earth-rock dam core
By constructing the core wall of the earth-rock dam using the method of stacking precast clay bricks and injecting grout into grouting holes, the problem of weather-related impacts on traditional clay core wall construction was solved, achieving controllable construction quality and improved dam stability.
Patent Information
- Application Number
- CN202522638627.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-12
- Publication Date
- 2026-11-03
- Estimated Expiration
- 2035-12-12
AI Technical Summary
Traditional clay core wall construction is greatly affected by weather, and the moisture content is difficult to control, leading to construction delays and quality problems, which affect the safety of the dam.
The core wall of the earth-rock dam is constructed by stacking precast clay bricks and injecting cement grout through mortar holes to ensure the stability of the brick layer connection and its impermeability.
This ensured controllable construction quality and schedule, avoided uneven settlement and leakage, and improved the stability and impermeability of the core wall of the earth-rock dam.
Smart Images
Figure CN224931012U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of earth-rock dam construction technology, specifically to an earth-rock dam core wall. Background Technology
[0002] Earth-rock dams are one of the oldest and most widely used dam types in human water conservancy history, and their seepage prevention often uses clay core walls. Traditionally, clay core walls are made by selecting qualified seepage-proof clay material, spreading it on-site, drying it, or sprinkling it with water to adjust its moisture content, and then compacting it with a vibratory roller. Therefore, it is greatly affected by the weather, especially in rainy areas, where rainfall can seriously affect the moisture content of the clay material, causing it to become unusable due to excessive moisture content, leading to work stoppages and material shortages, and causing delays in the construction period of the clay core wall. At the same time, it is difficult to accurately control the quality of on-site compaction of the seepage-proof clay material, and phenomena such as excessive thickness, incomplete compaction, or under-compaction often occur. This may not only lead to uneven settlement of the dam body later, but also create hidden seepage hazards, threatening the safety of the dam body. Utility Model Content
[0003] The main purpose of this utility model is to propose a core wall for earth-rock dams, which aims to solve the above-mentioned problems.
[0004] To achieve the above objectives, this utility model proposes a core wall for an earth-rock dam, comprising multiple brick layers stacked in a vertical direction, each brick layer including multiple precast clay bricks connected along a first direction and / or a second direction, each precast clay brick comprising: The brick body has corresponding first and second sidewalls; The first connecting structure includes a convex ridge and a groove that fit together in a concave-convex manner. The convex ridge is disposed on the first sidewall and located in the middle of the first sidewall. The groove is formed in the second sidewall and is disposed corresponding to the convex ridge. The second connection structure includes a grouting hole that penetrates the middle of the brick body in a vertical direction and is used to inject cement anti-seepage grout. Among them, the first direction, the second direction, and the up and down directions are perpendicular to each other.
[0005] Optionally, the cross-section of the protruding ridge is arranged in an isosceles trapezoidal shape; Correspondingly, the cross-section of the groove is arranged in an isosceles trapezoid to match the convex ridge.
[0006] Optionally, the lengths of the brick in the first direction, the second direction, and the up-down direction are 400mm, 260mm, and 150mm, respectively. The upper bottom edge, lower bottom edge, and height of the protruding ridge are 30mm, 60mm, and 30mm respectively.
[0007] Optionally, the diameter of the grouting hole is 10 mm.
[0008] Optionally, the first sidewall and the second sidewall are disposed opposite each other in the vertical direction, and the protruding ridge extends along the first direction or the second direction; Among them, the first direction, the second direction, and the up and down directions are perpendicular to each other.
[0009] Optionally, the clay precast brick further includes two third connecting structures, which are respectively disposed on the two side walls of the brick body in the second direction. Each third connecting structure includes at least one protrusion and at least one recess, and the protrusion and the recess are engaged.
[0010] Optionally, the brick extends along the first direction; The middle portions of the two side walls of the brick in the second direction are respectively recessed, so that two protrusions and one recess are formed on the two side walls of the brick in the second direction along the first direction, the two protrusions are located on both sides of the recess in the first direction, and the recess penetrates the brick in the vertical direction.
