Water diversion

WATER DIVERSION (EN: water-way; DE: Abgraben, Wasserentziehung; FR: evacuation des eaux, derivation des eaux; ES: tuberia de desague; RU: водоотвод) is the removal (usually using the free gravity flow) of the underground mine, open-pit mine, and drainage waters from the near-stope place into the watercourses and water bodies, which are having no hydraulic link with the mine workings, or which are located outside the distance of their influence. The water diversion is performed through the open ditches, troughs, pipelines, or adits. The water diversion ditches are usually laid through the water-resistant rocks. In case of the existence of the water-permeable rocks at the individual sections of the ditches, they shield the bottom and walls using the water-impermeable materials, or they divert the water through the ceramic, concrete, reinforced concrete, asbestos-cement, and plastic pipelines, while at the pressurized sections, they divert the water through the steel and asbestos-cement pipes. During the process of the water diversion, the underground mine and open-pit mine waters pass through the purification installations; the drainage waters (from the boreholes for the lowering of the level of the water) may be diverted without the preliminary purification, if the content of the polluting components within these waters does not exceed the established norms for the limiting acceptable concentrations.