Connecting structure used between concrete face rockfill dam and mass concrete structure

Abstract

The utility model discloses a connecting structure used between a concrete face rockfill dam and a mass concrete structure, a reinforced concrete support is arranged between the concrete face rockfill dam and the mass concrete structure, and the reinforced concrete support is located between a cushion material of the rockfill dam and a concrete face of the rockfill dam. A first water blocking structure is arranged between the reinforced concrete support and the mass concrete structure, a second water blocking structure is arranged between the reinforced concrete support and a concrete panel of the rock-fill dam, and a surface water stop is arranged on the surface of the reinforced concrete support and the surface of the concrete panel of the rock-fill dam. The sliding requirement of the concrete face is met, reservoir water is prevented from penetrating into the dam body, and therefore it is guaranteed that the combination position of the concrete face rockfill dam and mass concrete is safe and reliable, and the dam operation requirement is met.

Description

Technical Field

[0001] The utility model belongs to the field of water conservancy and hydropower engineering, and in particular relates to a connection structure between a concrete panel rockfill dam and a large-volume concrete structure. Background Art

[0002] In water conservancy and hydropower projects, especially pumped storage power station projects, the reservoir water retaining structure adopts a concrete panel rockfill dam, and the dam shoulders are generally located on both sides of the river channel. The discharge or water diversion structure is separated from the dam type and arranged separately. At present, some projects need to combine the concrete panel rockfill dam with the discharge structure such as the shore spillway due to terrain and other reasons, and set a vertical seam at the junction between the outer side of the spillway side pier and the concrete panel of the rockfill dam. In order to save investment, some pumped storage power stations try to combine the concrete panel rockfill dam with the water diversion structure such as the inlet / outlet, and set a vertical seam at the junction between the inlet / outlet side wall and the concrete panel.

[0003] When a concrete face rockfill dam is combined with a large concrete structure, the following problems need to be solved due to the frequent changes in reservoir water levels (especially pumped storage power stations): (1) The vertical joints at the joints need to adapt to the repeated opening and squeezing movement characteristics of the concrete panels under different water pressures to prevent the concrete panels from being damaged at the joints. (2) The vertical joints at the joints need to be designed with reliable water-blocking structures to prevent reservoir water from seeping into the dam body and causing the dam to become unstable and damaged. (3) The joints need to have supports with sufficient rigidity to adapt to the displacement and compression deformation of the panels to prevent the back of the panels from being emptied and damaged. Utility Model Content

[0004] The purpose of the utility model is to provide a connection structure between a concrete panel rockfill dam and a large concrete structure. That is, a reinforced concrete support is designed at the joint to meet the sliding requirements of the concrete panel, and a water-blocking structure is provided at the joint between the reinforced concrete support and the concrete panel and at the joint between the reinforced concrete support and the large concrete structure to prevent reservoir water from penetrating into the dam body, thereby ensuring that the joint between the concrete panel rockfill dam and the large concrete structure is safe and reliable and meets the operation requirements.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A connection structure between a concrete panel rockfill dam and a large-volume concrete structure, wherein a reinforced concrete support is arranged between the concrete panel rockfill dam and the large-volume concrete structure, the reinforced concrete support is located between the cushion material of the rockfill dam and the concrete panel of the rockfill dam, a first water-blocking structure is arranged between the reinforced concrete support and the large-volume concrete structure, a second water-blocking structure is arranged between the reinforced concrete support and the concrete panel of the rockfill dam, and a surface waterstop is arranged on the surface of the reinforced concrete support and the concrete panel of the rockfill dam.

[0007] Preferably, the reinforced concrete support is an inverted "L"-shaped reinforced concrete structure consisting of a horizontal part and a vertical part, the horizontal part is a support platform, a support pad is arranged on the support platform, and the concrete panel of the rockfill dam is arranged on the support pad.

[0008] Preferably, the mass concrete structure comprises mounting holes, and the mounting holes are arranged at intervals along the longitudinal length direction of the reinforced concrete support.