[0011] Optionally, the length of the groove in the first direction is equal to the sum of the lengths of the two protrusions in the first direction.
[0012] In the technical solution of this utility model, the core wall of the earth-rock dam is formed by stacking and connecting multiple prefabricated clay bricks. Compared with the traditional earth-rock dam clay core wall formed by spreading, drying, and compacting impermeable clay on site, the uniformity and integrity of the core wall quality are not affected by the weather, which can avoid uneven settlement and leakage problems in the later stage, and the construction quality and progress are controllable. At the same time, in the process of stacking and connecting multiple prefabricated clay bricks, two adjacent prefabricated clay bricks in one direction (the direction in which the first sidewall and the second sidewall are set sequentially) are connected by the first connecting structure to achieve a concave-convex fit. The raised edge of one clay precast brick matches the groove of another clay precast brick, thus improving the connection between the two clay precast bricks and ensuring the stability of the earth-rock dam core wall. In addition, after multiple clay precast bricks are stacked, cement grout is injected into the grouting hole of the top clay precast brick. The cement grout flows downward under gravity, so that not only are all clay precast bricks filled with cement grout to improve impermeability, but the cement grout also fills the gaps between the bricks and solidifies, further improving the impermeability and stability of the earth-rock dam core wall. Attached Figure Description
[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.
[0014] Figure 1 A partial structural schematic diagram of an embodiment of the core wall of an earth-rock dam provided by this utility model; Figure 2 for Figure 1 A schematic diagram of the structure of a medium clay precast brick at an angle; Figure 3 for Figure 1 A structural schematic diagram of medium clay precast bricks from another angle.
[0015] Explanation of icon numbers:
[0016] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0018] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.
[0019] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.
[0020] Earth-rock dams are one of the oldest and most widely used dam types in human water conservancy history, and their seepage prevention often uses clay core walls. Traditionally, clay core walls are made by selecting qualified seepage-proof clay material, spreading it on-site, drying it, or sprinkling it with water to adjust its moisture content, and then compacting it with a vibratory roller. Therefore, it is greatly affected by the weather, especially in rainy areas, where rainfall can seriously affect the moisture content of the clay material, causing it to become unusable due to excessive moisture content, leading to work stoppages and material shortages, and causing delays in the construction period of the clay core wall. At the same time, it is difficult to accurately control the quality of on-site compaction of the seepage-proof clay material, and phenomena such as excessive thickness, incomplete compaction, or under-compaction often occur. This may not only lead to uneven settlement of the dam body later, but also create hidden seepage hazards, threatening the safety of the dam body.
[0021] In view of this, the present invention provides a core wall 1000 for an earth-rock dam. Figures 1 to 3 An embodiment of the earth-rock dam core wall 1000 provided by this utility model.
[0022] Please see Figures 1 to 3 The earth-rock dam core wall 1000 includes multiple brick layers stacked in the vertical direction. Each brick layer includes multiple precast clay bricks 100 connected in a first direction and / or a second direction. Each precast clay brick 100 includes a brick body 1, a first connecting structure, and a second connecting structure. The brick body 1 has corresponding first and second sidewalls. The first connecting structure includes a convex ridge 2 and a groove 3 that are adapted to fit each other. The convex ridge 2 is provided on the first sidewall and is located in the middle of the first sidewall. The groove 3 is opened on the second sidewall and is provided corresponding to the convex ridge 2. The second connecting structure includes a grouting hole 4 that penetrates the middle of the brick body 1 in the vertical direction for injecting cement anti-seepage grout. The first direction, the second direction, and the vertical direction are perpendicular to each other.
