A numerical study on the effect of geobag connectors on the slope stability

Geobags are commonly used as a rapid and effective reinforcement solution for areas such as coastlines and slopes, typically installed in a stacked configuration. In certain cases, geobag connectors are employed to enhance binding strength. However, there is limited research on the applicability and performance of these connectors. This study investigates the effects of geobag connectors on reinforced slopes, focusing on their applicability and performance. To evaluate the influence of geobag connectors, scenarios were developed considering factors such as slope angle, rainfall exposure, and the presence or absence of connectors. A coupled stress-seepage analysis was performed to assess the safety factor of geobag-reinforced slopes and the stresses experienced by the connectors before, during, and after rainfall events. The results indicated that, across all scenarios, slope safety factors decreased with rising water levels due to high rainfall intensity. A slight increase in the safety factor was observed when connectors were applied. However, the stress generated at the interface at the steepest front angle, when the water level rises due to rainfall, was significantly different from that observed under dry conditions. On the other hand, the difference in stress was minimal, regardless of the rise in water level at the gentlest front angle. Through these results, it was confirmed that the reinforcing effect of the geobag connector diminished as the front angle became less steep. This highlights the necessity for further analysis regarding the applicability of the geobag connector in relation to various influencing factors.