小净距隧道控制爆破关键技术

Small Clear-distance Controlled Blasting Techniques for Tunneling

介绍了小净距隧道施工钻爆开挖中为了保证两洞之间中间岩柱的稳定,采用微差控制爆破技术、严格控制单段最大起爆药量及周边眼采用光面爆破等关键技术,这些技术是隧道结构安全和施工安全的保证。文中的一些作法,可供同类工程参考。

To ensure the stability of rock columns between two tunnels, the small clear-distance blasting excavation method is often applied to tunneling, with the differential controlled blasting technique adopted, the maximum blasting charge for each section strictly limited, and the smooth surfaced blasting technique applied to the blasting of surrounding holes. These techniques form a guaranty of security for both the tunnel structure and tunneling construction. It may serve as a reference for similar projects in the future.