CN212771816U - Quick drainage structure of dam crest pavement cable pit and road surface escape canal - Google Patents
Quick drainage structure of dam crest pavement cable pit and road surface escape canal Download PDFInfo
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- CN212771816U CN212771816U CN202020892307.8U CN202020892307U CN212771816U CN 212771816 U CN212771816 U CN 212771816U CN 202020892307 U CN202020892307 U CN 202020892307U CN 212771816 U CN212771816 U CN 212771816U
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Abstract
The utility model discloses a rapid drainage structure of a cable trench and a pavement drainage ditch at a dam crest sidewalk, which comprises a wave-proof wall and a sidewalk arranged at the dam crest, wherein the sidewalk is 30cm higher than the road surface of the dam crest, and the sidewalk is arranged close to the wave-proof wall at the upstream of a dam; a cable trench and a drainage trench are arranged on one side of the sidewalk close to the wave wall, wherein the drainage trench is positioned at the bottom of the cable trench, and the cable trench and the drainage trench are combined into a whole and arranged in a combined manner; and drainage pipes are arranged at the bottom of the contact position of the sidewalk and the dam top highway and the bottom of the drainage ditch. According to the scheme, the dam crest cable trench and the drainage trench are combined and arranged at the position of the dam crest sidewalk, the drainage pipes are arranged at the contact position of the sidewalk and the dam crest pavement and at the bottom of the drainage trench according to a certain distance, angle steel is arranged at the opening at the top of the cable trench and is fixed by anchor bars, so that the aims of saving the dam crest space, protecting the cable trench structure, simplifying the construction process and quickly discharging the dam crest cable trench, the drainage trench and the dam crest pavement rainwater are fulfilled.
Description
Technical Field
The utility model belongs to the technical field of hydraulic and hydroelectric engineering, be applicable to dam crest cable pit and dam crest escape canal design and construction among the hydraulic and hydroelectric engineering.
Background
In water conservancy and hydropower engineering, a sidewalk higher than a dam crest highway by a certain height is often required to be arranged at the dam crest to meet the requirement of pedestrians at the dam crest, meanwhile, a cable trench is arranged at the dam crest to meet the requirement of laying cables at the dam crest, and a drainage trench is further arranged to drain rainwater so as to avoid rainwater at the dam crest.
In the past hydraulic and hydroelectric engineering, a dam crest sidewalk, a cable trench and a drainage ditch are often arranged separately. The dam crest pavement is higher, so it does not receive the influence of drainage factor, and cable pit and escape canal need set up certain slope in the ditch bottom in order to lead the rainwater to the off-site, but because cable pit and escape canal often are longer, only rely on its ditch bottom longitudinal slope to flow automatically, hardly in time effectively lead the rainwater out, can form ponding in cable pit and the escape canal ditch, can overflow even under the special circumstances, cause dam crest highway ponding. In addition, if rainwater in the cable trench cannot be drained in time, the side wall of the cable trench is wet due to the existence of accumulated water, the bracket of the cable trench is corroded, the ventilation condition is limited, and the air in the cable trench is humid for a long time, so that the safety of the cable is endangered, and the electricity utilization safety accident is caused. Along with the progress of the technology, for the convenience of construction and the saving of the dam crest space, some projects are combined with a dam crest cable trench and a drainage trench at present, but the problem that rainwater in the trench cannot be effectively drained in time still exists, so that water is accumulated in the trench, and the problem is caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a quick drainage structures in dam crest pavement department cable pit and road surface escape canal to the not enough of prior art existence.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a rapid drainage structure of a cable trench and a pavement drainage ditch at a sidewalk at the top of a dam comprises a wave-proof wall and the sidewalk arranged at the top of the dam, wherein the sidewalk is 30cm higher than a highway pavement at the top of the dam, and the sidewalk is arranged close to the wave-proof wall at the upstream of the dam; a cable trench and a drainage trench are arranged on one side of the sidewalk close to the wave wall, wherein the drainage trench is positioned at the bottom of the cable trench, and the cable trench and the drainage trench are combined into a whole and arranged in a combined manner; and drainage pipes are arranged at the bottom of the contact position of the sidewalk and the dam top highway and the bottom of the drainage ditch.
