Water passing earth and rockfill dam
By setting up a reinforcing functional zone and a seepage-proof curtain grouting body in the center of the earth-rock dam, the problem of the earth-rock dam being unable to pass water was solved, the seepage prevention, stress resistance and deformation resistance of the dam body were improved, and the project cost was reduced.
Patent Information
- Application Number
- CN202422518786.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-17
- Publication Date
- 2025-10-31
- Estimated Expiration
- 2034-10-17
AI Technical Summary
The existing earth-rock dam cannot effectively carry water, which affects the safety of the dam body. It is necessary to add facilities such as concrete spillways, but there are problems with deformation coordination, structure and construction.
A reinforcement functional zone is set in the center of the dam body, and a seepage-proof curtain grouting body is embedded below it. The spillway is set above the reinforcement functional zone or on the outside of the downstream slope protection, using concrete or reinforced concrete materials to form a rigid seepage-proof body to support the flow of the spillway.
It enabled the normal flow of the spillway, enhanced the dam's seepage prevention, stress resistance and deformation resistance, reduced deformation and leakage, lowered project investment, and solved deformation inconsistency and structural problems.
Smart Images
Figure CN223497127U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of dam construction technology, specifically relating to a water-passing earth-rock dam. Background Technology
[0002] Earth-rock dams are the oldest type of dam and are currently the most widely used dam type in dam construction worldwide. The advantages of earth-rock dams include the use of locally sourced materials, saving on cement, steel, and other building materials, resulting in lower costs. They also have a simple structure, facilitating maintenance and heightening. Their dam body is a granular earth-rock structure, exhibiting strong adaptability to deformation, low requirements for the foundation, and simple and convenient construction.
[0003] However, existing dams have a significant weakness: they cannot withstand water flow. If water flows over the dam crest, it will affect the safety of the dam. To meet flood discharge requirements, specialized flood discharge facilities, such as spillways made of concrete, are often added to the project. However, due to the differences in properties between the dam's soil and rock materials and concrete, such designs often have many problems, such as deformation incompatibility, structural issues, stability problems, and construction problems. Utility Model Content
[0004] The purpose of this invention is to provide a water-passing earth-rock dam to solve the aforementioned problems existing in the prior art.
[0005] To achieve the above objectives, this utility model adopts the following technical solution:
[0006] A water-passing earth-rock dam structure includes a trapezoidal dam body built above the dam foundation and a seepage-proof curtain grouting body embedded in the dam foundation; the trapezoidal dam body includes an upstream dam shell material zone, a downstream dam shell material zone, an upstream slope protection on the surface of the upstream dam shell material zone, a downstream slope protection on the surface of the downstream dam shell material zone, an upstream transition material zone and a downstream transition material zone located between the upstream and downstream dam shell material zones, and a reinforcement functional zone located between the upstream and downstream transition material zones; the seepage-proof curtain grouting body is located below the reinforcement functional zone; several spillways are also provided along the dam crest and downstream slope protection direction of the trapezoidal dam body, each spillway including an intake section, a flow section, and a drainage section connected in sequence; the intake section of the spillway is located above the reinforcement functional zone and close to the dam crest of the trapezoidal dam body, and the flow section of the spillway is located outside the downstream slope protection.
[0007] Optionally, a curtain grouting steel pipe is pre-embedded in the functional area of the reinforcement body, the curtain grouting steel pipe is embedded in the dam foundation, and grouting is carried out through the curtain grouting steel pipe to form the seepage-proof curtain grouting body.
[0008] Optionally, the reinforcing body functional area is made of concrete or reinforced concrete.
[0009] Optionally, the water passage section of the spillway is set along the outer wall of the downstream slope, and the drainage section of the spillway is set close to the bottom of the trapezoidal dam.
[0010] Optionally, a number of support columns for supporting the water passage section are provided between the water passage section of the spillway and the downstream slope; the drainage section of the spillway is also located away from the bottom of the trapezoidal dam.
[0011] Optionally, a sluice gate may be installed above the trapezoidal dam.
