CN213709417U - Dam body drainage structure of water conservancy homogeneity earth dam - Google Patents
Dam body drainage structure of water conservancy homogeneity earth dam Download PDFInfo
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- CN213709417U CN213709417U CN202022679984.4U CN202022679984U CN213709417U CN 213709417 U CN213709417 U CN 213709417U CN 202022679984 U CN202022679984 U CN 202022679984U CN 213709417 U CN213709417 U CN 213709417U
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Abstract
The application relates to a dam body drainage structure of a water conservancy homogeneous earth dam, which comprises a primary drainage pipe and a primary water collection pipe, wherein the primary drainage pipe is arranged in the dam, is vertically arranged and is close to the inner side of the upstream surface of the dam, and is provided with a plurality of drainage holes; the collector pipe level sets up, the collector pipe with interval between the dam bottom surface is greater than the liquid level height of dam dorsal surface, collector pipe one end communicate in the one-level drain pipe is close to the one end of dam bottom surface, the collector pipe is kept away from the one end of one-level drain pipe extends the dorsal surface of dam. This application has the effect that improves dam body protective strength.
Description
Technical Field
The utility model belongs to the technical field of hydraulic engineering technique and specifically relates to a dam body drainage structures of water conservancy homogeneity earth dam.
Background
Homogeneous earth dams are ancient hydraulic structures with a section that is not divided into a body and a shell, and are basically constructed from relatively uniform single materials with a low permeability coefficient. The whole dam body is an anti-seepage body, the contact seepage diameter of the structure of the anti-seepage body with a dam foundation, a bank slope and a concrete building is longer, and anti-seepage treatment can be simplified or even cancelled. The method has the characteristics of single filling material, simple working procedures, less interference among the working procedures, low requirement on geological conditions, low manufacturing cost and the like, and is often the preferred scheme of engineering design when the conditions are met.
The present invention, chinese published under the number CN103711104B, discloses a homogeneous earth dam revetment comprising earth bags and concrete slabs; wherein, the geotextile bag is laid on the upstream surface of the homogeneous earth dam, and a concrete slab is laid on the outer side of the geotextile bag.
With respect to the related art in the above, the inventors consider that: according to the scheme, the earth bags and the concrete slabs are laid on the side faces of the dam body to perform anti-seepage treatment, water still permeates into the dam body in daily and monthly use, water in the dam body freezes to frost heaving in a cold environment, water seepage in the dam body is difficult to avoid, and the frost heaving volume of the dam body is reduced by reducing a dam body infiltration line in the anti-frost heaving treatment of the homogeneous earth dam, so that the protective strength of the dam body can be improved.
SUMMERY OF THE UTILITY MODEL
In order to improve dam body protective strength, this application provides a dam body drainage structures of water conservancy homogeneity earth dam.
The application provides a dam body drainage structure of water conservancy homogeneity earth dam adopts following technical scheme:
a dam body drainage structure of a water conservancy homogeneous earth dam comprises a primary drainage pipe and a collector pipe which are arranged in the dam, wherein the primary drainage pipe is vertically arranged and is close to the inner side of the upstream face of the dam, and a plurality of drainage holes are formed in the primary drainage pipe; the collector pipe level sets up, the collector pipe with interval between the dam bottom surface is greater than the liquid level height of dam dorsal surface, collector pipe one end communicate in the one-level drain pipe is close to the one end of dam bottom surface, the collector pipe is kept away from the one end of one-level drain pipe extends the dorsal surface of dam.
Through adopting above-mentioned technical scheme, when there is water infiltration one side of the upstream face of dam, water is to infiltration in the homogeneous soil dam, when arriving near one-level drain pipe, one-level drain pipe is with water absorption on every side to the one-level drain pipe, it is intraductal to flow in the one-level drain pipe through the wash port of one-level drain pipe, the water of one-level drain pipe is at the flow to the collector pipe, the water of collector pipe is to the low reaches, utilize the one-level drain pipe to carry out the partial absorption to permeating dam internal water, thereby can reduce the infiltration line of dam, and then can reduce the frost heaving volume of dam, be favorable to improving the proof strength of dam.
Optionally, the first-stage drain pipe is a plurality of, and evenly distributed along dam length direction.
By adopting the technical scheme, because the one-level drain pipe is a plurality of, and along dam length direction evenly distributed for the infiltration water in the dam and one-level drain pipe area of contact increase, thereby can improve the absorbed quantity of infiltration water, be favorable to further reducing the infiltration line of dam.
Optionally, the water collecting pipe is communicated with a second-stage drain pipe, the second-stage drain pipe is vertically arranged and is located on the same side of the water collecting pipe as the first-stage drain pipe, and the second-stage drain pipe is provided with a drain hole.
