The movements and the countermeasures of the ‘Choja Landslide’

The “Choja Landslide” has long history of movement. Since 1963, synthetic survey and prospectings have been conducted and the countermeasures mainly for the drainage of the groundwater have been executed. The “Choja landslide” has traveled more than 200m and the rate of the movement is 20cm/year since its beginning and its characteristic, retrogressive slope evolution remains the future problems.