A short-process treatment method for water gushing in the working face suitable for downhole concentration fluctuations

Abstract

The invention discloses a working face gushing water short-process treatment method suitable for downhole concentration fluctuation. The working face gushing water short-process treatment method comprises the steps that downhole working face gushing water is filtered through a dustpan collecting device and then drained to a grading device to be treated; a bottom flow in the grading device is drained to a high-frequency sieve to be dewatered; oversize objects dewatered through the high-frequency sieve serve as products to be conveyed to a raw coal belt to be transported out; filtering residueson the dustpan collecting device are removed through a downhole main residue removing system and then conveyed to the raw coal belt to be transported out; meanwhile, an overflow of the grading deviceis pumped through a slurry pump into a well sewage treatment pond and / or a downhole buffer water sump; the well sewage treatment pond conducts further clarifying; sediments of the downhole buffer sumpare pumped into the high-frequency sieve through a bearing pump on a floating ship device; and undersize objects dewatered through the high-frequency sieve return to the grading device. According tothe working face gushing water short-process treatment method, no any other dewatering and concentrating equipment exists, the technological process is short, and operability is high.

Description

technical field [0001] The invention relates to a method for treating water gushing in an underground working face, in particular to a short-process method for treating water gushing in a working face suitable for downhole concentration fluctuations, and belongs to the field of underground safe production. Background technique [0002] During the coal mining process, a large amount of underground coal slime water will be generated due to mine water gushing, water for cutting coal seams, and water for underground dust removal, which will accumulate at the bottom of the water tank for a long time to form silted coal slime, which not only reduces the effective volume of the water tank, but also once silted After the amount exceeds a certain threshold, a large amount of coal slime will enter the water distribution well of the main drainage system, and the contained coal slime particles will wear out the drainage system. In severe cases, the suction port of the main drainage pump ...

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Problems solved by technology

However, the above means all have deficiencies. At first, shoveling out the silted coal slime inside the sedimentation tank needs to be cleaned manually, which will increase the labor intensity of workers; moreover, the direction of the inclined plate arranged in the inclined plate sedimentation tank and The angle is sensitive to the change of the working condition of the incoming material, so the adaptability of the inclined plate sedimentation tank is not very good for the coal slime water with large changes in the working condition, and the discharge pipeline of the inclined plate sedimentation tank is also relatively complicated and difficult Coping with variable and large-volume slime water working conditions; finally, using a filter press for pressure filtration cannot cope with a wide range of coal slime water concentration, and the working conditions are unstable, so it is difficult to guarantee the quality of the filter press products, and the pressure The larger power consumption of the filter is also a problem that needs to be considered

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