Cofferdam diaphragm wall system for water taking hub

Abstract

The cofferdam diaphragm wall system comprises a cofferdam body, a seepage-proofing system is arranged in the cofferdam body, the seepage-proofing system comprises a first wall and a second wall, the first wall and the second wall respectively comprise a plurality of plain piles and concrete piles, and the plain piles and the concrete piles are arranged in the cofferdam body. The positions of the concrete piles are determined between the adjacent plain piles through positioning pieces, the adjacent piles are meshed with each other to form the first wall and the second wall, the space between the first wall and the second wall is filled with filler, the impermeable film is arranged on the upstream face of the cofferdam body, the impermeable system is arranged in the cofferdam body, the overall impermeable performance of the cofferdam body is improved, and the impermeable performance of the cofferdam body is improved. And meanwhile, the overall stability of the cofferdam body is enhanced through the arrangement of the anti-seepage system.

Description

TECHNICAL FIELD

[0001] The utility model relates to a cofferdam seepage prevention wall system for water taking hub. BACKGROUND

[0002] The earth-rock cofferdam is formed by earth-rock filling, and is mostly used as an upstream and downstream transverse cofferdam, which can fully utilize local materials, has strong adaptability to foundation, and has simple construction technology. According to whether the foundation pit is allowed to be submerged, the earth-rock cofferdam is divided into a water passing cofferdam and a water non-passing cofferdam. The earth-rock cofferdam is formed by earth-rock filling, and is mostly used as an upstream and downstream transverse cofferdam, which can fully utilize local materials, has strong adaptability to foundation, and has simple construction technology. SUMMARY

[0003] In order to solve the above problems in the prior art, the utility model provides a cofferdam seepage prevention wall system for a water taking hub, which is used for improving the overall stability and seepage prevention capacity of the cofferdam.

[0004] In order to achieve the above purpose, the utility model provides the following technical scheme: a cofferdam seepage prevention wall system for a water taking hub, comprising a first wall and a second wall, wherein the first wall and the second wall each comprise a plurality of plain piles and concrete piles, the concrete piles are determined by positioning pieces between adjacent plain piles to realize mutual engagement of adjacent piles to form the first wall and the second wall, and the first wall and the second wall are filled with a filler.

[0005] Further, the plain piles and the concrete piles have the same diameter, the plain piles are formed by splicing a plurality of first sleeves with the same length along the length direction to form pouring cavities, the first sleeves are symmetrically provided with first engagement portions, the concrete piles are formed by splicing a plurality of second sleeves with the same length along the length direction to form pouring cavities, the second sleeves are provided with second engagement portions corresponding to the first engagement portions, and the first engagement portions and the second engagement portions are mutually engaged and clamped.

[0006] Further, the positioning pieces comprise a plurality of splicing tracks symmetrically arranged, the splicing tracks are laid on both sides along a pile laying path, the splicing tracks are provided with limiting portions, the limiting portions can be moved and adjusted in position along the splicing tracks, and the limiting portions are used for positioning the engagement position between the plain piles and the concrete piles.

[0007] Further, the limiting part comprises a plurality of limiting blocks, and a telescopic adjusting part is arranged between adjacent limiting blocks, which is used for adjusting and fixing the spacing between the limiting blocks. The spacing between adjacent limiting blocks is the spacing between adjacent occlusion positions. The front side edge of the limiting block is attached to the outer wall of the adjacent sleeve ring, and the front end head of the limiting block abuts against the occlusion position.

[0008] Further, the first occlusion part comprises a notch arranged on the first sleeve side edge, and a recess end is arranged on the middle part of the notch towards the inside of the first sleeve. The second occlusion part comprises a protruding end arranged on the corresponding recess end of the second sleeve.

[0009] Further, the locking part is arranged between the adjacent first sleeves in the length direction and between the adjacent second sleeves in the length direction. The locking part comprises an inner thread arranged on the upper end of the first sleeve and the upper end of the second sleeve, and an outer thread arranged on the lower end of the first sleeve and the lower end of the second sleeve, which is connected with the inner thread.

[0010] Further, the locking part is arranged between the adjacent first sleeves in the length direction and between the adjacent second sleeves in the length direction. The locking part comprises a step surface arranged on the upper end of the first sleeve and the upper end of the second sleeve. A plurality of clamping grooves are arranged on the upper end of the first sleeve and the upper end of the second sleeve. A first inclined surface is arranged on the side edge of the clamping groove. A protruding end is arranged on the lower end of the first sleeve and the lower end of the second sleeve, which corresponds to the step surface. A telescopic clamping block is arranged on the protruding end corresponding to the clamping groove. A second inclined surface is arranged on the lower end surface of the telescopic clamping block and the side edge towards the first inclined surface.

