上室开挖采用分层梯段开挖和普通爆破方法。
The excavation of upper chamber was conducted by the methods of bench excavating in layers and common explosion.
崩落则十分相似于梯段爆破，只不过所需的装药量比较大一些。
Stopping can very well be compared with bench blasting but requires considerably larger charges.
贵州大花水水电站碾压混凝土双曲拱坝、重力坝开挖采用深孔梯段微差爆破。
The excavation of the rolled concrete double-curvature arch dam and gravity dam in Dahuashui hydroelectric station in Guizhou adopted deep-hole graded slight differences demolition.
破坏主要集中在楼梯梁、楼梯段、梯段与休息平台的连接处、设置在楼梯处的防震缝等。
The damage concentrated in stairway beams, stairway flight, the connection of stairway flight and rest platform, and the aseismic joint.
主要介绍露天深孔大梯段预裂爆破、减震爆破、微差爆破、最大一次装药量的控制措施和关系。
The relationship between the pre-splitting, vibration reduction, millisecond blasting and the maximum single detonating charge in open deep-hole large stage is introduced.
主要介绍露天深孔大梯段预裂爆破、减震爆破、微差爆破、最大一次装药量的控制措施和关系。
The relationship between the pre-splitting, vibration reduction, millisecond blasting and the maximum single detonating charge in open deep-hole large stage is introduced.
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