A face structure of a face rockfill dam with self-pressurized water stop

Abstract

The present invention discloses a panel structure of a rockfill dam with a self-pressurizing water stop, which belongs to the technical field of water conservancy engineering, and includes a protective panel, a first water stop component and a second water stop component. The number of protective panels is multiple and they are used to cover the surface of the rockfill dam. A vertical seam is formed between two adjacent protective panels. A water diversion pipe is provided inside one of the protective panels. One end of the water diversion pipe passes through the front of the protective panel, and the other end of the water diversion pipe passes through one end of the protective panel in the horizontal direction and is connected to the vertical seam. The first water stop component is arranged at the top of the vertical seam and closes the vertical seam. The second water stop component is arranged inside the vertical seam and corresponds to the water diversion pipe. It has a good sealing effect at the vertical seam, and can better prevent water from leaking from the vertical seam. Moreover, the first water stop component and the second water stop component can adapt to the deformation of the vertical seam between the two panels, and prevent the protective panel from being squeezed and damaged at the vertical seam.

Description

Technical Field

[0001] The invention belongs to the technical field of water conservancy projects, and in particular relates to a face plate structure of a face plate rockfill dam with self-pressurizing water stop. Background Art

[0002] In recent years, my country has built a large number of 100m-class concrete face dams and several 200m-class concrete face dams. Representative projects include Shuibuya (dam height 233m), Sanbanxi (dam height 186m), Hongjiadu (dam height 179.5m), Tianshengqiao I (dam height 178m), etc. While the 200m-class high face rockfill dam has achieved success and gained valuable experience, some projects have encountered problems such as dam deformation being larger than expected, face plate extrusion damage, or large leakage. The face plate is the main body of the concrete face plate dam, and usually a longitudinal vertical joint is set without a horizontal expansion joint. Studies have found that the face plate has a contact rotation extrusion effect at the longitudinal joint, which will produce a stress concentration effect on the face plate surface near both sides of the joint, which is the main reason for the extrusion damage of the face plate and leakage. Panel joints connect adjacent panels, and the displacement deformation capacity of joint watertightness should adapt to the deformation between the joints, including settlement, shear and tension deformation. Therefore, in addition to controlling the deformation of the rockfill body, improving the compressive strength of the panel joints and the ability of the joint watertightness to adapt to deformation is the key to solving the leakage problem of high panel rockfill dams. Summary of the invention

[0003] The purpose of the embodiments of the present invention is to provide a face plate structure of a face plate rockfill dam with self-pressurizing water stop, which has a simple structure and is easy to use, and can better improve the above-mentioned problems.

[0004] The embodiment of the present invention is achieved as follows:

[0005] An embodiment of the present invention provides a panel structure of a rockfill dam with a self-pressurized waterstop, comprising a protective panel, a first waterstop assembly and a second waterstop assembly. The protective panels are in multiple pieces and are used to cover the surface of the rockfill dam. In the transverse direction of the rockfill dam, a vertical seam is formed between two adjacent protective panels. A water diversion pipe is provided inside one of the protective panels, one end of the water diversion pipe passes through the front side of the protective panel, and the other end of the water diversion pipe passes through one end of the protective panel in the horizontal direction and is connected to the vertical seam. The first waterstop assembly is arranged at the top of the vertical seam and closes the vertical seam, and the second waterstop assembly is arranged inside the vertical seam and corresponds to the water diversion pipe.

[0006] Optionally, the protective panel is provided with prefabricated steel components at both ends in the horizontal direction, the prefabricated steel components are L-shaped structures and cover the ends of the protective panel, the vertical seam is located between two of the prefabricated steel components, and the water pipe runs through the prefabricated steel components.

[0007] Optionally, the first waterstop assembly includes a first waterstop and a cover plate, the first waterstop is arranged on the top of the vertical seam and closes the vertical seam, and the cover plate is crimped to the upper side of the first waterstop.

[0008] Optionally, the middle portion of the first waterstop is inserted into the vertical seam to form a U-shaped groove structure, the two ends of the first waterstop are attached to the surfaces of the two prefabricated steel components, and a flexible filler is provided between the cover plate and the first waterstop.

[0009] Optionally, the flexible filler is a T-shaped structure, the vertical side of the flexible filler is clamped in the U-shaped groove of the first waterstop, and the horizontal side of the flexible filler presses the two ends of the first waterstop.