[0012] Beneficial effects: The water-passing earth-rock dam structure of this utility model has a reinforcing functional area set in the center of the trapezoidal dam body and a seepage-proof curtain grouting body set below the reinforcing functional area;
[0013] 1. It can support the normal flow of the spillway on the dam crest, and at the same time enhance the functional area of the dam body to have the working performance of seepage prevention, stress resistance, deformation resistance and flood inundation without collapse. Compared with the existing technology of setting a clay core wall made of flexible material in the center of the dam body, it has superior performance.
[0014] 2. The spillway is built on the reinforced functional area. When the water passage section of the spillway is set far away from the outer wall of the downstream revetment, the stress and deformation of the two are independent and unrelated. When the water passage section of the spillway is set along the outer wall of the downstream revetment, the downstream dam body can be consolidated and stabilized in advance to reduce deformation by improving the construction compaction standard of the downstream dam body, so as to improve and adapt to the stress environment of the spillway. With the progress of the times, high-power vibratory compaction construction equipment has solved this problem.
[0015] 3. Constructing a spillway on the surface of the dam body instead of excavating a spillway on both sides of the mountains can save 1 / 3 to 1 / 4 of the total project investment, resulting in superior economic indicators;
[0016] This utility model's water-passing earth-rock dam structure solves the problems of deformation incoordination, structural issues, stability problems, and construction problems between the dam body's soil and rock materials and the spillway's concrete materials in the prior art by setting up a reinforced functional zone and a seepage-proof curtain grouting body. Attached Figure Description
[0017] Figure 1 This refers to the water-passing earth-rock dam structure in Example 1;
[0018] Figure 2 This refers to the water-passing earth-rock dam structure in Example 2;
[0019] Figure 3 This refers to the water-passing earth-rock dam structure in Example 3;
[0020] Figure 4 This refers to the water-passing earth-rock dam structure in Example 4.
[0021] In the diagram: 1. Dam foundation; 2. Trapezoidal dam body; 21. Upstream dam shell material area; 22. Downstream dam shell material area; 23. Upstream slope protection; 24. Downstream slope protection; 25. Upstream transition material area; 26. Downstream transition material area; 27. Reinforcement functional area; 3. Anti-seepage curtain grouting body; 4. Spillway; 41. Intake section; 42. Passage section; 43. Drainage section; 5. Support column; 6. Sluice gate. Detailed Implementation
[0022] Example 1
[0023] like Figure 1 As shown, this embodiment provides a water-passing earth-rock dam structure, including a trapezoidal dam body 2 built on top of a dam foundation 1 and a seepage-proof curtain grouting body 3 embedded in the dam foundation 1; the trapezoidal dam body 2 includes an upstream dam shell material area 21, a downstream dam shell material area 22, an upstream slope protection 23 located on the surface of the upstream dam shell material area 21, a downstream slope protection 24 located on the surface of the downstream dam shell material area 22, an upstream transition material area 25 and a downstream transition material area 26 located between the upstream dam shell material area 21 and the downstream dam shell material area 22, and an upstream transition material area 25 located in the upstream transition material area 25. The reinforcing functional zone 27 is located between the downstream transition material zone 26 and the reinforcement functional zone 27. The seepage-proof curtain grouting body 3 is located below the reinforcement functional zone 27. Several spillways 4 are also provided along the dam crest and downstream slope 24 of the trapezoidal dam body 2. The spillway 4 includes an inlet section 41, a flow section 42 and a drainage section 43 connected in sequence. The inlet section 41 of the spillway 4 is located above the reinforcement functional zone 27 and close to the dam crest of the trapezoidal dam body 2. The flow section 42 of the spillway 4 is located outside the downstream slope 24.
[0024] In this embodiment, both the upstream dam shell material zone 21 and the downstream dam shell material zone 22 are composed of soil and rock materials, which do not require complex artificial processing and are easy to obtain; the reinforcing body functional zone 27 is made of concrete or reinforced concrete.
[0025] A curtain grouting steel pipe is pre-embedded in the reinforcing functional area 27. The curtain grouting steel pipe is embedded in the dam foundation 1. Grouting is carried out through the curtain grouting steel pipe to form the seepage-proof curtain grouting body 3. The reinforcing functional area 27 and the seepage-proof curtain grouting body 3 form a rigid seepage-proof body. The spillway 4 is set above the rigid seepage-proof body. The rigid seepage-proof body can support the normal flow of the spillway 4 on the top of the dam and has the working performance of seepage prevention, stress bearing, load bearing, resistance to deformation and flood overflow without collapse.