[0009] Preferably, the reinforced concrete support includes steel bars and a support embedded steel plate, the support embedded steel plate is arranged on the surface of the supporting platform of the reinforced concrete support, and the steel bars are arranged inside the reinforced concrete support.

[0010] Preferably, the steel bars include first type steel bars, second type steel bars, third type steel bars and fourth type steel bars, the third type steel bars are "L"-shaped, inserted into the mounting hole, the mounting hole is filled with M20 mortar, and the rest is arranged in the reinforced concrete support, the fourth type steel bars are straight-line-shaped, and are vertically and evenly arranged along the third type steel bars in the reinforced concrete support, the fourth type steel bars and the third type steel bars form a steel mesh, the first type steel bars are broken line-shaped, the second type steel bars are straight-line-shaped, the first type steel bars are arranged on the water-facing surface of the reinforced concrete support, and the second type steel bars are vertically and evenly arranged along the first type steel bars.

[0011] Preferably, the first water-blocking structure comprises a construction joint and a copper waterstop between the construction joints, the construction joint is located between the reinforced concrete support and the massive concrete structure, and the copper waterstop between the construction joints passes through the construction joint.

[0012] Preferably, the concrete panel of the rockfill dam comprises a concrete panel embedded steel plate, and the concrete panel embedded steel plate is arranged at the bottom of the concrete panel of the rockfill dam.

[0013] Preferably, the surface parts of the joints of the reinforced concrete support and the concrete panel of the rockfill dam are designed with angle cutting to form the angle cutting edge lines of the support and the concrete panel, and the angle cutting edge lines of the support and the concrete panel form a "V"-shaped notch.

[0014] Preferably, the second water-blocking structure includes a structural joint, a copper waterstop between the structural joints and an asphalt wooden board. The structural joint is located between the concrete panel of the rockfill dam and the reinforced concrete support. The copper waterstop between the structural joints passes through the structural joint, and the structural joint is filled with an asphalt wooden board.

[0015] Preferably, the surface waterstop includes a chloroprene rubber rod and an SR plastic filler, the chloroprene rubber rod and the SR plastic filler are arranged on the "V"-shaped notch from bottom to top, a protective cover sheet is arranged on the surface of the SR plastic filler, the protective cover sheet extends to the concrete panel of the rockfill dam and the surface of the reinforced concrete support, and PVC strips and stainless steel angles are arranged above both ends of the protective cover sheet, a plurality of expansion bolts are arranged at intervals above the stainless steel angles along the longitudinal length direction of the support, and the ends of the protective cover sheet are respectively sealed with the concrete panel of the rockfill dam and the reinforced concrete support using an edge sealing agent.

[0016] The beneficial effects of the utility model are as follows:

[0017] (1) The concrete panel support structure is safe and reliable. The concrete panel is simple to deform under stress. It only opens and closes within the plane and slides without any out-of-plane displacement or deformation. This can effectively prevent the panel end supports from breaking and being damaged due to uneven stress.

[0018] (2) The use of materials with good anti-slip properties between the concrete panel and the supporting structure can effectively reduce the friction between the concrete panel and the support, and prevent the support surface from being worn and damaged when the concrete panel slides.

[0019] (3) Water-blocking structures are installed at the joints between the concrete face plate and the reinforced concrete support structure, and at the structural positions between the support and the large-volume concrete structure, which can effectively prevent water seepage between the joints when the face plate slides, thereby ensuring the safe operation of the concrete face plate rockfill dam. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional effect diagram of the connection structure between the concrete panel rockfill dam and the large-volume concrete structure of the utility model.

[0021] Figure 2 It is a detailed cross-sectional layout diagram of the connection structure between the concrete face rockfill dam and the massive concrete structure of the utility model.

[0022] Figure 3 yes Figure 2 Detailed cross-section of section A.

[0023] Figure 4 yes Figure 3 Fixing details of Part B (surface water stop).