By adopting the technical scheme, the upper communication of the water collecting pipe is provided with the secondary drainage pipe, and the seepage water which is not absorbed by the primary drainage pipe is absorbed again by the secondary drainage pipe, so that the infiltration line in the dam can be further reduced, and the dam can be protected.
Optionally, a gravel body is stacked at a dam toe of the back surface of the dam, the height of the gravel body is greater than the highest water level of the downstream of the dam, and one end of the water collecting pipe, which is far away from the primary water discharging pipe, abuts against the gravel body.
By adopting the technical scheme, the broken stone bodies are piled up at the dam feet on the back surface of the dam, and can support the downstream dam slope, so that the stability of the dam slope can be improved, and the broken stone bodies can protect the dam feet from being washed away by tail water.
Optionally, a first inverted filter layer is laid on one side, close to the dam, of the gravel body, and one end, far away from the primary water discharge pipe, of the water collection pipe is abutted to the first inverted filter layer.
Through adopting above-mentioned technical scheme, when the rivers of collector pipe flow, owing to lay first inverted filter in the side that is close to dam one side for the water that flows is when the inverted filter, can stay earth in one side that first inverted filter is close to the dam, thereby can hinder earth loss.
Optionally, a buffer layer is laid on the upstream face of the dam, and the height of the buffer layer is greater than the highest liquid level of the upstream of the dam.
By adopting the technical scheme, the buffer layer is paved on the upstream face of the dam, so that the dam can be protected from being impacted by water flow, the stability of the upstream dam slope can be improved, and the stability of the dam can be improved.
Optionally, a second inverse filter layer is arranged between the upstream face of the dam and the buffer layer, the side face, close to the buffer layer, of the second inverse filter layer abuts against the buffer layer, and the side face, close to the upstream face of the dam, of the second inverse filter layer abuts against the dam.
Through adopting above-mentioned technical scheme, owing to lay the second anti-filter layer between buffer layer and dam upstream face, utilize the second anti-filter layer can hinder dam upstream face earth from being washed away and run off by the rivers to can protect the bulk strength of dam.
Optionally, concrete layers are laid on the top and the back surface of the dam.
By adopting the technical scheme, in rainy days, because the concrete layers are paved on the dam crest and the back water surface of the dam, rainwater flows into the river channels at the two sides of the dam along the concrete layers, the rainwater is prevented from permeating into the dam through the dam crest, and the possibility that the dam is subjected to frost heaving can be reduced.
In summary, the present application includes at least one of the following beneficial technical effects:
when water permeates from one side of the upstream face of the dam, the water permeates into the homogeneous soil dam and reaches the position close to the primary drain pipe, the primary drain pipe sucks the surrounding water to the primary drain pipe, the water flows into the primary drain pipe through a drain hole of the primary drain pipe, the water of the primary drain pipe flows to the water collecting pipe, the water of the water collecting pipe flows to the downstream, and the primary drain pipe can be used for partially absorbing the water permeating into the dam, so that the infiltration line of the dam can be reduced, the frost heaving volume of the dam can be reduced, and the protection strength of the dam can be improved;
because the primary drain pipes are uniformly distributed along the length direction of the dam, the contact area between the seepage water in the dam and the primary drain pipes is increased, so that the absorption capacity of the seepage water can be improved, and the infiltration line of the dam can be further reduced;
the secondary drainage pipe is communicated with the upper part of the water collecting pipe, so that the seepage water which is not absorbed by the primary drainage pipe is absorbed again by the secondary drainage pipe, and the seepage line in the dam can be further reduced, thereby being beneficial to protecting the dam.
Drawings
Fig. 1 is a schematic cross-sectional structural view of a dam drainage structure according to an embodiment of the present application.
Fig. 2 is another sectional structural diagram of a dam drainage structure according to an embodiment of the present disclosure.
Description of reference numerals: 1. a dam; 2. a first-stage drain pipe; 201. a drain hole; 3. a water collection pipe; 4. a secondary water drainage pipe; 5. breaking the stone body; 6. a first inverted filter layer; 7. a buffer layer; 8. a second inverted filter layer; 9. and a concrete layer.
Detailed Description
The present application is described in further detail below with reference to figures 1-2.
The embodiment of the application discloses dam body drainage structure of water conservancy homogeneity earth dam. Referring to fig. 1, the drainage structure comprises a water collecting pipe 3 and a primary drainage pipe 2 which are installed in a dam 1, wherein the water collecting pipe 3 is horizontally arranged, the length direction of the water collecting pipe 3 is vertical to the length direction of the dam 1, the height of the water collecting pipe 3 is greater than the liquid level height of the back water surface of the dam 1, one end of the water collecting pipe 3 extends out of the back water surface of the dam 1, and the other end of the water collecting pipe 3 is close to the upstream surface of the dam 1; one-level drain pipe 2 is the porous concrete pipe in the concrete implementation, the vertical setting of one-level drain pipe 2, interval between one-level drain pipe 2's the top and the 1 bottom surface of dam is less than the liquid level height of 1 upstream face of dam, one-level drain pipe 2 is close to the inboard of 1 upstream face of dam, a plurality of wash ports 201 have been seted up on one-level drain pipe 2, wash port 201 is seted up around one week of one-level drain pipe 2, and along one-level drain pipe 2's length direction evenly distributed, one end that one-level drain pipe 2 is close to 1 bottom surface of dam communicates in the one end that collector pipe 3 is close to 1 upstream face.
