CN218323078U - Low-position plugging structure for ash field vertical shaft - Google Patents

Abstract

The utility model discloses an ash field shaft low level block structure, including shaft base and shaft pit shaft, the upper portion of shaft base and the sub-unit connection of shaft pit shaft, the base passageway upper shed of shaft base is relative with the shaft passage under shed of shaft pit shaft, and the base passageway top department of shaft base or the bottom department of the shaft passage of shaft pit shaft are equipped with shutoff board bearing structure, and shutoff board bearing structure's upper portion is equipped with the shutoff board. This low level shutoff mode is mainly applicable to ash yard or tailing storehouse and need carry out the shutoff to its horizontal pipe of discharging floodwater, through setting up the shutoff board in drainage shaft bottom to reduce the shaft in the damaged risk of the production of follow-up use, the utility model provides an ash yard or tailing storehouse in the shut off or use, the shaft lateral wall receives the great easy damaged problem of atress for a long time when the shaft needs the shutoff, under not influencing technological function, has strengthened the security of drainage shaft in the ash yard or tailing storehouse flood discharge system, is suitable for the popularization.

Description

Low-position plugging structure for ash field vertical shaft

Technical Field

The utility model relates to an ash yard or tailing storehouse flood drainage shaft shutoff technical field specifically are an ash yard shaft low level block structure.

Background

The flood drainage shaft is commonly used for the project of an ash storage yard or a tailing pond of a thermal power plant. The system has the functions that a flood discharging system (a flood discharging vertical shaft and a horizontal pipe) is arranged in the reservoir, and flood in the field is discharged out of the field through the flood discharging vertical shaft and the horizontal pipe in the flood period; and under a normal operation state, collecting seepage liquid of the ash yard or the tailing pond to reduce a seepage line of the ash yard or the tailing pond and ensure the safety of the ash yard or the tailing pond. When ash or tailings are stacked in an ash storage yard or a tailing pond in the delivery process, the flood drainage vertical shaft in the ash storage yard or the tailing pond is often required to be plugged after the elevation of the ash exceeds the elevation of the top of the flood drainage vertical shaft or when the yard is finally sealed, and a sealing plate is usually arranged at the top of the flood drainage vertical shaft for plugging. The plugging structure has the problems that the vertical shaft is hollow, the vertical shaft can be subjected to lateral pressure of surrounding ash slag for a long time, the structure generally has a certain service life, the service life of the buried structure can be shortened under the influence of surrounding media, and once the vertical shaft is stressed and damaged, the ground can be collapsed to a certain degree, so that certain safety accidents are caused.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a: the utility model provides an ash field shaft low level block structure, solved current high level block structure and caused the problem of short-lived, the structure is impaired to the shaft pit shaft.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides an ash field shaft low level block structure, includes shaft base and shaft pit shaft, the upper portion of shaft base and the sub-unit connection of shaft pit shaft, the base passageway upper shed of shaft base is relative with the shaft passageway lower shed of shaft pit shaft, the base passageway top department of shaft base or the bottom department of the shaft passageway of shaft pit shaft are equipped with shutoff board bearing structure, the upper portion of shutoff board bearing structure is equipped with the shutoff board.

Furthermore, one side or two sides of the vertical shaft base are respectively connected with the horizontal pipes, and openings on one side or two sides of the base channel of the vertical shaft base are respectively opposite to the openings on the pipeline ends of the horizontal pipes.

Furthermore, the bottom of a base channel in the shaft base is a blind hole, and the bottom of the blind hole is provided with an inverted circular truncated cone structure.

Furthermore, the supporting structure of the blocking plate is a supporting bracket arranged along the circumferential direction, and the supporting bracket is of at least three block structures or is of a whole annular structure.

Furthermore, the cross-section of support bracket be horizontal right trapezoid, the right angle that supports the bracket sets up upwards.

Furthermore, the plugging plate is a circular plate with a reinforced concrete structure or a steel structure.

Furthermore, a plurality of layers of drainage windows are arranged on the shaft of the vertical shaft, and the drainage windows on each layer are uniformly arranged along the circumferential direction.

Furthermore, shaft base and shaft pit shaft on be equipped with the maintenance cat ladder, the maintenance cat ladder sets up on the lateral wall of pit shaft and base.

Furthermore, a percolate discharge hole is formed in the plugging plate, a percolate reverse filtering layer is arranged on the upper portion of the plugging plate, and a coarse slag water seepage layer is arranged on the upper portion of the percolate reverse filtering layer.

Furthermore, the leachate reverse filtration layer comprises a lower layer grid mesh, geotextile and an upper layer grid mesh, and the geotextile is clamped between the lower layer grid mesh and the upper layer grid mesh.

The utility model has the advantages that: the bottom of the flood drainage shaft is provided with the plugging plate, so that the load borne by the shaft in the subsequent use process is reduced, the risk of shaft damage is reduced, and the problems that the side wall of the shaft is stressed greatly for a long time and is easy to damage when the shaft needs to be plugged in a sealing field or a use process of an ash storage field or a tailing pond are solved. The structure enhances the safety of the flood drainage vertical shaft in the flood drainage system of the ash yard or the tailing pond without influencing the process function.

