Table 2 Scheme design.

Buried depth H/m	Mining thickness M/m	Longwall face advance D/m	Height of waterconducting fractured zone H₁/m	Surface subsidence W/mm	D/H	H/M	W/M (subsidence coefficient)	H₁/H
50	4	80	50	1442	1.60	12.5	0.36	1
	4	70	50	1434	1.40	12.5	0.36	1
	4	50	50	295	1.00	12.5	0.07	1
	4	40	45	202	0.80	12.5	0.05	0.9
	4	30	30	140	0.60	12.5	0.04	0.6
100	4	160	100	1890	1.60	25	0.47	1
	4	140	100	1887	1.40	25	0.47	1
	4	100	100	1056	1.00	25	0.26	1
	4	90	66	632	0.90	25	0.16	0.66
	4	80	42	401	0.80	25	0.10	0.42
220	8.8	300	114	4923	1.36	25	0.56	0.52
	8.8	270	114	4900	1.23	25	0.56	0.52
	8.8	180	114	3819	0.82	25	0.43	0.52
	8.8	150	84	2573	0.68	25	0.29	0.38
	8.8	120	64	1016	0.55	25	0.12	0.29
300	7	390	110	4930	1.30	43	0.70	0.37
	7	375	110	4878	1.25	43	0.70	0.37
	7	270	110	3761	0.90	43	0.54	0.37
	7	240	95	3417	0.80	43	0.49	0.32
	7	210	87	2886	0.70	43	0.41	0.29

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