CN111997163A - Embankment-road integrated engineering cable trench drainage structure and drainage method thereof - Google Patents
Embankment-road integrated engineering cable trench drainage structure and drainage method thereof Download PDFInfo
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- CN111997163A CN111997163A CN202010789833.6A CN202010789833A CN111997163A CN 111997163 A CN111997163 A CN 111997163A CN 202010789833 A CN202010789833 A CN 202010789833A CN 111997163 A CN111997163 A CN 111997163A
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/02—Arrangement of sewer pipe-lines or pipe-line systems
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/04—Pipes or fittings specially adapted to sewers
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Abstract
The invention discloses a dyke and road integrated engineering cable trench drainage structure. The energy dissipation drainage culvert comprises an energy dissipation drainage culvert water inlet pipe, a drainage connecting pipe, a cable trench water outlet pipe and an energy dissipation drainage culvert; the drainage connecting pipe is positioned below the side of the water outlet pipe of the cable trench and above the side of the water inlet pipe of the energy dissipation drainage culvert; one end of the drainage connecting pipe is communicated with a water outlet pipe of the cable trench, and the other end of the drainage connecting pipe is communicated with a water inlet pipe of the energy dissipation drainage culvert; the energy dissipation drainage culvert water inlet pipe is anchored on the side wall of the energy dissipation drainage culvert; the energy dissipation drainage culvert is positioned above the dike hip side and embedded in the dike slope; the height between the energy dissipation drainage culvert and the dike hip platform is less than or equal to 0.5 m; the energy dissipation drainage culvert is of a hollow structure with one open end; the water seepage well is connected with the lower end of the cable trench; the cable trench water outlet pipe is connected to the lower end of the side of the seepage well. The invention has the advantages of achieving the purpose of energy dissipation and buffering of cable trench drainage with lower manufacturing cost and smaller structure and achieving good landscape effect. The invention also discloses a drainage method of the dyke-road integrated engineering cable trench drainage structure.
Description
Technical Field
The invention relates to the technical field of dyke-road integrated engineering drainage, in particular to a dyke-road integrated engineering cable trench drainage structure. The invention also relates to a drainage method of the embankment-road integrated engineering cable trench drainage structure.
Background
With the rapid development of cities, ecological green development and city foundation network construction are continuously fused, and the embankment-road integrated engineering is one of the products of green ecological city development and gradually becomes a new concern in engineering construction in recent years. The embankment engineering waterfront construction creates an excellent urban waterfront landscape space on the basis of meeting the flood control requirement, simultaneously, the embankment top road and the urban main road network are fused, the combination of the road landscape and the waterscape improves the ecological space effect of urban trip, and the dyke engineering waterfront construction is a new focus of green urban construction.
The embankment engineering integrates the advantages of both embankments and roads, and in the aspect of road drainage, the water front characteristic of the embankment engineering enables the road surface to drain water by referring to the embankment engineering, embankment slopes are adopted for scattered drainage (unorganized drainage) to lakes or river channels, and centralized rainwater pipelines do not need to be buried in the roadbed.
The embankment engineering has the characteristics of urban roads, the urban roads on the top of the embankment need to be provided with necessary illumination and cable laying, and the cable trench can be buried under a sidewalk on the back water side, so that the flood control function of the embankment is not influenced, and convenient and fast maintenance conditions can be provided. The drainage problem faced by the cable trench of the traditional urban road also exists in the embankment project, the traditional urban road can connect accumulated water in the cable trench to a rainwater pipe network through a PVC pipe for drainage, but the method cannot be applied to the embankment project adopting embankment slope for scattered drainage. If the accumulated water in the cable trench is directly drained to the embankment slope surface by the PVC pipe, the concentrated water flow can cause the scouring of the embankment slope for the ecological turf embankment slope, so that the water and soil loss is caused, and the stability of the embankment slope is also adversely affected.
The prior patent CN104153452A, cable trench drainage structure and cable trench construction method, discloses a cable trench drainage structure and cable trench construction method for automatically draining accumulated water in cable trenches on corridor sections; the connecting pipe is arranged between the water collecting ditch and the water seepage well, and the connecting pipe is obliquely arranged, so that water in the water collecting ditch can be drained to the water seepage well quickly through the connecting pipe; it can be seen that the patent is used for discharging the cable trench ponding to the infiltration well.
