CN217267297U

CN217267297U - Concrete arch dam structure

Info

Publication number: CN217267297U
Application number: CN202220682700.3U
Authority: CN
Inventors: 曾荣章; 温庆生; 陈绍平
Original assignee: Sichuan Water Conservancy And Electric Power Engineering Bureau Co ltd
Current assignee: Sichuan Shuifa Construction Co.,Ltd.
Priority date: 2022-03-26
Filing date: 2022-03-26
Publication date: 2022-08-23
Anticipated expiration: 2032-03-26

Abstract

The utility model belongs to the technical field of the arch dam and specifically relates to a concrete arch dam structure is related to, including the arch dam body, first drain pipe and grout drainage corridor, first drain pipe is pre-buried at this internal and bottom and grout drainage corridor intercommunication of arch dam, the bottom in grout drainage corridor is provided with the wash port curtain, the wash port curtain includes a plurality of second drain pipe, the second drain pipe sets up the bottom in grout drainage corridor along the length direction interval of encircleing the dam body, second drain pipe bottom and the drainage system connection in low reaches, first drain pipe is the porous concrete pipe, first drain pipe is provided with a plurality ofly along the length direction interval of the dam body. Water in the arch dam body enters the grouting drainage corridor through the first drain pipe and then is discharged to a downstream drainage system from the drain hole curtain, so that the water is effectively prevented from being accumulated in the grouting drainage corridor, and the waterproof effect of the arch dam is improved.

Description

Concrete arch dam structure

Technical Field

The application relates to the field of arch dams, in particular to a concrete arch dam structure.

Background

An arch dam is a water retaining dam built in a canyon and is made into a horizontal arch shape, a convex edge faces upstream, and two ends of the convex edge are tightly attached to the canyon wall. The water retaining building is a space shell structure which is bent upstream on a plane, is in a curve shape and can transmit a part of horizontal load to two banks.

Because the arch dam always contacts with water, an anti-seepage structure is generally installed in the arch dam, at present, a drainage observation gallery and a drainage pipe are generally adopted in a waterproof structure of the arch dam, the drainage pipe is vertically installed at the top of a dam body, and the bottom of the drainage pipe is communicated with the drainage observation gallery. However, the drainage observation corridor is provided with a cable and the like on the ground, if the cable is in contact with water, short circuit is easy to occur, potential safety hazards exist, and the waterproof effect of the arch dam is poor.

SUMMERY OF THE UTILITY MODEL

In order to improve the water-proof effects of arch dam, this application provides a concrete arch dam structure.

The application provides a concrete arch dam structure adopts following technical scheme:

the utility model provides a concrete arch dam structure, is including encircleing dam body, first drain pipe and grout drainage corridor, first drain pipe is pre-buried at encircleing dam body and bottom and grout drainage corridor intercommunication, the bottom in grout drainage corridor is provided with the drain hole curtain, the drain hole curtain includes a plurality of second drain pipe, the second drain pipe sets up the bottom in grout drainage corridor along the length direction interval of encircleing the dam body, second drain pipe bottom is connected with the drainage system in low reaches, first drain pipe is porous concrete pipe, first drain pipe is provided with a plurality ofly along the length direction interval of dam body.

Through adopting above-mentioned technical scheme, this internal water of arch dam enters into grout drainage corridor through first drain pipe in, then discharges the drainage system in low reaches from the drain hole curtain, effectively avoids water to pile up in grout drainage corridor, improves arch dam's water-proof effects.

Optionally, the escape canal has been seted up along the length direction in grout drainage corridor at the both ends of the diapire in grout drainage corridor, be provided with the collector pipe on the lateral wall in grout drainage corridor, the one end and the first drain pipe intercommunication of collector pipe, the other end are located the escape canal directly over, and the through-hole has been seted up along the horizontal direction on the lateral wall that two escape canals are close to each other.

Through adopting above-mentioned technical scheme, the absorbing water of first drain pipe is discharged into in the collector pipe, then in draining into the escape canal through the collector pipe, and the water that constitutes when the drainage of one side is too much, can flow into the escape canal department of opposite side through the through-hole, improves drainage effect.

Optionally, a bending part is arranged on the water collecting pipe, and the bending part is arranged in a spiral manner.

