CN215165307U - Seepage-proofing panel for preventing extrusion damage of pressure vertical seam and seepage-proofing panel arrangement structure - Google Patents
Seepage-proofing panel for preventing extrusion damage of pressure vertical seam and seepage-proofing panel arrangement structure Download PDFInfo
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- CN215165307U CN215165307U CN202120797232.XU CN202120797232U CN215165307U CN 215165307 U CN215165307 U CN 215165307U CN 202120797232 U CN202120797232 U CN 202120797232U CN 215165307 U CN215165307 U CN 215165307U
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Abstract
The utility model relates to a prevent that prevention of compaction nature vertical joint from extrudeing prevention of seepage panel and prevention of seepage panel arrangement structure that destroys. The utility model aims at providing a construction is convenient, safe and reliable prevents that the perpendicular seam of nature of pressing extrudees the prevention of seepage panel and prevention of seepage panel arrangement structure of destroying to reduce reservoir seepage loss, ensure dam safe operation. The technical scheme of the utility model is that: the utility model provides a prevent prevention of seepage panel that perpendicular seam extrusion of pressability destroys which characterized in that: the anti-seepage device is characterized by comprising a panel body and a panel body. The utility model provides a prevent prevention of seepage panel arrangement structure that perpendicular seam of compressibility extrudees destruction has a plurality of seepage-proofing panels of laying in the engineering surface, its characterized in that: the anti-seepage panel is used for preventing the pressure vertical seam from being extruded and damaged, and the elastic panel on the anti-seepage panel corresponds to the vertical seam of the panel. The utility model is suitable for a water and electricity hydraulic engineering.
Description
Technical Field
The utility model relates to a prevent that prevention of compaction nature vertical joint from extrudeing prevention of seepage panel and prevention of seepage panel arrangement structure that destroys. Is suitable for water-power and water-conservancy projects.
Background
The concrete panel rock-fill dam has the advantages of investment saving, convenient construction, full utilization of local materials and the like, and is widely applied to the construction of water conservancy and hydropower engineering in China. Due to the reasons of too steep slope of river valley, the displacement of river valley direction of rockfill, the stress concentration of vertical seams, the early pouring of the face plates and the like, the phenomenon of face plate extrusion damage near the compressive vertical seams occurs in a plurality of projects, particularly the concrete anti-seepage face plates of high dams during the operation period. For a pumped storage power station, a dam generates new unrecoverable deformation under the condition of reservoir storage and discharge circulating load, and an impermeable panel is more prone to extrusion damage.
Concrete face rockfill dam engineering, particularly high dams, mainly have the following problems:
1. after the panel is damaged by extrusion, the panel needs to be emptied or the water level of a reservoir is reduced for repairing generally for the sake of safety, and the power generation benefit of a power station is greatly influenced.
2. The reasons for the extrusion damage near the vertical seam of the panel are complex, some projects still have no obvious effect after being repaired for many times, the phenomenon of extrusion damage is repeated, and a large amount of manpower and material resources are wasted for reinforcement and reinforcement.
3. Because the rockfill body is settled and deformed, some high dams are at the middle upper part elevation, and the condition of void exists under the face plate. Severe voids can cause the panel to crack or even break, and general voids can place the panel under adverse stress. The panel is hollow and the phenomenon of extrusion damage near the vertical seam further increases the safety risk of the anti-seepage panel.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is: aiming at the existing problems, the seepage-proofing panel and the seepage-proofing panel arrangement structure are convenient to construct, safe and reliable, and the pressure vertical seam is prevented from being extruded and damaged, so that the seepage loss of a reservoir is reduced, and the safe operation of a dam is ensured.
The utility model adopts the technical proposal that: the utility model provides a prevent prevention of seepage panel that perpendicular seam extrusion of pressability destroys which characterized in that: the anti-seepage device is characterized by comprising a panel body and a panel body.
The anti-seepage panel is internally provided with a panel steel bar and a reinforcing rib which penetrate through a construction joint between the panel main body and the elastic panel.
The elastic panel is 50-100 cm in width from the edge of the anti-seepage panel to the inside.
The utility model provides a prevent prevention of seepage panel arrangement structure that perpendicular seam of compressibility extrudees destruction has a plurality of seepage-proofing panels of laying in the engineering surface, its characterized in that: the anti-seepage panel is used for preventing the pressure vertical seam from being extruded and damaged, and the elastic panel on the anti-seepage panel corresponds to the vertical seam of the panel.
And a cement mortar cushion layer, a gasket and a copper water stop sheet are arranged below the vertical seam of the panel.
