CN213805429U - Protection system for semi-hillside flood discharge ditch - Google Patents
Protection system for semi-hillside flood discharge ditch Download PDFInfo
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- CN213805429U CN213805429U CN202021901912.3U CN202021901912U CN213805429U CN 213805429 U CN213805429 U CN 213805429U CN 202021901912 U CN202021901912 U CN 202021901912U CN 213805429 U CN213805429 U CN 213805429U
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- side slope
- discharge ditch
- hillside
- ditch
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Abstract
The utility model relates to the technical field of flood discharge in mountainous areas, in particular to a protection system for a semi-hillside flood discharge ditch, which comprises a side slope frame beam fixed on a side slope, wherein the bottom end of the side slope frame beam is fixedly connected with a flood discharge ditch; because the side slope frame roof beam is fixed in on the side slope, consequently the side slope frame roof beam can consolidate the side slope is favorable to improving the stability of side slope for the side slope is more stable, forms permanent side slope, and because the side slope frame roof beam with the flood discharge ditch is fixed connection, consequently the side slope frame roof beam with the flood discharge ditch forms an integral support system, prevents the flood discharge ditch slides under the impact of rainwater, has improved the security that the flood discharge ditch carries out the flood discharge, and then improves the flood discharge ability in this area.
Description
Technical Field
The utility model relates to a mountain area flood discharge technical field, especially a hillside flood discharge ditch protection system.
Background
After more than twenty years of operation and accumulation, supporting facilities in a certain urban refuse landfill are seriously aged, the pressure of a main drainage pipeline in a ring field is overlarge, and at the time of rainstorm, the slope and the buildings in the field are washed by rainwater at random, so that the safety and environmental risks are increasingly prominent. In order to relieve the pressure of a main drainage pipeline of a circular field, a new emergency and disaster relief drainage channel needs to be built in a flow distribution field for rainwater. The starting point is the north side of the first-stage refuse landfill area in the field, the ground elevation is 186.5m, the terminal point is a large-pit reservoir dam, the ground elevation is 40.3m, and the linear distance between the two points is about 850 m.
At present, drainage channels are generally constructed in a semi-hillside section by burying culvert pipes or draining (discharging) flood tunnels. The culvert pipe is embedded by excavating a deep foundation pit at the top of the hillside, and the foundation pit is backfilled after the embedding is finished; the flood discharge tunnel passes through the semi-hillside section directly in a hidden tunnel mode, but the tunnel and the semi-hillside section do not generate a large-area permanent side slope after construction. When the large-section flood discharge ditch is used as a drainage channel of a half-hill slope section, the slope needs to be excavated during construction in order to ensure the width of the flood discharge ditch body, so that a natural slope with a certain area is formed, but the natural slope is exposed outside for a long time and is washed by rainwater, so that the slope is unstable, the phenomenon of landslide easily occurs, and the structural stability of the flood discharge ditch is further influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: when adopting as the drainage channel of half hillside district with big section flood discharge ditch among the prior art, in order to guarantee the width of flood discharge ditch body, need excavate the hillside during the construction to formed the natural side slope of certain area, nevertheless this kind of natural side slope exposes outside for a long time, receives the rainwater to erode, and not only the side slope is unstable, the phenomenon of landslide appears easily, and then still can influence the stable in structure's of flood discharge ditch problem, and provide a half hillside flood discharge ditch protection system.
In order to realize the purpose, the utility model discloses a technical scheme be:
the utility model provides a half hillside flood discharge ditch protection system, is including fixing the side slope frame roof beam on the side slope, side slope frame roof beam bottom fixedly connected with flood discharge ditch.
Because the side slope frame roof beam is fixed in on the side slope, consequently the side slope frame roof beam can consolidate the side slope is favorable to improving the stability of side slope for the side slope is more stable, forms permanent side slope, and because the side slope frame roof beam with the flood discharge ditch is fixed connection, consequently the side slope frame roof beam with the flood discharge ditch forms an integral support system, prevents the flood discharge ditch slides under the impact of rainwater, has improved the security that the flood discharge ditch carries out the flood discharge, and then improves the flood discharge ability in this area.
