Abstract:Open-pit slope monitoring is of vital importance for mine safety, and traditional monitoring techniques are limited to show the overall change of slope stability. The combined application of microseismic monitoring and 3-D laser scanning monitors the trend of overall change, as well as the effect of engineering disturbances such as blasting and excavation on slope stability. It is shown that these techniques provide essential guidance to slope stability monitoring of high pit wall, especially pit wall deep below with expansion mining practice.