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首页> 外文期刊>Nature reviews Cancer >Development of a three-dimensional staged volume loss tunnelling method in the centrifuge
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Development of a three-dimensional staged volume loss tunnelling method in the centrifuge

机译：在离心机中开发三维分阶段体积损失隧道法

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Conventional assessment of tunnelling-induced settlement focuses primarily on transverse profiles given the transitional nature of the longitudinal settlement profile. This approach thus relies on the commonly made assumption that the trough width parameter is constant for both directions (longitudinally and transversely). The commonly used single-stage fluid extraction method of volume loss modelling in the centrifuge, restricts the tunnelling behaviour to a plane strain problem, prohibiting any investigation into the longitudinal settlement profile. A staged volume loss tunnelling method along with a new centrifuge package was designed and built to simulate the three-dimensional construction of a model tunnel, equivalent to 6.2 m dia. tunnel in prototype, across five advancements in Speswhite kaolin clay. Using the geotechnical centrifuge at Cambridge University, this model enabled multiple runs of tunnelling construction to be simulated within one flight at different volume losses, operating at 100g. This new innovative tunnelling method in the centrifuge has allowed a distinct difference between the trough longitudinal and transverse width parameters to be observed and studied at various volume loss values.
机译：考虑到纵向沉降轮廓的过渡性质，隧道诱导沉降的常规评估主要针对横向轮廓。因此，这种方法依赖于通常所造成的假设，即槽宽度参数对于两个方向（纵向且横向）是恒定的。离心机中常用的单级流体提取方法的体积损失建模，将隧道行为限制为平面应变问题，禁止对纵向沉降型材进行任何调查。设计并构建了一个分阶段音量损耗隧穿方法以及新的离心机包，以模拟模型隧道的三维结构，相当于6.2 m Dia。隧道在原型，跨SPESWHITE高岭土粘土的五个进步。使用剑桥大学的岩土内离心机，该模型使多次运行的隧道结构能够在不同体积损失的一个飞行中模拟，以100g运行。离心机中的这种新的创新隧道方法允许在各种体积损耗值之间观察和研究槽纵向和横向宽度参数之间的明显差异。

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