Study of loading-unloading states and energy distribution relationship for rock mass
Study of loading-unloading states and energy distribution relationship for rock mass
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发表时间：
2012
影响因子：
1.5
通讯作者：
Cun-cheng Shi
中科院分区：
文献类型：
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作者：
Cun-cheng Shi
岩体是一种流变材料，在高地应力的长期作用下，其内部的不均匀应力会随着时间的推移而松弛，最终趋于静水应力状态，在这种状态下，虽然体积仍保持弹性，但失去了抵抗剪切变形的能力;本文采用平面压缩模型研究了岩石的变形行为和能量分布关系，岩体在不同应力水平下的长期效应，探讨了强卸荷作用下的脆性断裂破坏，揭示了初始地应力值（能量分布关系）对岩体变形（惯性、粘性和弹塑性变形）的影响规律，为建立深部岩体加卸载本构模型奠定了基础。
Rock mass is a rheological material;under the action of high geostress for a long time,its inner unequal stress could relax as time itself;thus finally tends to be hydrostatic stress state.In such state,although the volume remains elastic,it lost the ability to resist shear deformation;its energy mostly stored in volume deformation.This paper uses a plane compression model to investigate the deformation behavior and energy distribution relationship for rock mass under different stress levels long-term effects;and then discusses the brittle fracture failure for strong unloading,so as to reveal the influence law that initial geostress value(energy distribution relationship) acts on rock mass deformation(inertia,viscosity and elasticplastic deformation).The research results build a basis to establish the loading-unloading constitutive model for deep rock mass.