三峡永久船闸深槽开挖施工技术

Excavation Technique for Deep Trench of Permanent Shiplock

在复杂条件下 ,为满足三峡永久船闸闸室槽挖及边坡稳定的要求 ,以达到优质、高效、安全施工的目的 ,采用了一系列诸如爆破方式、设计参数、微差爆破及成型爆破等综合控制技术。通过深槽开挖施工实践 ,总结了对高边坡、高应力释放区的成型爆破措施以及槽、井、洞开挖爆破相互影响的关系。

Under the complicated conditions and in order to meet the stability requirement for trenching and sloping of the permanent shiplock and the objectives in high quality, high efficiency and safe construction, a series of such control techniques as regarding blast methods, design parameters, microsecond delay blast and shaping blast were performed. Based on the construction practice in deep trench excavation, the shaping blast measures for high slope and high stress release area and the interference due to blasting between trenches and wells and tunnels as well as between blasts and supporting have been summarized in this paper.