Dam foundation sealing anti-seepage structure

Abstract

The utility model belongs to the technical field of anti-seepage construction, and particularly relates to a dam foundation sealing anti-seepage structure which comprises an anti-seepage wall, reinforcing plates are fixedly connected to one side of the anti-seepage wall through expansion bolts, the number of the reinforcing plates is two, the reinforcing plates are vertically arranged at intervals, and first fixing seats are welded to the reinforcing plates; the first fixing base is rotationally connected with one end of the first connecting rod and one end of the second connecting rod through connecting pins, the first connecting rod and the second connecting rod are adjacent left and right and are arranged in a crossed mode, the other end of the first connecting rod and the other end of the second connecting rod are rotationally connected with the second fixing base through connecting pins, and the second fixing base is fixedly arranged on the supporting column. The structural stability of the anti-seepage wall can be effectively improved through the reinforcing plates laid and installed in the extending direction of the anti-seepage wall; the X-shaped cross connecting rods form a truss structure, water pressure borne by the diaphragm wall is transmitted to the deeply-buried supporting columns, the structural stability of the diaphragm wall can be further improved, the construction difficulty of the supporting columns, the first connecting rods and the second connecting rods is low, and the influence on the project progress is small.

Description

Technical Field

[0001] This utility model belongs to the field of seepage prevention construction technology, specifically relating to a dam foundation sealing seepage prevention structure. Background Technology

[0002] Dam foundation seepage control is a crucial aspect of water conservancy projects, directly impacting the safety and durability of dams, dikes, and other water infrastructure. Cutoff walls, a common seepage control structure, are primarily used to cut off seepage paths in dam foundations, preventing problems such as dam instability, foundation liquefaction, and seepage damage caused by seepage. However, with the increasing scale of water conservancy projects and the growing complexity of geological conditions, traditional cutoff walls have revealed numerous problems in practical applications, necessitating technological innovation to improve their performance and reliability.

[0003] Traditional cutoff walls typically employ reinforced concrete structures, relying on the wall's inherent impermeability and strength to block seepage. However, this single-structure approach has the following limitations in practical applications:

[0004] Insufficient structural stability: The anti-seepage wall is subjected to the combined effects of water pressure, foundation deformation, and seepage force over a long period, making it prone to cracks and deformation. Especially under high water head pressure or complex geological conditions, the wall may experience localized damage, leading to increased leakage.

[0005] The reinforcement measures are complex: To improve the stability of the cutoff wall, existing technologies typically employ reinforcement measures such as anchor bolt support, deep grouting, or the addition of ribs. However, these methods have long construction cycles, high costs, and poor adaptability to complex geological conditions. For example, anchor bolt support requires the pre-embedding of a large number of anchor bolts, making construction difficult; deep grouting has high requirements for geological conditions and it is difficult to ensure the uniformity of grouting.

[0006] Stress concentration risk: Traditional reinforced structures often use rigid connections. When uneven settlement of the foundation occurs, stress concentration is likely to occur at the connection points, leading to structural damage. In addition, rigid connections are difficult to adapt to minor deformations of the foundation, which may accelerate wall cracking. Utility Model Content

[0007] To address the above problems, the purpose of this utility model is to provide a dam foundation sealing and seepage prevention structure that solves the problems of insufficient stability, complex construction, and stress concentration of traditional seepage prevention walls.

[0008] To achieve the above objectives, the present invention adopts the following technical solution: a dam foundation closed seepage prevention structure, including a seepage prevention wall, one side of which is fixed with a reinforcing plate by expansion bolts, the number of reinforcing plates being two and arranged at intervals, a fixing seat one welded to the reinforcing plate, the fixing seat one being rotatably connected to one end of a connecting rod one and a connecting rod two by a connecting pin, the connecting rod one and the connecting rod two being adjacent to each other on the left and right and arranged crosswise, the other end of the connecting rod one and the connecting rod two being rotatably connected to the fixing seat two by a connecting pin, the fixing seat two being fixed on a support column.

[0009] The beneficial effects of this utility model are as follows: the reinforcing plate laid and installed along the extension direction of the seepage barrier can effectively increase the structural stability of the seepage barrier; the X-shaped cross connecting rods form a truss structure, which transmits the water pressure on the seepage barrier to the deeply buried support column, which can further increase the structural stability of the seepage barrier. Moreover, the support column, connecting rod one, and connecting rod two are easy to construct and have little impact on the project progress.

[0010] To effectively ensure the stability of the connection between the fixed base 2 and the support column;

[0011] As a further improvement to the above technical solution: the support column is a reinforced concrete column structure, and the fixing seat 2 is welded to the steel reinforcement structure of the support column.

[0012] The beneficial effects of this improvement are: the second fixing seat can be directly welded to the steel reinforcement cage of the support column before the support column is poured, thereby achieving a stable connection with the support column.