Through adopting above-mentioned technical scheme, the kink is to entering into the collector pipe and remove to the escape canal and cushion.

Optionally, a water collecting pit is formed in the bottom wall of the grouting drainage corridor, the water collecting pit is communicated with drainage ditches on two sides of the grouting drainage corridor, and the drainage hole curtain is communicated with the bottom of the water collecting pit.

Through adopting above-mentioned technical scheme, in the water in the escape canal unified entering into the sump, the wash port curtain only need discharge to the water in the sump to, the water that enters into in the sump deposits in the sump, separates silt and water, effectively avoids blockking up the wash port curtain.

Optionally, a plurality of cable brackets are arranged on the side wall of the grouting drainage corridor along the length direction of the irrigation drainage corridor, and the cable brackets are used for fixing cables.

Through adopting above-mentioned technical scheme, the staff installs the cable conductor on cable support, realizes cable conductor and escape canal separation, has effectively avoided cable conductor and water contact, improves the security.

Optionally, the face that faces the water of arch dam body is provided with the prevention of seepage panel, the prevention of seepage panel is crooked to the direction of keeping away from the lateral wall of arch dam body.

By adopting the technical scheme, the anti-seepage panel reduces the wetting line, increases the stability of the downstream dam slope, reduces the seepage slope, and prevents the seepage deformation of the arch dam body.

Optionally, the bottom of the arch dam body is provided with double rows of curtain grouting layers at intervals along the width direction of the arch dam body.

Through adopting above-mentioned technical scheme, double curtain grout blanket reduces the seepage flow and reduces osmotic pressure, improves the water-proof effects of arch dam body.

Optionally, the bottom of the arch dam body is provided with a consolidation grouting layer at intervals along the width direction of the arch dam body.

By adopting the technical scheme, the consolidation grouting layer improves the stability of the double-row curtain grouting layer, and the condition that the double-row curtain grouting layer is cracked is effectively avoided.

In summary, the present application includes at least one of the following beneficial technical effects:

water in the arch dam body enters the grouting drainage corridor through the first drainage pipe and then is discharged into a downstream drainage system from the drainage hole curtain, so that the water is effectively prevented from being accumulated in the grouting drainage corridor, and the waterproof effect of the arch dam is improved;

the water absorbed by the first drainage pipe is drained into the water collecting pipe and then drained into the drainage ditch through the water collecting pipe, and when the water in the drainage structure on one side is too much, the water can flow into the drainage ditch on the other side through the through holes, so that the drainage effect is improved;

in the water in the escape canal unified entering sump, the wash port curtain only need discharge to the water in the sump to, the water that enters into the sump deposits in the sump, separates silt and water, effectively avoids blockking up the wash port curtain.

Drawings

Fig. 1 is a partial sectional view of a concrete arch dam structure according to an embodiment of the present application.

Fig. 2 is a partial cutaway view of a grout drainage corridor according to an embodiment of the present application.

Fig. 3 is a partial cross-sectional view of a sump of an embodiment of the present application.

Description of reference numerals: 1. an arch dam body; 2. a first drain pipe; 3. grouting a drainage corridor; 31. a drainage ditch; 32. a through hole; 4. a drain hole curtain; 41. a second drain pipe; 5. a water collection pipe; 51. a bending section; 6. a sump; 7. a cable holder; 8. an impervious panel; 9. double-row curtain grouting layers; 10. and (5) solidifying the grouting layer.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses concrete arch dam structure. Referring to fig. 1 and 2, the concrete arch dam structure comprises an arch dam body 1, a first drainage pipe 2 and a grouting drainage corridor 3, wherein the first drainage pipe 2 is pre-buried in the arch dam body 1, the bottom of the first drainage pipe is communicated with the grouting drainage corridor 3, a drainage hole curtain 4 is installed at the bottom of the grouting drainage corridor 3, the drainage hole curtain 4 is connected with a downstream drainage system, and water entering the grouting drainage corridor 3 is discharged into the downstream drainage system from the drainage hole curtain 4.

