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In order to understand the mechanism of crack formation in the RCC gravity dam body during operation, this paper takes the Shimantan reservoir dam as the research object, adopts a method of using the ESEL command in APDL language and the rotation of local coordinate system to complete the random aggregate delivery, and constructs a three-dimensional macro-micro finite element model of the No. 9 non-overflow dam section of the Shimantan dam. The simulation results of aggregate placement show that the method can quickly generate three-dimensional spherical and polyhedral aggregates, greatly improving the efficiency of aggregate generation. The results calculated by the macro-micro model are more consistent with the actual crack distribution of the dam, and the impact of the rapid rise in summer temperature and rapid drop in winter temperature on the cracking of concrete dams during operation cannot be ignored.
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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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