[0010] Optionally, the second waterstop assembly includes a second waterstop strip and a pressure plate, the second waterstop strip includes an arch portion and a flat strip portion, the flat strip portions are arranged on both sides of the arch portion in the width direction, the second waterstop strip is arranged in the vertical seam, and the flat strip portion of the second waterstop strip is crimped onto the end face of the protective panel with the water diversion pipe through the pressure plate, the concave side of the arch portion corresponds to the water diversion pipe, and the convex side of the arch portion abuts against the end face of another protective panel.

[0011] Optionally, a third water-stopping component is further included, and the third water-stopping component is arranged at the bottom of the vertical seam.

[0012] Optionally, the third waterstop assembly includes a third waterstop, a PVC rod, polyurethane foam and a pad, the middle portion of the third waterstop is inserted into the vertical seam to form an inverted U-shaped groove structure, the PVC rod is arranged at the inner top of the inverted U-shaped groove, the polyurethane foam is filled in the inverted U-shaped groove, the two ends of the third waterstop are fitted with the bottom surfaces of the two protective panels, and the pad is crimped to the bottom side of the third waterstop.

[0013] Optionally, two ends of the third waterstop are bent to form bent portions, and the bent portions are embedded in the protective panel.

[0014] Optionally, a cement mortar pad is provided on the bottom side of the pad.

[0015] The beneficial effects of the present invention are:

[0016] The panel rockfill dam panel structure with self-pressurizing water-stop provided in the embodiment of the present invention has good sealing effect at the vertical seams and multiple seals, which can better prevent water leakage from the vertical seams. Moreover, the first water-stop component and the second water-stop component can adapt to the deformation of the vertical seams between the two panels, which can not only seal the vertical seams, but also protect the ends of the protective panels, thereby preventing the protective panels from being squeezed and damaged at the vertical seams. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic structural diagram of a face plate structure of a face plate rockfill dam with self-pressurizing water stop provided in an embodiment of the present invention;

[0019] Figure 2 for Figure 1 AA section view;

[0020] Figure 3 for Figure 2 A partial enlarged view of point B in the middle;

[0021] Figure 4 for Figure 2 A partial enlarged view of point C in the middle;

[0022] Figure 5 is a schematic diagram of the structure of the second water stop;

[0023] Figure 6 for Figure 2 A partial enlarged view of point D in the middle;

[0024] In the figure: 11-protective panel; 111-vertical seam; 112-water pipe; 113-prefabricated steel member; 12-first waterstop assembly; 121-first waterstop strip; 122-cover plate; 123-flexible filler; 13-second waterstop assembly; 131-second waterstop strip; 132-pressing plate; 133-arched portion; 134-flat strip portion; 14-third waterstop assembly; 141-third waterstop strip; 142-PVC rod; 143-polyurethane foam; 144-pad; 145-bending portion; 15-cement mortar pad. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0026] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features of the embodiments may be combined with each other.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0028] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the invention product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0029] refer to Figure 1 and 2 As shown, an embodiment of the present invention provides a face plate structure of a face plate rockfill dam with self-pressurizing water-stop, comprising a protective panel 11 , a first water-stop assembly 12 and a second water-stop assembly 13 .

[0030] There are multiple protective panels 11 and they are used to cover the surface of the rockfill dam. In the transverse direction of the rockfill dam, a vertical seam 111 is formed between two adjacent protective panels 11. A water diversion pipe 112 is provided inside one of the protective panels 11. One end of the water diversion pipe 112 passes through the front of the protective panel 11, and the other end of the water diversion pipe 112 passes through one end of the protective panel 11 in the horizontal direction and is connected to the vertical seam 111. There are multiple water diversion pipes 112, and the multiple water diversion pipes 112 are spaced apart along the vertical direction of the protective panel 11.

[0031] Prefabricated steel components 113 are provided at both ends of the protective panel 11 in the horizontal direction. The prefabricated steel component 113 is an L-shaped structure. One side of the prefabricated steel component 113 covers the end of the protective panel 11, and the other side covers the upper surface of the protective panel 11. The vertical seam 111 is located between the two prefabricated steel components 113. The water pipe 112 passes through the prefabricated steel component 113, or the prefabricated steel component 113 has a water hole at a position corresponding to the end of the water pipe 112.