Referring to fig. 1 and 2, a plurality of first drainpipes 2 are installed at intervals along the length direction of the arch dam body 1, the first drainpipes 2 are embedded in the arch dam body 1 along the vertical direction, and the first drainpipes 2 are located above the normal water storage level of the arch dam. The first drainage pipe 2 adopts porous concrete pipe, and porous concrete pipe has pervious function, and the water that the infiltration entered into in the arch dam body 1 is collected in the first drainage pipe 2 by first drainage pipe 2 in the in-process that removes in the arch dam body 1 to enter into grout drainage corridor 3 along first drainage pipe 2.

Referring to fig. 1 and 2, the grouting drainage corridor 3 is provided in the arch dam body 1 along the length direction of the arch dam body 1, and the grouting drainage corridor 3 is located below the in-situ drawing line of the arch dam body 1. The both ends of grout drainage corridor 3's diapire have seted up escape canal 31 along grout drainage corridor 3's length direction, are provided with collector pipe 5 on grout drainage corridor 3's the lateral wall, and collector pipe 5's one end and first drain pipe 2 intercommunication, the other end are located escape canal 31 directly over, and through-hole 32 has been seted up along the horizontal direction on the lateral wall that two escape canals 31 are close to each other. When the water in the drainage structure on one side is too much, the water can flow into the drainage ditch 31 on the other side through the through holes 32, and the drainage effect of the drainage ditch 31 is improved.

Referring to fig. 2, the water collecting pipe 5 is a PVC pipe, the water collecting pipe 5 is provided with a bending portion 51, the bending portion 51 is arranged in a spiral manner, and water in the water collecting pipe 5 descends spirally along the bending portion 51 when passing through the bending portion 51, so that the water entering the water collecting pipe 5 is buffered in the process of moving to the drainage ditch 31, and the water in the water collecting pipe 5 is effectively prevented from directly falling into the drainage ditch 31 to generate a large impact force on the drainage ditch 31.

Referring to fig. 2 and 3, a water collection pit 6 is formed in the bottom wall of the grouting drainage corridor 3, the water collection pit 6 is communicated with drainage ditches 31 on two sides of the grouting drainage corridor 3, a drainage hole is formed in the bottom of the water collection pit 6, and a plurality of second drainage pipes 41 of the drainage hole curtain 4 are arranged at the bottom of the water collection pit 6 in an array and communicated with the drainage hole. In the water in the escape canal 31 unified entering sump 6, wash port curtain 4 only need discharge to the water in sump 6 to, the water that enters into in sump 6 deposits in sump 6, makes silt deposit the bottom of sump 6, and the staff regularly clears up the silt in sump 6, effectively avoids blockking up wash port curtain 4.

The drain hole curtain 4 comprises a plurality of second drain pipes 41, the second drain pipes 41 are concrete pipes, the upper and lower openings of the concrete pipes are hollow, the second drain pipes 41 are installed at the bottom of the sump 6 along the horizontal direction in a downward inclined manner and connected with a downstream drainage system, and one section of the second drain pipes 41 extends out of the bottom of the sump 6.

The water absorbed by the first drainage pipe 2 falls into the water collecting pipe 5, then falls into the drainage ditch 31 through the water collecting pipe 5, then falls into the water collecting pit 6, and then moves into a downstream drainage system from the second drainage pipe 41 installed at the bottom of the water collecting pit 6, so that the accumulation of water in the grouting drainage corridor 3 is effectively avoided, and the waterproof effect of the arch dam is improved.

Referring to fig. 2, a plurality of cable brackets 7 are mounted on the side wall of the grouting drainage corridor 3 along the length direction of the grouting drainage corridor, the cable brackets 7 are used for fixing cables, and the cable brackets 7 are made of alloy materials. The staff installs the cable conductor on cable support 7, realizes the separation of cable conductor and escape canal 31, has effectively avoided cable conductor and water contact, improves the security.

Referring to fig. 1, an anti-seepage panel 8 is installed on the front surface of the arch dam body 1, the anti-seepage panel 8 is formed by pouring C20 reinforced concrete, and the anti-seepage panel 8 is bent towards the direction far away from the side wall of the arch dam body 1. The anti-seepage panel 8 reduces the wetting line of the arch dam body 1, increases the stability of a downstream dam slope, reduces the seepage slope, effectively reduces the seepage of the water on the front surface of the arch dam body 1 into the arch dam body 1, and effectively prevents the seepage deformation of the arch dam body 1.

