CN212896774U - Rainwater collecting device for viaduct - Google Patents

Abstract

The utility model relates to a rainwater collection device of overpass, its characterized in that: the device comprises a reservoir, wherein the reservoir is connected with a pipeline of a rain drop pipe on a viaduct; the irrigation pipes are distributed below the corresponding soil in the greening area below the viaduct bridge, and the pipe wall of each irrigation pipe is provided with at least two rows of irrigation holes; the water seepage surface layer is laid in the water storage tank and is used for improving the quality of rainwater discharged from the water outlet of the rainwater falling pipe; and the power piece that disappears of setting in the position that the cistern corresponds the delivery port of rain drop pipe, compare with prior art, the utility model has the advantages of an overhead rainwater in city is collected, is utilized device, include the disconnected joint to overhead rainwater rain drop pipe, utilize the power piece that disappears under the bridge to cushion, recycle the cistern and deposit, the rainwater that will deposit is through irrigating the pipe to plant roots layer moisturizing to reduce conventional afforestation watering number of times, also make full use of rainwater carries out the moisturizing to afforestation plant under the overhead bridge.

Description

Rainwater collecting device for viaduct

Technical Field

The utility model relates to an urban rainwater handles technical field, especially relates to a rainwater collection device of overpass.

Background

In urban road construction, in order to relieve traffic congestion, viaducts are generally adopted, along with the development of urban construction, more and more viaducts are arranged in cities, rainwater on the viaducts generally directly flows into an urban pipe network, so that waste of water resources is caused, green belts are generally planted under the viaducts, a large amount of water is needed for maintaining the green belts, and the green belts are positioned under the viaducts and cannot be watered even in rainy days, so that the green belts under the viaducts are watered completely by manpower, a large amount of fresh water resources are consumed, the labor cost is high, if the rainwater enters the ground through a raindrop pipe for watering, the scouring force of the rainwater is high, and water and soil loss can be caused when the rainwater is directly used for greening and watering; the pollutants carried by the initial rainwater can cause certain growth obstacles for plants and can not uniformly irrigate the under-bridge greening. There is therefore a need for a device that facilitates the handling, buffering, settling of initial rain water and the even watering of plants.

To solve the above problems, a chinese utility model patent No. ZL201820127287.8 (publication No. CN208088464U) discloses an ecological rainwater collecting device comprising a header tank, wherein the header tank comprises a clean water tank and a decomposition anaerobic sedimentation tank separated by a dirt-blocking collecting device in the header tank, the clean water tank and the decomposition anaerobic sedimentation tank are both provided with a drain hole communicating with the outside, a water collecting pipe on one side of the header tank is communicated with a dirt-blocking collecting tank, the other side of the header tank opposite to the water collecting pipe is provided with an overflow pipe, a third side of the header tank is provided with a drainage device communicating with the clean water tank, by adopting the above structure, rainwater on an overpass can be collected and stored in the clean water tank after secondary filtration by the dirt-blocking collecting device, so as to be used during late stage irrigation, not only can effectively solve urban drainage pressure caused by rainwater on the overpass directly entering into urban rainwater pipelines, although the collected rainwater can be used for irrigating green belts under bridges, fresh water resources are saved, government financial expenditure is saved, and road traffic is not affected during irrigation, the ecological rainwater collection device has the following two defects: 1. the water collecting tank is exposed under the viaduct and directly falls on the ground, and secondary appearance decoration is needed from the perspective of landscape effect; 2. the drainage device of the rainwater collection device adopts a drip irrigation mode of a rainwater dropper to carry out drip irrigation on plants, namely water slowly permeates into plant root systems through soil, insufficient water supplement of the root systems caused by soil hardening can be caused, so that the plants grow badly or the irrigation times need to be increased, and further improvement is needed for the purpose.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that a rainwater collection device of overpass that can directly supply water to plant roots layer is provided to above-mentioned prior art current situation.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: this overpass's rainwater collection device, its characterized in that: comprises the following steps:

the water storage tank is connected with a pipeline of a rain drop pipe on the viaduct;

the irrigation pipes are distributed below the corresponding soil in the greening area below the viaduct bridge, and the pipe wall of each irrigation pipe is provided with at least two rows of irrigation holes;

the water seepage surface layer is paved in the water storage tank and is used for improving the quality of rainwater discharged from the water outlet of the rainwater falling pipe; and

the force dissipation part is arranged at the position, corresponding to the water outlet of the rain drop pipe, of the water storage tank and is arranged above the water seepage surface layer.