[0011] Further, the water diversion side of the weir body is provided with an anti-scour layer for preventing scouring. The anti-scour layer is arranged as a reinforced stone cage slope protection layer or a sand gravel slope protection layer. A permeation prevention film is arranged between the sand gravel slope protection layer and the water side.

[0012] Beneficial effects: By arranging the permeation prevention film on the water side of the weir body and the permeation prevention system inside the weir body, the overall permeation prevention performance of the weir body is improved, and the overall stability of the weir body is also enhanced by the arrangement of the permeation prevention system. The permeation prevention system comprises a first wall and a second wall, and both the first wall and the second wall are occlusion piles. In order to ensure the permeation prevention performance of the occlusion position of the occlusion pile, the lower placement positions of the first sleeve and the second sleeve are positioned by the positioning member, so as to ensure the occlusion tightness between the occlusion piles and the forming quality of the pile body, and indirectly improve the permeation prevention performance of the wall body. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is a schematic diagram of the weir permeation prevention wall system.

[0014] Figure 2 It is a schematic diagram of the second kind of first wall / second wall pile driving.

[0015] Figure 3 It is a schematic diagram of the second kind of locking part.

[0016] Figure 4 for Figure 3 split schematic diagram;

[0017] Figure 5 for the first sleeve locking part schematic diagram;

[0018] Figure 6 for the card slot schematic diagram;

[0019] Figure 7 for the telescopic card block schematic diagram;

[0020] Figure 8 for the first wall / second wall piling schematic diagram;

[0021] Figure 9 for the first locking part schematic diagram;

[0022] Figure 10 for the positioning member side schematic diagram.

[0023] Reference signs: 1, weir body; 2, impermeable body; 21, first wall; 22, second wall; 3, plain pile; 4, concrete pile; 5, positioning member; 51, splicing track; 52, limiting part; 521, limiting block; 522, telescopic adjusting part; 6, filler; 7, first sleeve; 8, second sleeve; 9, first engagement part; 91, notch; 92, recess end; 10, second engagement part; 101, protruding end; 11, locking part; 12, scour protection layer; 121, impermeable membrane; 13, card slot; 14, telescopic card block; 15, internal thread; 16, external thread. DETAILED DESCRIPTION

[0024] In order to further illustrate the technical means and effects adopted by the utility model to achieve the predetermined utility model purposes, the specific embodiments, structures, features and effects according to the utility model are described in detail as follows in combination with the drawings and preferred embodiments.

[0025] Referring to the drawings, the utility model discloses a kind of weir structures, including weir body, impermeable body, first wall, second wall, plain pile, concrete pile, positioning member, filler, first sleeve, second sleeve, first engagement part, second engagement part, locking part, scour protection layer and impermeable membrane. Figures 1-10The utility model provides a cofferdam anti -seep wall system for water taking pivot, including weir body 1, weir body 1 is earth and stone cofferdam, and the water side of weir body 1 is equipped with the anti -scouring of scouring layer 12, and scouring layer 12 is arranged as reinforced stone mattress slope protection layer or sand pebble slope protection layer, and the sand pebble slope protection layer is laid with anti -seep membrane 121 between the water side, and the weir body 1 is protected first to the first heavy anti -seep, then is equipped with the anti -seep body 2 system in weir body 1, and the anti -seep body 2 system includes first wall 21 and second wall 22, and first wall 21 and second wall 22 are filled with filling 6, and filling 6 can select coarse sand, but is not limited to coarse sand, and can also select broken stone, soil and the like. In order to ensure the anti -seep performance of first wall 21 and second wall 22, the forming quality of first wall 21 and second wall 22 needs to be strictly controlled, and first wall 21 and second wall 22 all include multiple plain piles 3 and concrete piles 4, and the concrete pile 4 is equipped with a reinforcing cage. The position of concrete pile 4 is determined by positioning piece 5 between adjacent plain piles 3 to realize adjacent occlusion and form first wall 21 and second wall 22. The diameter of plain pile 3 and concrete pile 4 is same, and plain pile 3 adopts multiple first sleeves of same length to be spliced along the length direction and form pouring cavity, and locking portion 11 is arranged between adjacent first sleeves 7 in the length direction and between adjacent second sleeves 8 in the length direction, and in the application, locking portion 11 has two structures, so the occlusion portion corresponding to the sleeve is also different. Referring to as Figure 8 、 Figure 9 As shown in the first kind: the first sleeve 7 is symmetrically provided with the first occlusion portion 9, the concrete pile 4 adopts multiple second sleeves 8 of same length to be spliced along the length direction and form pouring cavity, the second sleeve 8 is provided with the second occlusion portion 10 corresponding to the first occlusion portion 9, the first occlusion portion 9 and the second occlusion portion 10 are mutually occluded and clamped, the first occlusion portion 9 includes the notch 91 arranged on the side of the first sleeve 7, the recessed end 92 is horizontally arranged in the middle of the notch 91 and faces the inside of the first sleeve, the second occlusion portion 10 includes the protruding end 101 provided with the recessed end 92 on the second sleeve 8, the alignment of the occlusion portion is realized through the recessed end 92 and the protruding end 101, and the step of cutting the pile during the forming of the existing occlusion bored pile is reduced, and the on-site construction efficiency is improved. The locking portion 11 set for the above-mentioned occlusion portion includes the inner thread 15 arranged on the upper end of the first sleeve 7 and the upper end of the second sleeve 8, the outer thread 16 connected with the inner thread 15 is arranged on the lower end of the first sleeve 7 and the lower end of the second sleeve 8, and then the connection between the upper sleeve and the lower sleeve is firm and close.

