Mathematical Problems in Engineering

Research Article

Experimental Study on the Escape Velocity of Miners during Mine Fire Periods

Table 1

Experimental data of escape velocity.


No.	Roadway name	Roadway type	Roadway section area (m²)	inclination (°)	wind velocity (m/s)	Escape velocity (m/s)

1	+250 west roadway-+450 ventilation slope	Without rail track	6.18	-29.3	2.17	1.17
2	+450-+570 first ventilation slope	Without rail track	6.78	-28.5	-2.89	1.24
3	+820-+930 return air slope	Without rail track	8.53	-28.3	8.69	1.28
4	+450-+570 air shaft	Without rail track	6.96	-27.5	-3.16	1.28
5	+250-+450 inclined shaft	Without rail track	14.35	-27.5	-0.82	1.39
6	+450 haulage roadway	Rail track	12.85	-26.8	1.72	1.34
7	+150-+250 ventilation slope	Without rail track	8.77	-26.6	-3.39	1.32
8	+150-+250 impractical person vehicle slope	Without rail track	10.87	-26.2	-1.02	1.45
9	+450 -+570 second ventilation slope	Without rail track	8.24	-25.2	1.42	1.48
10	+570 -+700 first ventilation slope	Without rail track	9.28	-24.8	-2.64	1.53
11	+700-+820 ventilation slope	Without rail track	7.81	-24.6	3.25	1.56
12	+450-+570 impractical person vehicle slope	Without rail track	12.89	-23.3	-2.17	1.58
13	+570 -+700 second ventilation slope	Without rail track	9.23	-22.2	1.54	1.62
14	+570 uphill slope	Without rail track	6.60	-21.8	-0.94	1.69
15	+150-+250 overhead cableway	Without rail track	14.17	-21.5	-2.28	1.68
16	+250 belt roadway -+450 ventilation slope	Without rail track	9.23	-20.9	-2.29	1.71
17	+450-+570 coal flume slope	Rail track	1.89	-20.3	1.23	0.68
18	+150-+250 auxiliary shaft slope	Without rail track	8.13	-19.8	-3.46	1.77
19	+150 air shaft	Without rail track	7.91	-18.5	1.12	1.82
20	+250-+450 belt main inclined shaft	Without rail track	6.87	-15.6	-3.23	1.92
21	+570-+700 belt slope	Without rail track	7.38	-12.3	1.86	1.93
22	+250 down crossheading of third face	Without rail track	5.95	-11.7	-1.83	2.30
23	+450 down crossheading of fifth face	Without rail track	7.24	-8.6	-0.83	2.32
24	+450 up crossheading of fifth face	Without rail track	9.47	-6.4	0.68	2.35
25	+250 up crossheading of third face	Without rail track	9.36	-4.6	2.13	2.38
26	+450 up crossheading of first face	Without rail track	4.83	-4.2	-0.74	1.92
27	+820 haulage roadway	Rail track	14.35	0	1.48	3.35
28	+820 haulage roadway	Rail track	14.35	0	-1.48	2.47
29	+700 belt roadway	Without rail track	6.34	0	1.58	2.86
30	+700 belt roadway	Without rail track	6.34	0	-1.58	2.73
31	+570 haulage roadway	Rail track	13.85	0	1.78	3.41
32	+570 haulage roadway	Rail track	13.85	0	-1.78	2.41
33	+250 bottom road of second east cross drift	Rail track	13.11	0	-0.42	2.94
34	+250 bottom road of second east cross drift	Rail track	13.11	0	0.42	3.08
35	+250 haulage roadway	Rail track	6.61	0	1.12	2.83
36	+250 haulage roadway	Rail track	6.61	0	-1.12	2.67
37	+450 up crossheading of first face	Without rail track	4.83	4.2	0.74	2.04
38	+250 up crossheading of third face	Without rail track	9.36	4.6	-2.13	2.60
39	+450 up crossheading of fifth face	Without rail track	9.47	6.4	-0.68	2.57
40	+450 down crossheading of fifth face	Without rail track	7.24	8.6	0.83	2.54
41	+250 down crossheading of third face	Without rail track	5.95	11.7	1.83	2.47
42	+570-+700 belt slope	Without rail track	7.38	12.3	-1.86	2.38
43	+250-+450 belt main inclined shaft	Without rail track	6.87	15.6	3.23	2.19
44	+150 air shaft	Without rail track	7.91	18.5	-1.12	2.11
45	+150-+250 auxiliary shaft slope	Without rail track	8.13	19.8	3.46	2.07
46	+450-+570 coal flume slope	Rail track	1.89	20.3	-1.23	0.76
47	+250 belt roadway -+450 ventilation slope	Without rail track	9.23	20.9	2.29	2.04
48	+150-+250 overhead cableway	Without rail track	14.17	21.5	2.28	2.01
49	+570 uphill slope	Without rail track	6.60	21.8	0.94	1.98
50	+570 -+700 second ventilation slope	Without rail track	9.23	22.2	-1.54	1.95
51	+450-+570 impractical person vehicle slope	Without rail track	12.89	23.3	2.17	1.89
52	+700-+820 ventilation slope	Without rail track	7.81	24.6	-3.25	1.71
53	+570 -+700 first ventilation slope	Without rail track	9.28	24.8	2.64	1.84
54	+450 -+570 second ventilation slope	Without rail track	8.24	25.2	-1.42	1.78
55	+150-+250 impractical person vehicle slope	Without rail track	10.87	26.2	1.02	1.67
56	+150-+250 ventilation slope	Without rail track	8.77	26.6	3.39	1.38
57	+450 drawing roadway	Rail track	12.85	26.8	1.72	1.55
58	+450-+570 air shaft	Without rail track	6.96	27.5	3.16	1.34
59	+820-+930 return air slope	Without rail track	8.53	28.3	-8.69	0.98
60	+450-+570 first ventilation slope	Without rail track	6.78	28.5	2.89	1.28
61	+250 -+450 ventilation slope	Without rail track	6.18	29.3	-2.17	1.22
62	+250-+450 auxiliary shaft slope	Without rail track	14.35	27.5	0.82	1.64
63	+820 fifth west cross drift	Rail track	12.83	0	2.31	2.86
64	+820 fifth west cross drift	Rail track	12.83	0	-2.31	2.79
65	+820 roof road of north cross drift	Rail track	13.14	0	2.04	2.82
66	+820 roof road of north cross drift	Rail track	13.14	0	-2.04	2.76
67	+570 seventh west cross drift	Rail track	9.36	0	2.31	2.64
68	+570 seventh west cross drift	Rail track	9.36	0	-2.31	2.58
69	+150 down crossheading of second face	Without rail track	7.04	-16.1	1.21	1.85
70	+150 down crossheading of second face	Without rail track	7.04	16.1	-1.21	2.16
71	+150 up crossheading of second face	Without rail track	9.60	-12.3	-1.28	2.02
72	+150 up crossheading of second face	Without rail track	9.60	12.3	1.28	2.25
73	+150 east level roadway	Rail track	13.87	0	1.12	2.88
74	+150 east level roadway	Rail track	13.87	0	-1.12	2.82
75	+150 mining section east roadway	Rail track	9.83	0	1.45	2.64
76	+150 mining section east roadway	Rail track	9.83	0	-1.45	2.67
77	+700 second west cross drift	Rail track	12.17	0	2.26	2.81
78	+700 second west cross drift	Rail track	12.17	0	-2.26	2.73
79	+450 haulage roadway	Rail track	10.68	0	2.17	2.74
80	+450 haulage roadway	Rail track	10.68	0	-2.17	2.62