The excavation of upper chamber was conducted by the methods of bench excavating in layers and common explosion.
上室开挖采用分层梯段开挖和普通爆破方法。
In the process of urban construction, the Excavation Nearby Existing MTR is more common.
在城市建设的过程中，临近地铁隧道的深基坑的开挖越来越普遍。
According to common problems on spiral excavation drilled-pouring pile, including deviation of pile, declivity of hole, slumped hole, it analyzes reasons and puts forward relative prevention measures.
针对桩位偏移、桩孔倾斜、塌孔等旋挖钻孔混凝土灌注桩常见的质量问题，就其产生的原因进行了分析，并提出相应的预防措施和处理办法。
The inclined support is a common form of deep excavation bracing structural system.
斜支撑是基坑围护体系的一种常见形式。
The inclined support is a common form of deep excavation bracing structural system.
斜支撑是基坑围护体系的一种常见形式。
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