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潘浩,孙树林,高诗钦,龚郴彬.含锯齿状结构面的岩质边坡稳定性拟动力分析[J].河北工程大学自然版,2022,(2):52-58
含锯齿状结构面的岩质边坡稳定性拟动力分析
Pseudo-Dynamic Analysis of Rock Slope Stability with Serrated Plane
投稿时间:2021-11-19  
DOI:10.3969/j.issn.1673-9469.2022.02.008
中文关键词:  边坡稳定  锯齿状结构面  锚固效应  安全系数
英文关键词:slope stability  serrated structural plane  anchor effect  safety factor
基金项目:国家自然科学基金资助项目(41674113);中央高校科研业务费专项资金资助项目(2109B42214)
作者单位
潘浩 河海大学 地球科学与工程学院, 江苏 南京 211100 
孙树林 河海大学 地球科学与工程学院, 江苏 南京 211100 
高诗钦 河海大学 地球科学与工程学院, 江苏 南京 211100 
龚郴彬 河海大学 地球科学与工程学院, 江苏 南京 211100 
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中文摘要:
      为了研究含有锯齿状结构面的岩质边坡稳定性,结合锯齿状结构面的剪切强度经验公式,综合考虑结构面参数、锚固效应、地震作用以及地下水位深度等因素的影响,基于改进的拟动力法推导了加锚结构面边坡抗滑稳定性安全系数计算式,并分析了岩石边坡稳定性的影响因素,结果表明:锯齿状结构面的抗剪强度与起伏角呈线性关系,随着起伏角的增大而增大;随着地震系数、滑动面倾角、水位深度、边坡倾角以及土体重度的增加,边坡稳定性降低,随着内摩擦角的增大而提高;锚固力越大,岩体的抗剪强度增大,边坡抗滑稳定性提高,但是锚固角的增大对边坡的稳定性起着负面效应。
英文摘要:
      In order to study the stability of rock slope with serrated discontinuity, by combining with the empirical formula of shear strength of serrated discontinuity and considering the influences of structural plane parameters, anchoring effect, seismic action and groundwater depth, the safety factor calculation formula of anti-sliding stability of the slope with anchor structural plane was derived in this paper based on the improved pseudo-dynamic method, and the influential factors of rock slope stability were analyzed. The results show that the shear strength of the serrated structural plane has a linear relationship with the fluctuation Angle and increases with the increase of the fluctuation angle. With the increase of the seismic coefficient, slip plane dip angle, water level depth, slope dip angle and soil weight, the slope stability decreases and increases with the increase of the internal friction angle. The larger the anchoring force, the greater the shear strength of rock mass, and the anti-sliding stability of slope is improved. However, the increase of the anchoring angle has a negative effect on the stability of slope.
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