CN219315650U

CN219315650U - Scour prevention flood discharge channel

Info

Publication number: CN219315650U
Application number: CN202320826747.7U
Authority: CN
Inventors: 陈建国; 邢爱芳; 苏都都; 冉统军; 姚震; 墨宏磊; 眭红艳
Original assignee: Gansu Water Conservancy And Hydropower Survey Design And Research Institute Co ltd
Current assignee: Gansu Water Conservancy And Hydropower Survey Design And Research Institute Co ltd
Priority date: 2023-04-14
Filing date: 2023-04-14
Publication date: 2023-07-07
Anticipated expiration: 2033-04-14

Abstract

The utility model discloses an anti-scouring flood discharge channel, which comprises a channel, wherein a seepage interception device is arranged at the front end inlet of the channel, the top end of the seepage interception device is positioned above a channel ground line, the bottom end of the seepage interception device is inserted below the channel ground line, and the seepage interception device comprises a channel bottom section and a slope section; and paving a reinforcement cage on the inner surface of a channel at the downstream side of the top end of the infiltration intercepting device, filling stone blocks in the reinforcement cage, backfilling soil layers on the upper surface of the reinforcement cage, and planting plants to form an ecological restoration layer. The utility model can reduce the scouring of flood to the soil of the trench, is beneficial to repairing and maintaining the ecological system in the trench, and reduces the sediment accumulation degree at the downstream.

Description

Scour prevention flood discharge channel

Technical Field

The utility model belongs to the technical field of hydraulic engineering, and particularly relates to an anti-scouring flood discharge channel.

Background

The loess area has loose soil quality and serious water and soil loss. In the process that flood leaks to the river course through the channel, cause the channel to wash seriously, influence the ecological environment in channel both sides, in addition, flood carries a large amount of silt and also can cause the siltation problem of low reaches river course.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a square flushing flood discharge channel, which can reduce flushing of flood to soil in the channel, is beneficial to repairing and maintaining an ecological system in the channel and reduces the sediment accumulation degree at the downstream.

In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows: the anti-scour flood discharge channel comprises a channel, wherein an inlet at the front end of the channel is provided with a seepage interception device, the top end of the seepage interception device is positioned above a channel ground line, the bottom end of the seepage interception device is inserted below the channel ground line, and the seepage interception device comprises a channel bottom section and a side slope section; and paving a reinforcement cage on the inner surface of a channel at the downstream side of the top end of the infiltration intercepting device, filling stone blocks in the reinforcement cage, backfilling soil layers on the upper surface of the reinforcement cage, and planting plants to form an ecological restoration layer.

As a preferable technical scheme of the utility model, the top end of the intercepting and penetrating device is flush with the upper surface of the reinforcement cage, and the water facing side of the intercepting and penetrating device is an arc-shaped surface.

As a preferable technical scheme of the utility model, the thickness of the reinforcement cage at the bottom of the ditch is larger than that of the side slope, and the thickness of the reinforcement cage of the side slope is gradually thinned from bottom to top; the grid holes of the reinforcement cage are square or regular hexagon.

As a preferable technical scheme of the utility model, the ditch bottom section of the infiltration intercepting device is an infiltration intercepting wall, and the gradient of the infiltration intercepting wall is 1:1.

As a preferable technical scheme of the utility model, the side slope section is a secondary cut-off wall, and the depth of the secondary cut-off wall inserted below the side slope surface line is smaller than the depth of the cut-off wall inserted below the ditch bottom surface line.

As a preferable technical scheme of the utility model, the side slope section is a hardened road.

As a preferable technical scheme of the utility model, geotechnical cloth is paved at the bottom of the reinforcement cage, and anchor rods penetrating into soil of a trench below the geotechnical cloth are uniformly distributed on the lower surface of the reinforcement cage.

The beneficial effects of adopting above-mentioned technical scheme to produce lie in: according to the utility model, soil on the trench ground is leveled and gathered by geotechnical cloth, and the reinforcement cage is matched with filled stones to compress the geotechnical cloth, so that the scouring action of flood on the trench ground soil is reduced, the ecological system in the trench is restored and maintained, and the sediment accumulation degree at the downstream is reduced.

Drawings

The utility model will be described in further detail with reference to the drawings and the detailed description.

Fig. 1 is a schematic cross-sectional view of the present utility model.

FIG. 2 is a schematic longitudinal section of the present utility model.

In the figure: 1. channel 2, steel reinforcement cage 3, block stone 4, geotechnical cloth 5, ecological restoration layer 6, stock 7, ditch bottom section 8, side slope section.