[0024] In the figure: 1. reinforced concrete bearing; 2. cushion material of rockfill dam; 3. concrete panel of rockfill dam; 4. large concrete structure; 5. steel bars, including first type steel bars 5a, second type steel bars 5b, third type steel bars 5c, and fourth type steel bars 5d; 6. copper waterstop between construction joints; 7. construction joints; 8. mounting holes; 9. M20 mortar; 10. water flow direction; 11. embedded steel plate of bearing; 12. bearing pad; 13. embedded steel plate of concrete panel; 14. asphalt wood board; 15. copper waterstop between structural joints; 16. chloroprene rubber rod; 17. structural joint; 18. SR plastic filler; 19. corner cut edge of bearing; 20. corner cut edge of concrete panel; 21. expansion bolt; 22. protective cover; 23. PVC pressure strip; 24. stainless steel angle steel; 25. edge sealant. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be clearly and completely described below in conjunction with the accompanying drawings of the utility model.

[0026] like Figure 1-Figure 4 As shown, the transverse direction is the length direction from the concrete panel 3 of the rockfill dam to the large-volume concrete structure 4, and the longitudinal direction is the length direction perpendicular to the transverse direction. The thickness is the water flow direction.

[0027] A connection structure between a concrete panel rockfill dam and a large concrete structure comprises a reinforced concrete support 1, a support pad 12, a first water blocking structure, a second water blocking structure and a surface water stop.

[0028] The reinforced concrete support 1 is installed between the concrete panel rockfill dam and the large-volume concrete structure 4. Part of the reinforced concrete support 1 is located between the cushion material 2 of the panel rockfill dam and the concrete panel 3 of the rockfill dam. A first water-blocking structure is installed between the reinforced concrete support 1 and the large-volume concrete structure 4, a second water-blocking structure is installed between the reinforced concrete support 1 and the concrete panel 3 of the rockfill dam, and a surface waterstop is arranged on the surface of the reinforced concrete support 1 and the concrete panel 3 of the rockfill dam.

[0029] The reinforced concrete support 1 is an inverted "L"-shaped reinforced concrete structure consisting of a horizontal part and a vertical part. The horizontal part is a support platform, on which a support pad 12 is installed. The concrete panel 3 of the rockfill dam is arranged on the support pad 12.

[0030] The massive concrete structure 4 comprises mounting holes 8 .

[0031] On the large concrete structure 4, drilling positions are located at intervals of 20 cm along the longitudinal direction of the reinforced concrete support 1 and drilling is performed to form mounting holes 8, and the mounting holes 8 are 1.35 m deep.

[0032] The reinforced concrete support 1 comprises steel bars 5, a support embedded steel plate 11, M20 mortar 9 and a corner cutting edge 19. The support embedded steel plate 11 is embedded in the surface of the support platform of the reinforced concrete support 1, and the steel bars 5 are embedded in the reinforced concrete support 1.

[0033] The cross-section of the reinforced concrete support 1 is "L" shaped, and its longitudinal length is the same as that of the concrete panel 3 of the rockfill dam. The long side of the "L" shaped reinforced concrete support serves as the support platform of the concrete panel 3 of the rockfill dam, and the lateral length of the support platform is 1m, and the thickness of the support platform along the water flow direction 10 is 50cm. The short side of the "L" shaped reinforced concrete support contacts the large-volume concrete structure 4 to form a construction joint 7, and the thickness of the short side along the water flow direction 10 is the thickness of the long side + the thickness of the concrete panel 3 of the rockfill dam + the thickness of the support pad 12, and the lateral length of the short side is 50cm. The steel bars 5 include first-class steel bars 5a, second-class steel bars 5b, third-class steel bars 5c, and fourth-class steel bars 5d.

[0034] The steel bars 5 are all made of HRB500 grade steel and processed in a processing plant. The first type of steel bar 5a has a diameter of 16mm and is in a broken line shape. Its two ends are 30cm long and the middle oblique length is 7cm. The steel bars 5a are arranged every 0.2m along the length of the support; the second type of steel bar 5b has a diameter of 16mm and is in a straight line shape. It is the same length as the support longitudinally, and there are 6 bars for each support; the third type of steel bar 5c has a diameter of 32mm and is in an "L" shape. The long side is 2.25m long and the short side is 50cm long. The number is the same as the second type of steel bar 5b; the fourth type of steel bar 5d has a diameter of 25mm and is in a straight line shape. The length is the same as the first type of steel bar 5a, and there are 6 bars for each support.