[0026] Referring to as Figures 2-7As shown, the first sleeve 7 of the second type is provided with a notch 91, which is the first engaging part 9, and the second sleeve 8 is a complete cylinder, and the outer wall of the second sleeve 8 can completely fit the notch 91. The corresponding locking part 11 includes a stepped surface provided on the upper end of the first sleeve 7 and the upper end of the second sleeve 8, and a plurality of clamping grooves 13 provided on the upper end of the first sleeve 7 and the second sleeve 8, and a first inclined surface extending on the side of the clamping groove 13, and a protruding end 101 provided on the lower end of the first sleeve 7 and the second sleeve 8 corresponding to the stepped surface, and a telescopic clamping block 14 provided on the protruding end 101 corresponding to the clamping groove 13, and a second inclined surface provided on the lower end surface of the telescopic clamping block 14 and the side facing the first inclined surface, and when the protruding end 101 of the adjacent sleeve is lowered to align with the stepped surface of the next sleeve, the second inclined surface of the lower end surface of the telescopic clamping block 14 will be abutted by the side wall of the stepped surface to shrink inward, and when the telescopic clamping block 14 reaches the clamping groove 13, the spring of the telescopic clamping block 14 will be reset to be clamped in the clamping groove 13 to realize the clamping of the adjacent sleeves. When it is necessary to disassemble, rotate the sleeve, and the second inclined surface of the telescopic clamping block 14 facing the first inclined surface will retract the telescopic clamping block 14 away from the clamping groove 13, which is convenient and fast. The structure of the locking part 11 is not limited to the above structure, and a thread can be used to realize the connection of the upper and lower sleeves, which is convenient for pulling the sleeve during pouring.

[0027] As shown in Figure 2 , Figure 8 , Figure 10 In order to ensure the verticality of the first sleeve 7 and the second sleeve 8 and the stable engagement of the adjacent sleeves, a positioning member 5 is provided, which includes a plurality of segmented splicing tracks 51 symmetrically arranged, the splicing tracks 51 are laid along the pile arrangement path on both sides, a limiting part 52 is arranged on the splicing track 51, the limiting part 52 can move and adjust the position along the splicing track 51, thereby realizing the engagement positioning of different direct piles, the limiting part 52 includes a plurality of limiting blocks 521, a telescopic adjusting part 522 is arranged between the adjacent limiting blocks 521, the telescopic adjusting part 522 is a V-shaped hinged rod, a sharp tapered part capable of being inserted into the soil body is arranged on the lower end of the V-shaped hinged rod, the V-shaped hinged rod is unfolded to determine the distance between the adjacent limiting blocks 521 according to the engagement degree between the pile bodies, the front end side of the limiting block 521 is attached to the annular outer wall of the adjacent sleeve, and the front end of the limiting block 521 is abutted at the engagement position, thereby realizing the positioning of the position during the lowering of the pile bodies, ensuring that the engagement positions of the pile bodies are the same, and preventing the leakage problem caused by the incorrect engagement position, and when the engagement pile is completed for a period of pouring, the position of the limiting part 52 on the splicing track 51 is adjusted again to continuously position the subsequent engagement pile position, without the need to set a large number of positioning members 5.

