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Tailing dam construction method and special water baffle device

A construction method and technology for tailings dam, applied in protection devices, dams, applications, etc., can solve the problems of difficult construction, complex structure and high cost, and achieve the effects of short construction period, simple structure and simple structure

Inactive Publication Date: 2012-05-30
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing tailings dams are usually built using undulating natural terrain. When building a dam, it is necessary to consider the water-retaining and seepage structure, as well as the feed inlet, discharge outlet, and clarified liquid return system, resulting in complex structures, difficult construction, long periods, and high costs. high

Method used

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  • Tailing dam construction method and special water baffle device
  • Tailing dam construction method and special water baffle device
  • Tailing dam construction method and special water baffle device

Examples

Experimental program
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Embodiment 1

[0026] Embodiment one: see figure 1 — Figure 7 , a tailings dam construction method, a material retaining device is arranged on the back side of the water surface, and the inclination angle of the material retaining device is set according to the angle of repose of the dry tailings used; the water retaining device includes a truss-type support structure, and the lower end of the water retaining device It is fixed on the concrete cap, and the water retaining plate is fixed on the truss-type supporting structure. Drainage holes are distributed on each water retaining plate. The crossbeams of the truss supporting structure and the vertical pillars on both sides are respectively provided with drainage grooves. After summarizing the water tank and the vertical drainage tank, it is connected with the water treatment system. First, an anti-seepage layer is set at the bottom of the river bed. Then lay a layer of geomembrane on the anti-seepage layer, and the end of the geomembrane ...

Embodiment 2

[0033] Embodiment two: see Figure 7 , a water retaining device for tailings dams, comprising a truss-type support structure, the lower end of the truss-type support structure is fixed on the concrete cap 35, water retaining plates 5 are fixed on the truss-type support structure, and each water retaining plate 5 is Drainage holes are distributed. Drainage grooves are arranged on the inside of each beam 34 of the truss support structure. Drainage grooves 32 are respectively arranged on the vertical pillars 31 on both sides. The drainage tank 36 communicates with the water treatment system.

[0034] The truss structure is designed as a combined structure of multiple sub-trusses, and the pillars of each sub-truss are fitted and fixed in turn, or can be fixed separately.

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PUM

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Abstract

The invention relates to a tailing dam construction method and a special water baffle device. The construction method comprises the following steps: laying a geomembrane layer on a riverbed bottom, arranging the baffle device at the downstream face side, and setting an inclined angle of the baffle device according to the adopted repose angle under the dry state of tailings, wherein the baffle device comprises a baffle plate with drain holes as well as a drainage channel; under the action of the baffle plate, blocking up tailing fluid and then draining so as to form tailing layers; and removing the baffle device after a tailing dam body is dried and shaped, and finally forming a dam body which is fully composed of the tailing dam. In the invention, the tailing fluid is fixed by the water baffle device and then forms into the tailing layers after drainage, and the tailing layers are sequentially superposed to form the dam body; and therefore, a fixed angle (in line with the repose angle) which is formed after the tailing dam body is dried can be naturally formed and not stressed without help of the water baffle device, thus realizing the simple and stable tailing dam structure. The construction method has the advantages of easy construction process and short construction period.

Description

technical field [0001] The invention relates to a tailings dam in the technical field of water conservancy, in particular to a tailings dam construction method and a special water retaining device. Background technique [0002] The tailings dam is a dam-like structure built using the mud slag (tailings) after hydro-separation or local materials. When the tailings dam is built, it is necessary to consider the water-containing fluid tailings for seepage treatment to form a fixed dam body. Existing tailings dams are usually built using undulating natural terrain. When building a dam, it is necessary to consider the water-retaining and seepage structure, as well as the feed inlet, discharge outlet, and clarified liquid return system, resulting in complex structures, difficult construction, long periods, and high costs. high. Contents of the invention [0003] In order to overcome the shortcomings of the prior art, the invention provides a tailings dam construction method and ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B7/06E02B11/00E02B8/00E02D31/02
Inventor 魏群刘尚蔚孟凡玲张国新姜华
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER