CN216999852U - Dam inner gallery suitable for uneven settlement - Google Patents
Dam inner gallery suitable for uneven settlement Download PDFInfo
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- CN216999852U CN216999852U CN202220381140.8U CN202220381140U CN216999852U CN 216999852 U CN216999852 U CN 216999852U CN 202220381140 U CN202220381140 U CN 202220381140U CN 216999852 U CN216999852 U CN 216999852U
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Abstract
The utility model relates to the technical field of water conservancy and hydropower dam engineering, in particular to an intra-dam gallery suitable for uneven settlement, which comprises a first gallery, a second gallery and a connecting piece, wherein the connecting piece is connected between the first gallery and the second gallery, the connecting piece is of an integrated structure consisting of a small-caliber section, a gradual change section and a large-caliber section, the small-caliber section is connected with the connecting end of the first gallery, the large-caliber section is connected with the connecting end of the second gallery, the structure of the connecting end of the first gallery is the same as that of the connecting piece, the connecting end of the second gallery is a 'I' -shaped gallery with the same caliber, and the inner diameter of the small-caliber section at the connecting end of the first gallery is the same as that of the small-caliber section of the connecting piece and the inner diameter of the second gallery; this corridor in dam satisfies corridor construction in earth-rock dam and is based on the great inhomogeneous deflection that probably exists between overburden basis and the shoreside bedrock corridor, possesses the advantage of avoiding causing the concrete extrusion of dam corridor expansion joint department to destroy and seam stagnant water damage inefficacy in the dam because of dam foundation inhomogeneous settlement.
Description
Technical Field
The utility model relates to the technical field of water conservancy and hydropower dam engineering, in particular to an intra-dam gallery suitable for uneven settlement.
Background
Earth-rock dams are built by mainly adopting local materials in water conservancy and hydropower dam engineering, are relatively economic compared with other dam types, and are favored in the dam engineering field. The earth and rockfill dam mainly comprises a homogeneous dam, an earth impervious body partition dam and a non-earth impervious body partition dam. The earth-rock dam is divided into an earth-rock dam built on bedrock and an earth-rock dam built on a covering layer according to foundation building conditions.
For a partitioned earth-rock dam, particularly a medium-high core earth-rock dam, a concrete gallery is generally arranged in the dam and extends to a certain depth towards both banks for drainage, traffic and/or monitoring. Earth-rock dams built on overburden, as compared to earth-rock dams built on bedrock, suffer from overburden engineering characteristics and are much more complex to build than dams on bedrock. For the earth-rock dam built on the covering layer, the galleries in the dam are located on the soft foundation, and the galleries on the two banks are located in the rock mass, so that the problem of uneven settlement of the foundation inevitably exists.
The conventional mode for solving the problem of uneven settlement is to arrange an expansion joint and arrange water stop in the joint, wherein the water stop is generally strip-shaped rubber water stop or D-shaped copper water stop, and under the action of dam filling load and water pressure, a covering layer can generate larger settlement and uneven settlement, the three-dimensional displacement of the expansion joint of the corridor is larger, and the concrete can be extruded and damaged; the water stopping tension, subsidence and shear deformation in the seam are large, and the risk of water stopping damage and failure exists.
SUMMERY OF THE UTILITY MODEL
The utility model overcomes the defects of the prior art, provides the dam inner gallery suitable for uneven settlement, and particularly solves the problem caused by uneven settlement due to different foundations of the dam inner gallery of the earth-rock dam built on the covering layer.
The technical problem solved by the utility model can be realized by adopting the following technical scheme:
the utility model provides a corridor in dam suitable for differential settlement, includes first corridor, second corridor and connecting piece, the connecting piece is connected between first corridor and second corridor, the integral type structure that the connecting piece comprises small-bore section, gradual change section and heavy-calibre section, the small-bore section is connected with the link of first corridor, the heavy-calibre section is connected with the link of second corridor, the structure of the link of first corridor is the same with the structure of connecting piece, the link of second corridor is "one" word corridor with the bore, the internal diameter of the small-bore section of first corridor link, the internal diameter of the small-bore section of connecting piece and the internal diameter of second corridor are the same.
Further, the small-bore section of connecting piece connect inside the heavy-calibre section of first corridor link, the heavy-calibre section of connecting piece cup joints the outside at the link of second corridor.