Furthermore, a certain gradient i is set towards the sidewalk direction on the road surface of the dam crest, and the gradient i is 0.01.
Furthermore, the drain pipe at the bottom of the sidewalk and the drain pipe at the bottom of the drainage ditch are provided with certain gradients j, and j is not more than 0.03.
Further, a cable support is arranged in the cable trench, and a polymer composite material cover plate is arranged at the top of the cable trench.
Furthermore, angle steel is embedded at openings on two sides of the top of the cable trench, and the angle steel is fixed through anchor bars.
Compared with the prior art, the utility model discloses dam crest pavement exceeds dam crest highway 30cm, makes things convenient for the dam crest pedestrian current, and simultaneously, the pavement is close to the unrestrained wall arrangement in dam upper reaches, plays the supporting role to the unrestrained wall, can increase the stability of unrestrained wall structure, reduces the thickness of unrestrained wall structure. The drainage ditch is located the bottom of cable pit, arranges dam crest cable pit and drainage ditch combination to arrange it in the position of dam crest pavement, reduced the occupation space of corresponding structure, can effectively solve the too big problem of dam crest space occupation when dam crest pavement, cable pit, drainage ditch are arranged alone respectively, simplify dam crest structure, convenient construction and later stage operation maintenance.
Furthermore, the utility model discloses a pavement and dam crest road contact position and escape canal bottom set up the drain pipe according to certain distance according to engineering actual conditions, and the rainwater of dam crest highway can in time lead to arrange to the escape canal in, and the drain pipe of rethread escape canal bottom is in time led to arrange outside the dam, avoids dam crest road surface and cable pit ponding, has overcome the shortcoming that needs the manual work to carry out ponding investigation and artifical drainage after the rain.
Additionally, the utility model discloses a cable pit and escape canal combine to arrange and set up the quick drainage of drain pipe, have overcome because lead to behind the cable pit ponding that the cable heat dissipation is uneven, the ageing electric safety accident of initiation of cable is conflagration problem even. The cable trench top sets up the polymer composite apron and replaces traditional reinforced concrete apron, and the construction of being convenient for is simultaneously at the pre-buried angle steel of cable trench top both sides breach department to fixed with the angle steel with the anchor bar, reinforcing cable trench top edge's intensity avoids cable trench top breach to be in and leads to cable trench structure damage under the exogenic action such as its upper cover plate.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Description of reference numerals: 1-wave wall; 2-sidewalk; 3-dam crest highway; 4-cable trench; 5-a drainage ditch; 6-cover plate; 7-angle steel; 8-anchor bars; 9-a cable holder; 10-a drain pipe.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1, the utility model relates to a quick drainage structures in dam crest pavement department cable pit and road surface escape canal mainly includes following component: the dam comprises a wave wall 1, a sidewalk 2, a dam crest road 3, a cable trench 4, a drainage ditch 5, a cover plate 6, angle steel 7, anchor bars 8, a cable support 9 and a drainage pipe 10.
The sidewalk 2 at the top of the dam is 30cm higher than the road surface 3 of the highway at the top of the dam, so that pedestrians at the top of the dam can conveniently pass through the sidewalk, and meanwhile, the sidewalk 2 is arranged next to the wave wall 1 at the upstream of the dam to support the wave wall 1.
The method is implemented specifically as follows: the drainage ditch 5 is positioned at the bottom of the cable trench 4, the cable trench 4 and the drainage ditch 5 are combined into a whole to be arranged, and the drainage ditch is arranged at the position of the sidewalk 2, so that the dam crest space is saved. The bottom of the contact position of the sidewalk 2 and the dam crest road 3 and the bottom of the drainage ditch 5 are provided with a drainage pipe 10 according to a certain distance according to the actual engineering situation, and the size of the drainage pipe 10 can be adjusted according to the engineering requirement.
