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To study the influence of different geo-stress levels on the propagation of explosive stress waves in natural environment such as mountains and dams, numerical simulation technology was used to simulate the explosion of concrete specimens under different geo-stress conditions. First, by applying different stresses to the boundary of the concrete specimens, the failure of specimens subjected to explosive load were observed. And then, the peak stress and particle velocity of the four preset measuring points on the specimen were obtained by changing the unilateral ground stress value and keeping the same explosion load on different models. Finally, the influence of geo-stress on the propagation of explosion stress wave was analyzed on different characteristic parameters of explosion wave, such as the peak stress and particle velocity. The results show that the influence of geo-stress on explosion stress wave is mainly manifested as “restraining propagation” and “promoting propagation” under high and low stress level, respectively. During the explosion process, the superposition coupling of explosion stress wave and in-situ stress increases the peak stress intensity of the measuring point. On the contrary, the high ground stress inhibits the displacement of the medium particles, thereby reducing the particle velocity. The research starts from the influence of different ground stress levels on the propagation of explosive stress waves, and creatively analyzes the inhibition of ground stress on stress waves.
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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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