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In view of the difference between the performance of cemented gravel soil under low normal stress and high normal stress, based on the Mohr-Coulomb strength criterion, according to the Mohr-Coulomb strength line of cemented gravel soil before and after yield stress, a polygonal line strength criterion of cemented gravel soil was proposed. The relationship between strength criterion parameters and uniaxial compressive strength and uniaxial tensile strength was deduced. Uniaxial compression test and direct tensile test were carried out to calculate the strength criterion parameters and compare with the strength criterion parameters obtained by triaxial compression test. The results show that the error range between the calculated value and the experimental value is reasonable. The polygonal line strength criterion is suitable for cemented gravel soil.
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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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