Furthermore, the connecting pieces are provided with a plurality of connecting pieces, and the connecting pieces are connected in sequence in a manner that the large-caliber section of one connecting piece is sleeved with the small-caliber section of an adjacent connecting piece.
Further, all be provided with the stagnant water portion that is used for sealed stagnant water and fill in the gap of the junction between first corridor, second corridor and a plurality of connecting pieces and have a joint filling material, stagnant water portion is the water stopping rod or sealing rod, water stopping rod or sealing rod all adopt and meet water inflation rubber materials and make, the diameter of water stopping rod or sealing rod is 10cm ~ 20cm, water stopping rod or sealing rod sets up in the position apart from heavy-calibre section port department more than or equal to 20 cm.
Furthermore, leveling parts are arranged between the end part of the connecting end of the second gallery and the gradual change section of the connecting piece, between the small-caliber section of the connecting piece and the gradual change section of the adjacent connecting piece, and between the small-caliber section of the connecting piece and the gradual change section of the first gallery, and the leveling parts are concrete, mortar or rubber blocks.
Further, the joint filling material is a two-felt three-oil, low-foaming plastic plate, a rubber plate or an asphalt-impregnated wood plate.
Further, the length ratio between the small-caliber section and the large-caliber section on the connecting piece is 1:1, the length range is 0.5 m-2 m, and the gradient of the gradual change section is 1: m1, wherein m1 is a slope ratio coefficient, and the value range of m1 is 0.5-1.5.
Furthermore, the first gallery, the second gallery and the connecting piece are all of reinforced concrete structures, the section of each gallery is of a city gate hole type or a horseshoe shape, the internal dimension of the section is 2.0-3.0 m in width and 2.5-3.5 m in height, and the thickness of the reinforced concrete is 30-100 cm.
Furthermore, the overall length of the connecting piece is 1.5-6 m.
The beneficial effects of the utility model are:
compared with the prior art, the dam inner gallery suitable for uneven settlement has the following advantages:
1. because the width of the seam is arranged among the corridor components of each subsection of the first corridor, the second corridor and the plurality of connecting pieces, the seam is filled with the gap filling material with certain thickness, and the single or a plurality of corridor connecting pieces are combined to adapt to different shifts, so that the problem of extrusion damage of the concrete of the conventional expansion joint is avoided, and the harm caused by uneven settlement of the corridors in the dam is effectively solved.
2. Because the water-swelling rubber water stop rod (strip) arranged among the gallery members of the first gallery, the second gallery and the subsections of the connectors has good stress condition, the conventional expansion joint has large deformation due to tensioning, and the water-swelling rubber water stop rod (strip) is difficult to be arranged in the joint, thereby effectively solving the problems of large water stop tensioning, sinking and shearing deformation in the joint of the conventional expansion joint and the risk of water stop damage failure.
3. Because the gallery connecting piece which can be prefabricated and cast in situ is used, the construction arrangement of the gallery in the dam is more flexible.
Drawings
The utility model is further illustrated with reference to the following figures and examples.
Fig. 1 is an overall sectional structure diagram of the present invention.
In the figure: 1-a first gallery, 2-a second gallery, 3-a connecting piece, 3-1-a small-caliber section, 3-2-a gradual change section, 3-3-a large-caliber section, 4-a water stopping part, 5-a gap filling material and 6-a leveling part.
Detailed Description
The technical solution of the present invention for applying to an in-dam gallery with uneven settlement will be described in detail by several specific embodiments.
It should be noted that in the technical solution of the present invention, the first gallery 1 is a gallery built inside the dam body of an earth-rock dam on a soft foundation such as a covering layer or a dam material, and the second gallery 2 is a gallery in a rock body of two banks or a gallery on a hard foundation, i.e. the gallery inside the dam can be regarded as extending from the gallery inside the dam to one bank, so that the connecting member 3 is used for connecting two ends of the first gallery 1 on the soft foundation with the second gallery 2 on the hard foundation, thereby realizing penetration of the gallery in the dam with uneven settlement, and preventing the gallery from causing poor fracture and sealing.