[0035] The first type of steel bars 5a and the second type of steel bars 5b are arranged on the water-facing surface of the reinforced concrete support 1. The second type of steel bars 5b are evenly arranged vertically along the first type of steel bars 5a. The concrete protective layer of the first type of steel bars 5a is 10 cm.

[0036] The third type of steel bars 5c are inserted into the mounting hole 8 of the large-volume concrete structure 4 with an insertion length of 1.3m. The mounting hole 8 is filled with M20 mortar 9, and the rest is arranged in the reinforced concrete support 1. The third type of steel bars 5c are 10cm away from the concrete protective layer on the support surface; the fourth type of steel bars 5d are arranged vertically and evenly along the third type of steel bars 5c in the reinforced concrete support 1, and the fourth type of steel bars 5d and the third type of steel bars 5c form a steel mesh.

[0037] The first water-blocking structure is located at the joint between the concrete support 1 and the large-volume concrete structure 4, and includes a construction joint 7 and two copper water-stops 6 between the construction joints.

[0038] The construction joint 7 is located between the reinforced concrete support 1 and the large concrete structure 4. The copper waterstop 6 between the construction joints passes through the construction joint 7. Two copper waterstops 6 are installed in total. The distance between the two construction joints and the surfaces of the two ends of the reinforced concrete support 1 is 20 cm.

[0039] The concrete panel 3 of the rockfill dam includes a concrete panel embedded steel plate 13 , and the concrete panel embedded steel plate 13 is installed at the bottom of the concrete panel 3 of the rockfill dam.

[0040] The joint surface of the reinforced concrete support 1 and the concrete panel 3 of the rockfill dam is designed with a chamfered angle to form a chamfered edge line 19 of the support and a chamfered edge line 20 of the concrete panel. The chamfered edge line 19 is 10 cm long. The chamfered edge line 20 of the concrete panel is 10 cm long. The chamfered edge line 19 of the support and the chamfered edge line 20 of the concrete panel form a "V"-shaped notch for installing surface water stop.

[0041] The second water-blocking structure is located at the joint between the concrete support 1 and the concrete face plate 3 of the rockfill dam, and includes a structural joint 17 , a copper water stop 15 between the structural joints, and an asphalt wood board 14 .

[0042] The width of the structural joint 17 between the concrete face plate 3 and the reinforced concrete support 1 of the rockfill dam is 2 cm. The copper water stop 15 passes through the structural joint 17 , and the structural joint 17 is filled with asphalt wood boards 14 .

[0043] The surface waterproofing includes a chloroprene rubber rod 16 , an SR plastic filler 18 , an expansion bolt 21 , a protective cover sheet 22 , a PVC pressure strip 23 , a stainless steel angle steel 24 , an expansion bolt 21 and an edge sealing agent 25 .

[0044] The chloroprene rubber rod 16 and the SR plastic filler 18 are filled from bottom to top in the "V"-shaped gap between the concrete panel 3 and the reinforced concrete support 1 of the rockfill dam on the water flow direction side. The protruding part of the SR plastic filler 18 outside the panel is designed to be semicircular with a radius of 12 cm and a protruding height of 8 cm. The surface of the SR plastic filler 18 is covered with a protective cover sheet 22, which extends to the surface of the concrete panel 3 and the reinforced concrete support 1 of the rockfill dam, and PVC strips 23 and stainless steel angle steels 24 are laid above the two ends of the protective cover sheet 22. Expansion bolts 21 are evenly arranged above the stainless steel angle steels 24 along the longitudinal length direction of the support at intervals of 0.5m, and the expansion bolts 21 fix the protective cover sheet 22. The ends of the protective cover sheet 22 are sealed with edge sealants 25 between the concrete panel 3 and the reinforced concrete support 1 of the rockfill dam.

[0045] The principle is as follows: the reinforced concrete bearing 1 is fixed on the large-volume concrete structure 4 to provide a reliable support and sliding platform for the concrete panel 3 of the rockfill dam. The bearing pad 12 adapts to the repeated tensioning and extrusion movements of the concrete panel 3 of the rockfill dam. The copper waterstop 6 between the reinforced concrete bearing 1 and the large-volume concrete structure 4 and the waterstop structure between the reinforced concrete bearing 1 and the concrete panel 3 of the rockfill dam prevent reservoir water from seeping into the dam body, thereby improving the operational stability of the dam.

[0046] The construction and installation process of this utility model is as follows:

[0047] (I) Material processing and selection

[0048] Processing of steel bars 5: Steel bars 5 include first-class steel bars 5a, second-class steel bars 5b, third-class steel bars 5c, and fourth-class steel bars 5d, all of which are made of HRB500 grade steel and processed in a processing plant. The first-class steel bars 5a have a diameter of 16mm and are in a broken line shape. The length of both ends is 30cm, and the oblique length in the middle is 7cm. The steel bars 5a are arranged every 0.2m along the length of the support; the second-class steel bars 5b have a diameter of 16mm and are in a straight line shape. They are the same length as the support longitudinally, and there are 6 bars for each support; the third-class steel bars 5c have a diameter of 32mm and are in an "L" shape. The long side is 2.25m and the short side is 50cm. The number is the same as the second-class steel bars 5b; the fourth-class steel bars 5d have a diameter of 25mm and are in a straight line shape. The length is the same as the first-class steel bars 5a, and there are 6 bars for each support.

[0049] Copper waterstop 6 processing: The copper waterstop is bent at both ends and has a "nose" shape in the middle, with a thickness of 1mm to 1.2mm, a bending length of 2.5cm at both ends, a bending angle of 45°, a middle nose width of 2cm, a height of 3cm, and an unfolded width of 50cm.

[0050] Steel plate processing: The steel plate is made of 1cm thick Q345 steel, of which the support embedded steel plate 11 is 1m wide and has the same length as the reinforced concrete support in the longitudinal direction; the concrete panel embedded steel plate 13 is 1.2m wide and has the same length as the support embedded steel plate 11.

[0051] Steel processing: The stainless steel angle steel 24 adopts L50x50, 5mm thick specification steel. Each reinforced concrete support 1 requires two, and each has the same longitudinal length as the reinforced concrete support 1.

[0052] Support pad 12: It is made of polytetrafluoroethylene plate with less friction, 6mm thick, 1m wide, and the same length as the reinforced concrete support 1 in the longitudinal direction.

[0053] PVC layering strips 23: 2 in total, 5 cm in width, and the same length as the reinforced concrete support 1 in the longitudinal direction.

[0054] The protective cover sheet 22 is made of EPDM rubber, has a width of 43 cm, and is the same length as the reinforced concrete support 1 in the longitudinal direction.

[0055] (II) Construction of large concrete structures

[0056] Before pouring the mass concrete structure, install two copper water stops 6 at the construction joint 7 between the reinforced concrete support 1 and the mass concrete structure 4, and the distance between the copper water stops 6 and the surfaces of both ends of the reinforced concrete support 1 is 20 cm. After installation, the pouring and curing of the mass concrete structure 4 are completed according to the construction requirements, and the next process of equal strength time is not less than 14 days.