[0013] In order to effectively improve the structural stability of the seepage barrier wall by using connecting rod one and connecting rod two;

[0014] As a further improvement to the above technical solution: the connecting rod one and the connecting rod two have the same structural size, and the axis of the support column is parallel to the side of the anti-seepage wall where the reinforcing plate is installed.

[0015] The beneficial effects of this improvement are: the connecting rods 1 and 2, which are arranged in an "X" shape, can stably connect the seepage barrier wall and the support column, and the support column, which is far away from the seepage point and buried at a greater depth, provides reliable support for the seepage barrier wall.

[0016] In order to improve the support effect of connecting rod one and connecting rod two;

[0017] As a further improvement to the above technical solution: both connecting rod one and connecting rod two are composed of a rod body and connecting ears welded to both ends of the rod body, and the connecting ears are provided with through holes for rotating insertion connecting pins.

[0018] The beneficial effects of this improvement are: the hinged connection allows connecting rod one and connecting rod two to rotate freely within a certain angle, reducing stress concentration and ensuring the stability and safety of the structure.

[0019] In order to effectively improve the structural stability of the seepage barrier wall by using reinforcing plates;

[0020] As a further improvement to the above technical solution: the reinforcing plate is a W-shaped steel strip structure, and the reinforcing plate is attached to one side of the anti-seepage wall.

[0021] The beneficial effects of this improvement are: the reinforcing plate, which is attached to one side of the seepage barrier wall, has strong bending resistance, can disperse pressure, and enhance the support strength of the seepage barrier wall.

[0022] To ensure the reinforcing plate is effectively fitted and installed on the waterproof wall;

[0023] As a further improvement to the above technical solution: a pressure plate is installed between the head end of the expansion bolt and the reinforcing plate, and the pressure plate is slidably fitted on the rod of the expansion bolt.

[0024] The beneficial effects of this improvement are: the pressure plate can evenly distribute the relatively concentrated pressure applied to the reinforcing plate by the expansion bolt head, avoiding excessive local pressure that could cause local deformation of the reinforcing plate and prevent the reinforcing plate from being effectively installed on the seepage barrier wall.

[0025] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model;

[0027] Figure 2 This is the front view of the present invention;

[0028] Figure 3 This is an enlarged view of A in this utility model;

[0029] In the diagram: 1. Waterproof wall; 2. Reinforcing plate; 3. Pressure plate; 4. Expansion bolt; 5. Connecting rod one; 51. Rod body; 52. Connecting lug; 6. Connecting rod two; 7. Support column; 8. Connecting pin; 9. Fixing seat one; 10. Fixing seat two. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in detail below with reference to the accompanying drawings. The description in this part is only exemplary and explanatory, and should not be used to limit the scope of protection of the present invention in any way.

[0031] Example 1:

[0032] like Figure 1 As shown in Figure 3: A dam foundation sealing and seepage prevention structure includes a seepage prevention wall 1. One side of the seepage prevention wall 1 is connected and fixed with a reinforcing plate 2 via expansion bolts 4. There are two reinforcing plates 2, spaced apart vertically. A fixing seat 9 is welded onto the reinforcing plate 2. The fixing seat 9 is rotatably connected to one end of a connecting rod 5 and a connecting rod 6 via a connecting pin 8. The connecting rods 5 and 6 are adjacent to each other and intersecting. The other ends of the connecting rods 5 and 6 are rotatably connected to a fixing seat 10 via a connecting pin 8. The fixing seat 10 is fixed to a support column 7 and is installed along the extension direction of the seepage prevention wall 1. The reinforcing plate 2 can effectively increase the structural stability of the seepage barrier wall 1; the X-shaped cross connecting rods form a truss structure, which transmits the water pressure on the seepage barrier wall 1 to the deeply buried support column 7, which can further increase the structural stability of the seepage barrier wall 1. Moreover, the support column 7, connecting rod 1 5, and connecting rod 2 6 are easy to construct and have little impact on the project progress. The support column 7 is a reinforced concrete column structure. The fixing seat 2 10 is welded to the steel reinforcement structure of the support column 7. The fixing seat 2 10 can be directly welded to the steel reinforcement skeleton of the support column 7 before the support column 7 is poured, thereby achieving a stable connection with the support column 7. The connecting rod 1 5 and connecting rod 2 The structural components 6 are identical in size. The axis of the support column 7 is parallel to the side of the seepage barrier wall 1 where the reinforcing plate 2 is installed. The connecting rods 5 and 6, arranged in an "X" shape, can stably connect the seepage barrier wall 1 and the support column 7. The support column 7, which is farther away from the leakage point and buried at a greater depth, provides reliable support for the seepage barrier wall 1. Both the connecting rod 5 and the connecting rod 6 consist of a rod body 51 and connecting ears 52 welded to both ends of the rod body 51. The connecting ears 52 have through holes for rotating insert connecting pins 8. The hinged connection allows the connecting rods 5 and 6 to rotate freely within a certain angle, reducing stress concentration. To ensure structural stability and safety, the reinforcing plate 2 is a W-shaped steel strip structure. The reinforcing plate 2 is fitted and installed on one side of the seepage barrier wall 1. The reinforcing plate 2 fitted and installed on one side of the seepage barrier wall 1 has strong bending resistance, can disperse pressure, and enhance the support strength of the seepage barrier wall 1. A pressure plate 3 is installed between the head end of the expansion bolt 4 and the reinforcing plate 2. The pressure plate 3 is slidably fitted on the rod of the expansion bolt 4. The pressure plate 3 can evenly disperse the relatively concentrated pressure applied to the reinforcing plate 2 by the head end of the expansion bolt 4, avoiding excessive local pressure that could cause local deformation of the reinforcing plate 2 and prevent the reinforcing plate 2 from being effectively fitted and installed on the seepage barrier wall 1.