The anti-seepage construction method is characterized in that a chloroprene rubber rod, a plastic filler and an anti-seepage protection cover plate are sequentially arranged above the vertical seam of the panel, wherein the anti-seepage protection cover plate extends through the construction seam between the elastic panel and the panel main body on the corresponding anti-seepage panel towards two sides.
The anti-seepage protective cover sheet is adhered to the contact surface of the elastic panel by an epoxy adhesive, and the anti-seepage protective cover sheet is adhered to the contact surface of the panel body by an elastic edge sealing agent.
The anti-seepage protection cover plate is fixed on the anti-seepage panel through stainless steel flat steel matched with a stainless steel expansion bolt.
And a rubber rod is filled at the top of the nose of the copper water stop sheet.
A construction method of the seepage-proofing panel arrangement structure is characterized in that:
s1, constructing a cement mortar cushion layer below the vertical seam of the panel;
s2, constructing a gasket, wherein the gasket is placed on the cement mortar cushion layer, and the riding seam is placed in the middle;
s3, constructing a copper water stop sheet;
s4, erecting panel reinforcing steel bars and reinforcing ribs;
s5, erecting the formwork to pour the panel main body;
s6, removing the template, chiseling the construction joint, erecting the template at the vertical joint, pouring the elastic panel at one side of the vertical joint, and pouring the elastic panel at the other side;
s7, constructing a second water stop at the top of the vertical pressing seam of the panel, wherein the second water stop comprises a chloroprene rubber rod, plastic filling and an impermeable protective cover sheet.
The utility model has the advantages that: the utility model discloses the nature of pressing vertical joint both sides 50cm ~ 100cm scope use elasticity epoxy concrete that easily takes place the extrusion destruction at the riverbed panel, has the compressive strength higher than ordinary panel concrete, makes the nature of pressing vertical joint position can bear bigger local compressive stress, has improved the anti extrusion destruction ability in vertical joint position greatly.
The vertical seam of the panel is crushed and damaged mostly because the contact surface of two side panels is obviously reduced after the panel is deformed, thereby causing the local pressure stress to be overlarge and gradually developed and formed. The utility model discloses well elasticity epoxy concrete compression bullet mould is low, and is flexible good, passes power evenly, has apparent homogenization to local compressive stress.
The utility model discloses well elasticity epoxy concrete later stage kick-backs, do to dwindle, cross seam, seam face chisel hair with the reinforcing bar on the panel joint face to assist and cover, banding agent banding with the prevention of seepage protection cover plate, the structure is reliable, has guaranteed that the seam is not infiltration after reservoir retaining.
Some high dams are at middle-upper elevation, and have a void condition under the panel, and the panel can be bent and cracked or even broken when the problem is serious, and the problems are often generated and developed near the compressive vertical seam with the most concentrated stress. The utility model discloses set up the elasticity epoxy concrete of certain width in panel vertical joint both sides, its bending strength is more than or equal to 12MPa, has promoted the anti fracture ability of panel greatly, is showing the production that reduces or avoid bending crack.
The utility model discloses well elasticity epoxy concrete only is used in pressing nature vertical joint both sides 50cm ~ 100cm, and the scope is little, and the investment that the engineering construction phase increased is limited, has nevertheless avoided pressing nature vertical joint because of the extrusion destruction to reduce the water level restoration problem at reservoir retaining rear panel, and economic benefits is showing.
Drawings
Fig. 1 is a schematic structural diagram of the embodiment.
Fig. 2 is a sectional view of the embodiment.
1. An elastic panel; 2. a panel main body; 3. constructing a joint; 4. a plastic filler; 5. a neoprene bar; 6. an impermeable protective cover sheet; 7. an epoxy adhesive; 8. an elastic edge-sealing agent; 9. vertical seams; 10. a copper water stop sheet; 11. a gasket; 12. a cement mortar cushion layer; 13. panel reinforcing steel bars; 14. and (5) reinforcing ribs.
Detailed Description
The embodiment provides an impermeable panel arrangement structure for preventing the extrusion damage of a pressure vertical seam, which comprises a panel main body and an elastic panel positioned at the edge of the impermeable panel and close to the pressure vertical seam, wherein the elastic panel is formed by pouring elastic epoxy concrete. In the embodiment, the elastic panel is arranged on the two sides of the pressure vertical seam which is easy to be crushed by extrusion and has the width of 50 cm-100 cm.
In this example, the panel reinforcing bars and the reinforcing ribs are arranged in the impermeable panel, and the panel reinforcing bars and the reinforcing ribs penetrate through the construction joints between the panel main body and the elastic panel.
In the embodiment, a cement mortar cushion layer is arranged below the vertical seam of the panel, and a gasket and a W-shaped copper water stop sheet are sequentially arranged above the cement mortar cushion layer.
