不同临空条件的层状反倾岩质边坡倾倒变形几何特征参数影响规律Action law of geometrical characteristic parameters in the anti-dip rock slopes under different free face condition
黄少平;晏鄂川;尹晓萌;陈前;李兴明;
摘要(Abstract):
层状反倾岩质边坡是一种常见边坡类型,其变形破坏模式多样、力学机制复杂、影响因素众多。为揭示层状反倾岩质边坡不同临空条件几何特征参数对反倾边坡倾倒变形影响规律,通过3DEC并结合数理统计系统深入研究几何特征参数对倾倒变形影响。研究表明:(1)反倾边坡具有3个临空面时边坡变形最大,1个临空面时边坡变形最小;(2)变形随边坡高度、切坡角度增大而增大,随节理面与临空面夹角的增大而减小,随岩层厚度增大先增大后减小;(3)2个临空面夹角90°时边坡变形最大;(4)1个、2个临空面时节理倾角60°时位移最大,3个临空面时随节理倾角增大而增大。
关键词(KeyWords): 反倾层状岩质边坡;3DEC;临空面;几何特征参数
基金项目(Foundation): 国家重点基础研究发展计划(“973”计划)项目(2011CB710600);; 国家自然科学基金项目(2019053086)
作者(Author): 黄少平;晏鄂川;尹晓萌;陈前;李兴明;
Email:
DOI: 10.19509/j.cnki.dzkq.2021.0111
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