节理发育反倾边坡破坏机理分析及模拟

Mechanism analysis and simulation on damage of antidi slope with well-developed joints

为了解决边坡岩体结构的稳定性评价及其力学变形特性,采用了离散单元理论和利用UDEC(Universal Distinct Element Code)技术,用离散块体模拟节理发育反倾边坡破坏机理和加固变性过程。将此理论和技术应用于贵阳市乌开公路K44+340～K44+450段右侧滑坡工程;研究了塑性变化范围和发展趋势;同时还利用独有的离散滑动的优势分析软弱结构面上的块体滑移和节理张拉破坏的演变过程,该成果对岩体边坡工程具有一定的参考价值和指导意义。

UDEC is described as a ＂distinct element program＂.This numerical method falls within the general classification of discontinuous analysis techniques.This study aimed to model the failure mechanism,deformation characteristic and stability evaluation on the slope at the right side of Section K44＋340～K44＋450 at Guiyang Wukai highway.The strength reduction method of slope stability analysis was applied in this study to model the range and trend of the plasticity development.Also,using the discrete sliding properties,the blocks slide and tension breakage evolving process of weak structural planes was modeled.This study has some practical and referential value.