Referring to fig. 1, an in-dam gallery suitable for uneven settlement comprises a first gallery 1, a second gallery 2 and a connecting member 3, wherein the connecting member 3 is connected between the first gallery 1 and the second gallery 2, wherein the connecting member 3 can be provided with one or more connecting members, which can be determined according to actual construction conditions, the size of the connecting member 3 is matched with that of the first gallery 1 and the second gallery 2, the connecting member 3 is an integrated structure consisting of a small-caliber section 3-1, a gradual change section 3-2 and a large-caliber section 3-3, wherein the small-caliber section 3-1 and the large-caliber section 3-3 are horizontal connecting sections, the gradual change section 3-2 is an inclined connecting section for connecting the small-caliber section 3-1 and the large-caliber section 3-3, the small-caliber section 3-1 is connected with the connecting end of the first gallery 1, and the large-caliber section 3-3 is connected with the connecting end of the second gallery 2, the structure of the link of first corridor 1 is the same with the structure of connecting piece 3, and the link of first corridor 1 of being convenient for is connected with the small-bore section 3-1 of connecting piece 3, the link of second corridor 2 is "one" word corridor with the bore, and second corridor 2 of this structure is convenient for be connected with the large-bore section 3-3 of connecting piece 3, the internal diameter of the small-bore section of the link of first corridor 1, the internal diameter of the small-bore section 3-1 of connecting piece 3 and the internal diameter of second corridor 2 are the same to guarantee that the inside aperture of corridor is the same in the dam of whole inhomogeneous settlement.
Further, referring to fig. 1, since the structure of the connection end of the first gallery 1 is the same as that of the connection member 3, the connection end of the first gallery 1 also includes a small-caliber section, a gradual change section and a large-caliber section, wherein the small-caliber section and the large-caliber section of the connection end of the first gallery 1 are both horizontal connection sections, the gradual change section is an inclined connection section for connecting the small-caliber section and the large-caliber section of the connection end of the first gallery 1, the length of the small-caliber section of the connection end of the first gallery 1 is greater than that of the large-caliber section, the small-caliber section 3-1 of the connection member 3 is connected inside the large-caliber section of the connection end of the first gallery 1, that is, the large-caliber section of the connection end of the first gallery 1 is sleeved on the small-caliber section 3-1 of the connection member 3, the large-caliber section 3 of the connection member 3 is sleeved outside the connection end of the second gallery 2, thereby make between first corridor 1, connecting piece 3 and the second corridor 2 the shape have certain flexibility as a plurality of condyles link to each other, can adapt to the different shifts of ground to do not influence the normal use of whole corridor, avoided conventional muddy earth corridor expansion joint concrete extrusion destruction problem, solve the harm that the corridor differential settlement brought in the dam effectively.
Further, referring to fig. 1, a plurality of connecting pieces 3 are provided, the connecting pieces 3 are connected in sequence in such a way that the large-diameter section 3-3 of one connecting piece 3 is sleeved with the small-diameter section 3-1 of an adjacent connecting piece 3, then the small-diameter sections 3-1 at the two ends are connected with the first gallery 1, and the large-diameter sections 3-3 at the two ends are connected with the second gallery 2; the length ratio of the small-caliber section 3-1 to the large-caliber section 3-3 on the connecting piece 3 is 1:1, namely the length of the small-caliber section 3-1 is equal to that of the large-caliber section 3-3, the length of the small-caliber section 3-1 on the connecting piece 3 cannot be greater than that of the large-caliber section of the connecting end of the first gallery 1, and the length of the small-caliber section 3-1 on the connecting piece 3 is the same as that of the large-caliber section of the connecting end of the first gallery 1, so that grooves are reduced in the gallery to ensure flatness;
the length range between the small-caliber section 3-1 and the large-caliber section 3-3 on the connecting piece 3 is 0.5 m-2 m, the actual used length can be determined according to specific construction conditions, and the length can be a prefabricated integrated structure or a cast-in-place integrated structure, and in the reference of fig. 1, the gradient of the gradual change section 3-2 is 1: m1, wherein m1 is a slope ratio coefficient, the value range of m1 is 0.5-1.5, and the value of m1 can be determined according to actual construction requirements.
