Inverted filter structure for tailing drainage and seepage and preparation method and installation method thereof

An installation method and a technology for a filter layer, which are applied in infrastructure engineering, protection devices, buildings, etc., can solve the problems of weak permeability, high infiltration line, and blockage of the seepage system structure, and achieve simple process and product stability. High, accelerated consolidation effect

Active Publication Date: 2021-06-08
BEIJING MINING & METALLURGICAL TECH GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, for fine-grained tailings, since the pores between fine-grained tailings particles are small, the permeability is weak, and most of them exist in the tailings pond in a flow-plastic state, it often leads to long consolidation time for tailings and deviation of the infiltration line. High, it is easy to cause clogging of the structure of the traditional seepage drainage system, which affects the drainage effect

Method used

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  • Inverted filter structure for tailing drainage and seepage and preparation method and installation method thereof
  • Inverted filter structure for tailing drainage and seepage and preparation method and installation method thereof
  • Inverted filter structure for tailing drainage and seepage and preparation method and installation method thereof

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preparation example Construction

[0065] According to a second aspect of the present invention, a method for preparing a reverse filter layer structure for tailings drainage, comprising the steps of:

[0066] Crop the net to obtain the first surface net and the second superficial net;

[0067] Wrap the stones with the first surface net and the second surface net to obtain the reverse filter layer structure;

[0068] Preferably, the preparation method comprises the steps of:

[0069] (a) cutting the net to obtain the first surface net and the second superficial net;

[0070] (b) sewing the cut first surface layer net and the second surface layer net into a bag shape, and reserve a filling port;

[0071] (c) Load stones from the reserved filling port;

[0072] (d) leveling stones;

[0073] (e) Seal the filling port.

[0074] A typical preparation method of a reverse filter layer structure for tailings drainage is as follows:

[0075] See attached for details Figure 1-Figure 3 , according to the length of...

Embodiment 1

[0086] A processing method for reverse filter layer structure that accelerates the consolidation of flow-plastic fine-grained tailings:

[0087] According to the particle size distribution of tailings, choose 80 mesh and 100 mesh for white steel mesh. According to the length of the seepage pipe and the circumference of the cross section, determine the cutting size of the two specifications of white steel mesh, sew the two kinds of white steel mesh around them into a long bag shape, and reserve a filling port at the upper end. Load the prepared gravel from the filling port, the particle size of the gravel is 3mm, and the laying thickness is 20mm. After the laying is completed, the white steel mesh bag is sewn horizontally every 100mm to control the accumulation of gravel and cause the local reverse filter layer structure. hollow.

[0088] After the reverse filter structure is completed, the white steel mesh bag is fixed on the drainage pipe by spiral winding, and the high-mesh...

Embodiment 2

[0091] A processing method for reverse filter layer structure that accelerates the consolidation of flow-plastic fine-grained tailings:

[0092] According to the particle size distribution of tailings, choose 100 mesh and 200 mesh for white steel mesh. According to the length of the seepage pipe and the circumference of the cross section, determine the cutting size of the two specifications of white steel mesh, sew the two kinds of white steel mesh around them into a long bag shape, and reserve a filling port at the upper end. Load the gravel with a particle size of 5mm from the filling port, and lay the thickness of 15mm. After the laying is completed, the white steel mesh bag will be sewn horizontally every 150mm to control the accumulation of gravel and cause the local structure of the reverse filter layer to be hollow.

[0093] After the reverse filter structure is manufactured, the white steel mesh bag is fixed on the seepage pipe along the central axis of the vertical se...

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Abstract

The invention provides an inverted filter structure for tailing drainage and seepage and a preparation method and an installation method thereof, and relates to the technical field of drainage and seepage. The inverted filter structure for tailing drainage and seepage is formed by wrapping stones of different grades with an inner net and an outer net. The inverted filter structure is suitable for tailings with the fine particle content being 70% or above, solidification of a flow plastic state fine particle tailing pond can be accelerated, a large amount of fine particle tailings are effectively prevented from entering a drainage and seepage pipe, and the soil retention property, the silt prevention property and the permeability required by the inverted filter criterion are achieved.

Description

technical field [0001] The invention relates to the technical field of tailings seepage drainage, in particular to a reverse filter layer structure for tailings seepage drainage, a preparation method and an installation method thereof. Background technique [0002] At present, horizontal seepage drainage, vertical seepage drainage, blind seepage drainage ditch and combined spatial seepage drainage are the typical seepage drainage system structures used in tailings ponds. For tailings with better consolidation, the above seepage drainage systems have a good effect. seepage effect. However, for fine-grained tailings, since the pores between fine-grained tailings particles are small, the permeability is weak, and most of them exist in the tailings pond in a flow-plastic state, it often leads to long consolidation time for tailings and deviation of the infiltration line. High, it is easy to cause silting of the structure of the traditional seepage drainage system, affecting the...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): E02D31/00
CPCE02D31/00
Inventor武伟伟周汉民崔旋薛强李云飞储莹
OwnerBEIJING MINING & METALLURGICAL TECH GRP CO LTD