The main scheme and the further selection schemes of the utility model can be freely combined to form a plurality of schemes, which are the schemes that can be adopted and claimed by the utility model; in addition, the utility model can be freely combined between the (non-conflict selection) selections and other selections. The skilled person will understand that there are many combinations, which are the technical solutions to be protected by the present invention, and the embodiments are not exhaustive, according to the prior art and the common general knowledge.

Drawings

Fig. 1 is a sectional view of a conventional plugging type drainage shaft.

Fig. 2 is a sectional view of the drainage shaft of the present invention.

Fig. 3 is a top view of the drainage shaft of the present invention.

In the figure: 1-a vertical shaft base, 2-a horizontal pipe, 3-a support bracket, 4-a plugging plate, 5-a vertical shaft, 6-a drainage window, 7-a maintenance ladder stand, 8-a lower grid net, 9-geotextile, 10-an upper grid net, 11-a coarse slag seepage layer, 12-a seepage drainage hole, 101-ground elevation, 102-vertical shaft top elevation and 103-final accumulation elevation.

Detailed Description

The invention will be further described with reference to the following specific embodiments and the accompanying drawings.

Referring to fig. 1, when ash or tailings are stacked in an ash storage yard or a tailings pond during a delivery process, after the elevation of the ash or tailings exceeds the top elevation of a flood drainage shaft or when the yard is finally sealed (the ash is stacked to the final stacking elevation 103), the flood drainage shaft in the ash or tailings pond often needs to be plugged, and a top sealing plate is arranged at the top of the flood drainage shaft in a conventional plugging manner, and the ash or tailings are stacked on the top sealing plate. Under the condition, the flood drainage vertical shaft is of a hollow structure, and can be extruded by surrounding ash residues in the later process, so that the flood drainage vertical shaft is easy to damage and collapse under the condition of long-term maintenance.

Referring to fig. 2 and 3, the low-position plugging structure for the vertical shaft of the ash yard comprises a vertical shaft base 1, a horizontal pipe 2, a support bracket 3, a plugging plate 4, a vertical shaft 5, a drainage window 6, an overhaul ladder stand 7, a lower grid net 8, geotextile 9, an upper grid net 10, a coarse slag seepage layer 11 and a seepage drainage hole 12.

The vertical shaft base 1 is buried underground (the upper end part is higher than the ground elevation 101), a circle of burying groove is formed in the outer side of the bottom of the vertical shaft base 1, after the vertical shaft base 1 is buried underground, soil bodies and the like can enter the burying groove, and the stability of the vertical shaft base 1 is improved by means of the form of embedding the soil bodies. Be equipped with the base passageway in the shaft base 1, the upper and left and right part of base passageway is open structure, and the bottom of base passageway is the blind hole, and the bottom of blind hole is equipped with inverted round platform structure.

The left side and the right side of the vertical shaft base 1 are respectively connected with the horizontal pipes 2 through connecting pieces, and the left opening and the right opening of the base channel of the vertical shaft base 1 are respectively opposite to the pipeline end openings of the horizontal pipes 2. The upper part of the vertical shaft base 1 is connected with the lower part of the vertical shaft 5 through pouring, and the upper opening of the base channel of the vertical shaft base 1 is opposite to the lower opening of the shaft channel of the vertical shaft 5. In the flood period, flood in the field is discharged out of the field through the vertical shaft base 1, the horizontal pipe 2 and the vertical shaft 5, and the flood discharging and flood discharging effects are achieved.

And a plugging plate supporting structure is arranged at the top of the base passage of the vertical shaft base 1 or the bottom of the shaft passage of the vertical shaft 5. The plugging plate supporting structure is a supporting bracket 3 arranged along the circumferential direction, the supporting bracket 3 is of at least three block structures, or the supporting bracket 3 is of a whole annular structure, the supporting bracket 3 is utilized to support the bearing of the plugging plate 4, and the plugging plate 4 covers and shields the vertical channel to realize the plugging effect.

The cross-section that supports bracket 3 is horizontally right trapezoid, and the right angle that supports bracket 3 sets up, and the right angle on 3 upper portions of support bracket conveniently places the location to shutoff board 4, and the oblique angle of support bracket lower part can improve and support intensity.

The upper portion of shutoff board bearing structure is equipped with shutoff board 4, and shutoff board 4 is the plectane of reinforced concrete structure or steel construction, has better intensity basis, can the lime-ash of stable support upper portion. The plugging plate 4 is provided with leachate discharge holes 12, and leachate which is collected and settled to the bottom can flow into the horizontal pipe 2 through the leachate discharge holes, so that the leachate is discharged.