Aiming at the problem of scour prevention of the dike slope, the conventional method, such as constructing a concrete drainage ditch along the side slope, can prevent water flow from scouring the side slope, but the drainage ditch is longer in the method, and the construction cost is higher. For the ecological landscape embankment, the strip-shaped concrete drainage ditch further destroys the integrity of the turf ecological slope protection and influences the landscape effect of the ecological embankment; the drainage ditch has a large height difference with the dike prop platform and is far away from the prop platform, which causes difficulty in inspection and maintenance.
Therefore, there is a need to develop a structure for draining a cable trench for embankment integration engineering, which is anti-scour, and is convenient for inspection and maintenance.
Disclosure of Invention
The invention aims to provide a dyke and road integrated engineering cable trench drainage structure, which achieves the purposes of energy dissipation and buffering by using a lower manufacturing cost and a smaller structure, achieves a good landscape effect by structural treatment and is convenient to inspect and maintain; the problems of scour prevention of the dike slope, energy dissipation and speed reduction of water flow and difficulty in inspection and maintenance are solved.
The second purpose of the invention is to provide a drainage method of the cable trench drainage structure of the embankment-in-one engineering, which forms a complete path for drainage of the cable trench, so that accumulated water in the cable trench is safely and smoothly drained to an embankment side slope.
In order to achieve the first object of the present invention, the technical solution of the present invention is: the utility model provides an embankment unification engineering cable pit drainage structures which characterized in that: the energy dissipation drainage culvert comprises an energy dissipation drainage culvert water inlet pipe, a drainage connecting pipe, a cable trench water outlet pipe and an energy dissipation drainage culvert; the drainage connecting pipe is positioned below the side of the water outlet pipe of the cable trench and above the side of the water inlet pipe of the energy dissipation drainage culvert;
one end of the drainage connecting pipe is communicated with the water outlet pipe of the cable trench, and the other end of the drainage connecting pipe is communicated with the water inlet pipe of the energy dissipation drainage culvert;
the energy dissipation drainage culvert water inlet pipe is anchored on the side wall of the energy dissipation drainage culvert;
the energy dissipation drainage culvert is positioned above the dike hip side and embedded in the dike slope; the height between the energy dissipation drainage culvert and the dike hip platform is less than or equal to 0.5 m;
the energy dissipation drainage culvert is of a hollow structure with one open end;
the cable trench is arranged below the sidewalk on the backwater side of the dyke top;
the water seepage well is connected with the lower end of the cable trench;
and the water outlet pipe of the cable trench is connected to the lower end of the side of the seepage well.
In the technical scheme, the energy dissipation drainage culvert comprises a drainage outlet plate, an energy dissipation ridge, an energy dissipation pool, a top plate, a side wall, a connecting plate and a back wall;
the top plate is positioned above the energy dissipation pool and above the side of the drainage outlet plate;
the side edges of the drainage outlet plate, the energy dissipation ridge, the energy dissipation pool, the top plate, the connecting plate and the back wall are all connected through the side wall;
the water inlet end of the energy dissipation pool is connected with the connecting plate, and the water outlet end of the energy dissipation pool is vertically connected with the energy dissipation ridge;
the upper end of the back wall is vertically connected with the top plate, and the lower end of the back wall is vertically connected with the connecting plate; the upper end of the energy dissipation ridge is connected with the drainage outlet plate;
and the drainage outlet plate, the energy dissipation ridge, the energy dissipation pool, the top plate, the side wall, the connecting plate and the back wall form a hollow open type trapezoidal structure.
In the above technical solution, the energy dissipation sill is a vertical sill wall;
the energy dissipation pool is a flat bottom plate;
the energy dissipation drainage culvert water inlet pipe is arranged on the back wall and communicated with the energy dissipation pool.
In the technical scheme, the energy dissipation drainage culvert water inlet pipe is in a round pipe shape and is an anti-corrosion steel pipe;
the drainage connecting pipe is a PVC drainage pipe or a PE pipe or an anticorrosive steel pipe;
the cable trench water outlet pipe is in a round pipe shape and is an anti-corrosion steel pipe.
In the technical scheme, the energy dissipation drainage culvert is of an integrated pouring structure made of reinforced concrete or steel fiber concrete.
In the technical scheme, the drainage connecting pipe is connected with the cable trench water outlet pipe through a bent pipe and is connected with the energy dissipation drainage culvert water inlet pipe through a bent pipe; and the water outlet pipe of the cable trench is anchored at the lower end of the side of the water seepage well.
In the technical scheme, the trash rack is arranged at the opening end of the energy dissipation drainage culvert.