In view of simple structure and good landscape effect, the force-dissipating member is preferably formed by stacking at least two pebbles with the particle size of 300-400 mm.

Furthermore, the infiltration top layer includes overburden, percolation layer and the precipitate layer that top-down laid in proper order.

Further, the cover layer is constituted by a lawn; the infiltration layer is composed of permeable geotextile; the sedimentation layer is composed of pebbles with the particle size of 60-80 mm. Rainwater gets into the cistern through the rain fall pipe and cushions, deposits, and top-down utilizes the overburden to carry out the separation to rubbish earlier, then just allows the infiltration of rainwater and the separation rubbish through the geotechnological cloth that permeates water of infiltration layer, cushions, deposits the initial stage rainwater through the adsorption of the cobble itself to harmful substance of depositing the layer at last, and the rainwater that will deposit carries out the moisturizing through irrigation pipe to the plant roots layer under the soil.

In order to better utilize rainwater to replenish water to the plant root system, preferably, the paving thickness of the pebbles of the settling layer is 200-250 mm. And pebbles on the lower sedimentation layer of the viaduct are utilized for buffering and sedimentation, and the settled rainwater is used for replenishing water to the plant root layer below the soil through the irrigation pipe.

Furthermore, an overflow well is arranged in the reservoir, and at least part of the overflow well is higher than the water seepage surface layer of the reservoir. Set up the overflow well in the cistern, reach the take the altitude when the water level, flow out through the overflow well and get into municipal rainwater pipe network, ensure water safety.

In order to further ensure uniform rainwater moisture distribution, the outer surface of the irrigation pipe is preferably wrapped with a water-permeable geotextile. When the irrigation pipe is buried in soil for replenishing water to the root system of the plant, fine sand is uniformly paved on the periphery of the irrigation pipe wrapped with the water-permeable geotextile, so that the uniform water distribution is facilitated.

Compared with the prior art, the utility model has the advantages of a device that urban overhead rainwater was collected, was utilized, include the disconnected joint to overhead rainwater downpipe, utilize the piece that disappears to cushion under the bridge, weaken the scouring force that falls into the cistern from downpipe exhaust rainwater, recycle the cistern and deposit, the rainwater that will deposit is through irrigating the moisturizing of pipe to plant root system layer, thereby reduce conventional afforestation watering number of times, also make full use of rainwater carries out the moisturizing to the afforestation plant under the urban overhead bridge, it is not good to avoid the afforestation plant to grow because of the lack of water, fully utilize the collection of urban overhead rainwater, still have better view effect when can satisfy evenly watering to the afforestation plant.

Drawings

Fig. 1 is a structural section view of a rainwater collecting device of a viaduct in an embodiment of the present invention;

fig. 2 is a structural section view of another angle of the rainwater collecting device for the viaduct in the embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 and 2, is a preferred embodiment of the present invention. The rainwater collecting device for the viaduct comprises a reservoir 1, wherein the reservoir 1 is connected with a pipeline of a rainwater falling pipe 2 on the viaduct; the irrigation pipes 3 distributed under the corresponding soil in the greening area under the viaduct bridge, and the pipe wall of the irrigation pipes 3 is provided with at least two rows of irrigation holes (not shown in the figure), in order to further ensure the rainwater moisture to be uniformly dispersed, preferably, the outer surface of the irrigation pipes 3 is wrapped with permeable geotextile, the rainwater collection device also comprises a water seepage surface layer which is laid in the reservoir 1 and is used for improving the quality of the rainwater discharged through the water outlet of the raindrop pipe 2, and a force dissipation member 4 which is arranged at the position of the reservoir 1 corresponding to the water outlet of the raindrop pipe 2, the force dissipation member 4 is arranged on the water seepage surface layer, the device for collecting and utilizing the urban overhead rainwater comprises the disconnection of the overhead rainwater drop pipe 2, the force dissipation member 4 under the bridge is used for buffering, the scouring force of the rainwater discharged from the raindrop pipe 2 falling into the reservoir 1 is weakened, and then the reservoir 1 is used for sedimentation, the rainwater that will deposit is passed through irrigation pipe 3 and is supplied water to plant roots layer to reduce conventional afforestation watering number of times, also make full use of rainwater carries out the moisturizing to afforestation plant under the urban viaduct, avoid afforestation plant to grow well because of the lack of water, fully utilize the collection of urban viaduct rainwater, still have better view effect when can satisfy evenly watering afforestation plant.