The road surface of the dam crest highway 3 is provided with a certain gradient i (i is usually 0.01) towards the sidewalk 2, so that rainwater can be conveniently gathered towards the sidewalk 2 in time and flows into the drainage ditch 5 through the drainage pipe 10 arranged at the bottom of the sidewalk 2.
The drain pipes 10 at the bottom of the sidewalk 2 and the drain pipes 10 at the bottom of the drainage ditch 5 are provided with certain gradients j (j is not less than 0.03), so that rainwater on the dam crest highway 3 can be timely drained into the drainage ditch 5, and then is timely drained out of the dam through the drain pipes 10 at the bottom of the drainage ditch 5.
Be provided with cable support 9 in the cable pit 4, the top sets up polymer composite apron 6 and replaces traditional reinforced concrete apron, the construction of being convenient for, at the pre-buried angle steel 7 of 4 top both sides openings of cable pit simultaneously to it is fixed with angle steel 7 with anchor bar 8, strengthen the intensity at 4 top opening edges of cable pit, avoid 4 top openings of cable pit to be in its upper cover plate 6 wait that the exogenic action leads to cable pit 4 structural damage down.
Of course, the above is only the specific application example of the present invention, and the present invention has other embodiments, and all technical solutions formed by equivalent replacement or equivalent transformation fall within the protection scope claimed by the present invention.
Claims (5)
1. The utility model provides a quick drainage structures of dam crest pavement department cable pit and road surface escape canal, includes wave wall (1) and sets up pavement (2) at the dam crest, its characterized in that: the sidewalk (2) is 30cm higher than the road surface of the dam top highway (3), and the sidewalk (2) is arranged close to the wave wall (1) at the upstream of the dam; a cable trench (4) and a drainage trench (5) are arranged on one side, close to the wave wall (1), of the sidewalk (2), wherein the drainage trench (5) is located at the bottom of the cable trench (4), and the cable trench (4) and the drainage trench (5) are combined into a whole and arranged; and drainage pipes (10) are arranged at the bottom of the contact position of the sidewalk (2) and the dam crest highway (3) and the bottom of the drainage ditch (5).
2. The rapid drainage structure for the cable trench and the road surface drainage trench at the sidewalk at the top of the dam according to claim 1, which is characterized in that: and a certain gradient i is set in the direction of the pavement (2) on the dam crest highway (3), and the gradient i is 0.01.
3. The rapid drainage structure for the cable trench and the road surface drainage trench at the sidewalk at the top of the dam according to claim 1, which is characterized in that: and the drain pipes (10) at the bottoms of the sidewalks (2) and the drain pipes (10) at the bottoms of the drainage ditches (5) are provided with certain gradients j, and j is not more than 0.03.
4. The rapid drainage structure for the cable trench and the road surface drainage trench at the sidewalk at the top of the dam according to claim 1, which is characterized in that: a cable support (9) is arranged in the cable trench (4), and a polymer composite material cover plate (6) is arranged at the top of the cable trench.
5. The rapid drainage structure for the cable trench and the road surface drainage trench at the sidewalk at the top of the dam according to claim 1, which is characterized in that: the angle steel (7) is embedded at openings at two sides of the top of the cable trench (4), and the angle steel (7) is fixed by anchor bars (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020892307.8U CN212771816U (en) | 2020-05-25 | 2020-05-25 | Quick drainage structure of dam crest pavement cable pit and road surface escape canal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020892307.8U CN212771816U (en) | 2020-05-25 | 2020-05-25 | Quick drainage structure of dam crest pavement cable pit and road surface escape canal |
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| CN212771816U true CN212771816U (en) | 2021-03-23 |
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| CN202020892307.8U Active CN212771816U (en) | 2020-05-25 | 2020-05-25 | Quick drainage structure of dam crest pavement cable pit and road surface escape canal |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113668674A (en) * | 2021-08-19 | 2021-11-19 | 华能澜沧江水电股份有限公司 | Novel drainage ditch |
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2020
- 2020-05-25 CN CN202020892307.8U patent/CN212771816U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113668674A (en) * | 2021-08-19 | 2021-11-19 | 华能澜沧江水电股份有限公司 | Novel drainage ditch |
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