In order to achieve the second object of the present invention, the technical solution of the present invention is: the drainage method of the levee-combined engineering cable trench drainage structure is characterized in that: comprises the following steps of (a) carrying out,
the method comprises the following steps: water flow enters the cable trench through the sidewalk and then flows into the water seepage well;
step two: the water flow flowing into the seepage well sequentially passes through a cable trench water outlet pipe, a drainage connecting pipe, an energy dissipation drainage culvert water inlet pipe, an energy dissipation pool, an energy dissipation ridge and a drainage outlet plate and flows to an embankment prop platform;
step three: and repeating the first step to the second step until the drainage of the accumulated water in the cable trench is completed.
The invention has the following advantages:
(1) the drainage connecting pipe is arranged, accumulated water in the cable trench of the embankment can be drained to the position near the embankment slope through the connecting pipe, and therefore rainwater in the cable trench is prevented from accumulating;
(2) the invention reduces the flow velocity of the accumulated water of the cable trench of the embankment by the effective buffering of the energy dissipation and drainage culvert, dissipates the water energy, optimizes the flow state to form dispersed unorganized water flow, and greatly reduces the scouring influence on the embankment slope;
(3) the energy dissipation drainage culvert is buried in the filling soil of the dike slope, so that the ecological landscape of the dike slope is almost not influenced, and the landscape effect is obviously superior to that of a concrete drainage ditch;
(4) the energy dissipation drainage culvert has the advantages of small structure size (the size of the energy dissipation drainage culvert is about 0.8m multiplied by 1.2m, and the size of the drainage ditch is about 0.5m multiplied by 6.0m), small material consumption of concrete and the like, simple modeling, modularized mass production and low manufacturing cost;
(5) the energy dissipation drainage culvert has a simple structure, can be prefabricated in advance, is simple and convenient to construct on site, and is beneficial to shortening the construction period;
(6) the distance between the energy dissipation drainage culvert structure and the dike body berm is less than or equal to 0.5m, the upper part earth is very thin (the thickness of the upper part earth is about 0.1-0.2 m), the structure is simple, and the inspection and the maintenance in the normal operation period are convenient.
Drawings
Fig. 1 is a schematic view of the whole drainage structure of the cable trench of the embankment project.
Figure 2 is a perspective view of the energy-dissipating drainage culvert in the invention.
Figure 3 is a top view of the energy-dissipating drainage culvert structure in the present invention.
Fig. 4 is a plan view of a trash rack of the present invention.
In fig. 3, a represents a diffusion angle, i.e., an included angle between two symmetrically arranged side walls; b represents the symmetry axis of the energy dissipation drainage culvert.
In the figure, 1-a drainage outlet plate, 2-an energy dissipation ridge, 3-an energy dissipation pool, 4-an energy dissipation drainage culvert water inlet pipe, 5-a top plate, 6-a side wall, 7-an embankment peak platform, 8-a drainage connecting pipe, 9-an embankment slope, 10-an embankment body filling, 11-a cable trench water outlet pipe, 12-a water seepage well, 13-a cable trench, 14-a sidewalk, 15-an energy dissipation drainage culvert, 16-a bent pipe, 17-a connecting plate, 18-a back wall, 19-a sewage blocking grid and 20-a sewage blocking grid hook are arranged.
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings, which are not intended to limit the present invention, but are merely exemplary. While the advantages of the invention will be clear and readily understood by the description.
It is to be noted that the methods described in the following embodiments are, unless otherwise specified, conventional methods, and the materials described therein are, unless otherwise specified, commercially available; in the description of the present invention, the terms "lateral", "longitudinal", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not imply that the components are required to be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present application, it is further noted that, unless expressly stated or limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the connection can be mechanical connection or fixed connection; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
The anti-impact and energy dissipation principle of the invention is as follows: the drainage water flow enters an energy dissipation drainage culvert, a larger flow area is obtained, and the water flow speed is effectively reduced; the flow state of the water flow is effectively optimized through the conversion from pressure flow to no pressure flow; the flow energy of water is weakened through the energy dissipation ridges, and the flow velocity is further reduced; the concentrated water flow is dispersed through the splayed bell mouth shape (namely the energy dissipation drainage culvert in the invention); when the water flows to the dike slope and the berm, the washing influence of the water flow is basically eliminated.