When one side of the upstream face of the dam 1 has water seepage, the water seeps into the homogeneous soil dam, and when the water reaches the position near the first-level drain pipe 2, the first-level drain pipe 2 sucks the surrounding water to the first-level drain pipe 2, the water flows into the first-level drain pipe 2 through the drain hole 201 of the first-level drain pipe 2, the water of the first-level drain pipe 2 flows to the water collecting pipe 3, the water flow of the water collecting pipe 3 flows downstream, the water seeped into the dam 1 can be partially absorbed by the first-level drain pipe 2, so that the infiltration line of the dam 1 can be reduced, the frost heaving volume of the dam 1 can be reduced, and the protection strength of the dam 1.
Referring to fig. 2, a plurality of water collecting pipes 3 and primary water discharging pipes 2 form a water discharging structure and are uniformly distributed along the length direction of the dam 1; every collector pipe 3 intercommunication has second grade drain pipe 4, and second grade drain pipe 4 is the porous concrete pipe, and the vertical setting of second grade drain pipe 4 just lies in with one-level drain pipe 2 with one-level drain pipe 3 one side, second grade drain pipe 4 lies in between one-level drain pipe 2 and the dam 1 surface of a water back, and the length of second grade drain pipe 4 is less than the length of one-level drain pipe 2, has seted up wash port 201 on the second grade drain pipe 4.
Because the collector pipe 3 and one-level drain pipe 2 constitute drainage structures and be a plurality ofly, and along 1 length direction evenly distributed of dam for the infiltration water in the dam 1 and the increase of one-level drain pipe 2 area of contact, thereby can improve the absorbed quantity of infiltration water, be favorable to further reducing the infiltration line of dam 1. In addition, as the water collecting pipe 3 is communicated with the secondary drain pipe 4, the seepage water which is not absorbed by the primary drain pipe 2 is absorbed again by the secondary drain pipe 4, so that the infiltration line in the dam 1 can be further reduced, and the dam 1 is protected.
Referring to fig. 1, a broken stone body 5 is piled up at the dam foot of the back surface of the dam 1, the section of the broken stone body 5 is trapezoidal, the broken stone body 5 is arranged along the length direction of the dam 1, the height of the broken stone body 5 is greater than the highest water level of the downstream of the dam 1, and the broken stone body 5 can be used for supporting the downstream dam slope, so that the stability of the dam slope can be improved, and the broken stone body 5 can also protect the dam foot from being washed by tail water; one side that the rubble body 5 is close to the 1 surface of a back side of dam has been laid first anti-filter 6, the side butt of rubble layer one side is kept away from to first anti-filter 6 in the surface of a back side of dam 1, the one end butt of one-level drain pipe 2 is kept away from to collector pipe 3 in first anti-filter 6, first anti-filter 6 is sand in concrete implementation, rubble or cobble are piled up in proper order and are formed, utilize first anti-filter 6, make the water that flows when first anti-filter 6, can stay first anti-filter 6 one side that is close to dam 1 with earth, thereby can hinder earth loss.
Referring to fig. 1, a buffer layer 7 is laid on the upstream surface of the dam 1, the height of the buffer layer 7 is greater than the liquid level height of the upstream surface of the dam 1, the width of the top end of the buffer layer 7 is smaller than the width of the bottom end, the dam 1 can be protected from being impacted by water flow, the stability of an upstream dam slope can be improved, and therefore the stability of the dam 1 can be improved; a second inverted filter layer 8 is arranged between the upstream face of the dam 1 and the buffer layer 7, the height of the second inverted filter layer 8 is consistent with that of the buffer layer 7, the side face, far away from the upstream face of the dam 1, of the second inverted filter layer 8 abuts against the buffer layer 7, the side face, far away from the buffer layer 7, of the second inverted filter layer 8 abuts against the upstream face of the dam 1, in specific implementation, the second inverted filter layer 8 is formed by sequentially piling up sand, gravel or pebbles, and the second inverted filter layer 8 can be used for preventing soil on the upstream face of the dam 1 from being washed away by water flow and lost, so that the overall strength of the dam 1 can be protected; concrete layers 9 are laid on the top and the back of the dam 1, so that rainwater flows into river channels on two sides of the dam 1 along the concrete layers 9, the rainwater is prevented from permeating into the dam 1 through the top of the dam, and the possibility that the dam 1 is frost heaving can be reduced.