Detailed Description

The structure of one specific embodiment of the utility model comprises a channel 1, wherein a front end inlet of the channel 1 is provided with a permeation interception device, the top end of the permeation interception device is positioned above the ground line of the channel 1, the bottom end of the permeation interception device is inserted below the ground line of the channel 1, and the permeation interception device comprises a channel bottom section 7 and a side slope section 8; the reinforcement cage 2 is paved on the inner surface of the channel 1 at the downstream side of the top end of the infiltration intercepting device, the stone 3 is filled in the reinforcement cage 2, the upper surface of the reinforcement cage 2 is backfilled with a soil layer, and plants are planted to form the ecological restoration layer 5.

The top end of the intercepting and penetrating device is flush with the upper surface of the reinforcement cage 2, and the water facing side of the intercepting and penetrating device is an arc-shaped surface. The infiltration intercepting device can reduce infiltration of flood water into deep soil of the channel 1 and maintain stability of the soil. The water facing side of the arc surface can reduce the impact force of flood on the seepage interception device.

The thickness of the reinforcement cage 2 of the ditch bottom 11 is larger than that of the reinforcement cage 2 of the side slope, and the thickness of the reinforcement cage 2 of the side slope 12 is gradually thinned from bottom to top; the grid holes of the reinforcement cage 2 are square or regular hexagon. The lower the water pressure in the channel 1 is, the higher the flushing strength is, and the steel reinforcement cage 2 with the height of Cheng Yue is properly thinned in combination with the construction requirement of reducing the material cost as much as possible.

The ditch bottom section 7 of the seepage interception device is an interception wall, and the gradient of the interception wall is 1:1. As shown in fig. 2, the bottom of the cut-off wall is inclined in the downstream direction, so that the impact resistance is enhanced and the stability is improved.

The side slope section 8 is a secondary cut-off wall, and the depth of the secondary cut-off wall inserted into the side slope below the surface line of 12 is smaller than the depth of the cut-off wall inserted into the groove bottom below the surface line of 11. The side slope section 8 has small water pressure and small impact, so the depth of the auxiliary cut-off wall of the side slope section 8 is smaller as the depth is higher.

Geotechnical cloth 4 is paved at the bottom of the reinforcement cage 2, and anchor rods 6 penetrating into soil of a trench 1 below the geotechnical cloth 4 are evenly distributed on the lower surface of the reinforcement cage 2. The anchor rod 6 plays an auxiliary fixing role, and the reinforcement cage 2 is prevented from being damaged, separated from the ground and even turned up due to strong flood impact.

The above description is presented only as a practical solution of the utility model and is not intended as a single limitation on the solution itself.

Claims

1. An anti-scour flood discharge channel, includes the channel, its characterized in that: the front end inlet of the channel is provided with a permeation interception device, the top end of the permeation interception device is positioned above the ground line of the channel, the bottom end of the permeation interception device is inserted below the ground line of the channel, and the permeation interception device comprises a channel bottom section and a side slope section; and paving a reinforcement cage on the inner surface of a channel at the downstream side of the top end of the infiltration intercepting device, filling stone blocks in the reinforcement cage, backfilling soil layers on the upper surface of the reinforcement cage, and planting plants to form an ecological restoration layer.

2. The scour protection flood discharge channel according to claim 1, wherein: the top end of the intercepting and penetrating device is flush with the upper surface of the reinforcement cage, and the water facing side of the intercepting and penetrating device is an arc-shaped surface.

3. The scour protection flood discharge channel according to claim 1, wherein: the thickness of the reinforcement cage at the bottom of the ditch is larger than that of the side slope, and the thickness of the reinforcement cage of the side slope is gradually thinned from bottom to top; the grid holes of the reinforcement cage are square or regular hexagon.

4. The scour protection flood discharge channel according to claim 1, wherein: the ditch bottom section of the seepage interception device is an interception wall, and the gradient of the interception wall is 1:1.

5. The scour protection flood discharge channel according to claim 4, wherein: the side slope section is a secondary cut-through wall, and the depth of the secondary cut-through wall inserted below the side slope ground line is smaller than the depth of the cut-through wall inserted below the ditch bottom ground line.

6. The scour protection flood discharge channel according to claim 4, wherein: the side slope section is a hardened road.

7. Scour protection flood discharge channel according to any one of claims 1-6, wherein: geotechnical cloth is paved at the bottom of the reinforcement cage, and anchor rods penetrating into soil of a trench below the geotechnical cloth are evenly distributed on the lower surface of the reinforcement cage.