CN210216633U - Sponge type road side branch area biological detention area rainwater collection system - Google Patents
Sponge type road side branch area biological detention area rainwater collection system Download PDFInfo
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- CN210216633U CN210216633U CN201920480088.XU CN201920480088U CN210216633U CN 210216633 U CN210216633 U CN 210216633U CN 201920480088 U CN201920480088 U CN 201920480088U CN 210216633 U CN210216633 U CN 210216633U
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Abstract
A sponge type road side zone biological retention zone rainwater collection system comprises a side zone, and a biological retention zone, a street lamp foundation, a street lamp line inspection well, an overflow type rainwater port, a signboard foundation, a curb and a street tree which are arranged in the side zone; the biological detention zone standard section comprises a water storage layer, a planting soil layer, a sandy soil filtering layer, a permeable geotextile, a gravel layer and a impermeable geotextile which are arranged from top to bottom; when the roads on the two sides do not allow water seepage, the waterproof geotextile fully wraps the bottom and the two sides of the standard section of the bioretention belt, and seepage pipes are arranged; when the road on one side is not permeable to water, the impermeable geotextile wraps the side of the standard section of the bioretention strip and extends to the bottom, and the length is 1/3 the bottom width. The utility model discloses full play sponge road biological detention area infiltration retaining function can realize the dual management and control of rainwater water yield and quality of water, has both alleviateed municipal drainage pipe's drainage pressure, realizes the collection utilization of rainwater again.
Description
Technical Field
The utility model belongs to the fixed building field relates to biological detention area in sponge city, especially relates to a biological detention of sponge type road side branch area takes rainwater collection system.
Background
The sponge city plays an important role in relieving urban inland inundation, reducing urban runoff pollution, saving water resources, protecting and improving urban ecological environment and the like. The construction of sponge cities comprises five aspects of water resources, water environments, water ecology, water safety, water culture and the like, and covers four major influences of buildings and districts, parks and squares, urban roads, water systems and the like on the development of rainwater systems. The road system is an important component of sponge city construction, the total amount of the rainwater runoff is mainly controlled in the form of permeable pavement, a bioretention zone, a concave green land, a gray water storage module and the like in the sponge construction, wherein the bioretention zone is an ecological green measure with the strongest water storage capacity and relatively few limiting conditions in the road.
At present, the practice in national standard is not in place, the investment is higher than that of the practice in non-sponge cities, so that the user acceptance is difficult, and simultaneously, the sponge effect cannot be achieved or surpassed, or phenomena such as waterlogging (or plant death in a biological retention zone) caused by unsmooth drainage, or conflict with road facilities and the like occur.
SUMMERY OF THE UTILITY MODEL
The utility model provides an above-mentioned problem, provide a sponge type road side branch area bioretention area rainwater collection system.
The purpose of the utility model can be realized by the following technical scheme: a sponge type road side zone biological retention zone rainwater collection system comprises a side zone, and a biological retention zone, a street lamp foundation, a street lamp line inspection well, an overflow type rainwater port, a signboard foundation, a curb and a street tree which are arranged in the side zone; both sides of the side sub-belt are provided with roadways, or one side of the side sub-belt is provided with a roadway and the other side is provided with a non-motor vehicle lane which is not allowed to seep water; green belts are arranged on the side branch belts and the two sides of the whole body of the roads on the two sides, and sponge facility belts with lower topography are arranged in the green belts; the bioretention belt is composed of more than one bioretention belt standard section, the length of each bioretention belt standard section is equal to the distance between two adjacent street lamp foundations, the bioretention belt standard section takes a street lamp foundation at the upstream of the two adjacent street lamp foundations along the longitudinal slope direction of the road as a starting point and takes a street lamp foundation at the downstream of the longitudinal slope direction of the road as an end point, and the top standard heights of the bioretention belt standard section at the starting point and the end point are respectively lower than the elevation of the road at the outer edge line of the road corresponding to the pile number; a corresponding street lamp line inspection well is arranged beside each street lamp foundation, and the top elevation of the street lamp foundation and the corresponding street lamp line inspection well is consistent with the elevation of the road at the outer edge line of the corresponding pile number road; an overflow type rainwater inlet is arranged near a street lamp foundation at the downstream of the road longitudinal slope direction in the standard section of the bioretention zone, the top elevation of the overflow type rainwater inlet is lower than the elevation of a road at the outer side line of a road corresponding to a pile number, and the overflow type rainwater inlet is connected to a municipal rainwater well through a rainwater inlet connecting pipe; kerbstones are arranged along the edges of two sides of the standard section of the bioretention belt, kerbstone openings are arranged on the kerbstones adjacent to the roadway at intervals, and gravels are paved at the corresponding kerbstone openings in the standard section of the bioretention belt; every biological detention area standard section includes water-storage layer, planting soil layer, sandy soil filter layer, the geotechnological cloth that permeates water, gravel layer, the waterproof geotechnological cloth that top-down set gradually, the bottom and the both sides of biological detention area standard section are wrapped up entirely to waterproof geotechnological cloth, biological detention area standard section still includes infiltration pipe and overflow pipe, infiltration pipe and overflow pipe set up in the gravel layer, and the infiltration pipe sets up and does not insert overflow formula inlet for stom water along road longitudinal slope direction, and the extending direction equipartition of infiltration pipe is followed to the overflow pipe more than two, and the overflow pipe sets up and extends to the lower sponge facility in-band of terrain in the greenbelt along road transverse slope direction.
