Multiple Influence Factor Sensitivity Analysis and Height Prediction of Water-Conducting Fracture Zone

Table 3

Relative error analysis.

Number	Borehole number of working face	Measured height of water-conducting fracture zone/m	“Three under” rules empirical formula		Fitted formula
			Predicted value/m	Relative error/%	Predicted value/m	Relative error/%
1	93104	45.7	44.64	2.32	44.73	2.11
2	12403	35.7	38.28	-7.24	34.72	2.74
3	22111-1	41.1	43.47	-5.76	43.33	-5.44
4	22111-2	39.2	43.47	-10.88	39.17	0.08
5	12401-1	154.0	52.90	65.65	146.66	4.77
6	12401-2	140.5	51.95	63.02	138.02	1.77
7	12406-1	74.0	51.95	29.79	75.41	-1.90
8	12406-2	89.5	51.95	41.95	88.00	1.68
9	22101	146.0	44.64	69.42	140.50	3.77
10	12304-1	55.7	48.99	12.05	61.57	-10.53
11	12304-2	53.9	48.99	9.11	53.18	1.34
12	12511-1	93.1	57.33	38.42	93.71	-0.65
13	12511-2	111.1	64.41	42.03	116.94	-5.25
14	42106-1	158.5	61.38	61.27	149.09	5.94
15	42106-2	79.4	44.64	43.78	81.67	-2.86
16	42106-3	154.4	61.38	60.25	149.09	3.44
17	42106-4	74.6	44.64	40.16	77.49	-3.87
18	31301-1	67.1	53.82	19.79	75.41	-12.38
19	31301-2	70.1	55.17	21.30	71.69	-2.27
20	31303-3	103.4	53.36	48.40	104.71	-1.27
21	31303-4	109.2	52.43	51.99	112.84	-3.33
22	43115	74.0	40.33	45.50	64.76	12.49
23	31401	87.1	51.95	40.35	108.86	-24.98
24	1203	69.0	50.00	27.54	52.98	23.22
25	23101	75.5	44.64	40.87	56.50	25.17
26	12610	99.5	54.72	45.00	92.51	7.03
27	2301	70.0	47.95	31.50	85.85	-22.65
28	105	78.0	41.62	46.64	89.93	-15.30