性,达到良好的轮廓成型。
In this paper, the construction of tunnel full face smooth blasting is introduced with the example of the Lion Rock Tunnel in Puyong Expressway in Fujian Province. The effects of the blasting parameters such as blasthole diameter, spacing and minimum resistance line on the light burst effect are expounded. The layout and charging amount of tunnel blasting and the precautions in construction are briefly described. The effect of full blasting of tunnel surface is improved as much as possible, the disturbance to the surrounding rock is reduced, the stability of surrounding rock is maintained, and a good contouring is achieved.