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In the process of the rise and fall of the reservoir water level in the dry-hot valley reservoir area, the dry and hot conditions in dry and hot valley where the surface rock mass is located need to be considered, that is, the heat and wet cycle. Based on this, repeated shear tests of joint rock sample under heat and wet cycling were carried out. The results show that with the advance of the test period, the shear stress-shear displacement curve decreases as a whole, and the shear strength of the joint surface deteriorates obviously; The deterioration effect of shear strength under repeated shearing is particularly significant only in the initial state after the shear strength is modified; The deterioration effect of shear strength under heat and wet cycle is mainly concentrated in the first five cycles; After modification, the shear strength, cohesion and internal friction angle of the joint surface show a deterioration trend of “first fast and then slow” only under heat and wet cycle, which is consistent with the experimental results. The research results have guiding significance to the deterioration of rock mass and the stability analysis of bank slope in water-level-fluctuation zone of dry-hot valley.
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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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