[0028] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any form. Although the present application has been disclosed with preferred embodiments, it is not intended to limit the present application. Any person skilled in the art can make minor changes or modifications to the disclosed technical content, or make equivalent embodiments with equivalent changes, without departing from the technical solution of the present application. Any modification, equivalent change or modification of the above embodiments, which does not depart from the technical solution of the present application, is still within the scope of the technical solution of the present application.

Claims

1. A cofferdam diaphragm wall system for a water intake hub comprising a cofferdam body (1), characterized in that: The weir body (1) is provided with an anti-seepage body (2) system, the anti-seepage body (2) system includes a first wall (21) and a second wall (22), the first wall (21) and the second wall (22) each include a plurality of plain piles (3) and concrete piles (4), the positions of the concrete piles (4) are determined by positioning members (5) between adjacent plain piles (3) to realize mutual engagement of adjacent piles to form the first wall (21) and the second wall (22), and the first wall (21) and the second wall (22) are filled with a filler (6).

2. The diaphragm wall system for a water intake hub according to claim 1, characterized in that: The diameter of the plain pile (3) and the concrete pile (4) is the same, the plain pile (3) is formed by splicing a plurality of first sleeves (7) with the same length along the length direction to form a pouring cavity, the first sleeve (7) is symmetrically provided with a first engagement part (9), the concrete pile (4) is formed by splicing a plurality of second sleeves (8) with the same length along the length direction to form a pouring cavity, the second sleeve (8) is provided with a second engagement part (10) corresponding to the first engagement part (9), and the first engagement part (9) and the second engagement part (10) are engaged with each other.

3. The diaphragm wall system for a water intake hub according to claim 2, wherein: The positioning member (5) includes a plurality of splicing tracks (51) symmetrically arranged, the splicing tracks (51) are laid on both sides along the pile laying path, the splicing track (51) is provided with a limiting part (52), the limiting part (52) can move and adjust the position along the splicing track (51), and the limiting part (52) is used for positioning the engagement position between the plain pile (3) and the concrete pile (4).

4. The diaphragm wall system for a water intake hub according to claim 3, wherein: The limiting part (52) includes a plurality of limiting blocks (521), a telescopic adjusting part (522) is arranged between adjacent limiting blocks (521), the telescopic adjusting part (522) is used for adjusting and fixing the spacing between the limiting blocks (521), the spacing between adjacent limiting blocks (521) is the spacing between adjacent engagement positions, the front side edge of the limiting block (521) is attached to the outer wall of the adjacent sleeve, and the front end head of the limiting block (521) abuts against the engagement position.

5. The diaphragm wall system for a water intake hub according to claim 4, wherein: The first engagement part (9) includes a notch (91) arranged on the side of the first sleeve (7), a recess end (92) is arranged at the middle of the notch (91) and horizontally towards the inside of the first sleeve (7), and the second engagement part (10) includes a protruding end (101) arranged on the second sleeve (8) corresponding to the recess end (92).

6. The diaphragm wall system for a water intake hub according to claim 5, wherein: Locking parts (11) are arranged between adjacent first sleeves (7) in the length direction and between adjacent second sleeves (8) in the length direction, the locking part (11) includes internal threads (15) arranged on the upper ends of the first sleeve (7) and the second sleeve (8), and external threads (16) connected with the internal threads (15) are arranged on the lower ends of the first sleeve (7) and the second sleeve (8).

7. The diaphragm wall system for a water intake hub according to claim 4, wherein: The length direction adjacent first sleeve (7) and length direction adjacent second sleeve (8) are provided with locking part (11), the locking part (11) includes the first sleeve (7) upper end and second sleeve (8) upper end are provided with step surface, the first sleeve (7) and second sleeve (8) upper end are provided with multiple clamping groove (13), the clamping groove (13) side extends and is provided with first inclined plane, the first sleeve (7) and second sleeve (8) lower end correspond to step surface and are provided with convex end (101), the convex end (101) correspond to clamping groove (13) and are provided with telescopic clamping block (14), the telescopic clamping block (14) lower end surface and the side towards first inclined plane are provided with second inclined plane.

8. The diaphragm wall system for a water intake hub according to claim 6 or 7, characterized in that: The water side of the weir body (1) is provided with an anti-scouring layer (12), the anti-scouring layer (12) is set as a reinforced stone cage slope protection layer or a sand pebble slope protection layer, a seepage-proof membrane (121) is laid between the sand pebble slope protection layer and the water side.

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