Mine waste dump slope water drainage system and construction method thereof

Abstract

The invention provides a mine waste dump slope water drainage system. The mine waste dump slope water drainage system comprises a torrent tank, water seepage pipes, a water drainage tank, a water storage pool, a water pump and a pipeline; the water seepage pipes are buried in the oblique upper direction of the slope surface, and water outlet pipe ports of the water seepage pipes are arranged in the torrent tank and are parallel to the bottom of the torrent tank; the torrent tank is built from top to bottom along the slope surface, and the bottom end of the torrent tank is connected with the water drainage tank; the tail end of the water drainage tank is connected with the water storage pool; and the water pump is connected with the water storage pool through the pipeline. According to themine waste dump slope water drainage system, reinforced cement prefabricated round pipes are adopted as the water seepage pipes and buried in the slope surface, therefore, seepage water in the slope surface can be quickly drained, and water damaging and landsliding of the slope are avoided; meanwhile, the drained water is stored by the water storage pool and used for irrigating vegetation on the slope surface in drought days, and therefore the water resource utilization rate is increased; in addition, water outlets of the water seepage pipes are buried in the torrent tank, and therefore the condition that effluent water of the water seepage pipes generates secondary scouring to the slope surface is avoided; and furthermore, the reinforced cement prefabricated round pipes are buried in theslope surface to achieve the effect of anchor rods, the slope surface can be fixed, and slope surface sliding can be prevented.

Description

technical field [0001] The invention relates to the technical field of slope drainage, in particular to a slope drainage system of a mine dump and a construction method thereof. Background technique [0002] The slope rock and soil of the mine dump is in a wet or over-wet state due to the infiltration of surface water and groundwater for a long time. The infiltration of water not only reduces the strength parameters of the soil, but also causes the slope to be subjected to unfavorable additional forces due to the generated hydrostatic pressure and hydrodynamic pressure. Theoretical analysis shows that the stability coefficient of the slope is 0.5-0.8 lower in the saturated state of rock and soil than in the dry state, so the deep water inside the slope greatly reduces the stability of the slope, and even leads to water damage and damage to the slope. landslide. Timely drainage of rainwater and groundwater in the slope body is of great significance for improving the stabili...

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Problems solved by technology

[0003] In the traditional construction process, the drainage of the slope of the dump site adopts the method of buried or exposed, which is mostly used in the case of a small drop and a small number of slopes, and for the situation where there are water seepage points or suspected water seepage points on the slope , the complex geological conditions such as loose accumulation of tailings slag in mine dumps and rapid water seepage, few studies have been done

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