Waterproof structure for transverse seam of reservoir dam

Abstract

The utility model provides a water-proof structure of a reservoir dam transverse joint, which comprises a water-stop strip and an asphalt water-stop well which are arranged across the transverse joint, an asphalt hemp rope which is filled and fixed by polyethylene cement is arranged at the welt of the outer side of the water-stop strip, hot asphalt is poured into the allowance of the transverse joint, and the asphalt water-stop well is filled with a well plug formed by the hot asphalt. According to the waterproof structure, the heating element is introduced to be matched with the drainage pipe at the bottom to discharge aged asphalt, and subsequent refilling is facilitated; meanwhile, the asphalt hemp rope which is filled and fixed by polyethylene plaster is added to the welt of the outer side of the water stop strip, the asphalt hemp rope can be replaced in an extrusion filling mode after being detached under the condition that the water stop strip is aged, and the problem that the water stop strip is difficult to replace due to aging is effectively solved.

Description

Technical Field

[0001] This utility model relates to the technical field of waterproof structure for horizontal joints of dams, and in particular to a waterproof structure for horizontal joints of reservoir dams. Background Technology

[0002] In the field of water conservancy engineering, concrete gravity dams have become a commonly used dam type in water conservancy and hydropower construction due to their excellent stability and load-bearing capacity. Permanent transverse joints, as an important component of the concrete gravity dam structure, directly affect the safety and service life of the dam due to their waterproofing performance.

[0003] Currently, the industry commonly uses asphalt waterproofing devices to waterproof permanent transverse joints. While this technology can meet basic waterproofing requirements for a certain period, its inherent defects gradually become apparent as the service life increases.

[0004] On the one hand, asphalt filler has aging problems, and it is difficult to replace aged asphalt, which seriously affects the water-stopping effect;

[0005] On the other hand, the waterstops cannot be replaced after they age, which puts the entire horizontal joint waterproofing system at risk of failure and threatens the safe operation of the reservoir dam.

[0006] Therefore, there is an urgent need to develop a waterproof structure for the horizontal joints of reservoir dams that can effectively solve the problems of asphalt aging and waterstop aging, and is replaceable.

[0007] In view of this, the inventor has specifically designed a waterproof structure for the horizontal joints of a reservoir dam, which leads to this invention. Utility Model Content

[0008] To solve the above problems, the technical solution of this utility model is as follows:

[0009] A waterproof structure for the transverse joint of a reservoir dam includes a waterstop sheet laid across the transverse joint and an asphalt waterstop well. The outer edge of the waterstop sheet is fitted with asphalt hemp rope filled and fixed with polyethylene mortar. The excess of the transverse joint is filled with hot asphalt. The asphalt waterstop well is filled with a plug made of hot asphalt. A vertical tubular heating element is installed in the plug for introducing steam or electric heating. The bottom of the asphalt waterstop well is provided with a drain pipe for discharging the hot asphalt.

[0010] Preferably, the waterstop is provided in two layers and is arranged on the upstream and downstream sides of the dam's transverse joint, and the asphalt waterstop well is arranged across the joint between the two waterstops.

[0011] Preferably, the water-stopping sheet is a water-stopping copper sheet.

[0012] Preferably, the water-stopping plate is 0.5-2m away from the dam surface and buried 40cm into the foundation cushion layer of the dam.

[0013] Preferably, the foundation cushion layer is provided with a number of anchor bars that extend into the underground rock strata vertically.

[0014] Preferably, the foundation cushion layer is micro-expansion concrete with its front surface roughened.

[0015] Preferably, the asphalt stop well is formed by two symmetrically arranged V-shaped precast well walls, the diameter of the asphalt stop well is 200-400mm, and it extends from the foundation of the dam upwards to the top of the dam.

[0016] Preferably, the heating element is an electrode steel bar.

[0017] Preferably, the heating element is an iron pipe.

[0018] Preferably, the water-stopping element includes a sheet-like water-stopping wing, water-stopping edges extending outward along both sides of the water-stopping wing, and a positioning edge protruding from the middle of the water-stopping wing and positioned and fitted with the transverse joint of the dam.

[0019] The beneficial effects of this utility model are as follows:

[0020] This utility model's waterproof structure, compared to traditional dam sealing structures, introduces a heating element into the asphalt sealing well to melt the asphalt. This, combined with a drainage pipe at the bottom, removes aged asphalt, facilitating subsequent refilling. Simultaneously, the outer edge of the sealing plate is reinforced with polyethylene sealant and asphalt-impregnated hemp rope, which can be removed and replaced by compression filling when the outer sealing layer ages. Therefore, this structure effectively solves the problem of difficult replacement of aging sealing layers, providing a practical solution for dam joint sealing and significantly improving the reliability and durability of the dam's horizontal joint waterproofing system. Attached Figure Description

[0021] The accompanying drawings, which are provided to further illustrate the present invention and constitute a part of the present invention, illustrate exemplary embodiments of the present invention and are used to explain the present invention, but do not constitute an undue limitation of the present invention.