[0026] Specifically, the inlet section of the spillway 4 is rigidly connected or overlapped with the reinforcement functional area 27, that is, the spillway 4 uses the reinforcement functional area 27 as its foundation; during construction, it is necessary to ensure the seepage prevention at the joints.
[0027] In this embodiment, the water passage section 42 of the spillway 4 is set along the outer wall of the downstream slope 24, and the drainage section 43 of the spillway 4 is set close to the bottom of the trapezoidal dam body 2. During construction, it is necessary to do a good job of the downstream dam body foundation treatment, so as to prevent excessive deformation, seepage and seepage deformation, and at the same time, to do a good job of drainage along the slope direction.
[0028] Example 2
[0029] like Figure 2 As shown, this embodiment provides a water-passing earth-rock dam structure, including a trapezoidal dam body 2 built on top of a dam foundation 1 and a seepage-proof curtain grouting body 3 embedded in the dam foundation 1; the trapezoidal dam body 2 includes an upstream dam shell material area 21, a downstream dam shell material area 22, an upstream slope protection 23 located on the surface of the upstream dam shell material area 21, a downstream slope protection 24 located on the surface of the downstream dam shell material area 22, an upstream transition material area 25 and a downstream transition material area 26 located between the upstream dam shell material area 21 and the downstream dam shell material area 22, and an upstream transition material area 25 located in the upstream transition material area 25. The reinforcing functional zone 27 is located between the downstream transition material zone 26 and the reinforcement functional zone 27. The seepage-proof curtain grouting body 3 is located below the reinforcement functional zone 27. Several spillways 4 are also provided along the dam crest and downstream slope 24 of the trapezoidal dam body 2. The spillway 4 includes an inlet section 41, a flow section 42 and a drainage section 43 connected in sequence. The inlet section 41 of the spillway 4 is located above the reinforcement functional zone 27 and close to the dam crest of the trapezoidal dam body 2. The flow section 42 of the spillway 4 is located outside the downstream slope 24.
[0030] In this embodiment, both the upstream dam shell material zone 21 and the downstream dam shell material zone 22 are composed of soil and rock materials, which do not require complex artificial processing and are easy to obtain; the reinforcing body functional zone 27 is made of concrete or reinforced concrete.
[0031] A curtain grouting steel pipe is pre-embedded in the reinforcing functional area 27. The curtain grouting steel pipe is embedded in the dam foundation 1. Grouting is carried out through the curtain grouting steel pipe to form the seepage-proof curtain grouting body 3. The reinforcing functional area 27 and the seepage-proof curtain grouting body 3 form a rigid seepage-proof body. The spillway 4 is set above the rigid seepage-proof body. The rigid seepage-proof body can support the normal flow of the spillway 4 on the top of the dam and has the working performance of seepage prevention, stress bearing, load bearing, resistance to deformation and flood overflow without collapse.
[0032] Specifically, the inlet section of the spillway 4 is rigidly connected or overlapped with the reinforcement functional area 27, that is, the spillway 4 uses the reinforcement functional area 27 as its foundation; during construction, it is necessary to ensure the seepage prevention at the joints.
[0033] In this embodiment, the water passage section 42 of the spillway 4 is set along the outer wall of the downstream slope 24, and the drainage section 43 of the spillway 4 is set close to the bottom of the trapezoidal dam body 2. During construction, it is necessary to do a good job of the downstream dam body foundation treatment, so as to prevent excessive deformation, seepage and seepage deformation, and at the same time, to do a good job of drainage along the slope direction.
[0034] In an optional embodiment, a sluice gate 6 is also provided above the trapezoidal dam body 2, and the opening and closing of the spillway 4 can be controlled by the sluice gate 6.
