Full
Outline
The bench slope within the elevation range from+793 m to+817 m near Line 29 of the Dabaoshan open-pit slope in Guangdong was taken as the research object, and a 3D fracture network model of the slope was firstly established based on relevant geological data and was used to conduct a 3D deconstruction analysis of the rock mass structure of the bench slope. Thereby the data on the location and distribution of blocks within the slope body were obtained. Secondly, a 3D discrete fracture network model of the bench slope was constructed to analyze the displacement and deformation of the slope under the action of fractures and gravity, delineating the potential sliding areas of the bench slope. Thirdly, the dangerous block 1 and dangerous block 2 were identified by combining the block location and distribution information with the potential sliding areas. Finally, the stability of the dangerous blocks was analyzed using the stereographic projection method. The analysis results show that the dangerous block 1 may experience wedge sliding, while the dangerous block 2 may experience double-plane sliding but with a low probability. Since the overall stability of the slope is poor, it is recommended that a combined measure of grouting, anchor cables and lattice beams should be adopted for slope prevention and control.
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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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