[0022] in:

[0023] Figure 1 This is a partial structural schematic diagram highlighting the water-stop sheet in this utility model;

[0024] Figure 2 This is a partial structural schematic diagram highlighting the asphalt water-stopping well in this utility model;

[0025] Figure 3 This is one of the structural diagrams showing the connection between the water-stopping structure and the dam foundation of this utility model;

[0026] Figure 4 This is the second diagram of the connection structure between the water-stopping structure and the dam foundation of this utility model;

[0027] Figure 5 This is a detailed drawing of the water-stop sheet in this utility model.

[0028] Label Explanation:

[0029] 100. Horizontal joint; 110. Polyethylene putty; 120. Asphalt hemp rope; 130. Asphalt; 200. Waterstop plate; 210. Waterstop wing; 220. Waterstop edge; 230. Positioning edge; 300. Asphalt waterstop well; 310. Well plug; 320. Precast well wall; 321. Well wall body; 322. Connecting edge; 400. Foundation cushion layer; 410. Anchor bar; 500. Heating element. Detailed Implementation

[0030] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer and more understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model. Example 1

[0031] Please see Figures 1 to 5 This is a waterproof structure for the transverse joint of a reservoir dam, which is the preferred embodiment of the present utility model. It includes two water-stop plates 200 arranged across the transverse joint 100 and an asphalt water-stop well 300 arranged between the two water-stop plates 200 across the joint.

[0032] Specifically, such as Figure 1 As shown, the outer edge of the waterstop 200 is fitted with polyethylene putty 110 and the asphalt hemp rope 120 is filled and fixed. The transverse joint 100 between the two waterstops 200 is filled with hot asphalt 130. In this embodiment, the transverse joint 100 on the inner side of the waterstop 200 is filled with foam plastic board. The part of the transverse joint 100 outside the foam plastic board can be grouted with asphalt 130.

[0033] In addition, combined Figure 3 , 4 The 100mm transverse joint contains 130mm asphalt, 200mm water-stopping sheet, and 120mm asphalt hemp rope, all of which are embedded in the 400-40cm foundation cushion layer of the dam.

[0034] like Figure 2 As shown, the asphalt stop well 300 is filled with a plug 310 made of hot asphalt 130. A vertical tubular heating element 500 is installed in the plug 310 for introducing steam or electric heating. The bottom of the asphalt stop well 300 is provided with a drain pipe (not shown in the figure) for discharging the hot asphalt 130.

[0035] Specifically, in this embodiment, the asphalt stop well 300 is formed by two symmetrically arranged V-shaped precast well walls 320. The diameter of the asphalt stop well 300 is 200-400mm, and it extends from the foundation of the dam upwards to the top of the dam.

[0036] The precast well wall 320 includes a V-shaped well wall body 321 and connecting edges 322 extending outward symmetrically from both sides of the well wall body 321. The connecting edges 322 of the two precast well walls 320 are arranged in parallel, and their spacing is consistent with the width of the transverse joint 100. This allows the asphalt 130 injected into the asphalt waterstop well 300 to form an integral whole with the asphalt 130 injected into the transverse joint 100, forming an integral whole between the two waterstop plates 200, achieving a better waterproof effect. When the aging asphalt 130 is melted and cleaned, the asphalt 130 in the transverse joint 100 can also flow into the asphalt waterstop well 300 through the gap between the two precast well walls 320, and finally be discharged through the drainage pipe.

[0037] Preferably, in this embodiment, the waterstop 200 is provided in two layers and is arranged on the upstream and downstream sides of the dam transverse joint 100, and the asphalt waterstop well 300 is arranged across the joint between the two waterstop 200. The waterstop 200 is a waterstop copper sheet.

[0038] like Figure 5 As shown, the water-stopping component includes a sheet-like water-stopping wing 210, a water-stopping edge 220 extending outward or vertically along both sides of the water-stopping wing 210, and a positioning edge 230 protruding from the middle of the water-stopping wing 210 and positioned and fitted with the transverse joint 100 of the dam. In this embodiment, the positioning edge 230 has a U-shaped or V-shaped bend opening shape and forms an integral part with the water-stopping wings 210 on both sides. The asphalt hemp rope 120 is fitted into the opening of the positioning edge 230.

