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In order to evaluate the influence of shock wave formed by the explosion of cold shock extinguishing bomb on the extinguishing effect, shock wave formed by explosion dispersion of different extinguishing mediums was observed by schlieren experiment apparatus. The propagation law of shock on the interface between air and fluid was studied by numerical simulation, and finally the process of pool fire suppression by cold shock extinguishing system was photographed by high speed photography. Comparative analysis to the percent of high color stage at the same position of each image were made. It was found that the shock wave was formed after extinguishing medium dispersion, but its strength is weak. The mach reflection in the air and disturbance on the liquid surface were found when the shock wave propagated through interface of air and liquid, the strength of shock gradually attenuated with the increase of distance. The percent of high color stage in the earlier stage was weaker than in the later. So the influence of shock wave on the extinguishing effect was weaker than medium dispersion in cold shock extinguishing system.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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