Open-pit mine water gushing direction identification and treatment method

Abstract

The invention relates to an open-pit mine water gushing direction identification and treatment method. The method comprises the following steps that S1, hydrogeological survey is carried out; S2, water samples in a wet season and a dry season in the region are correspondingly collected, and clustering analysis based on hydrochemical characteristics is carried out; S3, according to the deduced water gushing source range, a pumping test is carried out; S4, if the hydrogeological parameters have no obvious difference, the water gushing source mixing ratio is calculated through a mixing model, iterative calculation is carried out through data of multiple observation wells, the water gushing direction is judged accordingly, and the treatment range is defined; and S5, water pumping and drainingtreatment is conducted, a river anti-seepage treatment method on one side of the pit gushing direction is adopted, and mining area earth surface water interception and drainage are treated. The methodhas the advantages that the local hydrogeological characteristics and the groundwater seepage field characteristics are effectively combined to timely treat the slope gushing water, the pit gushing water accident is prevented, and the pit safety level and the production efficiency are improved.

Description

technical field [0001] The invention belongs to the technical field of mine water gushing direction identification and control, and in particular relates to an open-pit mine water gushing direction identification and control method. Background technique [0002] my country is a country that uses open-pit mining for iron ore, and more than 90% of the self-produced iron ore comes from open-pit mining. Usually, the geological structure and hydrogeological conditions of the ore deposit and its surrounding rocks are extremely complex, so there are hidden dangers of water damage in a large number of side slopes and underground roadways formed by mining, and mine water gushing accidents occur from time to time, and often cause serious damage consequences. Most of the mines in our country belong to the type with complex hydrogeological conditions. With the continuous exploitation of mine resources, more and more mines have entered deep mining areas, and the hydrogeological condition...

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Problems solved by technology

The surface dewatering method is mainly used in the pre-drying stage, which is only suitable for the condition of small excavation depth, and it is not suitable for mines in the later stage of mining; the underground dehydration method mainly includes roadway dewatering and underground drilling. The method is generally applicable to the situation where there is little water gushing in the pit or the excavation depth is too large, and the investment and operating costs are high; if the grouting method is applied to mines with a large depth of ore body and a wide range, it will result in the required grouting holes The quantity is large, the hole depth is large, and the treatment cost is expensive

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