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

The invention discloses a chemical siltation resisting drainage device for a tailing dam, comprising a drainage pipe, a siltation resisting trough, water seepage holes, water seepage troughs and geotextiles. The invention is characterized in that the drainage pipe is a circular pipe, and the end part of the pipe is provided with the water seepage troughs and the water seepage holes, and the waterseepage troughs are tightly wrapped by the geotextiles; the siltation resisting trough is a rectangular box body having no cover, and the front end of the box body is provided with a circular hole having the same pipe diameter as the drainage pipe; the drainage pipe is obliquely arranged in the siltation resisting trough of the box body at an inclination angle so as to prevent the geotextiles from generating chemical siltation and ensure that the dam body can drain normally. The chemical siltation resisting drainage device has the advantages of simple structure, high effectiveness, low cost and convenient use, and ensures that the geotextiles do not alternate between saturation and nonsaturation, thus preventing the geotextiles from generating chemical siltation. By using the chemical siltation resisting drainage device, the drainage capability of the dam is reinforced, thus ensuring smooth drainage, reducing the seepage line of the dam effectively and accordingly lowering the operation risk of the tailing dam.

The invention discloses a method for heightening and expanding the capacity of an ultra-fine tailings reservoir for one-time construction of the dam by adopting the center line method, adopting a staged construction method for heightening and expanding the capacity, and successively stacking the first level of heightening dam body (2), The second-level heightening dam body (3), the third-level heightening dam body (4) ..., construct a row of medium-coarse sand seepage drainage of the level parallel to each other and perpendicular to the axis of the dam body on the top floor of each level of heightening dam body For the blind ditch (9), lay drainage connecting pipes (7) and groundwater collection pipes (11), and bury seepage flower pipes (8) in the medium-coarse sand drainage blind ditch (9) of this level, with a vertical interval of 0.5m~ A layer of high-strength corrosion-resistant geogrid (6) is fully paved at a height of 1.0m. The method of the invention accelerates the consolidation of fine-grained tailings, improves and increases the mechanical strength index of fine-grained tailings, significantly increases the storage capacity of tailings storage, prolongs the service life of production, and relieves the pressure of enterprises to discharge tailings. , At the same time, it also solves the problem of insufficient capacity of some dumps and the accumulation of mining waste rocks.

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 provides a tailings reverse filter material, a preparation method and its application, a reverse filter material drainage structure and its application, and specifically relates to the technical field of tailings treatment. The tailings anti-filtration material includes stacked gravel layers, gravel tailing sand joint transition layer and tailing sand layer; the gravel tailing sand joint transition layer includes gravel and tailing sand, and the tailing sand is filled between adjacent gravels gap. The seepage drainage structure of the reverse filter material includes the seepage drainage pipe and the gravel layer arranged in sequence outside the drainage pipe wall, the gravel tailing sand combined transition layer and tailing sand layer, and a filter screen, which is sleeved on the Outside the seepage drainage pipe, it is arranged between the gravel tailings joint transition layer and the tailings layer. Drainage holes and partitions are arranged around the seepage pipe. The tailings reverse filter material and reverse filter material drainage structure provided by this application can accelerate the discharge of water in the tailings, prevent silting, improve the degree of consolidation of the tailings, reduce the infiltration line during the accumulation of the tailings, and ensure that the tailings The bearing capacity and shear strength of the dam improve the safety of the tailings dam.

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.

The invention discloses a dam-filling process of full tailings slurry filling mold bags and solidified bodies, and relates to the technical field of mold bag dam stacking, including dam structure selection, slurry making, three-dimensional three-dimensional drainage system construction, mold bag selection, and mold bag body Layout, mold bag body fixing, mold bag body filling, artificial drainage and other processes, this process, as a new technology to realize tailings slurry dams in tailings ponds, is an iteration and innovation of the previous mold bag dam building methods, not only the dam building process The method is simple and fast, and the formed dam body has a low infiltration line, high dam body stability, and high safety. In addition, the solidified dam body formed by the present invention can store and process -200 to -400 mesh tailings particles, and the dam body has a three-dimensional drainage system formed by dislocation and staggered arrangement of the solidified body of the mold bag, which is beneficial to Realize rapid drainage of mold bag solidified body, strong practicability.

The present invention discloses a method for improving an in-service tailings pond capacity and a device thereof, belonging to a field of tailings pond expansion technology. The method and the device are realized through a three-step tailings pond processing: a step of installing a working cushion for a tailings pond with a designed pond capacity and constructing a drainage system for drainage consolidation; a step of increasing the dam body height, discharging new tailings mud into the pond, and installing the working cushion and constructing a drainage system for a second time when the mud reaches the newly-increased dam body height; a last step of conducting consolidation processing on the newly-discharged tailings mud and storing the mud in different areas and on different layers via a paving system. The method for improving the in-service tailings pond capacity and the device thereof substantially reduce horizontal acting force of original tailings mud on an original tailings dam while a saturation line of the tailings dam body is lowered, with safety of the tailing pond improved, void ratio of a tailings soil mass greatly reduced, and the capacity of the tailings tank enhanced. Therefore the service life of the tailings pond is prolonged. The construction device of improving in-service tailings pond capacity has characteristics of easy operation, flexible combination, quick operation, and succinct and efficient construction technology.