Dynamic Surface Subsidence Characteristics due to Super-Large Working Face in Fragile-Ecological Mining Areas: A Case Study in Shendong Coalfield, China

Table 1

Mining and geological conditions of some SLWF [28–34, 41].

Working face	D1 (m)	D3 (m)	h (m)	Dip angle of coal seam (°)	C (m/d)	H (m)	h1 (m)
Daliuta colliery 1203	150.0	938.0	4.0	0.3	2.4	61.0	26.5
Daliuta colliery 52304	301.0	4547.6	6.5	1∼3	9.0	225.0	30.0
Daliuta colliery 52305	280.5	2881.3	6.7	1∼3	12.0	230.0	30.0
Buliuta colliery 12406	300.5	3592.0	4.5	1∼3	12.0	200.0	16.9
Halagou colliery 22407	284.3	3224.1	5.2	1∼3	15.0	130.0	15.7
Shangwan colliery 51101	240.0	4000.0	5.2	1∼3	10.0	146.0	15.6
Buliuta colliery 31401	265.3	4629.0	4.2	1∼3	13.5	255.0	/
Hanjiawan colliery 2304	268.0	1800.0	4.5	2∼4	>10.0	135.0	/