Seepage draining system layered arrangement method for decreasing seepage line buried depth of tailings reservoir

Abstract

The invention relates to a seepage draining system layered arrangement method for decreasing the seepage line buried depth of a tailings reservoir. The seepage draining system layered arrangement method comprises the following steps: (1) if the initial-stage dam elevation of the tailings reservoir is N meters, according to the tailings accumulation body beach face seepage draining condition, 1 ton layers of seepage draining blind ditches are formed in a layered mode and designed at different elevations of N+H meters, N+2H meters, N+3H meters, N+4H meters... and N+nH meters of a tailings accumulation dam, and the seepage draining blind ditches are parallel to the dam axes of sub dams and are away from the dam axes of all the stages of sub dams by M meters; (2) each layer of seepage draining blind ditch parallel to the corresponding dam axis is located in front of the corresponding stage of sub dam by M meters, and composed of peastone, a soft water filter pipe and a 400 g/m<2> wrappinggeotechnical cloth; (3) one end of each layer of water guiding pipe perpendicular to the corresponding dam axis is connected with the soft water filter pipe in the corresponding seepage draining blind ditch parallel to the corresponding dam axis through a tee joint; (4) tailings drawing and seepage draining system construction are independently and alternately conducted in a zoned mode; and (5) operation of the tailings reservoir is detected and repaired. According to the seepage draining system layered arrangement method, the seepage line buried depth can be decreased, and it is guaranteed that the dry beach length of the tailings reservoir meets the design specification requirements.

Description

technical field [0001] The invention relates to an arrangement method, in particular to a layered arrangement method of a seepage drainage system for reducing the burial depth of the infiltration line of a tailings pond, and belongs to the technical field of tailing sand damming and safe operation of the tailings pond. Background technique [0002] The tailings dam is the most important part of the tailings facility, which is related to the safety of life and property of the residents downstream of the tailings pond. Tailings dams are heightened with the continuous discharge of tailings, and generally can be built in two phases: the initial dam is built with local soil and stone materials to form a permeable dam to facilitate the drainage and consolidation of tailings; Most of them are constructed by raising the height upstream, and some dams are built downstream or in the middle. For fine-grained tailings, in order to increase the particle size of the dam body materials, h...

AI Technical Summary

Problems solved by technology

With the exhaustion of rich ore mining, more and more "poor, fine, miscellaneous" mines are exploited and utilized on a large scale. The safe stockpiling of wet tailings brings great safety hazards

The discharge of wet tailings from large-scale metal mines is large, and the accumulation of tailings in the tailings pond rises rapidly, which cannot form a large area of ​​dry beach for a long time, and there is no sufficient drying condition, resulting in high water content in the tailings and low degree of consolidation. Multi-layer fine mud horizontal interlayers are formed, sedimentary shoals have poor permeability, slow drainage and consolidation, high dam body saturation, high soaking line, low shear strength, large sliding force and poor overall stability

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