Referring to fig. 1, the gaps at the joints between the first gallery 1, the second gallery 2 and the plurality of connecting pieces 3 are all provided with a water stopping part 4 for sealing and stopping water and filled with joint filling materials 5, wherein the joint filling materials 5 are used for filling the gaps around and outside the water stopping part 4, so as to ensure that the gaps at the joints between the first gallery 1, the second gallery 2 and the plurality of connecting pieces 3 are all provided with sealing performance, the water stopping part 4 is a water stopping rod or a water stopping strip, the water stopping rod or the water stopping strip is made of water swelling rubber materials, the water swelling rubber materials have certain flexibility and sealing performance, even if the external foundations of the first gallery 1, the second gallery 2 and the plurality of connecting pieces 3 are displaced, the joints between the first gallery 1, the second gallery 2 and the plurality of connecting pieces 3 cannot leak, and the diameter of the water stopping rod or the water stopping strip is 10 cm-20 cm, the diameter can be properly used in the range according to actual needs, the water stopping rod or the water stopping strip is arranged at a position which is more than or equal to 20cm away from the port 3-3 of the large-caliber section, the position avoids the water stopping rod or the water stopping strip from being exposed after deformation, and meanwhile, the internal sealing performance is ensured; the joint filling material 5 is a two-felt three-oil joint filling material, a low-foaming plastic plate, a rubber plate or an asphalt-impregnated wood plate, and the joint filling requirements can be met by randomly selecting one of the two-felt three-oil joint filling material and the low-foaming plastic plate, the rubber plate or the asphalt-impregnated wood plate.
Furthermore, leveling parts 6 are respectively arranged between the end part of the connecting end of the second gallery 2 and the gradual change section 3-2 of the connecting piece 3, between the small-caliber section 3-1 of the connecting piece 3 and the gradual change section 3-2 of the adjacent connecting piece 3 and between the small-caliber section 3-1 of the connecting piece 3 and the gradual change section of the first gallery 1, the leveling parts 6 are adopted to level the notch groove between the inclined gradual change section 3-2 and the small-caliber section 3-1, so as to ensure the leveling in the whole gallery, usually, only the notch groove at the bottom of the gallery needs to be filled, the leveling parts 6 are concrete, mortar or rubber blocks, and one of the concrete, the filling level of the notch groove in the gallery can be realized, preferably, so that the requirement of smooth traffic at the bottom of the gallery is met.
Furthermore, the first gallery 1, the second gallery 2 and the connecting piece 3 are all of reinforced concrete structures, the section of each of the first gallery, the second gallery and the connecting piece is of a city gate hole type or a horseshoe shape, the internal dimension of the section is 2.0-3.0 m in width and 2.5-3.5 m in height, and the thickness of the reinforced concrete is 30-100 cm; the specific size of the gallery can be selected within the numerical range of the utility model according to the actual construction requirement, the overall length of the connecting piece 3 is 1.5 m-6 m, in order to meet the size of the first gallery 1 and the second gallery 2, the overall length of the connecting piece 3 can be selected with the size of the first gallery 1 and the second gallery 2, the numerical range is selected as the range provided by the utility model, and the numerical ranges provided by the utility model all meet the actual construction requirement.
The construction process of the utility model is as follows: two connecting pieces 3 are selected according to actual construction;
1) prefabricating 2 connecting pieces 3 for later use;
2) pouring the second gallery 2, and waiting for 3 to 10 days after the pouring is finished;
3) placing a caulking material 5 and a water stop part 4 at the connecting section of the second gallery 2;
4) installing one gallery connecting piece 3, placing a water stopping part 4 and filling joint filling materials 5 on the small-caliber connecting section 3-1 of the gallery connecting piece, then installing the next gallery connecting piece 3, and placing the joint filling materials 5 and the water stopping part 4 on the small-caliber connecting section of the gallery connecting piece;
5) and finally pouring the first gallery 1.
And finishing the gallery in the whole uneven settlement dam according to the steps.
The dam inner gallery suitable for uneven settlement of the structure meets the requirement that the dam inner gallery of the earth-rock dam is built based on large uneven deformation possibly existing between a covering layer foundation and a shoreside bedrock inner gallery, and has the advantages of avoiding concrete extrusion damage at the expansion joint of the dam inner gallery and failure of water stop damage in the joint caused by uneven settlement of the dam foundation.
While the embodiments of the present invention have been described in detail with reference to the drawings, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art, and the scope of the present invention is within the scope of the claims.
It should be noted that all directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
Technical solutions between various embodiments can be combined with each other, but must be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
Claims (9)
1. The utility model provides an inner gallery of dam that is suitable for uneven settlement, characterized by: comprises a first gallery (1), a second gallery (2) and a connecting piece (3), the connecting piece (3) is connected between the first gallery (1) and the second gallery (2), the connecting piece (3) is an integrated structure consisting of a small-caliber section (3-1), a gradual change section (3-2) and a large-caliber section (3-3), the small-caliber section (3-1) is connected with the connecting end of the first gallery (1), the large-caliber section (3-3) is connected with the connecting end of the second gallery (2), the structure of the connection end of the first gallery (1) is the same as that of the connection piece (3), the connecting end of the second gallery (2) is a straight gallery with the same caliber, and the inner diameter of the small-caliber section at the connecting end of the first gallery (1), the inner diameter of the small-caliber section (3-1) of the connecting piece (3) and the inner diameter of the second gallery (2) are the same.
