50results about How to "Lower Wetting Line" patented technology

The invention discloses an ultra-fine tailings dam heightening and capacity expansion heaping structure adopting the center line method for one-time construction of the dam. The dam body (2), the second-level heightened dam body (3), the third-level heightened dam body (4) ... the n-level heightened dam body is composed of a combination, and a row of dam bodies are constructed in the dam body on the top floor of each level-heightened dam body In this level of medium-coarse sand seepage blind ditch (9) parallel to each other and perpendicular to the axis of the dam body, drainage connecting pipes (7) and groundwater collection pipes (11) are laid. In this level, coarse sand seepage blind ditch (9) Seepage drainage flower pipes (8) are buried in the center, and a layer of high-strength corrosion-resistant geogrid (6) is fully paved at a height of 0.5m to 1.0m at each vertical interval. The method of the invention accelerates the consolidation of fine-grained tailings, improves and improves the mechanical strength index of fine-grained tailings, significantly increases the storage capacity of tailings storage, prolongs the service life of production, and also solves the problem of partial dump site capacity Insufficiency and stockpiling of mining waste rock.

The invention discloses a high-efficiency vertical seepage drainage device for a tailings pond, which comprises a seepage drainage pipe (1) and a connecting pipe (2). The seepage drainage pipe (1) is vertically arranged in the tailings pond and passes through the connecting pipe (2) Connected with the hidden drainage pipe and the drainage chute of the tailings pond or directly lead out of the pond, the seepage drainage pipe (1) consists of a pipe body (3) with a plurality of through holes (31) in the center, and a covering pipe The filter cloth (4) and the fixed net (5) on the outer circumference of the body (3) constitute. The present invention vertically arranges seepage drainage pipes with through-holes on the inner wall and outer covering filter cloths in the tailings dam, so that the tailings are funnel-shaped to discharge seepage at about 45° along the drainage pipes, and the seepage drainage area increases with the accumulation of tailings. Gradually increase, the closer to the seepage pipe, the better the effect, so as to effectively reduce the infiltration line in the vertical direction and ensure the safety of the tailings pond. Compared with the traditional horizontal seepage discharge pipe, the seepage discharge pipe of the present invention is more resistant to pressure and less prone to bending, and can also be used as a horizontal seepage discharge pipe, and can also be used in combination with the horizontal seepage discharge pipe.

The invention discloses a reverse seepage drain system suitable for an upstream type tailings pond, comprising a seepage drain blind ditch, a seepage collecting well, a water guiding pipe and a water seepage transfer pipe, wherein the seepage collecting well is embedded in the tailings pond along the vertical direction, and the seepage drain blind ditch is arranged in the tailings pond with a certain slope; the seepage collecting blind ditches are sloped toward the seepage collecting well and are communicated with the seepage collecting well, the seepage collecting blind ditches at the same level are arranged radially with the seepage collecting well as centre; the bottom of the seepage collecting well is communicated with the inverse water guiding pipe, the water guiding pipe is inclined from the down stream of the tailings pond to the upstream of the tailings pond, and the inverse water guiding pipe is communicated with the water seepage transfer pipe finally. The upstream type tailings pond comprises an initial dam and a fill dam, the inverse seepage drain system is arranged in the fill dam, the fill dam area where the inverse seepage drain system is positioned is configured to be a supporting prism for supporting the tailings pond after the seepage is drained completely. The structure is simple, the construction is convenient, the fill area wetting line before the dam can be greatly reduced, and the dam stability is improved.