CN217053251U - Flood drainage building structure for excavation channel - Google Patents

Abstract

The utility model discloses a flood discharge building structure for excavation channel, include: drainage aqueduct groove body, drainage aqueduct groove body frame is in digging the side channel top, drainage aqueduct groove body is connected with drainage aqueduct water inlet in the department of going upstream, drainage aqueduct groove body is connected with drop well in the department of going downstream, drop well and drainage piping connection, the drainage pipeline is located canal roof access road below. The utility model discloses a set up drop well in flood discharge aqueduct groove body low reaches department, reduce flood water level elevation, reduce flood discharge building elevation, avoid the interference of flood discharge building to the canal roof maintenance road.

Description

Flood drainage building structure for excavation channel

Technical Field

The utility model belongs to the technical field of hydraulic engineering, concretely relates to flood discharge building structure for digging channel.

Background

The channel is used as a very common hydraulic structure and is widely applied to diversion engineering. In areas such as Gansu province in Xinjiang in China, engineering areas are often located in Gobi deserts with large longitudinal slopes, and flood season flood has the characteristics of large flood volume, high flow rate, short duration and the like. In the channel construction process, if a safe and reliable flood discharge channel is not reserved for flood, great damage can be caused to engineering. Channel engineering is because topography condition and channel line spare restriction in the design process, often can appear digging the channel, to the flood discharge measure of digging the channel, generally use the mode that the row that blocks combined together, build flood bank promptly in the flood channel side for interception flood, build the flood discharge building at natural flood discharge passageway and channel cross department simultaneously, arrange the flood of interception downstream natural flood discharge passageway to guarantee the safety of channel building. The flood drainage structures commonly used for excavation channels are flood drainage aqueducts, but the top elevation of the flood drainage aqueducts is often higher than that of the channel tops, so that after the flood drainage aqueducts are built, a channel top maintenance road is broken, inconvenience is brought to channel maintenance and traffic, and the selection of a flood drainage structure which can drain floodwater and does not influence the channel maintenance and the traffic is of great importance to the normal operation of the whole project.

Disclosure of Invention

The utility model provides a flood drainage building structure for excavation channel, after the flood drainage aqueduct is built on aim at solves the excavation channel, the channel top is overhauld the road and is broken, influences channel maintenance and traffic scheduling problem, guarantees the normal operating of channel engineering.

In order to achieve the above purpose, the utility model adopts the technical scheme that:

a flood drainage building structure for excavation channels, comprising: drainage aqueduct groove body, drainage aqueduct groove body frame is in digging side channel top, drainage aqueduct groove body is connected with drainage aqueduct water inlet in upstream department, drainage aqueduct groove body is connected with drop well in downstream department, drop well and drainage pipe connection, drainage pipe is located the channel top access road below.

Furthermore, the flood discharge aqueduct body is provided with an upstream side pier and a downstream side pier which support the aqueduct body.

Furthermore, the upstream side pier adopts a gravity type retaining wall structure.

Further, the low reaches side mound adopts gravity type retaining wall and vertical wall's structure, the low reaches side mound to the drainage aqueduct groove body left and right sides extend to with the drop well is with wide, the low reaches side mound is in drainage aqueduct groove body both sides upwards extend to with the structure of straight wall with the groove top height of drainage aqueduct groove body is the same, the low reaches side mound constitutes a side wall of drop well.

Further, a sealing layer is arranged in a gap between the downstream side pier and the flood discharge aqueduct body.

Furthermore, at least two supporting points are arranged between the upstream side pier and the downstream side pier and the flood drainage flume body, and rubber supports are arranged at the supporting points.

Further, the drop well comprises a side wall and a bottom plate, wherein the side wall is connected with a side wall formed by the downstream side pier.

Furthermore, a rubber water stop is arranged at the joint of the drop well and the downstream side pier.

Furthermore, a waterproof casing is arranged at the joint of the water drop well and the flood discharge pipeline.

Furthermore, the water inlet of the flood discharge aqueduct comprises a side wall and a bottom plate, the height of the side wall is consistent with that of the body of the flood discharge aqueduct, and an impervious wall is arranged below the bottom plate.

Further, the flood discharge pipeline is connected with a flood discharge pipeline water outlet, the flood discharge pipeline water outlet comprises a side wall and a bottom plate, the height of the side wall is consistent with the height of the flood discharge pipeline, and a tooth wall is arranged below the bottom plate.

Furthermore, the downstream of the water outlet of the flood discharge pipeline is provided with a gabion, and the width of the gabion is consistent with that of the downstream of the water outlet of the flood discharge pipeline.

The beneficial effects of the utility model reside in that: the drop well is arranged at the downstream of the flood drainage aqueduct body, so that the water level elevation of flood is reduced, the elevation of a flood drainage building is reduced, and the interference of the flood drainage building on the channel top maintenance road is avoided.

