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Using a closed explosion experimental system, the combustion performance of a new type of rock-splitting equipment's loading agent was studied, providing guidance for the drug components and proportions in subsequent products. Different gradient components with a ratio of 9∶1 to 4∶6 were designed to mix the loading agents for the closed explosion experimental, and the p-t curve and dp/dt-t curve of all agents were analyzed. The drug ratio used in the explosive strength experiment was determined to be 7∶3 and 5.5∶4.5. The mixed drugs were subjected to the explosive strength experiment using two types of loading densities, 0.12 g/cm3 and 0.2 g/cm3. The mixed drug was assumed as a single entity with a density of 1.5 g/cm3, referring to the method of treating the gunpowder burning speed. On this assumption basis, the Γ-ψ curve of the drug combustion and the corresponding parameters such as explosive strength and burning rate coefficient were obtained, among which the explosive power of the single + additive (7∶3) formula was the highest, reaching 564.87 kJ/kg. The explosive power of the dual + additive (7∶3) formula was slightly lower but still higher than that of the 5.5∶4.5 formula. The reason for the apparent incomplete combustion phenomenon observed in the experiment of the dual + additive (5.5∶4.5) formula was explained by analyzing the Γ-ψ curve of the drug. The analysis of the corresponding explosive strength and burning rate coefficient of the mixed drugs showed that the explosive force of the gunpowder on the overall drug is the dominant factor, and the increase in the ratio of the gunpowder will significantly improve the efficiency of the drug's combustion. However, the effect of the change in loading density on the burning of the two types of gunpowder is inconsistent. The increase in loading density will cause a decrease in the burning efficiency of the monobasic formula, while the dual-base formula will exhibit an increase in burning efficiency.
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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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