[0057] (III) Construction of connecting steel bars between reinforced concrete support 1 and massive concrete structure 4

[0058] After the rolling construction of the cushion material 2 of the rockfill dam is completed, the position and range of the construction joint 7 between the surface of the large-volume concrete structure 4 and the reinforced concrete support 1 are located and roughened. On the large-volume concrete structure 4, the drilling position is located at a spacing of 20 cm along the longitudinal length direction of the reinforced concrete support 1 and drilling is performed to form installation holes 8. The installation holes 8 are 1.35 meters deep, and the third-class steel bars 5c are installed. The third-class steel bars 5c extend into the installation holes 8 for a length of 1.3 meters. The holes are filled with M20 mortar 9. The fourth-class steel bars 5d in the reinforced concrete support 1 are evenly arranged vertically along the third-class steel bars 5c to form a steel mesh with the third-class steel bars 5c. The concrete protective layer of the third-class steel bars 5c is 10 cm.

[0059] (IV) Construction of reinforced concrete support 1

[0060] The cross-section of the reinforced concrete support 1 is "L" shaped, and its longitudinal length is the same as that of the concrete panel 3 of the rockfill dam. The long side of the "L" shape serves as the support platform of the concrete panel 3 of the rockfill dam. The horizontal length of the support platform is 1m, and the surface is pre-embedded with a support embedded steel plate 11. The thickness of the support platform along the water flow direction 10 is 50cm. The short side of the "L" shape contacts the large-volume concrete structure 4 to form a construction joint 7. The thickness of the short side along the water flow direction 10 is the thickness of the long side + the thickness of the concrete panel 3 of the rockfill dam + the thickness of the support pad 12, and the horizontal length of the short side is 50cm. The surface of the reinforced concrete support 1 in contact with the concrete panel 3 of the rockfill dam is provided with a chamfered edge line 19, and the length of the chamfered edge is 10cm. The first type of steel bars 5a and the second type of steel bars 5b on the water-facing surface of the reinforced concrete support 1 are installed in sequence, wherein the concrete protective layer of the first type of steel bars 5a is 10 cm, the copper water stop 15 between the structural seams in the structural seams 17 is installed, and the support embedded steel plate 11 on the surface of the reinforced concrete support 1 is installed. After the installation work is completed, the reinforced concrete support 1 is cast and maintained.

[0061] (V) Construction of concrete face 3 of rockfill dam

[0062] The structural joint 17 between the concrete panel 3 of the rockfill dam and the reinforced concrete support 1 is 2 cm wide. Before pouring the concrete panel 3 of the rockfill dam, the support pad 12 is installed on the surface of the reinforced concrete support 1, the concrete panel embedded steel plate 13 is installed at the bottom of the concrete panel 3 of the rockfill dam, and the asphalt wood board 14 is filled in the structural joint 17. The surface of the concrete panel 3 of the rockfill dam connected with the reinforced concrete support 1 is designed with a chamfered angle to form a chamfered edge line 20 of the concrete panel, and the chamfered angle side length is 10 cm. After the installation work is completed, the concrete panel 3 of the rockfill dam is poured and maintained.

[0063] (VI) Surface water stopping construction between the concrete face plate 3 and the reinforced concrete support 1 of the rockfill dam

[0064] After the concrete face plate 3 of the rockfill dam reaches the design strength, a 30mm diameter chloroprene rubber rod 16 and SR plastic filler 18 are filled in the "V"-shaped gap between the concrete face plate 3 of the rockfill dam on the water flow direction side and the reinforced concrete support 1. The protruding part of the SR plastic filler 18 outside the face plate is designed to be semicircular, with a radius of 12cm and a protruding height of 8cm. It is covered with a protective cover sheet 22, and a PVC pressure strip 23 and a stainless steel angle steel 24 are laid on the top of the protective cover sheet 22. The protective cover sheet 22 is fixed with expansion bolts 21 with a spacing of 0.5m. The edge sealing agent 25 is used to seal the end of the protective cover sheet 22 and the concrete face plate 3 of the rockfill dam.

Claims

1. A connection structure between a concrete face rockfill dam and a large concrete structure, characterized in that: A reinforced concrete support is arranged between the concrete panel rockfill dam and the large-volume concrete structure, the reinforced concrete support is located between the cushion material of the rockfill dam and the concrete panel of the rockfill dam, a first water-blocking structure is arranged between the reinforced concrete support and the large-volume concrete structure, a second water-blocking structure is arranged between the reinforced concrete support and the concrete panel of the rockfill dam, and a surface waterstop is arranged on the surface of the reinforced concrete support and the concrete panel of the rockfill dam.