With reference to the accompanying drawings: an embankment-road integrated engineering cable trench drainage structure comprises an energy dissipation drainage culvert water inlet pipe 4, a drainage connecting pipe 8, a cable trench water outlet pipe 11 and an energy dissipation drainage culvert 15; the drainage connecting pipe 8 is positioned below the side of the cable trench water outlet pipe 11 and above the side of the energy dissipation drainage culvert water inlet pipe 4;
one end of the drainage connecting pipe 8 is communicated with the water outlet pipe 11 of the cable trench, and the other end of the drainage connecting pipe is communicated with the energy dissipation drainage culvert water inlet pipe 4; the drainage connecting pipe 8 is communicated with the water seepage well 12 through a cable trench water outlet pipe 11 and is communicated with the energy dissipation drainage culvert 15 through an energy dissipation drainage culvert water inlet pipe 4, so that water flow in an upstream cable trench 13 and the water seepage well 12 is guided to the downstream energy dissipation drainage culvert 15, the purpose of energy dissipation and buffering is achieved through a lower manufacturing cost and a smaller structure, and the scouring influence of the water flow of the cable trench 13 in the process on an embankment slope is reduced;
the energy dissipation drainage culvert water inlet pipe 4 is anchored on the side wall of the energy dissipation drainage culvert 15, and the energy dissipation drainage culvert water inlet pipe 4 is communicated with the energy dissipation drainage culvert 15 and used for introducing water flow in the drainage connecting pipe 8 into the energy dissipation drainage culvert 15 so as to achieve the purpose of energy dissipation and buffering;
the energy dissipation drainage culvert 15 is positioned above the dike hip platform 7 and embedded in the dike slope 9, and is embedded in the dike slope filling, so that the ecological landscape of the dike slope is hardly influenced, and the landscape effect is obviously better than that of a concrete drainage ditch; the height between the energy dissipation drainage culvert 15 and the dike prop platform 7 is less than or equal to 0.5m, and the energy dissipation drainage culvert 15 is close to the prop platform, so that the inspection and the maintenance in the normal operation period are facilitated;
the energy dissipation drainage culvert 15 is of a hollow structure with one open end; the concentrated water flow is dispersed through the splayed bell mouth shape of the energy dissipation drainage culvert 15; when water flows to the dike slope and the berm, the washing influence of the water flow is basically eliminated; the energy dissipation drainage culvert has a simple structure, can be prefabricated in advance, is simple and convenient to construct on site, and is beneficial to shortening the construction period;
the energy dissipation drainage culvert 15 is of a symmetrical structure, and the symmetry axis is the water flow direction; the optimization of the flow state of water flow is facilitated, and the prefabricated model is convenient to manufacture;
the sidewalk 14 is arranged on the downstream side of the embankment top, and the cable trench 13 is arranged below the sidewalk 14 on the downstream side of the embankment top;
the water seepage well 12 is connected with the lower end of the cable trench 13;
the cable trench outlet pipe 11 is connected to the lower end of the side of the water seepage well 12 (as shown in fig. 1) to guide water to the drainage connecting pipe 8 by gravity flow.
Furthermore, the upper part of the top plate 5, the drainage outlet plate 1 and the lower part of the energy dissipation pool 3 are filled with soil 10 of the dike body, the upper part of the top plate 5 is very thin in soil covering, the structure is simple, and the inspection and the maintenance in the normal operation period are facilitated.
Further, the energy dissipation drainage culvert 15 comprises a drainage outlet plate 1, an energy dissipation ridge 2, an energy dissipation pool 3, a top plate 5, a side wall 6, a connecting plate 17 and a back wall 18;
the top plate 5 is positioned above the energy dissipation pool 3 and above the side of the drainage outlet plate 1;
the side edges of the drainage outlet plate 1, the energy dissipation ridge 2, the energy dissipation pool 3, the top plate 5, the connecting plate 17 and the back wall 18 are connected through the side wall 6;
the water inlet end of the energy dissipation pool 3 is connected with the connecting plate 17, and the water outlet end of the energy dissipation pool is vertically connected with the energy dissipation ridge 2;
the upper end of the back wall 18 is vertically connected with the top plate 5, and the lower end of the back wall is vertically connected with the connecting plate 17; the upper end of the energy dissipation ridge 2 is connected with the drainage outlet plate 1;
the drainage outlet plate 1, the energy dissipation ridge 2, the energy dissipation pool 3, the top plate 5, the side wall 6, the connecting plate 17 and the back wall 18 form a hollow open type trapezoidal structure, namely the energy dissipation drainage culvert 15 (shown in figures 1, 2 and 3), and the energy dissipation drainage culvert 15 is a hollow open type trapezoidal structure, so that the water flow area can be effectively increased, the flow speed is reduced, the water flow condition is optimized, and the energy dissipation effect is enhanced.
