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首页> 外文期刊>Earth Surface Processes and Landforms: The journal of the British Geomorphological Research Group >Numerical modelling of combined erosion and weathering of slopes in weak rock
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Numerical modelling of combined erosion and weathering of slopes in weak rock

机译：弱岩边坡综合侵蚀与风化的数值模拟

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摘要

Due to various decay processes associated with weathering, the stability of artificial slopes in weak rocks may be affected well within their envisaged engineering lifetime. Conceptually, the decay following the initial stress release after excavation can be described as a process seeking equilibrium between weathering and erosion. The extent to which such an equilibrium is actually reached influences the outcome of the weathering-erosion decay process as well as the effects that the decay has on the geotechnical properties of the exposed rock mass, and thus ultimately the stability of slopes affected by erosion and weathering. This paper combines two conceptual models for erosion and weathering, and derives a numerical model which predicts the resulting slope development. This can help to predict the development of a slope profile excavated in a weak rock in time, and can be extended with the addition of strength parameters to the weathering profile to enable prediction of slope stability as a function of time.
机译：由于与风化有关的各种衰变过程，软岩中人工边坡的稳定性可能会在其预期的工程寿命内受到很大影响。从概念上讲，开挖后初始应力释放后的衰减可以描述为寻求风化与侵蚀之间平衡的过程。实际上达到这种平衡的程度会影响风化侵蚀衰减过程的结果，以及衰减对裸露岩体的岩土特性的影响，从而最终影响受侵蚀和侵蚀影响的边坡的稳定性。风化。本文结合了侵蚀和风化的两个概念模型，并推导出了一个预测最终坡度发展的数值模型。这可以帮助预测在弱岩石中开挖的边坡轮廓的发展，并且可以通过向风化轮廓中添加强度参数来扩展，从而能够预测随时间变化的边坡稳定性。

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