摘要
为研究开挖作用下含软弱夹层岩质边坡稳定性问题,以广东某开挖边坡为例,探究边坡开挖过程中力学效应以及卸荷效应,同时采用基于有限元强度折减法的数值模拟软件RFP A-SRM,研究不同软弱夹层参数下边坡位移变化以及稳定性问题。结果表明:软弱层层厚、倾角、内摩擦角以及软弱层数量对边坡安全系数有一定影响,其中倾角对边坡安全系数影响最为显著,而软弱层黏聚力的增大会提高边坡的安全系数,后期可考虑对岩土体进行注浆加固,提高其力学性能,进而提高边坡安全系数。
In order to study the stability of rock slope with weak interlayer under excavation,takes an excavation slope in Guangdong Province as an example to explore the mechanical effect and unloading effect in the process of slope excavation.At the same time,the numerical simulation software RFP A-SRM based on finite element strength reduction method is used to study the displacement change and stability of slope under different weak interlayer parameters.The results show that the thickness,dip angle,internal friction angle and number of weak layers have a certain influence on the safety factor of the slope,among which the dip angle has the most significant influence on the safety factor of the slope,and the increase of the cohesion of the weak layer will improve the safety factor of the slope.In the later stage,grouting reinforcement of rock and soil mass can be considered to improve its mechanical properties,thus improving the safety factor of the slope.
作者
伍土华
WU Tuhua(Guangdong Yuelu Survey and Design Co.,Ltd.,Guangzhou 510000,China)
出处
《交通工程》
2025年第12期90-93,106,共5页
Journal of Transportation Engineering
