Study on the Process and Mechanism of Slope Failure Induced by Mining under Open Pit Slope: A Case Study from Yanqianshan Iron Mine, China

Figure 7

The survey of geomorphological changes on the eastern slope of the Yanqianshan Iron Mine (March 2014). (a) 3D view from Google Earth (12/3/2014). (b) The location of the mining area, which is observed through the same viewing angle as that of the Google Earth image (March 2014). (c) Tension cracks on the back of the small landslide head scarp. (d) The initial collapse pit (26/2/2014).