CAJ | 학술논문

基于岩质顺层边坡的离散元仿真模型,研究了结构面各参数(黏聚力、内摩擦角、刚度、倾角、间距)对边坡稳定性的影响,明确了其对边坡安全系数及破坏模式的影响规律. 采用正交试验的极差分析原理,探讨了各结构面参数对边坡稳定性影响的显著程度,明确了结构面各因素对边坡安全系数影响的显著顺序. 研究表明,随着结构面强度的增大,边坡安全系数在一定范围内呈线性增长,且边坡的破坏模式从顺层滑移逐渐转变为滑移-弯曲破坏模式;随着结构面刚度和结构面间距的增加安全系数变化幅度很小,其最大变化率仅为6. 6%和3. 6%,边坡破坏模式主要为滑移式破坏. 随着结构面倾角的增大边坡安全系数表现为减小—增大—减小的趋势,破坏模式由滑移式破坏变为滑移-溃曲破坏最后变为倾倒破坏;结构面黏聚力对边坡稳定性影响最大,结构面刚度影响最小.
기우암질순층변파적리산원방진모형,연구료결구면각삼수(점취력、내마찰각、강도、경각、간거)대변파은정성적영향,명학료기대변파안전계수급파배모식적영향규률. 채용정교시험적겁차분석원리,탐토료각결구면삼수대변파은정성영향적현저정도,명학료결구면각인소대변파안전계수영향적현저순서. 연구표명,수착결구면강도적증대,변파안전계수재일정범위내정선성증장,차변파적파배모식종순층활이축점전변위활이-만곡파배모식;수착결구면강도화결구면간거적증가안전계수변화폭도흔소,기최대변화솔부위6. 6%화3. 6%,변파파배모식주요위활이식파배. 수착결구면경각적증대변파안전계수표현위감소—증대—감소적추세,파배모식유활이식파배변위활이-궤곡파배최후변위경도파배;결구면점취력대변파은정성영향최대,결구면강도영향최소.
Based on the discrete element numerical simulation of rock slope,influences of the parameters ( cohesion,internal friction angle,rigidity,dip angle,spacing) of rock structural plane to slope stability is studied to clear the influencing law for safety factor and failure modes of slope. According to the principle of variance analysis of orthogonal experiment,the significance that rock structural plane parameters impact on the slope stability is discussed. It is shown that slope safety factor is on linear growth in a cer-tain range with strength of the rock structural plane increasing,and the failure modes shift gradually from the bedding sliding failure modes to the sliding-bending failure modes. The safety factors changes very little with the rigidity and spacing of rock structural plane increasing. Its maximum variance ratio is only 6. 6% and 3. 6%,and the slope failure modes are mainly sliding failure modes. Slope safety factor firstly decreases,then increases and finally decreases with the increase of the rock structural plane dip angle,and failure modes shift from shearing slip failure modes to shearing slip-buckling failure modes,finally to the tilting failure modes. The impact of the rock structural plane cohesion on the slope stability is the greatest,and the rigidity is the least.