In hills region, a new equilibrium system will formed after the original stability of slop body was collapsed by excavation works of underground engineering.

在丘陵地区进行地下工程开挖将破坏坡体原有的稳定性，并形成新的平衡体系。

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The presented computation methods are also applicable to stability analysis of catch drain, impended wall, open caisson and other excavation works during construction.

所述计算原则和方法也适用于分析截水槽、倒挂井、沉井及其他土石开挖工程在施工期的稳定性。

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The excavation speed of pilot shaft is one of the key difficulties for the excavation of shaft, high ones in special, of hydropower works.

水电工程竖井特别是高竖井开挖，主要难点体现在竖井导井开挖的速度上。

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The gates date back to 1834 and were found during excavation works on a new road in July 2011.

BBC: Hayle to display its old sluice gates

The first works involve digging the new line through the Monktonhall area and the excavation of the site for the new Shawfair station.

BBC: Tweedbank bridge