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文章针对有重力式锚碇的岩质边坡稳定性,通过PLAXIS建立了多组不同坡形、系数的锚碇-边坡数值模型,得到各组边坡在锚碇结构加载后的安全系数,利用灰色关联分析法针对影响边坡稳定性的6个影响因素进行分析,得到各因素对边坡稳定性影响的贡献程度。分析结果表明,对有锚碇边坡的稳定性贡献程度由大到小依次为岩土体的内摩擦角、黏聚力、容重、锚碇结构的应力、坡角、坡高。结果反映了边坡的稳定性影响因素中,内因是主导因素,在实际工程中应该做好相应的防治措施。
Aiming at the stability of rock slope with gravitational anchorage, the article sets up several groups of anchorage-slope numerical models with different slope shape and coefficient through PLAXIS, and obtains the safety coefficient of each group of slope after the anchorage structure is loaded, Six factors influencing slope stability are analyzed by gray relational analysis method, and the contribution of each factor to slope stability is obtained. The results show that the order of contribution to the stability of anchor slope is the internal friction angle, cohesion, bulk density, stress, slope angle and slope height of the rock mass. The results reflect the factors that affect the stability of slopes. The internal factors are the dominant factors. In practical projects, appropriate measures should be taken.