In this example, a neoprene bar, plastic filler and an impermeable protective cover sheet are sequentially disposed over the vertical seam of the panel, wherein the impermeable protective cover sheet extends laterally across the construction seam between the elastic panel and the panel body of the corresponding impermeable panel by about 50cm outwardly.
In the embodiment, the contact surface of the anti-seepage protective cover plate and the elastic panel is bonded by adopting an epoxy adhesive, and the contact surface of the anti-seepage protective cover plate and the panel body is bonded by adopting an elastic edge sealing agent. The anti-seepage protection cover plate is fixed on the anti-seepage panel through stainless steel flat steel matched with a stainless steel expansion bolt.
In the embodiment, the elastic epoxy concrete is a polymer prepared from elastic epoxy resin and a filler, and has the advantages of small density, high compressive strength and flexural strength, strong bonding performance with concrete, low compression elastic modulus, excellent plasticity and the like, wherein the compressive strength is 30-60 MPa, the flexural strength is not less than 12MPa, and the bonding strength is not less than 3 MPa. In this example, the concrete of the panel body is not less than C25, a secondary grade.
In the embodiment, the plastic filler is a main impermeable body of the second water stop at the top of the pressing vertical seam of the panel, and is generally made of SR material or GB material, and the area of the filled section is 200cm2～450cm2. The chloroprene rubber rod plays a role of filling a pressing vertical seam of the panel, and the diameter is generally 30-50 mm. The anti-seepage protective cover plate plays a role in protecting the plastic water-stopping filler and is generally selected along with the plastic water-stopping material.
In the embodiment, the epoxy adhesive ensures that the elastic panel is tightly bonded with the anti-seepage protective cover plate; the elastic edge sealing agent ensures that the panel main body is tightly adhered to the anti-seepage protective cover plate.
The copper water stop sheet in the embodiment is a first water stop line of the pressing vertical seam of the panel. The thickness of the copper water stop sheet is 1 mm-1.2 mm, and the coiled material is transported to a construction site and pressed into the size required by design on site. The top of the nose of the copper water stop sheet is filled with a rubber rod, and the rubber rod is filled with a polyurethane foam plate or other plastic materials and is subjected to sealing treatment.
The gasket is arranged below the copper water stop sheet in the embodiment, and the copper water stop sheet is protected. The gasket may be rubber, polyvinyl chloride or geotextile. The thickness of the gasket is preferably 4mm to 6 mm.
The cement mortar cushion layer in the embodiment is used for supporting the copper water stop sheet and the side mold and is the foundation for controlling the size of the panel. The total width of the cement mortar cushion layer is larger than that of the copper water stop sheet, the strength grade is not lower than M10, and the thickness is preferably 5 cm-10 cm.
In the embodiment, the panel reinforcing bars are kept unchanged in conventional design, and generally adopt three-grade steel with the diameter of 18-22 mm and the distance of 15-20 cm, and are arranged in a single-layer bidirectional mode or a double-layer bidirectional mode.
According to the calculation result of the stress of the dam panel, reinforcing ribs are arranged in the width range of 1-2 m near the vertical compressive seam of the panel, so that the panel is prevented from being damaged by extrusion. The reinforcing ribs are generally made of three-level steel, the diameter is 18-22 mm, the distance is 15-20 cm, and the reinforcing ribs are arranged in a double-layer bidirectional mode; when the thickness of the panel is larger than 50cm, the joint bar can be arranged at the construction joint of the panel concrete and the epoxy concrete, the joint bar is made of three-grade steel, the diameter is 18 cm-25 mm, the distance is about 30cm, and the joint bar is inserted into the elastic epoxy concrete by 30 cm-50 cm.
The construction method of the impermeable panel arrangement structure for preventing the crushing damage of the compressive vertical seams in the embodiment comprises the following steps:
and S1, constructing a cement mortar cushion layer at the bottom of the vertical joint of the panel. The total width of the cement mortar cushion layer is preferably larger than the width of the W-shaped copper water stop sheet, the strength grade is not lower than M10, and the thickness is 5 cm-10 cm.
And S2, constructing a gasket. The gasket is arranged on the cement mortar cushion layer, and the riding seam is arranged in the middle. The gasket may be rubber, polyvinyl chloride or geotextile. The thickness of the gasket is 4 mm-6 mm.
And S3, constructing the W-shaped copper water stop sheet. The copper water stop sheet has a nose height of 30-50 mm, a nose width of 12mm, a leg standing height of 60-80 mm, two flat sections with a width not less than 160mm and a thickness of 1-1.2 mm. The rubber rod is filled at the top of the nose of the copper water stop sheet, and is filled with polyurethane foam plates or other plastic materials and is subjected to sealing treatment.
