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缓倾层状岩体边坡在结构面的切割下易发生崩塌灾害。本文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,模拟结果与文中公式计算结果基本一致。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。本文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。
Gently inclined layered rock slope in the structural surface of the cut prone to collapse hazard. Based on fracture mechanics and mechanics of materials, a method for calculating the interbedded load and stability coefficient of complex gentle-dip rock mass slopes is established in this paper. In this paper, the complex gentle-dip rock mass slope with two or more sets of structural planes is taken as the research object. Then, the stability of slope is analyzed with the inclined rock body slope of Yangcha River in Chongqing Hanjiang River. The calculation results are basically the same with the scene of slope failure. The stability coefficient of the inclined slope of the Yangcha River in the Qingcha River in Chongqing is obtained by numerical simulation. The simulation results are in good agreement with the formulas in the paper. Finally, the failure modes and regularities of the slope of the Yangcha River in the Qingcha River in Chongqing are revealed by numerical simulation. The main cause of the rock cavity failure in the lower part of the slope is pressure. The calculation method of interlaminar load and stability coefficient of complex gentle dip rock mass slope established in this paper can provide theoretical basis for the setting of prevention and control structures of complex gentle dip rock mass slope.