2. The connection structure between a concrete face rockfill dam and a large concrete structure according to claim 1, characterized in that: The reinforced concrete support is an inverted "L"-shaped reinforced concrete structure consisting of a horizontal part and a vertical part. The horizontal part is a support platform, and a support pad is arranged on the support platform. The concrete panel of the rockfill dam is arranged on the support pad.

3. The connection structure between a concrete face rockfill dam and a large concrete structure according to claim 1, characterized in that: The mass concrete structure comprises mounting holes, and the mounting holes are arranged at intervals along the longitudinal length direction of the reinforced concrete support.

4. The connection structure between a concrete face rockfill dam and a large concrete structure according to claim 3, characterized in that: The reinforced concrete support comprises steel bars and a support embedded steel plate. The support embedded steel plate is arranged on the surface of a support platform of the reinforced concrete support, and the steel bars are arranged inside the reinforced concrete support.

5. The connection structure between a concrete face rockfill dam and a large concrete structure according to claim 4, characterized in that: The steel bars include first type steel bars, second type steel bars, third type steel bars and fourth type steel bars. The third type steel bars are "L" shaped and inserted into the mounting holes. The mounting holes are filled with M20 mortar, and the remaining parts are arranged in the reinforced concrete support. The fourth type steel bars are straight-line shaped and are vertically and evenly arranged along the third type steel bars in the reinforced concrete support. The fourth type steel bars and the third type steel bars form a steel mesh. The first type steel bars are broken-line shaped and the second type steel bars are straight-line shaped. The first type steel bars are arranged on the water-facing surface of the reinforced concrete support, and the second type steel bars are vertically and evenly arranged along the first type steel bars.

6. The connection structure between a concrete face rockfill dam and a large concrete structure according to claim 1, characterized in that: The first water-blocking structure comprises a construction joint and a copper waterstop between the construction joints. The construction joint is located between the reinforced concrete support and the large-volume concrete structure. The copper waterstop between the construction joints passes through the construction joint.

7. The connection structure between a concrete face rockfill dam and a large concrete structure according to claim 1, characterized in that: The concrete panel of the rockfill dam comprises a concrete panel embedded steel plate, and the concrete panel embedded steel plate is arranged at the bottom of the concrete panel of the rockfill dam.

8. The connection structure between a concrete face rockfill dam and a large concrete structure according to claim 1, characterized in that: The surface parts of the joints of the reinforced concrete support and the concrete panel of the rockfill dam are both designed with angle cutting to form the angle cutting edge lines of the support and the concrete panel, and the angle cutting edge lines of the support and the concrete panel form a "V"-shaped notch.

9. The connection structure between a concrete face rockfill dam and a large concrete structure according to claim 1, characterized in that: The second water-blocking structure includes a structural joint, a copper waterstop between the structural joints, and an asphalt wooden board. The structural joint is located between the concrete panel of the rockfill dam and the reinforced concrete support. The copper waterstop between the structural joints passes through the structural joint, and the structural joint is filled with an asphalt wooden board.

10. The connection structure between a concrete face rockfill dam and a large concrete structure according to claim 8, characterized in that: The surface water stop comprises a chloroprene rubber rod and an SR plastic filler, the chloroprene rubber rod and the SR plastic filler are arranged on the "V"-shaped notch from bottom to top, a protective cover sheet is arranged on the surface of the SR plastic filler, the protective cover sheet extends to the concrete panel of the rockfill dam and the surface of the reinforced concrete support, and PVC pressure strips and stainless steel angle steels are arranged above both ends of the protective cover sheet, a plurality of expansion bolts are arranged at intervals above the stainless steel angle steel along the longitudinal length direction of the support, and the ends of the protective cover sheet are respectively sealed with the concrete panel of the rockfill dam and the reinforced concrete support using an edge sealing agent.

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