And S4, erecting a panel steel bar, a reinforcing rib and a joint bar, wherein the steel bar passes through the construction joint.
And S5, pouring the panel body. And arranging a wood template at a construction joint between the panel main body and the elastic panel, and casting panel concrete in situ to form the panel main body, wherein the label of the panel concrete is not lower than C25 and is in secondary gradation.
S6, removing the template, chiseling a construction joint, erecting the template at the position of the compressive vertical joint, and pouring elastic epoxy concrete on one side of the vertical joint; filling compressible materials such as anti-extrusion plates and the like or coating asphalt emulsion on the surface of the vertical seam with panel compressibility; and pouring elastic epoxy concrete on the other side.
S7, constructing a second water stop at the top of the vertical pressing seam of the panel, wherein the second water stop comprises a chloroprene rubber rod, plastic fillers and a top anti-seepage protective cover sheet. The anti-seepage protective cover sheet is 5-7 mm thick, the width is controlled according to the length which is extended to about 50cm outside the joint of the panel concrete and the epoxy concrete, the contact surface of the anti-seepage protective cover sheet and the epoxy concrete is bonded by epoxy adhesive (epoxy primer), the contact surface of the anti-seepage protective cover sheet and the panel concrete is bonded by elastic edge sealing agent, and finally edge sealing treatment is carried out by edge sealing agent. If necessary, stainless flat steel, stainless steel expansion bolts and the like can be additionally arranged to fix the anti-seepage protective cover plate.
Claims (8)
1. The utility model provides a prevent prevention of seepage panel that perpendicular seam extrusion of pressability destroys which characterized in that: the anti-seepage device is characterized by comprising a panel body and a panel body.
2. A barrier panel to prevent crush damage in a compressive vertical seam as defined in claim 1, wherein: the anti-seepage panel is internally provided with a panel steel bar and a reinforcing rib which penetrate through a construction joint between the panel main body and the elastic panel.
3. A barrier panel to prevent crush damage in a compressive vertical seam as defined in claim 1 or claim 2, wherein: the elastic panel is 50-100 cm in width from the edge of the anti-seepage panel to the inside.
4. The utility model provides a prevent prevention of seepage panel arrangement structure that perpendicular seam of compressibility extrudees destruction has a plurality of seepage-proofing panels of laying in the engineering surface, its characterized in that: the anti-seepage panel is the anti-seepage panel for preventing the extrusion damage of the pressure vertical seam according to any one of claims 1 to 3, and the elastic panel on the anti-seepage panel corresponds to the vertical seam of the panel.
5. The barrier panel arrangement to prevent crushing failure of a compressive vertical seam according to claim 4 wherein: a cement mortar cushion layer, a gasket and a copper water stop sheet are arranged below the vertical seam of the panel,
the anti-seepage construction method is characterized in that a chloroprene rubber rod, a plastic filler and an anti-seepage protection cover plate are sequentially arranged above the vertical seam of the panel, wherein the anti-seepage protection cover plate extends through the construction seam between the elastic panel and the panel main body on the corresponding anti-seepage panel towards two sides.
6. The barrier panel arrangement to prevent crushing failure of a compressive vertical seam according to claim 5 wherein: the anti-seepage protective cover sheet is adhered to the contact surface of the elastic panel by an epoxy adhesive, and the anti-seepage protective cover sheet is adhered to the contact surface of the panel body by an elastic edge sealing agent.
7. The barrier panel arrangement to prevent crushing of a compressive vertical seam according to claim 5 or 6 wherein: the anti-seepage protection cover plate is fixed on the anti-seepage panel through stainless steel flat steel matched with a stainless steel expansion bolt.
8. The barrier panel arrangement to prevent crushing failure of a compressive vertical seam according to claim 5 wherein: and a rubber rod is filled at the top of the nose of the copper water stop sheet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120797232.XU CN215165307U (en) | 2021-04-19 | 2021-04-19 | Seepage-proofing panel for preventing extrusion damage of pressure vertical seam and seepage-proofing panel arrangement structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120797232.XU CN215165307U (en) | 2021-04-19 | 2021-04-19 | Seepage-proofing panel for preventing extrusion damage of pressure vertical seam and seepage-proofing panel arrangement structure |
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| Publication Number | Publication Date |
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| CN215165307U true CN215165307U (en) | 2021-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202120797232.XU Active CN215165307U (en) | 2021-04-19 | 2021-04-19 | Seepage-proofing panel for preventing extrusion damage of pressure vertical seam and seepage-proofing panel arrangement structure |
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| CN (1) | CN215165307U (en) |
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- 2021-04-19 CN CN202120797232.XU patent/CN215165307U/en active Active
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