bench depth 中文意思是什麼
bench depth
解釋
替補球員的素質或稱板凳深度。-
Considering the above reason, this paper, by the action - reaction model in the design theory of underground structure, and by fem, establishes an analysis frame based on the characteristics of the cavern - pile method. the influences of tunnel span, height, overburden depth, and excavation sequence on the cavern - pile method are discussed by a careful interpretation of the modeling result. in addition, a comparison of surface settlement and engineering quantity of the cavern - pile method with those of the binocular excavation method, bench cut method and cd method are made in the paper
本研究主要是依據目前地下結構設計及計算理論中的地層結構法，以有限單元法為計算手段，針對淺埋暗挖洞樁法的自身特點確定了模擬分析方案，並通過計算結果的處理和分析指出了洞室跨度、高度、埋深、施工工序等因素對淺埋暗挖洞樁法的影響規律。 -
The paper introduces the progress and the statue quo of tunnel portal construction, discusses the condition to employ full face method, bench cut method, single side heading method and double sides heading method of portal construction, points out advantages and disadvantages of these methods. the order to adopt these methods of single track, double track and tri - track tunnel in shallow - depth, uneven pressure and incompact ground is also advised after compare
討論了全斷面法、臺階法、單側壁導坑法和雙側壁導坑法在隧道洞口段施工中的使用條件和優缺點，對這四種施工方法從各個方面進行了比選，提出了單線、雙線和三線隧道的洞口段處于淺埋、偏壓、鬆散的地層中時各種施工方法選擇的先後順序。
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