复杂结构面缓倾层状岩体边坡破坏机制

发布时间：2018-11-18 10:59

【摘要】：缓倾层状岩体边坡在结构面的切割下易发生崩塌灾害。以含有两组及两组以上结构面的复杂缓倾角岩体边坡为研究对象,首先基于断裂力学和材料力学,建立了复杂缓倾角岩体边坡层间荷载和稳定系数的计算方法,然后以重庆綦江羊叉河缓倾岩体边坡为例分析了边坡的稳定性,计算结果与边坡现场破坏情况基本一致。再通过数值模拟得到了重庆綦江羊叉河缓倾岩体边坡的稳定系数,模拟结果与计算结果基本一致。最后通过数值模拟揭示了重庆綦江羊叉河缓倾岩体边坡的破坏模式与规律,边坡下部岩腔破坏的主要诱因为压力。建立的复杂缓倾角岩体边坡层间荷载和稳定系数的计算方法可为复杂缓倾角岩体边坡防治结构的设置提供理论依据。
[Abstract]:The slope of gently inclined layered rock mass is prone to collapse under the cutting of structural plane. Taking the complex slowly inclined rock slope with two or more groups of structural planes as the research object, based on the fracture mechanics and the mechanics of materials, the calculation method of the interlayer load and the stability coefficient of the complex slowly inclined rock slope is established. Then the stability of the slope is analyzed by taking the slope of Yangchihe gently inclined rock mass in Qijiang as an example. The calculated results are in good agreement with the field failure of the slope. Through numerical simulation, the stability coefficient of Yangqihe gently inclined rock slope in Qijiang, Chongqing, is obtained, and the simulation results are in good agreement with the calculated results. Finally, through numerical simulation, the failure mode and law of the slope of Yangqihe gentle dip rock mass in Qijiang, Chongqing are revealed. The main inducement of rock cavity failure in the lower part of the slope is pressure. The calculation method of interlayer load and stability coefficient of complex slowly inclined rock slope can provide the theoretical basis for setting up the prevention and cure structure of complex slowly inclined rock slope.
【作者单位】：重庆交通大学水利水运工程教育部重点实验室;
【基金】：国家自然科学基金项目(51408084,51378521,51678097) 重庆市教委2014年度科学技术研究项目(KJ1400317) 重庆交通大学地质资源与地质工程重点学科专项经费(2013D-1);重庆交通大学校内科学基金课题(2013kjc043)
【分类号】：TU45

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