[0035] Example 3
[0036] like Figure 3 As shown, this embodiment provides a water-passing earth-rock dam structure, including a trapezoidal dam body 2 built on top of a dam foundation 1 and a seepage-proof curtain grouting body 3 embedded in the dam foundation 1; the trapezoidal dam body 2 includes an upstream dam shell material area 21, a downstream dam shell material area 22, an upstream slope protection 23 located on the surface of the upstream dam shell material area 21, a downstream slope protection 24 located on the surface of the downstream dam shell material area 22, an upstream transition material area 25 and a downstream transition material area 26 located between the upstream dam shell material area 21 and the downstream dam shell material area 22, and an upstream transition material area 25 located in the upstream transition material area 25. The reinforcing functional zone 27 is located between the downstream transition material zone 26 and the reinforcement functional zone 27. The seepage-proof curtain grouting body 3 is located below the reinforcement functional zone 27. Several spillways 4 are also provided along the dam crest and downstream slope 24 of the trapezoidal dam body 2. The spillway 4 includes an inlet section 41, a flow section 42 and a drainage section 43 connected in sequence. The inlet section 41 of the spillway 4 is located above the reinforcement functional zone 27 and close to the dam crest of the trapezoidal dam body 2. The flow section 42 of the spillway 4 is located outside the downstream slope 24.
[0037] In this embodiment, both the upstream dam shell material zone 21 and the downstream dam shell material zone 22 are composed of soil and rock materials, which do not require complex artificial processing and are easy to obtain; the reinforcing body functional zone 27 is made of concrete or reinforced concrete.
[0038] A curtain grouting steel pipe is pre-embedded in the reinforcing functional area 27. The curtain grouting steel pipe is embedded in the dam foundation 1. Grouting is carried out through the curtain grouting steel pipe to form the seepage-proof curtain grouting body 3. The reinforcing functional area 27 and the seepage-proof curtain grouting body 3 form a rigid seepage-proof body. The spillway 4 is set above the rigid seepage-proof body. The rigid seepage-proof body can support the normal flow of the spillway 4 on the top of the dam and has the working performance of seepage prevention, stress bearing, load bearing, resistance to deformation and flood overflow without collapse.
[0039] Specifically, the inlet section of the spillway 4 is rigidly connected or overlapped with the reinforcement functional area 27, that is, the spillway 4 uses the reinforcement functional area 27 as its foundation; during construction, it is necessary to ensure the seepage prevention at the joints.
[0040] In this embodiment, a number of support columns 5 are provided between the water passage section 42 of the spillway 4 and the downstream slope 24 to support the water passage section 42; the drainage section 43 of the spillway 4 is located away from the bottom of the trapezoidal dam body 2; during construction, structural calculations must be performed to reasonably arrange the support columns 5 to support the structural stability of the spillway 4 and meet the requirements of bearing capacity and deformation.
[0041] Example 4
[0042] like Figure 4 As shown, this embodiment provides a water-passing earth-rock dam structure, including a trapezoidal dam body 2 built on top of a dam foundation 1 and a seepage-proof curtain grouting body 3 embedded in the dam foundation 1; the trapezoidal dam body 2 includes an upstream dam shell material area 21, a downstream dam shell material area 22, an upstream slope protection 23 located on the surface of the upstream dam shell material area 21, a downstream slope protection 24 located on the surface of the downstream dam shell material area 22, an upstream transition material area 25 and a downstream transition material area 26 located between the upstream dam shell material area 21 and the downstream dam shell material area 22, and an upstream transition material area 25 located in the upstream transition material area 25. The reinforcing functional zone 27 is located between the downstream transition material zone 26 and the reinforcement functional zone 27. The seepage-proof curtain grouting body 3 is located below the reinforcement functional zone 27. Several spillways 4 are also provided along the dam crest and downstream slope 24 of the trapezoidal dam body 2. The spillway 4 includes an inlet section 41, a flow section 42 and a drainage section 43 connected in sequence. The inlet section 41 of the spillway 4 is located above the reinforcement functional zone 27 and close to the dam crest of the trapezoidal dam body 2. The flow section 42 of the spillway 4 is located outside the downstream slope 24.
