It is a difficult problem to demolish large building bases by controlled blasting techniques within a narrow area of concentration plant.
在选矿车间的狭小范围内，用控爆技术拆除大型构筑物的基础是一大难题。
It is difficult to demolish structure which has lower height of gravity center, larger supporting surface and mortar rubble with demolition blasting in city.
在城市拆除爆破中，用小孔爆破法拆除重心很低、支承面大的浆砌片石构筑物难度很大。
In order to demolish an old internally frame reinforced four story building complex in the city, at first, the directional blast was adopted and the blasting drills had been practised.
为了快速拆除杭州市内一幢内部框架加固的四层古式建筑楼房，原设计采用向南侧定向坍塌的爆破方案，并已钻眼确定爆破缺口。
应用推荐