Effect of Underground Coal Mining on Slope Morphology and Soil Erosion

Table 5

Effects of different slope types on slope gradient and slope length changes caused by underground coal mining.

Slope type	Gradient variation (°)	Gradient after mining (°)	Length variation (m)	Length after mining (m)
Concave slope	1.303	10.870	−1.109	201.712
Convex slope	4.482	24.649	5.746	218.809
Mixed slope	0.066	9.360	1.497	204.158
Uniform slope	0.980	15.980	−0.513	206.542