PHYSICAL MODEL TESTS ON INFLUENCE OF PIPE DRAINAGE SYSTEM ON SLOPE RESIDUAL DOWNSLIDE THRUST
管网渗流系统对边坡剩余下滑推力影响的物理模拟研究

The physical model tests were performed to study the influence of pipe drainage system on soil permeability,groundwater level and slope residual downslide thrust.The test results verify that groundwater pipe drainage system in pebbly-clay slope can markedly improve the soil permeability,drawdown the groundwater level,therefore decrease the slope residual downslide thrust and increase the slope stability.It is pointed out that underground drainage engineering should be the main measure in pebbly-clay landslide control.