[0043] In this embodiment, both the upstream dam shell material zone 21 and the downstream dam shell material zone 22 are composed of soil and rock materials, which do not require complex artificial processing and are easy to obtain; the reinforcing body functional zone 27 is made of concrete or reinforced concrete.
[0044] A curtain grouting steel pipe is pre-embedded in the reinforcing functional area 27. The curtain grouting steel pipe is embedded in the dam foundation 1. Grouting is carried out through the curtain grouting steel pipe to form the seepage-proof curtain grouting body 3. The reinforcing functional area 27 and the seepage-proof curtain grouting body 3 form a rigid seepage-proof body. The spillway 4 is set above the rigid seepage-proof body. The rigid seepage-proof body can support the normal flow of the spillway 4 on the top of the dam and has the working performance of seepage prevention, stress bearing, load bearing, resistance to deformation and flood overflow without collapse.
[0045] Specifically, the inlet section of the spillway 4 is rigidly connected or overlapped with the reinforcement functional area 27, that is, the spillway 4 uses the reinforcement functional area 27 as its foundation; during construction, it is necessary to ensure the seepage prevention at the joints.
[0046] In this embodiment, a number of support columns 5 for supporting the water passage section 42 are provided between the water passage section 42 of the spillway 4 and the downstream slope 24; the drainage section 43 of the spillway 4 is also located away from the bottom of the trapezoidal dam body 2; during construction, structural calculations must be performed to reasonably arrange the support columns 5 that support the structural stability of the spillway 4 and meet the requirements of bearing capacity and deformation.
[0047] In an optional embodiment, a sluice gate 6 is also provided above the trapezoidal dam body 2, and the opening and closing of the spillway 4 can be controlled by the sluice gate 6.
[0048] It should be noted that in the water-passing earth-rock dam structure of this utility model, the setting of the iron slope or the slope of the spillway section can be freely selected according to the construction conditions.
[0049] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.
Claims
1. A water-passing earth-rock dam, characterized in that, The dam includes a trapezoidal dam body (2) built on top of the dam foundation (1) and a seepage-proof curtain grouting body (3) embedded in the dam foundation (1); the trapezoidal dam body (2) includes an upstream dam shell material area (21), a downstream dam shell material area (22), an upstream slope protection (23) on the surface of the upstream dam shell material area (21), a downstream slope protection (24) on the surface of the downstream dam shell material area (22), an upstream transition material area (25) and a downstream transition material area (26) located between the upstream dam shell material area (21) and the downstream dam shell material area (22), and a transition material area between the upstream transition material area (25) and the downstream transition material area (26). The reinforcing functional area (27) is located between the two sides; the anti-seepage curtain grouting body (3) is located below the reinforcing functional area (27); several spillways (4) are also provided along the direction of the top of the trapezoidal dam body (2) and the downstream slope (24). The spillway (4) includes an intake section (41), a water passage section (42) and a drainage section (43) connected in sequence; the intake section (41) of the spillway (4) is located above the reinforcing functional area (27) and close to the top of the trapezoidal dam body (2), and the water passage section (42) of the spillway (4) is located outside the downstream slope (24).
2. The water-passing earth-rock dam according to claim 1, characterized in that, The curtain grouting steel pipe is pre-embedded in the functional area (27) of the reinforcement body. The curtain grouting steel pipe is embedded in the dam foundation (1). Grouting is carried out through the curtain grouting steel pipe to form the seepage-proof curtain grouting body (3).
3. The water-passing earth-rock dam according to claim 1, characterized in that, The reinforcing functional area (27) is made of concrete or reinforced concrete.
4. The water-passing earth-rock dam according to claim 1, characterized in that, The water passage section (42) of the spillway (4) is set along the outer wall of the downstream slope (24), and the drainage section (43) of the spillway (4) is set close to the bottom of the trapezoidal dam (2).
5. The water-passing earth-rock dam according to claim 1, characterized in that, Several support columns (5) for supporting the water passage section (42) are provided between the water passage section (42) and the downstream slope protection (24) of the spillway (4); the drainage section (43) of the spillway (4) is located away from the bottom of the trapezoidal dam.
6. The water-passing earth-rock dam according to claim 1, characterized in that, A sluice gate (6) is also installed above the trapezoidal dam body (2).