2. The dam gallery of claim 1, wherein: the small-caliber section (3-1) of the connecting piece (3) is connected inside the large-caliber section of the connecting end of the first gallery (1), and the large-caliber section (3-3) of the connecting piece (3) is sleeved outside the connecting end of the second gallery (2).
3. The dam gallery of claim 1 or 2, wherein: the connecting pieces (3) are provided with a plurality of connecting pieces, and the connecting pieces (3) are connected in sequence in a mode that the large-caliber section (3-3) of one connecting piece (3) is sleeved with the small-caliber section (3-1) of the adjacent connecting piece (3).
4. The in-dam gallery of claim 3 for differential settlement, wherein: the water stopping device is characterized in that a water stopping portion (4) for sealing water stopping is arranged in a gap of a connecting position between the first gallery (1), the second gallery (2) and the plurality of connecting pieces (3) and filled with a joint filling material (5), the water stopping portion (4) is a water stopping rod or a water stopping strip, the water stopping rod or the water stopping strip is made of a water-swelling rubber material, the diameter of the water stopping rod or the water stopping strip is 10 cm-20 cm, and the water stopping rod or the water stopping strip is arranged at a position which is more than or equal to 20cm away from a port of the large-diameter section (3-3).
5. The in-dam gallery of claim 4 for differential settlement, wherein: leveling parts (6) are arranged between the end part of the connecting end of the second gallery (2) and the gradual change section (3-2) of the connecting piece (3), between the small-caliber section (3-1) of the connecting piece (3) and the gradual change section (3-2) of the adjacent connecting piece (3) and between the small-caliber section (3-1) of the connecting piece (3) and the gradual change section of the first gallery (1), and the leveling parts (6) are concrete, mortar or rubber blocks.
6. The dam gallery of claim 4 adapted for differential settlement, wherein: the joint filling material (5) is a two-felt three-oil, low-foaming plastic plate, a rubber plate or a pitch-impregnated wood plate.
7. The dam gallery of claim 3 adapted for differential settlement, wherein: the length ratio of the small-caliber section (3-1) to the large-caliber section (3-3) on the connecting piece (3) is 1:1, the length range is 0.5 m-2 m, and the gradient of the gradual change section (3-2) is 1: m1, wherein m1 is a slope ratio coefficient, and the value range of m1 is 0.5-1.5.
8. The dam gallery of claim 1, wherein: the first gallery (1), the second gallery (2) and the connecting piece (3) are all of reinforced concrete structures, the section of each gallery is of a city gate hole type or a horseshoe shape, the internal dimension of each section is 2.0-3.0 m in width and 2.5-3.5 m in height, and the thickness of the reinforced concrete is 30-100 cm.
9. The dam gallery of claim 8, wherein: the whole length of the connecting piece (3) is 1.5-6 m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220381140.8U CN216999852U (en) | 2022-02-24 | 2022-02-24 | Dam inner gallery suitable for uneven settlement |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202220381140.8U CN216999852U (en) | 2022-02-24 | 2022-02-24 | Dam inner gallery suitable for uneven settlement |
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| CN216999852U true CN216999852U (en) | 2022-07-19 |
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| CN202220381140.8U Active CN216999852U (en) | 2022-02-24 | 2022-02-24 | Dam inner gallery suitable for uneven settlement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115354691A (en) * | 2022-09-13 | 2022-11-18 | 成都市市政工程设计研究院有限公司 | Connection structure of prefabricated section of utility tunnel arc and cast-in-place node |
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2022
- 2022-02-24 CN CN202220381140.8U patent/CN216999852U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115354691A (en) * | 2022-09-13 | 2022-11-18 | 成都市市政工程设计研究院有限公司 | Connection structure of prefabricated section of utility tunnel arc and cast-in-place node |
| CN115354691B (en) * | 2022-09-13 | 2024-03-26 | 成都市市政工程设计研究院有限公司 | Connection structure of utility tunnel arc prefabricated section and cast-in-place node |
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