Furthermore, the energy dissipation ridge 2 is a vertical ridge wall and is used for dissipating energy of water flow; the energy dissipation pool 3 is a flat bottom plate; the length of the flat bottom plate is not less than 40cm, the water outlet flow state of the energy dissipation drainage culvert water inlet pipe 4 is relatively disordered, and the disordered flow state can be stabilized through the flat bottom plate energy dissipation pool 3 in a diffusion shape.
The energy dissipation drainage culvert water inlet pipe 4 is arranged on the back wall 18 and is communicated with the energy dissipation pool 3 through a connecting plate (as shown in figures 1 and 2), and the energy dissipation drainage culvert water inlet pipe 4 is communicated with the energy dissipation pool 3 and is used for introducing water flow in the drainage connecting pipe 8 into the energy dissipation pool 3 so as to achieve the purpose of energy dissipation and buffering; the energy dissipation drainage culvert water inlet pipe 4 can be integrally poured with the energy dissipation drainage culvert 15, can be prefabricated in advance, is simple and convenient to construct on site, and is beneficial to shortening the construction period.
Furthermore, the energy dissipation drainage culvert water inlet pipe 4 is in a round pipe shape and is made of an anticorrosive steel pipe, so that the corrosion resistance of the energy dissipation drainage culvert water inlet pipe 4 is improved, and the sewage is prevented from corroding the energy dissipation drainage culvert water inlet pipe 4;
the drainage connecting pipe 8 is a circular drainage pipe, can be a PVC pipe, a PE pipe or an anticorrosive steel pipe, and has replaceability, maintainability and corrosion resistance;
the cable trench water outlet pipe 11 is in a round pipe shape and is an anticorrosive steel pipe, and the cable trench water outlet pipe 11 is an anticorrosive steel pipe, so that the corrosion resistance of the cable trench water outlet pipe 11 is improved, and the cable trench water outlet pipe 11 is prevented from being corroded by sewage; and a cable trench water outlet pipe 11 is used for communicating the water seepage well 12 with the drainage connecting pipe 8.
Furthermore, the energy dissipation drainage culvert 15 is of an integrated pouring structure made of reinforced concrete or steel fiber concrete, and the energy dissipation drainage culvert 15 can be prefabricated in advance, so that the site construction is convenient, and the construction period is favorably shortened.
Furthermore, the cable trench water outlet pipe 11 and the drainage connecting pipe 8 are arranged to form a certain oblique angle, the drainage connecting pipe 8 is connected with the cable trench water outlet pipe 11 through a bent pipe 16 and connected with the energy dissipation drainage culvert water inlet pipe 4 through a bent pipe 16 (as shown in fig. 1), and the material of the bent pipe 16 is consistent with that of the drainage connecting pipe 8; the invention is convenient for field installation and later maintenance, and can also ensure the stability of the connection structure of the invention;
the cable trench water outlet pipe 11 is anchored at the lower end of the side of the water seepage well 12, and the structure is guaranteed to be stable.
Further, a trash rack 19 is arranged at the opening end of the energy dissipation drainage culvert 15, and the trash rack 19 is arranged on the side edges of the drainage outlet plate 1, the top plate 5 and the side wall 6; the trash rack hook 20 is connected with the top plate 5 and anchored above the top plate 5; the trash rack 19 is connected with a trash rack hook 20 positioned above the trash rack to prevent external sundries from entering the inside of the energy dissipation drainage culvert; the trash rack 19 is made of steel wire meshes, and the distance between every two steel wire meshes is 2-5 cm.
The trash rack hook 20 is a round and straight steel bar, and the diameter of the steel bar is larger than or equal to 12 mm. When the energy dissipation and drainage culvert 15 is manufactured, the trash rack hooks 20 are embedded in the top plate 5, and the embedding depth is more than or equal to 5 cm.
With reference to the accompanying drawings: the drainage method of the cable trench drainage structure of the embankment-in-one engineering comprises the following steps,
the method comprises the following steps: the water flow enters the cable trench 13 through the sidewalk 14 and then flows into the water seepage well 12;
step two: the water flow flowing into the seepage well 12 sequentially passes through the cable trench water outlet pipe 11, the drainage connecting pipe 8, the energy dissipation drainage culvert water inlet pipe 4, the energy dissipation pool 3, the energy dissipation ridge 2 and the drainage outlet plate 1 and flows to the dike embankment peak platform 7;
step three: and (4) repeating the first step to the second step until the drainage of the accumulated water in the drainage ditch is finished (as shown in figures 1 and 2).
