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Method and device for preparing in-situ sand and gravel seepage-proofing material and constructing water interception curtain

A technology of anti-seepage materials and preparation devices, which is applied in the direction of clay preparation devices, cement mixing devices, chemical instruments and methods, etc., and can solve the problems of the decrease in strength and impermeability of anti-seepage concrete, the difficulty of safety prevention and control, and the low utilization rate of the site and other issues to achieve the effect of reducing material costs, shortening transportation time, and avoiding land occupation

Pending Publication Date: 2022-04-15
INNER MONGOLIA PINGZHUANG COAL IND GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention provides an in-situ sand and pebble anti-seepage material preparation method and a water-cutting curtain construction method and its device to overcome the low field utilization rate, polluted environment, high material cost, difficult safety prevention and control, and ecological damage existing in the prior art. Environmental problems, and at the same time, it is necessary to overcome the problem of the strength and impermeability of anti-seepage concrete caused by long-distance transportation.

Method used

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  • Method and device for preparing in-situ sand and gravel seepage-proofing material and constructing water interception curtain
  • Method and device for preparing in-situ sand and gravel seepage-proofing material and constructing water interception curtain
  • Method and device for preparing in-situ sand and gravel seepage-proofing material and constructing water interception curtain

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Step 1: Determine the position of the water-cutting curtain 8 according to the engineering geology and hydrogeological characteristics of the open-pit coal mine.

[0065] Step 2: Use the trough forming equipment 9 to excavate the 600mm width cut-off curtain 8 trough section, the excavation depth is not less than 2m when entering the water-resistant stratum 12, and lift the stratum 11 materials such as natural sand, pebbles, gravels, etc. in the trough section to the ground Inside the transport device 10.

[0066] Step 3: Inject bentonite mud into the excavated trough section to protect the wall, maintain the upright stability of the trough section, and avoid stratum collapse in the trough.

[0067]Step 4: The natural sand, pebbles, gravels and other formation 11 materials excavated in the tank section are transferred to the aggregate preparation device 1 by the transport vehicle 10 .

[0068] Step 5: Repeat steps 2 to 4 until a cut-off curtain groove section is excavat...

Embodiment 2

[0078] Step 1: Determine the position of the water interception curtain 8 according to the characteristics of the pollutant diffusion prevention and control project. The bottom of the water interception curtain 8 is generally located in the aquifer, and the pollutant diffusion area is trapped inside the water interception curtain.

[0079] Step 2: Use the trough forming equipment 9 to excavate the 800mm width cut-off curtain 8 trough section, and lift the natural sand, pebbles, gravel and other formation materials in the trough section to the ground transportation equipment 10 .

[0080] Step 3: Inject mud into the excavated trough section to protect the wall, maintain the stability of the trough section, and avoid the stratum stratum collapse in the trough.

[0081] Step 4: The natural sand, pebbles, gravels and other formation materials excavated in the tank section are transferred to the aggregate preparation device 1 by the transport vehicle 10 .

[0082] Step 5: Repeat st...

Embodiment 3

[0092] Step 1: According to the engineering geology and hydrogeological characteristics of the open-pit coal mine, determine the position of the water-cutting curtain 8. The bottom of the water-cutting curtain 8 is generally located in the water-resisting layer, and the open-pit is trapped inside the water-cutting curtain.

[0093] Step 2: Use the trough forming equipment 9 to excavate the trough section of the water interception curtain 8 with a width of 700 mm, and lift the natural sand, pebbles, gravel and other formation materials in the trough section to the ground transportation equipment 10 .

[0094] Step 3: Inject mud into the excavated trough section to protect the wall, maintain the upright stability of the trough section, and avoid stratum strata collapse in the trough.

[0095] Step 4: The natural sand, pebbles, gravels and other formation 11 materials excavated in the tank section are transferred to the aggregate preparation device 1 by the transport vehicle 10 . ...

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Abstract

The invention relates to a method and a device for preparing an in-situ sandy gravel anti-seepage material and constructing a water-stopping curtain. The method provided by the invention comprises the following steps: crushing and screening gravel-cobble and sand generated in the grooving process of the waterproof curtain by an aggregate preparation device, crushing the gravel-cobble into macadam and machine-made sand with different particle sizes, mixing the macadam and machine-made sand with natural sand, and pouring the mixture into a stirring device after the macadam, machine-made sand and natural sand are mixed by the aggregate preparation device; and then preparing an anti-seepage material with good performance, and conveying the anti-seepage material to a water stop curtain excavation groove section through a pumping device. The device provided by the invention comprises an aggregate preparation device, an aggregate preparation device, a stirring device, a pumping device and a filling device. The structure is simple, operation is convenient, practicability and reliability are achieved, the phenomenon that the ecological environment is destroyed due to the fact that river sand, gravel or pebbles and other raw materials are excavated is avoided, the ecological environment is protected, and meanwhile the performance, the construction efficiency and the water interception effect of the water interception curtain anti-seepage material are improved.

Description

technical field [0001] The invention relates to the technical fields of underground anti-seepage, pollution control and water retention, in particular to a method for preparing an in-situ sand and pebble anti-seepage material and constructing a water-cutting curtain and a device thereof. Background technique [0002] Most of my country's open-pit coal mines and some large-water mines are located in sandy and pebble areas with strong water and strong supply. The formation has a large permeability coefficient and is supplied by surface rivers. Pumping wells are often used to control or reduce the mine water level, and the amount of precipitation is huge. Long-term dredging has resulted in a large-scale drop in groundwater levels, difficulty in producing water for the surrounding residents, death of shallow vegetation, land desertification, discharge of mine water to pollute surface water bodies, huge cost of long-term dredging, and high production costs. The use of water inter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D19/18E02D15/02C04B28/00C04B18/16B28C5/00B28C9/02
CPCY02W30/91
Inventor 郭景忠苗贺朝王永刚姬亚东郭英杰曹海东褚振尧邵东梅张秋园朱宏军
Owner INNER MONGOLIA PINGZHUANG COAL IND GRP CO LTD
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