Baishuihe landslide is a typical representative of bedding landslide in the Three Gorges reservoir area. However, the research on its formation evolution process and deformation characteristics after water storage is not deep. On the basis of field geological investigation and the latest survey data and GPS monitoring data, this paper makes a detailed study on the rock and soil structure of Baishuihe landslide and its deformation characteristics after impounding. The results show that the evolution process of Baishuihe landslide has gone through the early stage of landslide, the rock landslide and the accumulation landslide. At present, Baishuihe landslide is in the accumulation landslide stage; Baishuihe accumulation landslide is the product of vertical superposition of landslide accumulation bodies caused by the destruction of the second-stage rock landslide, and there is a clay layer in the middle. Corresponding to the water level of 135 m and 156-175 m, the deformation of Baishuihe landslide can be divided into two stages. The deformation characteristics of Baishuihe landslide are gently inclined steps and steeply inclined steps. The research results provide the corresponding decision-making suggestions for the treatment of Baishui River landslide, and also provide the direction for the later treatment of geological disasters with similar structural characteristics.
| 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 |