The surrounding rock support were constructed by layers as the down excavation of steps.

围岩支护随台阶下挖逐层进行施工。

youdao

Based on fuzzy sets theory and tunnelling data bank, a fuzzy analogy method for design of rock support system in tunnelling is presented in this paper.

本文运用模糊数学理论，提出一种利用既有工程数据库设计隧道围岩支护系统的“模糊类比”方法。

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In the underground engineering design, the rock support under low confinement conditions should be considered to effectively control the rock deformation and failure.

在地下工程设计，低限制条件下，应考虑岩石的支持，有效地控制了岩石变形和破坏。

youdao

Engineers decided the rock would provide a good strong support for the proposed dam.

VOA: special.2009.08.12

The two performances were the latest in an annual series of benefit concerts with pop-rock performers to support Jazz at Lincoln Center, which in previous years has featured Eric Clapton, Willie Nelson and Paul Simon.

WSJ: Crosby, Stills and Nash get jazzy with Marsalis

They combined skills to push for support of rock quarries, landfills, hospitals and power plants.

FORBES: Magazine Article

It has also agreed not to close any branches and instead to increase their number "as the business' growth allows", and support Northern Rock's charitable foundation for a year.

BBC: Northern Rock sold to Virgin Money