[0032] refer to Figure 3 The first water stop assembly 12 includes a first water stop strip 121 and a cover plate 122. The first water stop strip 121 is arranged at the top of the vertical seam 111. The middle part of the first water stop strip 121 is inserted into the vertical seam 111 to form a U-shaped groove structure. The two ends of the first water stop strip 121 are attached to the front surfaces of the two prefabricated steel components 113. The cover plate 122 is pressed on the upper side of the first water stop strip 121. A flexible filler 1 is provided between the cover plate 122 and the first water stop strip 121. 23. The flexible filler 123 is a T-shaped structure. The vertical side of the flexible filler 123 is stuck in the U-shaped groove of the first waterstop 121, and the horizontal side of the flexible filler 123 is crimped to the two end surfaces of the first waterstop 121. The two ends of the cover plate 122 are fixed to the prefabricated steel component 113 by bolts, so that the cover plate 122 presses the first waterstop 121 and the flexible filler 123, thereby closing the upper end of the vertical seam 111 to prevent water from flowing into the vertical seam 111.

[0033] refer to Figure 4 and 5 As shown, the second water stop assembly 13 includes a second water stop belt 131 and a pressure plate 132. The second water stop belt 131 includes an arch portion 133 and a flat strip portion 134. The flat strip portions 134 are arranged on both sides of the arch portion 133 in the width direction. The second water stop belt 131 is arranged in the vertical seam 111. The flat strip portions 134 on both sides of the second water stop belt 131 are pressed on the prefabricated steel component 113 with the water diversion pipe 112 through the pressure plate 132. The pressure plate 132 is locked on the prefabricated steel component 113 by bolts. The concave side of the arch portion 133 is connected to the water diversion pipe 11 Correspondingly, the convex side of the arched portion 133 abuts against another prefabricated steel component 113, so that when external water flows from the water diversion pipe 112 into the concave side of the arched portion 133 of the second waterstop 131, the arched portion 133 of the second waterstop 131 is pressed toward another prefabricated steel component 113, so that the convex surface of the arched portion 133 fits tightly with the end face of the prefabricated steel component 113, so that the second waterstop 131 can block the vertical seam 111, play a role of secondary sealing, and greatly improve the sealing performance at the vertical seam 111.

[0034] The face rockfill dam panel structure with self-pressurizing water-stopping provided by the present invention further includes a third water-stopping component 14 .

[0035] refer to Figure 6 As shown, the third waterstop assembly 14 includes a third waterstop 141, a PVC rod 142, a polyurethane foam 143 and a pad 144. The middle part of the third waterstop 141 is inserted into the vertical seam 111 to form an inverted U-shaped groove structure. The PVC rod 142 is arranged at the inner top of the inverted U-shaped groove. The polyurethane foam 143 is filled in the inverted U-shaped groove. The two ends of the third waterstop 141 are fitted with the bottom surfaces of the two protective panels 11. The two ends of the third waterstop 141 are bent to form a bending portion 145. The bending portion 145 is embedded in the protective panel 11. The pad 144 is crimped to the bottom side of the third waterstop 141. The setting of the pad 144 can prevent the third waterstop 141 from falling off. A cement mortar pad 15 is provided on the bottom side of the pad 144, and the cement mortar pad 15 serves to support other components. The third water-stopping component 14 can block the bottom of the vertical slit 111 , playing a triple sealing role, further ensuring the sealing of the vertical slit 111 and preventing water from leaking from the vertical slit 111 .

[0036] The installation process of the face plate structure of the face plate rockfill dam with self-pressurizing water stop provided by the present invention is as follows:

[0037] S1: pouring a cement mortar pad 15 on the dam body, and fixing the third water stop assembly 14 on the cement mortar pad 15;

[0038] S2: Fix a prefabricated steel member 113 on the dam body and corresponding to the third water stop assembly 14, and tie the steel bars inside the prefabricated steel member 113;

[0039] S3: Fix the water diversion pipe 112 at a preset position. The water diversion pipe 112 is an L-shaped structure. One end of the water diversion pipe 112 passes through the prefabricated steel component 113, and the other end of the water diversion pipe 112 extends toward the outside. Then fix the second water stop 131 on the prefabricated steel component 113. The groove side of the arched portion 133 of the second water stop 131 corresponds to the end of the water diversion pipe 112.