In order to more clearly illustrate the advantages of the embankment-in-one engineering cable trench drainage structure and the drainage method thereof in comparison with the prior art, the two technical schemes are compared by workers, and the comparison results are as follows:
as can be seen from the above table, compared with the prior art, the embankment-in-one engineering cable trench drainage structure and the drainage method thereof of the invention have the advantages of low cost, energy dissipation and buffering by using a smaller structure, good landscape effect by structural treatment, drainage on a slope body after water flow energy dissipation, low cost and no need of additional land occupation.
Examples
The invention will be described in detail by taking the embodiment of the invention applied to the slope drainage of a newly-built embankment-integrated engineering cable trench as an example, and has the guiding function on the slope drainage of other embankment engineering cable trenches applied to the invention.
The brief introduction of a new embankment integrated project is as follows:
in a newly-built embankment integrated project, the flood control standard is met for 50 years, the embankment grade is 3 grades, the slope ratio of an embankment body slope is 1:3, a first-grade prop platform is arranged, the height of the prop platform is 3.0m from the height of an embankment top, the width of the prop platform is 3m, the embankment top is an urban trunk road, the width of the embankment top is 22m, a bidirectional 4-way lane is arranged, the total width of a motor-driven lane is 16m, two sides of the motor-driven lane are man-ways, the single width of the motor-driven lane is 3m, a cable trench is arranged below the man-way on. In order to ensure the safe operation of the cable trench, accumulated water in the cable trench needs to be drained to a side slope on the back water side.
In this embodiment, a drainage structure for a cable trench of a newly-built embankment-in-one engineering includes: the energy dissipation drainage culvert comprises a cable trench water outlet pipe 11, a drainage connecting pipe 8, an energy dissipation drainage culvert water inlet pipe 4 and an energy dissipation drainage culvert 15 (the energy dissipation drainage culvert 15 is of a combined structure, the energy dissipation drainage culvert 15 comprises a drainage outlet plate 1, an energy dissipation ridge 2, an energy dissipation pool 3, a top plate 5, a side wall 6, a connecting plate 17 and a back wall 18, and the overall drainage structure of the embodiment is formed by connecting the cable trench water outlet pipe 11, the drainage connecting pipe 8, the energy dissipation drainage culvert water inlet pipe 4, the energy dissipation pool 3, the energy dissipation ridge 2 and the drainage outlet plate 1 in sequence along the water flow direction (as shown in figures 1 and 2).
In the embodiment, a newly-built embankment-combined engineering height H is provided, a primary dike platform is arranged, the slope ratio of an embankment is 1: 2-1: 3, a sidewalk 14 is arranged on the side close to the backwater side of an embankment top, and a cable trench 13 is arranged below the sidewalk 14 and is arranged horizontally. The water outlet pipe 11 of the cable trench is an anticorrosive steel pipe and is connected with the cable trench 13 through a water collecting well 12, and the water outlet 11 of the cable trench is horizontally arranged and is vertical to the axis of the dyke.
The drainage connecting pipe 8 is arranged perpendicular to the axis of the dike, in the direction of the dike slope, and downward to the left. The drainage connecting pipe 8 is respectively connected with the water outlet pipe 11 of the cable trench at the upper right and the water inlet pipe 4 of the energy dissipation drainage culvert at the lower left through a bent pipe 16.
In order to enhance the stress performance of the energy dissipation drainage culvert 15, in the embodiment, the top plate 5, the energy dissipation sill 2 and the energy dissipation pool 3 in the energy dissipation drainage culvert 15 are of a reinforced concrete structure, the diameter of a stress bar of the reinforced concrete structure is 12mm, the steel bar standard HRB400 is adopted, the energy dissipation sill 2 is arranged perpendicular to the water flow direction, and the concrete strength grade is C30. The energy dissipation drainage culvert water inlet pipe 4 adopts a phi 150 anticorrosive steel pipe. The energy dissipation drainage culvert water inlet pipe 4 is connected with the energy dissipation drainage culvert 15 in a consolidation mode, and the integral prefabricated product is formed by pouring the materials simultaneously.
