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The three-dimensional seepage analysis and control of underground plants and complex tunnels are related to the long-term seepage safety of underground spaces, which is one of the key technical issues facing the construction of pumped storage power stations by abandoned coal mines. Considering the reinforcement schemes for different surrounding rocks of the lower reservoir, the spatial location of the upper reservoir, the main powerhouse and the coal mine extraction area, a refined three-dimensional finite element model for seepage analysis of complex underground space in Longdong coal mine was established. Three-dimensional seepage field analysis was carried out for typical working conditions during the construction and operation periods. Important design parameters such as external water pressure and seepage volume of the underground tunnels during the construction and operation periods were obtained. Refined simulation of the numerous drainage holes in pumped storage power stations was implemented. By calculations of the seepage field under various unfavourable conditions, the optimal spacing of the drainage holes was determined. The research results are of great significance in the evaluation of seepage safety and the design of underground roadway protection schemes for the construction of pumped storage power stations by abandoned coal mines.
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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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