[0033] The working principle of this technical solution is as follows: pour reinforced concrete anti-seepage wall 1, reserve installation holes for expansion bolts 4, attach W-shaped steel strip reinforcing plate 2 to the side wall of anti-seepage wall 1, insert expansion bolts 4 and fit pressure plate 3, tighten nuts to make pressure plate evenly press reinforcing plate 2, construct support column 7 on the outside of anti-seepage wall 1, before pouring, weld fixed seat 2 10 to the steel reinforcement skeleton, and hinge connecting rod 1 5 and connecting rod 2 6 to fixed seat 1 9 and fixed seat 2 10 through connecting pin 8 to form X-shaped cross support;

[0034] When water pressure acts on the cutoff wall 1, the reinforcing plate 2 disperses the pressure through the W-shaped cross section, and the connecting rod 5 and connecting rod 6 transfer the load to the support column 7, using the stability of the support column 7 buried deep in the foundation to resist lateral displacement; when the foundation settlement causes relative displacement between the cutoff wall 1 and the support column 7, the connecting rod 5 and connecting rod 6 rotate around the connecting pin 8 to avoid stress concentration caused by rigid connection; the reinforcing plate 2 fits tightly with the cutoff wall 1, inhibiting crack expansion and extending the seepage path.

[0035] It should be noted that, in this document, the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0036] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only for the purpose of helping to understand the method and core ideas of the present invention. The above descriptions are only preferred embodiments of the present invention. It should be noted that due to the limitations of textual expression, there are objectively infinite specific structures. For those skilled in the art, several improvements, modifications, or changes can be made without departing from the principles of the present invention, and the above technical features can also be combined in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of the present invention.

Claims

1. A dam foundation sealing and seepage prevention structure, characterized in that: The system includes a seepage barrier wall (1), one side of which is fixed with a reinforcing plate (2) by an expansion bolt (4). There are two reinforcing plates (2) and they are spaced apart vertically. A fixing seat (9) is welded onto the reinforcing plate (2). The fixing seat (9) is rotatably connected to one end of a connecting rod (5) and a connecting rod (6) by a connecting pin (8). The connecting rods (5) and (6) are adjacent to each other and are arranged crosswise. The other end of the connecting rods (5) and (6) is rotatably connected to a fixing seat (10) by a connecting pin (8). The fixing seat (10) is fixed on a support column (7).

2. The dam foundation sealing and seepage prevention structure according to claim 1, characterized in that: The support column (7) is a reinforced concrete column structure, and the fixing seat (10) is welded to the steel reinforcement structure of the support column (7).

3. The dam foundation sealing and seepage prevention structure according to claim 1, characterized in that: The connecting rod one (5) and the connecting rod two (6) have the same structural size, and the axis of the support column (7) is parallel to the side of the anti-seepage wall (1) on which the reinforcing plate (2) is installed.

4. The dam foundation sealing and seepage prevention structure according to claim 1, characterized in that: Both the first connecting rod (5) and the second connecting rod (6) are composed of a rod body (51) and connecting ears (52) welded to both ends of the rod body (51). The connecting ears (52) are provided with through holes for rotating insert connecting pins (8).

5. The dam foundation sealing and seepage prevention structure according to claim 1, characterized in that: The reinforcing plate (2) is a W-shaped steel strip structure, and the reinforcing plate (2) is attached to one side of the anti-seepage wall (1).

6. The dam foundation sealing and seepage prevention structure according to claim 1, characterized in that: A pressure plate (3) is installed between the head end of the expansion bolt (4) and the reinforcing plate (2), and the pressure plate (3) is slidably fitted on the rod of the expansion bolt (4).

Images