The upper part of the plugging plate 4 is provided with a percolate reverse filtering layer, and the upper part of the percolate reverse filtering layer is provided with a coarse slag water seepage layer 11. The percolate reverse filtering layer comprises a lower layer grid mesh 8, geotechnical cloth 9 and an upper layer grid mesh 10, and the geotechnical cloth 9 is clamped between the lower layer grid mesh 8 and the upper layer grid mesh 10. The coarse slag permeable layer 11 and the percolate reverse filtering layer are utilized to filter the downward seeping rainwater and the like, so that the ash and the like are prevented from entering the horizontal pipe 2 to cause blockage.

The vertical shaft 5 is provided with a plurality of layers of drainage windows 6, the drainage windows 6 on each layer are uniformly arranged along the circumferential direction, and rainwater on the outer side of the vertical shaft 5 can enter the shaft through the drainage windows 6. The vertical shaft base 1 and the vertical shaft 5 are provided with the overhauling crawling ladder 7, and the overhauling crawling ladder 7 is arranged on the side walls of the shaft and the base, so that the overhauling personnel can transfer up and down.

The utility model provides a drainage shaft structure of low level shutoff, it is mainly when the lime-ash is stacked to shaft top (shaft top elevation 102), through on putting the support bracket 3 of shaft well seat position department down prefabricated shutoff board 4. The supporting bracket 3 is built when the vertical shaft is built in the early stage (or additional connection in the later stage is also available), and the plugging plate 4 is a reinforced concrete pattern plate or a steel plate with the diameter being 100-200 mm smaller than the inner diameter of the vertical shaft. Then laying a percolate reverse filtering layer, wherein the reverse filtering layer is two layers of geogrids with geotextile, covering a coarse ballast water seepage layer with the thickness of 2m and the diameter of coarse ballast after the reverse filtering layer is laid, and finally covering ash residues.

The utility model discloses a set up closure plate 4 in drainage flood shaft bottom to reduce the shaft in the subsequent load that the use received, reduce the damaged risk of shaft, solved ash yard or tailing storehouse when the shaft needs the shutoff in seal or use, the great easy damaged problem of shaft pit shaft lateral wall long-term atress has strengthened the security of drainage flood shaft in ash yard or tailing storehouse drainage flood system under not influencing technological function.

The aforesaid the utility model discloses basic example and each further alternative can the independent assortment in order to form a plurality of embodiments, are the utility model discloses can adopt and claim the embodiment of protection. In the scheme of the utility model, each selection example can be combined with any other basic examples and selection examples at will.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims (10)

1. The utility model provides an ash field shaft low level block structure, includes shaft base (1) and shaft pit shaft (5), the upper portion of shaft base (1) and the sub-unit connection of shaft pit shaft (5), the base passageway upper shed of shaft base (1) is relative with the pit shaft passageway lower shed of shaft pit shaft (5), its characterized in that: and a plugging plate supporting structure is arranged at the top of a base channel of the vertical shaft base (1) or the bottom of a shaft channel of the vertical shaft (5), and a plugging plate (4) is arranged at the upper part of the plugging plate supporting structure.

2. The ash yard shaft low-level plugging structure of claim 1, wherein: the single side or the double sides of the vertical shaft base (1) are respectively connected with the horizontal pipes (2), and the openings of the single side or the double sides of the base channel of the vertical shaft base (1) are respectively opposite to the openings of the pipeline ends of the horizontal pipes (2).

3. The ash field shaft low-level plugging structure of claim 1 or 2, wherein: the bottom of the channel of the vertical shaft base (1) is a blind hole, and the bottom of the blind hole is provided with an inverted frustum structure.

4. The ash yard shaft low-level plugging structure of claim 1, wherein: the closure plate support structure is a support bracket (3) arranged along the circumferential direction, the support bracket (3) is of at least three block structures, or the support bracket (3) is of a whole annular structure.

5. The ash field shaft low-level plugging structure of claim 4, wherein: the cross-section of support bracket (3) be horizontally right trapezoid, the right angle of support bracket (3) sets up.

6. The ash yard shaft low-level plugging structure of claim 1, wherein: the plugging plate (4) is a circular plate with a reinforced concrete structure or a steel structure.

7. The ash yard shaft low-level plugging structure of claim 1, wherein: the vertical shaft (5) is provided with a plurality of layers of drainage windows (6), and the drainage windows (6) on each layer are uniformly arranged along the circumferential direction.

8. The ash field shaft low-level plugging structure of claim 1 or 7, wherein: the vertical shaft base (1) and the vertical shaft (5) are provided with an overhauling crawling ladder (7), and the overhauling crawling ladder (7) is arranged on the side walls of the shaft and the base.

9. The ash field shaft low-level plugging structure of claim 1 or 6, wherein: the plugging plate (4) is provided with a percolate discharge hole (12), the upper part of the plugging plate (4) is provided with a percolate reverse filtering layer, and the upper part of the percolate reverse filtering layer is provided with a coarse slag seepage layer (11).

10. The ash field shaft low-level plugging structure of claim 9, wherein: the reverse filtration layer of the percolate comprises a lower layer grid net (8), geotextile (9) and an upper layer grid net (10), wherein the geotextile (9) is clamped between the lower layer grid net (8) and the upper layer grid net (10).

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