Wherein, in some steep hillside sections, the side slope is formed by grading and sectional excavation.
As the utility model discloses an optimal scheme, side slope frame roof beam with fixedly connected with connecting reinforcement between the gutter. Through the connecting reinforcement the side slope frame roof beam with establish firm connection between the drainage ditch, effectively guaranteed the stability of drainage ditch at the side slope district.
As the utility model discloses an optimal scheme, side slope frame roof beam with concrete has been pour between the gutter, and is formed with concrete platform. Rainwater flowing down on the side slope flows into the flood discharge ditch from the surface of the concrete platform, and the direct impact of the rainwater on the flood discharge ditch body is avoided.
As the utility model discloses an optimal scheme, the concrete platform orientation the direction slope of flood discharge ditch is about 1%, avoids the rainwater to pile up on the concrete platform.
As the preferred scheme of the utility model, be equipped with passive flexible protection network on the concrete platform. The device is used for intercepting some falling rocks and avoiding directly falling into the flood discharge ditch to block water flow.
As the utility model discloses an optimal scheme, the inside side slope frame roof beam reinforcing bar that is equipped with of side slope frame roof beam, side slope frame roof beam reinforcing bar is connected with a plurality of side slope support stock, the length that the side slope support stock inserted in the side slope is not less than 15 m. So, the side slope frame roof beam can be fixed steadily on the side slope.
As the preferred scheme of the utility model, the side slope support stock with the slope surface normal direction's contained angle is not more than 20.
As the utility model discloses an optimized scheme, it sets up in the drilling to strut the stock, the drilling with the concrete has been pour between the side slope support stock. So that the side slope support anchor rod is stably inserted on the side slope and the anchor rod is prevented from sliding out.
As the utility model discloses an optimal scheme, the inside flood discharge ditch reinforcing bar that is equipped with of flood discharge ditch, side slope frame roof beam with still be equipped with connecting reinforcement between the flood discharge ditch, connecting reinforcement's one end with the side slope support stock is connected, connecting reinforcement's the other end with the flood discharge ditch reinforcing bar is connected.
As the preferred scheme of the utility model, arrange the flood drain below and be equipped with the flood drain bed course.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
because the side slope frame roof beam is fixed in on the side slope, consequently the side slope frame roof beam can consolidate the side slope is favorable to improving the stability of side slope for the side slope is more stable, forms permanent side slope, and because the side slope frame roof beam with the flood discharge ditch is fixed connection, consequently the side slope frame roof beam with the flood discharge ditch forms an integral support system, prevents the flood discharge ditch slides under the impact of rainwater, has improved the security that the flood discharge ditch carries out the flood discharge, and then improves the flood discharge ability in this area.
Drawings
Fig. 1 is a schematic structural view of the protection system for the semi-hillside flood discharge ditch of the present invention.
Icon: 1-original ground line; 2-arranging the flood ditch cushion layer; 3, arranging the flood ditches; 4-side slope support anchor rod; 5-a side slope frame beam; 6-connecting steel bars; 7-a concrete platform; 8-passive flexible protective net.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Example 1
As shown in fig. 1, a protection system for a semi-hillside flood discharge ditch comprises a side slope frame beam 5 fixed on a side slope, wherein a flood discharge ditch 3 is fixedly connected to the bottom end of the side slope frame beam 5.
Slope frame roof beam reinforcing bar is equipped with inside slope frame roof beam 5, flood discharge ditch 3 is inside to be equipped with the flood discharge ditch reinforcing bar. The side slope frame beam steel bars are connected with a plurality of side slope support anchor rods 4, the side slope support anchor rods 4 are arranged in drill holes, and concrete is poured between the drill holes and the side slope support anchor rods 4. The length of the side slope support anchor rod 4 inserted into the side slope is not less than 15m, and the included angle between the side slope support anchor rod 4 and the normal direction of the slope surface of the side slope is less than or equal to 20 degrees.
