Centrifuge model test study on the micro pile reinforcement of soil slopes under drawdown condition

Abstract

Micro anti-slide piles are an effective reinforcement approach for slopes. Centrifuge model tests were carried out to explore the deformation and failure behavior of micro pile reinforced slopes under drawdown condition. The slip surface is discontinuous and divided into two parts by the micro pile group. The slip surface occurs at the top of the slope after the instability of micro piles and develops to the bottom and as the water level decreases. There is a significant coupling effect between slope deformation localization and local failure. The micro piles restrict the deformation localization and greatly improves the stability of the slope structure. The reduction of pile spacing can cause deformation distribution of the slope more uniform and increase the stability of the micro anti-slide pile group.