[0040] S4: fix another prefabricated steel member 113 on the dam body, and tie and fix the steel bars inside the prefabricated steel member 113, so that the two prefabricated steel members 113 surround a vertical seam 111, and the third water-stop assembly 14 blocks the lower end of the vertical seam 111, and the second water-stop assembly 13 blocks the middle of the vertical seam 111;

[0041] S5: Install the first water-stop assembly 12 at the upper end of the vertical slit 111 and seal the vertical slit 111;

[0042] S6: Concrete is poured to form the protective panel 11.

[0043] The present invention is not limited to the above-mentioned optional implementation modes. Anyone can derive other various forms of products under the inspiration of the present invention. However, no matter what changes are made in the shape or structure, all technical solutions that fall within the scope defined by the claims of the present invention fall within the protection scope of the present invention.

Claims

1. A face rockfill dam panel structure with self-pressurizing water stop, characterized by: It comprises a protective panel, a first water-stop assembly and a second water-stop assembly. The number of the protective panels is multiple and they are used to cover the surface of the rockfill dam. In the transverse direction of the rockfill dam, two adjacent protective panels form a vertical seam. A water diversion pipe is arranged inside one of the protective panels. One end of the water diversion pipe passes through the front of the protective panel, and the other end of the water diversion pipe passes through one end of the protective panel in the horizontal direction and is connected to the vertical seam. The first water-stop assembly is arranged at the top of the vertical seam and closes the vertical seam. The second water-stop assembly is arranged inside the vertical seam and corresponds to the water diversion pipe. The second water stop assembly includes a second water stop belt and a pressure plate, the second water stop belt includes an arched portion and a flat strip portion, the flat strip portions are arranged on both sides of the arched portion in the width direction, the second water stop belt is arranged in the vertical seam, the flat strip portion of the second water stop belt is pressed onto the end surface of the protection panel with the water diversion pipe through the pressure plate, the concave side of the arched portion corresponds to the water diversion pipe, and the convex side of the arched portion abuts against the end surface of another piece of the protection panel; It also includes a third water-stopping component, which is arranged at the bottom of the vertical seam.

2. The face plate structure of the face plate rockfill dam with self-pressurizing water stop according to claim 1 is characterized in that: The protective panel is provided with prefabricated steel components at both ends in the horizontal direction. The prefabricated steel components are L-shaped structures and cover the ends of the protective panel. The vertical seam is located between the two prefabricated steel components, and the water pipe runs through the prefabricated steel components.

3. The face rockfill dam panel structure with self-pressurizing water stop according to claim 2 is characterized in that: The first waterstop assembly includes a first waterstop and a cover plate. The first waterstop is arranged on the top of the vertical seam and closes the vertical seam. The cover plate is crimped to the upper side of the first waterstop.

4. The face plate structure of the face plate rockfill dam with self-pressurizing water stop according to claim 3 is characterized in that: The middle part of the first waterstop is inserted into the vertical seam to form a U-shaped groove structure, the two ends of the first waterstop are attached to the surfaces of the two prefabricated steel components, and a flexible filler is provided between the cover plate and the first waterstop.

5. The face plate structure of the face plate rockfill dam with self-pressurizing water stop according to claim 4 is characterized in that: The flexible filler is a T-shaped structure, the vertical side of the flexible filler is clamped in the U-shaped groove of the first waterstop, and the horizontal side of the flexible filler presses the two ends of the first waterstop.

6. The face plate structure of the face plate rockfill dam with self-pressurizing water stop according to claim 1, characterized in that: The third waterstop assembly includes a third waterstop, a PVC rod, polyurethane foam and a pad. The middle part of the third waterstop is inserted into the vertical seam to form an inverted U-shaped groove structure. The PVC rod is arranged at the inner top of the inverted U-shaped groove. The polyurethane foam is filled in the inverted U-shaped groove. The two ends of the third waterstop are fitted with the bottom surfaces of the two protective panels, and the pad is crimped to the bottom side of the third waterstop.

7. The face plate structure of the face plate rockfill dam with self-pressurizing water stop according to claim 6, characterized in that: Both ends of the third water stop are bent to form bent portions, and the bent portions are embedded in the protective panel.

8. The face plate structure of the face plate rockfill dam with self-pressurizing water stop according to claim 6, characterized in that: A cement mortar pad is provided on the bottom side of the pad.

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