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The influence of hydraulic properties of geogrid on the stability of expansive soil slope was explored by conducting fluid-solid coupling analysis with Plaxis software. On this basis, the principle of flexible support for expansive soil slope under different rainfall conditions was analyzed. It is found that the axial forces on geogrid in each layer of the reinforced slope increase with the continuous infiltration of rainwater, presenting a “convex” shape variation. Without taking consideration of the hydraulic properties of geogrid, the axial forces on the geogrid will be underestimated and the stability of the slope will be overestimated. Flexible support structure can effectively control rainfall infiltration into slope and maintain the shear strength of expansive soil, meanwhile control the slope deformation and displacement growth. Thus, it is regarded as an effective way to support expansive soil slope.
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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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