And a connecting steel bar 6 is fixedly connected between the side slope frame beam 5 and the flood discharge ditch 3. One end of the connecting steel bar 6 is connected with the side slope support anchor rod 4, and the other end of the connecting steel bar 6 is connected with the flood discharge ditch steel bar.
The side slope frame roof beam 5 with concrete has still been pour between the drainage ditch 3, and is formed with concrete platform 7, concrete platform 7 orientation drainage ditch 3's direction slope about 1%, avoid the rainwater to pile up on the concrete platform 7. And a passive flexible protective net 8 is arranged on the concrete platform 7 and used for intercepting sundries such as rockfall and avoiding the blockage of the flood discharge ditch 3.
And a flood discharge ditch cushion layer 2 is also arranged below the flood discharge ditch 3.
The flood discharge ditch 3 is a large-section flood discharge ditch which has a large water passing section (S is more than or equal to 10 square meters) and meets the high rainstorm intensity standard (one meeting in 100 years). And selecting whether the side slope needs to be excavated according to specific working conditions.
For a steep hillside, the elevation of the trench bottom is basically located in a half hillside section, and during construction, a side slope needs to be excavated and supported firstly, and then the flood discharge trench 3 is constructed.
The construction steps of the protective system of the semi-hillside flood discharge ditch comprise:
the method comprises the following steps: according to the measurement lofting result, slope is set from the original ground line 1 excavation starting point according to the slope ratio of 1:0.75, the side slope is excavated in a grading and segmenting mode, and the height of each grade of side slope is not more than 10 m.
Step two: after excavation of each section of side slope is finished, holes are drilled at intervals of 2M multiplied by 2M, the diameter phi of each drilled hole is 130mm, side slope support anchor rods 4 are arranged in the drilled holes, the exposed bending length of each side slope support anchor rod 4 is 1M, the anchoring length is not less than 15M, an included angle of 20 degrees is formed between each side slope surface and the normal direction of the side slope surface, and M30 cement mortar is poured into the drilled holes.
Step three: and (3) manually grooving and binding the reinforcing steel bars of the side slope frame beam, wherein the width of the side slope frame beam is 5cm, and the thickness of the side slope frame beam is 35 cm. During construction, one end of the slope support anchor rod 4 exposed and bent is hooked on the slope frame beam reinforcing steel bar; the side slope frame roof beam 5 with each node of the same height within range of flood discharge ditch 3 is pre-buried well first connecting reinforcement, first connecting reinforcement adopts HRB400 phi 32 reinforcing bar, the one end bending of first connecting reinforcement is caught in side slope support stock 4, and bending length is not less than 30cm, and the other end stretches out side slope frame roof beam 5 node is outer not less than 1.5m, pour after first connecting reinforcement ligature, pre-buried completion side slope frame roof beam 5C30 concrete.
Step four: after each section of the side slope frame beam 5 is constructed, pouring 15cm thick flood discharge ditch cushion layer 2C15 concrete, binding the bottom plate reinforcing steel bars of the flood discharge ditch 3, pouring bottom plate C30 concrete, binding the side wall reinforcing steel bars of the flood discharge ditch 3, embedding second connecting reinforcing steel bars at the same height of the first connecting reinforcing steel bars embedded in the side walls of the flood discharge ditch 3 and the nodes of the side slope frame beam 5 in construction, wherein one end of each second connecting reinforcing steel bar is bent to hook the reinforcing steel bars in the side walls of the flood discharge ditch 3, the bending length is not less than 30cm, the other end of each second connecting reinforcing steel bar extends out of the flood discharge ditch 3 and is welded and fixed with the first connecting reinforcing steel bars embedded in the nodes of the extended side slope frame beam 5 to form connecting reinforcing steel bars 6, the lap joint length is not less than 10d, the diameter of the first connecting reinforcing steel bars is represented here, and the length of 10d is 10 times d, and pouring the 3-steel bar of the flood discharge ditch and the C30 concrete on the 3-side wall of the flood discharge ditch after the second connecting steel bar is bound and embedded.