Specifically, the force dissipation member 4 is designed from the perspective of simple structure, the force dissipation member 4 comprises at least two pebbles with the particle size of 300-400 mm, and the pebbles with the particle size of 300-400 mm are stacked, and have a good landscape effect. The water seepage surface layer comprises a covering layer 5, a percolation layer 6 and a precipitation layer 7 which are sequentially paved from top to bottom, the covering layer 5 is composed of a lawn, the percolation layer 6 is composed of permeable geotextile, and the precipitation layer 7 is composed of pebbles with the particle size of 60-80 mm. Rainwater gets into cistern 1 through raining drop pipe 2 and cushions, deposits, and top-down utilizes overburden 5 to carry out the separation to rubbish earlier, then just allows the infiltration of rainwater and the separation rubbish through the geotechnological cloth that permeates water of infiltration layer 6, and the cobble itself through settling layer 7 cushions, deposits the initial stage rainwater through the adsorption of harmful substance, and the rainwater that will deposit carries out the moisturizing to the plant roots layer under the soil through irrigation pipe 3 at last. In order to utilize the rainwater to carry out the moisturizing to plant roots better, the thickness of laying of the cobble of settling layer 7 is 200 ~ 250mm, utilize the cobble of settling layer 7 under the viaduct to cushion, deposit, the rainwater that will deposit is through irrigating pipe 3 to carry out the moisturizing to the plant roots layer under the soil, and still be provided with overflow well 8 in the cistern 1, overflow well 8 is the infiltration top layer that goes out cistern 1 at least locally, set up overflow well 8 in cistern 1, reach the take the altitude when the water level, flow through overflow well 8 and get into municipal rainwater pipe network, ensure water safety. And finally, in order to ensure that rainwater moisture is uniformly dispersed, the outer surface of the irrigation pipe 3 is wrapped with permeable geotextile. When the irrigation pipe 3 is buried in the soil for replenishing water to the plant root system, fine sand is uniformly laid on the periphery of the irrigation pipe 3 wrapped with the water-permeable geotextile, so that the uniform dispersion of water is facilitated.

To sum up, the rainwater collection device of the overpass of this embodiment makes the overpass rainwater get into reservoir 1 under the bridge through the rain fall pipe 2 and cushion, deposit, and evenly supply the plant roots moisture under the bridge with the rainwater through irrigation pipe 3, thereby reduce conventional afforestation watering number of times, save the cost, also fully collect and utilize the overpass rainwater simultaneously, and because can cover through the lawn of afforestation plant and overburden around the reservoir 1, can "hide" in the afforestation plant, better view effect has.

Claims (7)

1. The utility model provides a rainwater collection device of overpass which characterized in that: comprises the following steps:

the water storage tank (1), the water storage tank (1) is connected with the pipeline of the rain drop pipe (2) on the viaduct;

the irrigation pipes (3) are distributed below corresponding soil in a greening area below the viaduct bridge, and the pipe wall of each irrigation pipe (3) is provided with at least two rows of irrigation holes;

the water seepage surface layer is paved in the reservoir (1) and is used for improving the quality of rainwater discharged from the water outlet of the rainwater falling pipe (2); and

the force dissipation part (4) is arranged at the position, corresponding to the water outlet of the rain drop pipe (2), of the water storage pool (1) and is arranged on the water seepage surface layer.

2. The rainwater collecting apparatus for viaduct of claim 1, wherein: the force eliminating piece (4) is formed by stacking at least two pebbles with the grain diameter of 300-400 mm.

3. The viaduct rainwater collecting apparatus according to claim 2, wherein: the water seepage surface layer comprises a covering layer (5), a percolation layer (6) and a precipitation layer (7) which are sequentially paved from top to bottom.

4. The viaduct rainwater collecting apparatus according to claim 3, wherein: the covering layer (5) is composed of a lawn, the infiltration layer (6) is composed of permeable geotextile, and the sedimentation layer (7) is composed of pebbles with the particle size of 60-80 mm.

5. The viaduct rainwater collecting apparatus according to claim 4, wherein: the paving thickness of the pebbles of the settling layer (7) is 200-250 mm.

6. The viaduct rainwater collection apparatus according to claim 3, 4 or 5, wherein: still be provided with overflow well (8) in cistern (1), overflow well (8) are higher than at least local the infiltration top layer of cistern (1).

7. The viaduct rainwater collecting apparatus according to claim 6, wherein: the outer surface of the irrigation pipe (3) is wrapped with a permeable geotextile.

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