Drawings

Fig. 1 is a schematic plan view of a flood discharge building structure.

Fig. 2 is a schematic longitudinal section of a flood discharging building structure.

FIG. 3 is a schematic cross-sectional view taken along line A-A in FIG. 1.

In the figure: 1. a flood discharge aqueduct body; 2. an upstream side pier; 3. a downstream side pier; 4. a drop well; 5. a flood discharge pipeline; 6. a waterproof sleeve; 7. a rubber waterstop; 8. a rubber support; 9. a flexible sealing material; 10. a water inlet of the flood discharge aqueduct; 11. a water outlet of the flood drainage pipeline; 12. gabion gabions; 13. an original ground line; 14. excavating a line; 15. digging a square channel; 16. repairing the road at the top of the canal; 17. a cut-off wall; 18. tooth wall.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

As shown in fig. 1 to 3, the present invention provides a flood discharge building structure for an excavation channel, including:

the flood discharge aqueduct body 1 is erected above the excavation channel 15 and is used for connecting natural flood discharge channels on two sides of the channel to ensure the safety of the channel. In order to avoid blocking of the aqueduct to the water flow of the channel, the distance from the lower surface of the aqueduct to the highest water surface of the channel is not less than 50 cm. In order to ensure the flood discharge capacity of the aqueduct and prevent the tank body from silting, on the premise of not influencing the quality safety of the aqueduct, the aqueduct should adopt a larger longitudinal slope as much as possible along the direction of flood flow (the direction of an arrow in figure 1), and the slope can be 1/200-1/50. The aqueduct body adopts a cast-in-place or prefabricated reinforced concrete structure, and the concrete label is C25-C35 according to specific weather and other conditions. The thicknesses of the bottom plate and the side wall of the aqueduct meet the requirement of structural safety, and can be generally 20 cm-30 cm. The size of the tank body is determined according to the requirements of water passing capacity and super high.

The upstream side pier 2 is mainly used for supporting the aqueduct body and ensuring the stability and the safety of the aqueduct body. The upstream side pier is arranged at the upstream of the flood discharge aqueduct and should be arranged close to the channel as much as possible on the premise of not influencing the water passing of the channel. The upstream side pier can adopt a reinforced concrete structure, a plain concrete structure or a masonry structure, and the form adopts a gravity type retaining wall structure.

And the downstream side pier 3 is mainly used for supporting the aqueduct body and serving as a side wall of the drop well 4. The downstream side pier is arranged at the downstream of the flood discharge aqueduct and can adopt a reinforced concrete structure, the structural form of a gravity retaining wall and a vertical wall is adopted for arrangement, and the vertical surface of the downstream side pier is arranged at the downstream side of flood. The downstream side piers extend to the left side and the right side of the groove body to be as wide as the drop well, extend upwards to the height of the groove top of the groove body in the structural form of straight walls on the two sides of the groove body, and form a side wall of the drop well. And a sealing layer is arranged in a gap between the downstream side pier and the groove body, and is sealed by a flexible sealing material 9 such as polyurethane.

The top widths of the upstream side pier and the downstream side pier can be 40 cm-50 cm, the top widths can be actually adjusted according to the width of the aqueduct, at least two supporting points are arranged on the upstream side pier, the downstream side pier and the aqueduct body, the supporting points are provided with rubber supports 8, and the sizes of the rubber supports can be determined according to relevant specifications.

Drop well 4, the main effect is for reducing flood surface of water elevation, guarantees that the flood drainage pipeline 5 who is connected with drop well can pass from the canal top access road 16 and carry out the flood drainage, avoids the flood drainage building influence to overhaul road traffic and channel and overhauls. The drop well is arranged at the downstream of the flood discharge aqueduct and comprises a side wall and a bottom plate, and the side wall is connected with a side wall formed by a downstream side pier. The drop well is of a reinforced concrete structure, the thickness of the bottom plate is not less than 50cm, and the thickness of the side wall is determined by calculation according to the height of the wall and is generally not less than 30 cm. And a rubber water stop 7 is arranged at the joint of the drop well and the downstream side pier.

The flood discharge pipeline 5 is positioned below the canal top access road 16 and mainly used for discharging flood from the drop well to the natural flood discharge channel. The inlet of the flood discharge pipeline is connected with the side wall of the drop well, the joint is provided with a waterproof sleeve 6, and the outlet is connected with the water outlet of the flood discharge pipeline. The flood drainage pipeline can adopt cast-in-place reinforced concrete pipes, prefabricated reinforced concrete pipes, PCCP pipes and the like. The size of the flood discharge pipeline is determined according to the calculation of water passing capacity and the requirement of clearance on the water surface, and the clearance area above the water surface is usually designed to be not less than 10 percent of the section area of the culvert, and the clearance height is not less than one fourth of the diameter of the pipeline. The thickness of soil between the top surface of the flood drainage pipeline and the channel maintenance road is not less than 50 cm.