[0023] In this utility model's technical solution, the core wall 1000 of the earth-rock dam is formed by stacking and connecting multiple pre-fabricated clay bricks 1. Compared to the traditional earth-rock dam clay core wall formed by spreading, drying, and compacting impermeable clay on-site, the uniformity and integrity of the core wall quality are not affected by weather, avoiding uneven settlement and leakage problems in the later stages, and the construction quality and progress are controllable. Simultaneously, during the stacking and connection of multiple pre-fabricated clay bricks 100, adjacent pre-fabricated clay bricks 100 in one direction (the direction in which the first sidewall and the second sidewall are sequentially arranged) achieve a concave-convex fit connection through the first connecting structure, that is, one of the two adjacent pre-fabricated clay bricks 100... The protruding edge 2 of brick 100 is matched with the groove 3 of another clay precast brick 100 to improve the connection between the two clay precast bricks 100, thereby ensuring the stability of the earth-rock dam core wall 1000. In addition, after the multiple clay precast bricks 100 are stacked, cement anti-seepage grout is injected into the grouting hole 4 of the uppermost clay precast brick 100. The cement anti-seepage grout flows downward under the action of gravity. In this way, not only are all the clay precast bricks 100 filled with cement anti-seepage grout, thereby improving the seepage prevention, but the cement anti-seepage grout can also fill the gaps between the multiple bricks 1 and solidify, further improving the seepage prevention and stability of the earth-rock dam core wall 1000.
[0024] It should be noted that in this utility model, the precast clay brick 100 is manufactured in a factory, unaffected by weather, and can achieve rapid construction in all weather conditions. Furthermore, the raw materials of the brick body 1, by weight, include 90-95 parts of impermeable clay and 5-10 parts of sodium-based bentonite. The permeability coefficient of the brick body 1 is not greater than 1.0 × 10⁻⁶. -6 The content of easily soluble and moderately soluble salts in water is not greater than 3% by mass, the content of organic matter is not greater than 2% by mass, the content of clay particles is 15%-40%, the plasticity index is 10-20, and the density is not less than 2.0 g / cm³.
[0025] It should also be noted that in this invention, the shapes of the protruding ridge 2 and the groove 3 are not limited; they can be rectangular, semi-circular, etc., as long as the protruding ridge 2 and the groove 3 can be adapted to form a concave-convex connection. For more details, please refer to [link to relevant documentation]. Figure 2 and Figure 3 In one embodiment of the present invention, the cross-section of the protruding ridge 2 is an isosceles trapezoid; correspondingly, the cross-section of the groove 3 is an isosceles trapezoid to fit the protruding ridge 2.
[0026] Furthermore, in one embodiment of this utility model, the length, width, and height of the brick body 1 in the first direction, the second direction, and the up and down direction are 400mm, 260mm, and 150mm respectively. Furthermore, the upper bottom edge, lower bottom edge, and height of the convex ridge 2 and the groove 3, which are arranged in an isosceles trapezoidal shape, are 30mm, 60mm, and 30mm respectively.
[0027] Specifically, in one embodiment of this utility model, the diameter of the grouting hole 4 is 10mm.
[0028] Specifically, in this invention, the positions of the first and second sidewalls are not limited; they only need to be arranged opposite each other to allow adjacent clay precast bricks 100 in one direction to fit together. For more details, please refer to... Figure 1 In one embodiment of this utility model, the first sidewall and the second sidewall are arranged opposite each other in the vertical direction, and the protruding rib 2 extends along the first direction or the second direction; wherein, the first direction, the second direction, and the vertical direction are mutually perpendicular to each other. Thus, in the vertical direction, any two adjacent clay precast bricks 100 are connected by the concave-convex fit of the first connecting structure, thereby improving the stability of the earth-rock dam core wall 1000 in the vertical direction.
[0029] For further details, please refer to Figures 1 to 3 The precast clay brick 100 further includes two third connecting structures, which are respectively disposed on the two side walls of the brick body 1 in the second direction. Each third connecting structure includes at least one protrusion 5 and at least one recess 6, with the protrusion 5 and the recess 6 engaging. Thus, in the second direction, any two adjacent precast clay bricks 100 can be engaged by the third connecting structures, thereby improving the stability of the earth-rock dam core wall 1000 in the second direction.
