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The main causes of tailings dam failure include seepage damage, slope instability, seismic liquefaction, and ultra-high dam height. The high seepage line inside the tailings dam may cause seepage damage, and in severe cases, it may lead to slope instability, damage, and even dam failure. The common methods for reducing the seepage line of dam bodies have problems such as high construction difficulty, high manual maintenance cost, and complex equipment maintenance management. The horizontal drainage method is used to install horizontal filter pipes in the drainage blind ditch close to the horizontal level to reduce the seepage line. This project adopts the method of drilling horizontal holes inside the dam body and installing seepage pipes inside the holes to form a horizontal drainage body. The seepage pipes form a drainage network through the main collection pipe outside the dam body. The water inside the dam seeps into the drainage pipes, then converges to the main water collection pipe, and finally flows out of the dam by gravity. This method has the advantages of low cost, low energy consumption, and easy management, and is a practical and feasible method to reduce the seepage line of tailings pond。
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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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