The energy dissipation drainage culvert 15 is of a diffusion type integrated structure and comprises an energy dissipation pool 3, an energy dissipation ridge 2, a drainage outlet plate 1, a top plate 5, side walls 6, a connecting plate 17 and a back wall 18; the energy dissipation pool 3, the drainage outlet plate 1 and the top plate 5 are diffusion-shaped trapezoidal flat plates, and the energy dissipation pool 3, the drainage outlet plate 1 and the top plate 5 are horizontally arranged; the energy dissipation ridge 2 is a vertical ridge wall and is perpendicular to the water flow direction; the energy dissipation drainage culvert 15 is of a symmetrical structure, and in a specific arrangement, the symmetry axis of the energy dissipation drainage culvert 15 is perpendicular to the axis of the dike (as shown in fig. 1, 2 and 3).
The included angle between the two symmetrically arranged side walls 6 is a diffusion angle a (as shown in fig. 3), and in order to ensure the water flow diffusion effect, the diffusion angle between the two side walls 6 is 30-90 degrees, in this embodiment, the diffusion angle is set to 38 degrees, taking the diffusion effect and the size of the efficiency pool into consideration.
The side wall 6 highly is the difference in height between roof 5 and the drainage export board 1, and for guaranteeing that energy dissipation drainage culvert inlet tube 4 department structure atress is stable, the side wall 6 highly is more than or equal to 1.5 times of inlet tube 4 diameter, and this embodiment adopts side wall 6 highly to be 2 times of inlet tube 4 diameter. The side wall 6 near the exit is a slope, the slope of which is consistent with the slope ratio of the embankment slope, and the slope of the embankment slope is 1:3 at the side wall 6 near the exit.
The energy dissipation bank 2 height of vertical type and energy dissipation pond 3 are great to the energy dissipation effect along water flow direction length, and the energy dissipation bank 2 height that this embodiment set up is greater than or equal to 10cm, and energy dissipation pond 3 is greater than or equal to 40cm along water flow direction length, and this embodiment adopts the low value.
The embodiment comprises an actual field construction process, takes the dike filling, rolling, energy dissipation drainage culvert 15 arrangement, drainage connecting pipe 8 arrangement and cable trench 13 into consideration, reasonably arranges the construction sequence, not only satisfies the dike body rolling compaction, but also ensures the drainage structure to be smoothly implemented. In the embodiment, firstly considering that the embankment body is rolled to the bottom elevation of the energy dissipation pool 3, the C10 concrete cushion layer is adopted to reinforce the foundation soil of the energy dissipation drainage culvert 15 at the elevation, then the prefabricated energy dissipation drainage culvert 15 is arranged at the preset position, the drainage connecting pipe 8 is erected after the energy dissipation drainage culvert 15 is stably arranged, then the embankment body on the upper layer is continuously rolled, the erection angle of the drainage connecting pipe 8 is continuously adjusted to ensure the construction precision, a small-sized manual rolling machine is adopted when the embankment body is rolled to the position close to the drainage connecting pipe 8, the cable trench 13 is excavated after the embankment body is rolled to the top, the position of the drainage connecting pipe 8 is rechecked, and if. After the concrete pouring of the cable trench 13 is completed, the drainage connecting pipe 8 is connected to the cable trench water collecting well 12, and backfilling and compacting are carried out.
In practical engineering application, the pipe diameter of the drainage connecting pipe 8 in the embodiment is greater than or equal to 100mm, steel pipes are preferably adopted to increase strength, the concrete strength of the energy dissipation drainage culvert is greater than or equal to C30, the anti-freezing grade is met in a region with lower temperature, and the thicknesses of the drainage outlet plate 1, the energy dissipation ridge 2, the energy dissipation pool 3, the top plate 5, the side wall 6, the connecting plate 17 and the back wall 18 are greater than or equal to 10 cm.
And (4) conclusion: according to the embodiment, through the drainage structure, drainage water flow enters the energy dissipation drainage culvert, a larger flow area is obtained, and the water flow speed is effectively reduced; the flow state of the water flow is effectively optimized through the conversion from pressure flow to no pressure flow; the flow energy of water is weakened through the energy dissipation ridges, and the flow velocity is further reduced; the concentrated water flow is dispersed through the splayed bell mouth shape; when the water flows to the dike slope and the berm, the washing influence of the water flow is basically eliminated.
Other parts not described belong to the prior art.