The implementation principle of the dam body drainage structure of the water conservancy homogeneous earth dam of the embodiment of the application is as follows: when water permeates from one side of the upstream face of the dam 1, the water permeates into the homogeneous dam and reaches the position near the primary drain pipe 2, because a plurality of primary drain pipes 2 are arranged, the contact area between the permeated water in the dam 1 and the primary drain pipe 2 is increased, most of the permeated water is absorbed by the primary drain pipe 2 to the primary drain pipe 2 and flows into the primary drain pipe 2 through the drain hole 201 of the primary drain pipe 2, the water in the primary drain pipe 2 flows to the water collecting pipe 3, the permeated water which is not absorbed by the primary drain pipe 2 is absorbed again by the secondary drain pipe 4 when permeating to the back face of the dam 1, the water in the secondary drain pipe 4 flows to the water collecting pipe 3, the water in the water collecting pipe 3 flows downstream, and most of the permeated water permeating into the dam 1 can be absorbed by utilizing the mutual cooperation of the primary drain pipe 2 and the secondary drain pipe 4, so that the infiltration line of the dam 1 can be reduced, and then can reduce the frost heaving volume of dam 1, be favorable to improving dam 1's protection intensity.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a dam body drainage structures of water conservancy homogeneity earth dam which characterized in that: the water collecting and draining device comprises a primary water draining pipe (2) and a water collecting pipe (3) which are arranged in a dam (1), wherein the primary water draining pipe (2) is vertically arranged and is close to the inner side of the upstream surface of the dam (1), and a plurality of water draining holes (201) are formed in the primary water draining pipe (2); collector pipe (3) level sets up, collector pipe (3) with interval between dam (1) bottom surface is greater than the liquid level height of dam (1) dorsal surface, collector pipe (3) one end communicate in one-level drain pipe (2) are close to the one end of dam (1) bottom surface, collector pipe (3) are kept away from the one end of one-level drain pipe (2) is extended the dorsal surface of dam (1).
2. The dam body drainage structure of a water conservancy homogeneous earth dam of claim 1, characterized in that: the primary water discharge pipes (2) are multiple and are evenly distributed along the length direction of the dam (1).
3. The dam body drainage structure of a water conservancy homogeneous earth dam of claim 1, characterized in that: the water collecting pipe (3) is communicated with a secondary water draining pipe (4), the secondary water draining pipe (4) is vertically arranged and is located on the same side of the water collecting pipe (3) with the primary water draining pipe (2), and a water draining hole (201) is formed in the secondary water draining pipe (4).
4. The dam body drainage structure of a water conservancy homogeneous earth dam of claim 1, characterized in that: the dam foot of dam (1) surface of a backwater has the rubble body (5) of piling up, the height of rubble body (5) is greater than dam (1) low reaches maximum water level, collector pipe (3) are kept away from the one end butt of one-level drain pipe (2) in rubble body (5).
5. The dam body drainage structure of a water conservancy homogeneous earth dam of claim 4, characterized in that: the gravel body (5) is close to one side of dam (1) has been laid first anti-filtration layer (6), collector pipe (3) are kept away from the one end butt of one-level drain pipe (2) in first anti-filtration layer (6).
6. The dam body drainage structure of a water conservancy homogeneous earth dam of claim 1, characterized in that: a buffer layer (7) is laid on the upstream face of the dam (1), and the height of the buffer layer (7) is larger than the upstream maximum liquid level of the dam (1).
7. The dam body drainage structure of a water conservancy homogeneous earth dam of claim 6, characterized in that: dam (1) upstream face with be provided with second reversed filter (8) between buffer layer (7), second reversed filter (8) are close to the side butt of buffer layer (7) one side in buffer layer (7), second reversed filter (8) are close to the side butt of dam (1) upstream face one side in dam (1).
8. The dam body drainage structure of a water conservancy homogeneous earth dam of claim 1, characterized in that: concrete layers (9) are laid on the top and the back surface of the dam (1).
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| CN202022679984.4U CN213709417U (en) | 2020-11-18 | 2020-11-18 | Dam body drainage structure of water conservancy homogeneity earth dam |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114134880A (en) * | 2021-09-13 | 2022-03-04 | 中电建路桥集团有限公司 | Homogeneous dam drainage structure and construction method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114134880A (en) * | 2021-09-13 | 2022-03-04 | 中电建路桥集团有限公司 | Homogeneous dam drainage structure and construction method thereof |
| CN114134880B (en) * | 2021-09-13 | 2023-03-21 | 中电建路桥集团有限公司 | Homogeneous dam drainage structure and construction method thereof |
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