【摘要】 地震导致山体大范围开裂松动,使岩体裂缝(隙)张开、扩展进而形成危险的震裂边坡。裂缝是控制震裂边坡变形破坏的切割边界和滑移边界,为此,考虑裂缝扩展、裂缝充水和地震影响,采用极限分析上限法对汶川地震震中附近的一实地震裂边坡的稳定性变化进行分析。计算结果揭示了随裂缝扩展延伸,在雨水、地震作用影响下震裂边坡稳定性变化规律,为类似边坡的分析评价与工程治理提供了理论依据。更多还原

【Abstract】 Earthquake shocking inevitably bursts and shatters mountainous slopes.Because rock cracks(fractures) open and propagate influenced by earthquake,mountainous slope becomes the dangerous cracked slope.For such slope,the crack is the cutting and slip boundaries that control the slope failure.In this paper,limit analysis upper bound method is applied to analysize stability of specific cracked slope induced by Wenchuan earthquake in prospective of crack propagation,water inflow in crack and earthquake.The calculation reveals the variation of slope stability influenced by precipitation and earthquake in the process of crack propagation.This study provides a theoretical basis for evaluation and engineering protection of such cracked slopes.更多还原