Step five: c25 concrete is backfilled between the flood discharge ditch 3 and the side slope and sealed to form a concrete platform 7, and a 1% slope is found out at the top of the concrete platform 7 and inclines towards the flood discharge ditch 3;
and a passive flexible protective net 8 is installed at the position, 1.5m away from the side slope, of the top of the concrete platform 7 in a pulling-through mode.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. A protection system for a semi-hillside flood discharge ditch is characterized by comprising a side slope frame beam (5) fixed on a side slope, wherein the bottom end of the side slope frame beam (5) is fixedly connected with a flood discharge ditch (3);
connecting steel bars (6) are fixedly connected between the side slope frame beams (5) and the flood discharge ditches (3);
concrete is poured between the side slope frame beam (5) and the flood discharge ditch (3), and a concrete platform (7) is formed.
2. The protection system for the semi-hillside flood discharge trench according to claim 1, wherein a passive flexible protective net (8) is arranged on the concrete platform (7).
3. The semi-hillside flood discharge ditch protection system according to claim 1, wherein slope frame beam reinforcements are arranged inside the slope frame beams (5), the slope frame beam reinforcements are connected with a plurality of slope support anchor rods (4), and the length of the slope support anchor rods (4) inserted into the slope is not less than 15 m.
4. The protection system for the semi-hillside flood discharge ditch according to claim 3, wherein the included angle between the slope support anchor rod (4) and the normal direction of the slope surface of the side slope is not more than 20 degrees.
5. The protection system for the semi-hillside flood discharge ditch according to claim 3, wherein the side slope support anchor rods (4) are arranged in drill holes, and concrete is poured between the drill holes and the side slope support anchor rods (4).
6. The protection system for the semi-hillside flood discharge ditch according to claim 3, wherein a flood discharge ditch reinforcing steel bar is arranged inside the flood discharge ditch (3), one end of the connecting reinforcing steel bar (6) is connected with the side slope support anchor rod (4), and the other end of the connecting reinforcing steel bar (6) is connected with the flood discharge ditch reinforcing steel bar.
7. The protection system for the semi-hillside flood discharge ditch according to any one of claims 1 to 6, wherein a flood discharge ditch cushion layer (2) is arranged below the flood discharge ditch (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021901912.3U CN213805429U (en) | 2020-09-03 | 2020-09-03 | Protection system for semi-hillside flood discharge ditch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021901912.3U CN213805429U (en) | 2020-09-03 | 2020-09-03 | Protection system for semi-hillside flood discharge ditch |
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| CN213805429U true CN213805429U (en) | 2021-07-27 |
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| CN202021901912.3U Active CN213805429U (en) | 2020-09-03 | 2020-09-03 | Protection system for semi-hillside flood discharge ditch |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114687361A (en) * | 2021-12-09 | 2022-07-01 | 中国铁建大桥工程局集团有限公司 | Construction method for preventing landslide of side slope at inlet of flood discharge tunnel |
| CN115262487A (en) * | 2022-06-15 | 2022-11-01 | 河南省水利第二工程局 | Construction method of water conservancy tunnel connecting section |
-
2020
- 2020-09-03 CN CN202021901912.3U patent/CN213805429U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114687361A (en) * | 2021-12-09 | 2022-07-01 | 中国铁建大桥工程局集团有限公司 | Construction method for preventing landslide of side slope at inlet of flood discharge tunnel |
| CN114687361B (en) * | 2021-12-09 | 2024-05-03 | 中国铁建大桥工程局集团有限公司 | Construction method for flood discharge tunnel entrance side slope anti-slip slope |
| CN115262487A (en) * | 2022-06-15 | 2022-11-01 | 河南省水利第二工程局 | Construction method of water conservancy tunnel connecting section |
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