[0039] Preferably, the water-stopping plate 200 is 0.5-2m away from the dam surface.

[0040] Preferred, such as Figure 2 , 3 As shown, several anchor bars 410 are vertically installed in the foundation cushion layer 400, extending into the underground rock layer. In this embodiment, the anchor bars 410 are two rows of ⌀22 anchor bars 410, with a length of 2050mm and an insertion depth of 500mm into the rock.

[0041] Preferred, such as Figure 2 , 3 As shown, the foundation cushion layer 400 is made of micro-expansion concrete and its front surface is roughened.

[0042] Preferably, in this embodiment, the heating element 500 is an electrode steel bar. The electrode steel bar is heated, and a drainage pipe is set at the bottom of the asphalt stop well 300 to facilitate the discharge of the aged asphalt 130 and the refilling. Example 2

[0043] A waterproof structure for the horizontal joint of a reservoir dam, which differs from Embodiment 1 in that the heating element 500 is an iron pipe.

[0044] Hot steam or electric heating can be conveniently introduced through iron pipes to melt asphalt 130.

[0045] The beneficial effects of this utility model are as follows:

[0046] Compared to traditional dam waterproofing structures, this utility model's waterproofing structure introduces a heating element 500 into the asphalt waterproofing well 300 to melt the asphalt 130. This melted asphalt 130 is then drained through a bottom drainage pipe, facilitating subsequent refilling. Simultaneously, the outer edge of the waterproofing plate 200 is reinforced with polyethylene putty 110 and asphalt-impregnated hemp rope 120, allowing for removal and replacement via compression filling when the outer waterproofing layer ages. This structure effectively solves the problem of difficult replacement of aging waterproofing layers, providing a practical solution for dam joint waterproofing and significantly improving the reliability and durability of the dam's transverse joint waterproofing system.

[0047] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any non-substantial improvements made using the inventive concept and technical solution of the present invention, or the direct application of the inventive concept and technical solution to other situations without modification, are all within the protection scope of the present invention.

Claims

1. A waterproof structure for the transverse joints of a reservoir dam, characterized in that, The system includes a waterstop plate (200) laid across the transverse joint (100) and an asphalt waterstop well (300). The outer edge of the waterstop plate (200) is fitted with asphalt hemp rope (120) filled and fixed with polyethylene putty (110). The transverse joint (100) is filled with hot asphalt (130). The asphalt waterstop well (300) is filled with a well plug (310) made of hot asphalt (130). The well plug (310) is equipped with a vertical tubular heating element (500) for introducing steam or electric heating. The bottom of the asphalt waterstop well (300) is provided with a drain pipe for discharging the hot asphalt (130).

2. The waterproof structure for the transverse joint of a reservoir dam according to claim 1, characterized in that, The waterstop plate (200) is provided in two layers and is arranged on the upstream and downstream sides of the transverse joint (100) of the dam. The asphalt waterstop well (300) is arranged across the joint between the two waterstop plates (200).

3. The waterproof structure for the transverse joint of a reservoir dam according to claim 1, characterized in that, The water-stopping sheet (200) is a water-stopping copper sheet.

4. The waterproof structure for the transverse joint of a reservoir dam according to claim 1, characterized in that, The waterstop plate (200) is 0.5-2m away from the dam surface and is buried 40cm into the foundation cushion layer (400) of the dam.

5. The waterproof structure for the transverse joint of a reservoir dam according to claim 4, characterized in that, The foundation cushion layer (400) is vertically provided with several anchor bars (410) that penetrate into the underground rock strata.

6. The waterproof structure for the transverse joint of a reservoir dam according to claim 4, characterized in that, The foundation cushion layer (400) is micro-expansion concrete with its front surface roughened.

7. The waterproof structure for the transverse joint of a reservoir dam according to claim 1, characterized in that, The asphalt stop well (300) is formed by two symmetrically arranged V-shaped precast well walls (320). The diameter of the asphalt stop well (300) is 200-400mm, and it extends from the foundation of the dam upwards to the top of the dam.

8. The waterproof structure for the transverse joint of a reservoir dam according to claim 1, characterized in that, The heating element (500) is an electrode steel bar.

9. The waterproof structure for the transverse joint of a reservoir dam according to claim 1, characterized in that, The heating element (500) is an iron pipe.

10. A waterproof structure for the transverse joint of a reservoir dam according to claim 1, characterized in that, The waterstop plate (200) includes a sheet-shaped waterstop wing (210), a waterstop edge (220) extending outward along both sides of the waterstop wing (210), and a positioning edge (230) protruding from the middle of the waterstop wing (210) and positioned and fitted with the transverse joint (100) of the dam.

Images