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Due to the lack of measured temperature on the channel surface, it is difficult to accurately simulate the channel temperature field. Considering the effect of solar thermal radiation on the temperature of the shady slope, sunny slope and bottom slab of the channel, a calculation model of channel surface temperature increase was established. The finite element software ABAQUS was used to simulate the temperature field change process of the channel and analyze the frost heave of the channel lining under the condition of three times of cooling. The results show that under the influence of solar thermal radiation, the freezing depth of the shady slope of the channel is significantly greater than that of the sunny slope and the bottom slab, the calculated freezing depth and the damage law of the lining are also in good agreement with the actual situation. During the cooling process, the concrete lining of the shady slope is more prone to frost damage than that of the sunny slope and the bottom slab, the same rule applies when calculated according to the multi-year maximum freeze depth utilization specification. The research results can provide new ideas for the temperature control and crack prevention design of channel concrete lining.
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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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