Effect of Coalbed Methane Well Fracturing on Slope Stability of Open-Pit Coal Mine: A Case Study of Shengli East No. 2 Open-Pit Coal Mine

Table 2

Geometric parameters of the model.

Designation of layer	Thickness (m)	Depth (m)
Topsoil layer	40	40
Pliocene layer	50	90
Upper coal and rock layer	100	190
Coalbed no. 6	60	250
Middle coal and rock layer	150	400
Mudstone layer	90	490
Lower coal and rock layer	260	750
Conglomerate layer	120	870