Claims (8)
1. The utility model provides an embankment unification engineering cable pit drainage structures which characterized in that: comprises an energy dissipation drainage culvert water inlet pipe (4), a drainage connecting pipe (8), a cable trench water outlet pipe (11) and an energy dissipation drainage culvert (15); the drainage connecting pipe (8) is positioned below the side of the water outlet pipe (11) of the cable trench and above the side of the water inlet pipe (4) of the energy dissipation drainage culvert;
one end of the drainage connecting pipe (8) is communicated with the cable trench water outlet pipe (11), and the other end of the drainage connecting pipe is communicated with the energy dissipation drainage culvert water inlet pipe (4);
the energy dissipation drainage culvert water inlet pipe (4) is anchored on the side wall of the energy dissipation drainage culvert (15);
the energy dissipation drainage culvert (15) is positioned above the dike hip platform (7) side and is embedded in the dike slope (9); the height between the energy dissipation drainage culvert (15) and the dike hip platform (7) is less than or equal to 0.5 m;
the energy dissipation drainage culvert (15) is of a hollow structure with one open end;
the cable trench (13) is arranged below a sidewalk (14) on the downstream side of the embankment top;
the water seepage well (12) is connected with the lower end of the cable trench (13);
and the water outlet pipe (11) of the cable trench is connected to the lower end of the side of the water seepage well (12).
2. The embankment-on-one engineering cable trench drainage structure according to claim 1, wherein: the energy dissipation drainage culvert (15) comprises a drainage outlet plate (1), an energy dissipation ridge (2), an energy dissipation pool (3), a top plate (5), side walls (6), a connecting plate (17) and a back wall (18);
the top plate (5) is positioned above the energy dissipation pool (3) and above the side of the drainage outlet plate (1);
the side edges of the drainage outlet plate (1), the energy dissipation ridge (2), the energy dissipation pool (3), the top plate (5), the connecting plate (17) and the back wall (18) are connected through the side wall (6);
the water inlet end of the energy dissipation pool (3) is connected with the connecting plate (17), and the water outlet end of the energy dissipation pool is vertically connected with the energy dissipation ridge (2);
the upper end of the back wall (18) is vertically connected with the top plate (5), and the lower end of the back wall is vertically connected with the connecting plate (17); the upper end of the energy dissipation ridge (2) is connected with the drainage outlet plate (1);
the drainage outlet plate (1), the energy dissipation ridge (2), the energy dissipation pool (3), the top plate (5), the side wall (6), the connecting plate (17) and the back wall (18) form a hollow open type trapezoid structure in a surrounding mode.
3. The embankment-on-one engineering cable trench drainage structure according to claim 2, wherein: the energy dissipation ridge (2) is a vertical ridge wall;
the energy dissipation pool (3) is a flat bottom plate;
the energy dissipation drainage culvert water inlet pipe (4) is arranged on the back wall (18) and is communicated with the energy dissipation pool (3).
4. The embankment-on-one engineering cable trench drainage structure according to claim 3, wherein: the energy dissipation drainage culvert water inlet pipe (4) is in a round pipe shape and is an anti-corrosion steel pipe;
the drainage connecting pipe (8) is a PVC drainage pipe or a PE pipe or an anticorrosive steel pipe;
the cable trench water outlet pipe (11) is in a circular pipe shape and is an anti-corrosion steel pipe.
5. The embankment-on-one engineering cable trench drainage structure according to claim 4, wherein: the energy dissipation drainage culvert (15) is of an integrated pouring structure made of reinforced concrete or steel fiber concrete.
6. The embankment-on-one engineering cable trench drainage structure according to claim 5, wherein: the drainage connecting pipe (8) is connected with the cable trench water outlet pipe (11) through a bent pipe (16) and is connected with the energy dissipation drainage culvert water inlet pipe (4) through the bent pipe (16);
and the water outlet pipe (11) of the cable trench is anchored at the lower end of the side of the water seepage well (12).
7. The embankment-on-one engineering cable trench drainage structure according to claim 6, wherein: a trash rack (19) is arranged at the opening end of the energy dissipation drainage culvert (15).
8. The method for draining a levee-integrated engineering cable trench drainage structure according to any one of claims 1 to 7, wherein: comprises the following steps of (a) carrying out,
the method comprises the following steps: the water flow enters the cable trench (13) through the sidewalk (14) and then flows into the seepage well (12);
step two: the water flow flowing into the seepage well (12) sequentially passes through a cable trench water outlet pipe (11), a drainage connecting pipe (8), an energy dissipation drainage culvert water inlet pipe (4), an energy dissipation pool (3), an energy dissipation sill (2) and a drainage outlet plate (1) and flows to an embankment prop platform (7);
step three: and repeating the first step to the second step until the drainage of the accumulated water in the cable trench is completed.
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