The flood discharge aqueduct water inlet 10 is arranged at the upstream of the flood discharge aqueduct and mainly used for connecting the aqueduct and a flood bank in a sequential way and smoothly leading flood into the flood discharge aqueduct, generally adopts forms of a splayed water inlet, a twisted-surface water inlet and the like, and has a plane diffusion angle of 6-12 degrees and a length of 5-10 m. The water inlet comprises a side wall and a bottom plate, the height of the side wall is consistent with that of the aqueduct, an impervious wall 17 which is not less than 50cm is arranged below the bottom plate at the inlet of the water inlet, and the bottom plate and the side wall can be made of masonry, plain concrete, reinforced concrete and the like.

The flood discharge pipeline water outlet 11 mainly serves to support soil at a pipe opening and prevent the soil at the pipe opening from collapsing, and flood in the flood discharge pipeline is smoothly led out at the same time, generally in the form of a splayed water outlet and the like, the planar diffusion angle of the flood discharge pipeline is 6-12 degrees, and the length of the flood discharge pipeline is generally 3-10 m. The water outlet comprises a side wall and a bottom plate, the height of the side wall is consistent with the height of the flood discharge pipeline, a tooth wall 18 not smaller than 50cm is arranged below the bottom plate at the position of the water outlet, and the materials of the bottom plate and the side wall can be masonry, plain concrete, reinforced concrete and the like.

The gabion 12 is arranged at the downstream of a water outlet of a flood discharge pipeline, and is mainly used for preventing flood from flowing out of the water outlet of the flood discharge pipeline and then scouring and damaging the ground, the width of the gabion is consistent with the width of the downstream of the water outlet of the flood discharge pipeline, the thickness of the gabion is 1m, and the length of the gabion is 3-10 m.

In fig. 2, 13 is an original ground line, and 14 is an excavation line.

Claims (12)

1. A flood drainage building structure for an excavation channel, comprising: drainage aqueduct groove body, drainage aqueduct groove body frame is in digging the side channel top, drainage aqueduct groove body is connected with drainage aqueduct water inlet in the department of going upstream, drainage aqueduct groove body is connected with drop well in the department of going downstream, drop well and drainage piping connection, the drainage pipeline is located canal roof access road below.

2. The flood discharge building structure according to claim 1, wherein the flood discharge aqueduct trunk is provided with an upstream side pier and a downstream side pier supporting the aqueduct trunk.

3. A flood drainage building structure according to claim 2, wherein the upstream edge pier is a gravity retaining wall structure.

4. The flood discharge building structure according to claim 2, wherein the downstream side pier is a structure of a gravity retaining wall and a vertical wall, the downstream side pier extends to the left side and the right side of the flood discharge aqueduct body to be as wide as the drop well, the downstream side pier extends upwards to the same height as the top of the flood discharge aqueduct body at the two sides of the flood discharge aqueduct body through the structure of the vertical wall, and the downstream side pier forms one side wall of the drop well.

5. The flood discharge building structure according to claim 4, wherein a gap between the downstream side pier and the flood discharge flume body is provided with a sealing layer.

6. The flood drainage building structure according to claim 2, wherein no less than two support points are provided between the upstream and downstream side piers and the flood drainage flume body, and rubber mounts are provided at the support points.

7. The flood drainage building structure according to claim 2, wherein the drop well comprises a side wall and a bottom plate, and the side wall is connected with a side wall formed by the downstream side pier.

8. The flood discharge building structure according to claim 7, wherein a rubber water stop is provided at the junction of the drop well and the downstream side pier.

9. The flood drainage building structure according to claim 8, wherein a waterproof casing is provided at a junction of the drop well and the flood drainage pipe.

10. The flood drainage building structure according to claim 1, wherein the flood drainage aqueduct water inlet comprises a side wall and a bottom plate, the height of the side wall is consistent with the height of the flood drainage aqueduct body, and a seepage-proof wall is arranged below the bottom plate.

11. The flood discharge building structure according to claim 1, wherein the flood discharge pipe is connected with a flood discharge pipe water outlet, the flood discharge pipe water outlet comprises a side wall and a bottom plate, the height of the side wall is consistent with that of the flood discharge pipe, and a tooth wall is arranged below the bottom plate.

12. The flood drainage building structure according to claim 11, wherein gabions are arranged downstream of the water outlet of the flood drainage pipeline, and the width of the gabions is consistent with that of the downstream of the water outlet of the flood drainage pipeline.

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