Damages of Underground Facilities in Coal Mines due to Gas Explosion Shock Waves: An Overview

Table 1

Mass and explosion resistance increase table under different factors [31].

No.	Factors (%)	Mass increase (%)	Increase in explosion resistance (%)	The ratio of increase in explosion resistance to increase in mass	Ratio mean
1	Skin thickness increased 50	18.6–18.8	9.0–17.7	0.48–0.94	0.71
2	Stiffener increased 100	3.6–4.6	10.2–21.7	2.83–4.72	3.80
3	Flange thickness increased 100	26.5–26.8	34.0–39.8	1.28–1.48	1.40