丰宁隧道光面爆破应用技术总结

Application technology summary of Fengning tunnel smooth blasting

通过详细介绍丰宁隧道Ⅲ级围岩段两台阶法开挖光面爆破技术的施工实例,对隧道两台阶法光爆技术设计及工艺质量控制的要点进行了总结,并将光面爆破技术应用的施工效果、产生的经济效益作了分析,以便推广光面爆破技术的应用。

This paper introduced in detail the construction example of excavation smooth blasting technology of Fengning tunnel Ⅲ surrounding rock section two step method,summarized the smooth blasting design of tunnel two step method and process quality control points,and analysed the construction effect of the application of smooth blasting technology and the economic benefit,in order to promote the application of smooth blasting technology.