[0030] For further details, please refer to Figures 1 to 3 The brick body 1 extends along the first direction; the middle part of the two side walls of the brick body 1 in the second direction is recessed, so that two protrusions 5 and one recess 6 are formed on the two side walls of the brick body 1 in the second direction along the first direction, the two protrusions 5 are respectively disposed on both sides of the recess 6 in the first direction, and the recess 6 is disposed through the brick body 1 in the vertical direction.
[0031] For further details, please refer to Figure 1The length of the groove 3 in the first direction is equal to the sum of the lengths of the two protrusions 5 in the first direction. Thus, one of the clay precast bricks 100 can be snapped and fixed with two other clay precast bricks 100 arranged sequentially along the first direction, that is, two adjacent clay precast bricks 100 in the second direction are staggered and connected.
[0032] Specifically, the construction process of the core wall 1000 of the earth-rock dam is as follows: First, the brick body 1 is plastered with clay slurry. On the horizontal plane (i.e., the first direction and the second direction), adjacent brick bodies 1 are assembled in sequence to obtain the brick layer. On the vertical plane (i.e., the up and down direction), the protruding ribs 2 and the grooves 3 are engaged to realize the assembly of multiple brick layers. Then, cement anti-seepage grout is injected through the grouting holes 4. The grout fills the gaps between the brick bodies 1 and solidifies.
[0033] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.
Claims
1. A core wall for an earth-rock dam, characterized in that, The earth-rock dam core wall comprises multiple brick layers stacked in a vertical direction, each brick layer comprising multiple precast clay bricks connected along a first direction and / or a second direction, each precast clay brick comprising: The brick body has corresponding first and second sidewalls; The first connecting structure includes a convex ridge and a groove that fit together in a concave-convex manner. The convex ridge is disposed on the first sidewall and located in the middle of the first sidewall. The groove is formed in the second sidewall and is disposed corresponding to the convex ridge. The second connection structure includes a grouting hole that penetrates the middle of the brick body in a vertical direction and is used to inject cement anti-seepage grout. Among them, the first direction, the second direction, and the up and down directions are perpendicular to each other.
2. The core wall of an earth-rock dam as described in claim 1, characterized in that, The cross-section of the protruding ridge is arranged in an isosceles trapezoidal shape; Correspondingly, the cross-section of the groove is arranged in an isosceles trapezoid to match the convex ridge.
3. The core wall of an earth-rock dam as described in claim 2, characterized in that, The lengths of the brick in the first direction, the second direction, and the up and down direction are 400mm, 260mm, and 150mm, respectively. The upper bottom edge, lower bottom edge, and height of the protruding ridge are 30mm, 60mm, and 30mm respectively.
4. The core wall of an earth-rock dam as described in claim 1, characterized in that, The diameter of the grouting hole is 10 mm.
5. The core wall of an earth-rock dam as described in claim 1, characterized in that, The first sidewall and the second sidewall are disposed opposite each other in the vertical direction, and the protruding ridge extends along the first direction or the second direction.
6. The core wall of an earth-rock dam as described in claim 5, characterized in that, The clay precast brick also includes two third connecting structures, which are respectively disposed on the two side walls of the brick body in the second direction. Each third connecting structure includes at least one protrusion and at least one recess, and the protrusion and the recess are engaged.
7. The core wall of an earth-rock dam as described in claim 6, characterized in that, The brick body extends along the first direction; The middle portions of the two side walls of the brick in the second direction are respectively recessed, so that two protrusions and one recess are formed on the two side walls of the brick in the second direction along the first direction, the two protrusions are located on both sides of the recess in the first direction, and the recess penetrates the brick in the vertical direction.
8. The core wall of an earth-rock dam as described in claim 7, characterized in that, The length of the groove in the first direction is equal to the sum of the lengths of the two protrusions in the first direction.