Referring to fig. 1, double rows of curtain grouting layers 9 are installed at intervals at the bottom of an arch dam body 1 along the width direction of the arch dam body 1, the curtain grouting layers are formed by grouting slurry in cracks of a rock body or a soil layer at the bottom of the arch dam body 1, the top of the double rows of curtain grouting layers 9 and the bottom of the arch dam body 1 are integrally formed, and the double rows of curtain grouting layers 9 reduce permeation of underground water in the rock body or the soil layer at the bottom of the arch dam body 1 to the arch dam body 1, so that the waterproof effect of the arch dam body 1 is improved. The double-row curtain grouting layer 9 and the grouting drainage corridor 3 are cooperatively used, so that the uplift pressure of the seepage water in the arch dam body 1 on the arch dam body 1 is reduced.

Referring to fig. 1, the bottom of the arch dam body 1 is poured with a consolidated grouting layer 10 at intervals along the width direction of the arch dam body 1. The consolidation grouting layer 10 is pressed into the rock mass or soil layer at the bottom of the arch dam body 1 by adopting high-grade cement mortar or chemical mortar, so that cracks of the rock mass or soil layer at the bottom of the arch dam body 1 are sealed, the strength and rigidity of the bottom of the arch dam body 1 are enhanced, and the stability of the arch dam body 1 is improved.

Double curtain grouting layer 9 and consolidation grouting layer 10 pour in proper order at the bottom of arch dam body 1 at the interval, and consolidation grouting layer 10 improves the stability of double curtain grouting layer 9, effectively avoids double curtain grouting layer 9 the condition that the pull cracks appears.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A concrete arch dam structure which is characterized in that: including arched dam body (1), first drain pipe (2) and grout drainage corridor (3), first drain pipe (2) are pre-buried in arched dam body (1) and bottom and grout drainage corridor (3) intercommunication, the bottom in grout drainage corridor (3) is provided with wash port curtain (4), wash port curtain (4) include a plurality of second drain pipe (41), length direction interval setting in grout drainage corridor (3) along arched dam body (1) in second drain pipe (41), second drain pipe (41) bottom and the drainage system in low reaches are connected, first drain pipe (2) are porous concrete pipe, first drain pipe (2) are provided with a plurality ofly along the length direction interval of dam body.

2. A concrete arch dam structure according to claim 1, wherein: drainage ditch (31) have been seted up along the length direction in grout drainage corridor (3) at the both ends of the diapire of grout drainage corridor (3), be provided with collector pipe (5) on the lateral wall in grout drainage corridor (3), the one end and first drain pipe (2) intercommunication, the other end of collector pipe (5) are located drainage ditch (31) directly over, have seted up through-hole (32) along the horizontal direction on the lateral wall that two drainage ditch (31) are close to each other.

3. A concrete arch dam structure according to claim 2, wherein: the water collecting pipe (5) is provided with a bending part (51), and the bending part (51) is spirally arranged.

4. A concrete arch dam structure according to claim 2, wherein: the water collecting pit (6) is formed in the bottom wall of the grouting drainage corridor (3), the water collecting pit (6) is communicated with drainage ditches (31) on two sides of the grouting drainage corridor (3), and the drainage hole curtain (4) is communicated with the bottom of the water collecting pit (6).

5. A concrete arch dam structure according to claim 2, wherein: and a plurality of cable supports (7) are arranged on the side wall of the grouting drainage corridor (3) along the length direction of the grouting drainage corridor, and the cable supports (7) are used for fixing cables.

6. A concrete arch dam structure according to claim 1, wherein: the face that faces the water of arch dam body (1) is provided with prevention of seepage panel (8), prevention of seepage panel (8) are crooked to the direction of keeping away from the lateral wall of arch dam body (1).

7. A concrete arch dam structure according to claim 1, wherein: the bottom of the arch dam body (1) is provided with double rows of curtain grouting layers (9) at intervals along the width direction of the arch dam body (1).

8. A concrete arch dam structure according to claim 7, wherein: the bottom of the arch dam body (1) is provided with consolidation grouting layers (10) at intervals along the width direction of the arch dam body (1).