Furthermore, the signboard base and the street lamp base are integrated into a whole; or the signboard foundation is arranged between two adjacent street lamp foundations, and another overflow type rainwater inlet is arranged at the position, close to the upstream of the road longitudinal slope of the corresponding signboard foundation of the biological retention zone standard section.
Specifically, the height of the top mark at the starting point of the standard section of the bioretention belt is 0.05m lower than the height of the road at the outer edge of the road corresponding to the pile number, and the height of the top mark at the end point of the standard section of the bioretention belt is 0.25m lower than the height of the road at the outer edge of the road corresponding to the pile number; the depth of the water storage layer is 0.05-0.2 m, the depth of the planting soil layer is 0.4-0.6 m, the depth of the sandy soil filtering layer is 0.4-0.6 m, the depth of the gravel layer is 0.2-0.6 m, and the whole width of the biological retention zone and the kerbs on two sides is more than or equal to 2.0 m; positions with the width of 0.3 meter and the length of more than or equal to 1.0 meter are reserved on two sides of the position of the street tree.
The other sponge type road side sub-zone bioretention zone rainwater collection system is characterized in that sponge facility zones with lower terrain do not exist in the whole two-side green belts of the side sub-zones and the two-side roads, the seepage pipe is arranged in the sandy soil filtering layer and is connected to an overflow type rainwater port, and an overflow pipe does not need to be arranged.
Still another sponge type road side divides area bioretention area rainwater collection system, difference lies in, one side of the side branch area is equipped with the roadway, and the opposite side is equipped with pavement, people and non-board altogether or allows the non-motor lane of infiltration, the impervious geotechnological cloth parcel bioretention of bioretention area standard section corresponds roadway one side to and extend to bioretention area standard section bottom, and extend length is 1/3 of bioretention area standard section bottom width, need not to set up infiltration pipe and overflow pipe.
Compared with the prior art, the beneficial effects of the utility model are that: full play sponge road biological detention area infiltration retaining function can realize the dual management and control of rainwater yield and quality of water, can improve urban rainwater and collect the utilization level, has both alleviateed municipal drainage pipe's drainage pressure, realizes the collection utilization of rainwater again.
Drawings
Fig. 1 is a plan view of a bioretention strip according to example 1 of the present invention.
FIGS. 2-6 are cross-sectional views A-A, B-B, C-C, D-D, E-E of FIG. 1, respectively.
Fig. 7 is a schematic view of the installation of a curb in embodiment 1 of the present invention.
Fig. 8 is a plan view of a bioretention strip of example 2 of the present invention.
FIGS. 9-13 are cross-sectional views A-A, B-B, C-C, D-D, E-E, respectively, of FIG. 8.
Fig. 14 is a plan view of a bioretention strip of example 3 of the invention.
FIGS. 15-19 are cross-sectional views A-A, B-B, C-C, D-D, E-E, respectively, of FIG. 14.
The parts in the figures are numbered as follows:
1 street lamp foundation
2 street lamp circuit inspection well
3 overflow type gutter inlet
4 curb stone
401 kerbstone opening
5-way tree
6 gutter inlet connecting pipe
7 cut dirty basket of hanging
8 gravel
9 aquifer
10 planting soil layer
11 sandy soil filter layer
12 permeable geotextile
13 gravel layer
14 waterproof geotextile
15 oozing pipe
16 overflow pipe
17 street lamp cable line.
Detailed Description
The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings to make it clear to those skilled in the art how to practice the invention. While the invention has been described in connection with its preferred embodiments, these embodiments are intended to be illustrative, and not to limit the scope of the invention.
Example 1
Referring to fig. 1 to 7, a sponge type road side zone bioretention zone rainwater collection system comprises a side zone, a bioretention zone arranged in the side zone, a street lamp foundation 1, a street lamp line inspection well 2, an overflow type rainwater inlet 3, a signboard foundation, a kerb 4 and a street tree 5; both sides of the side sub-belt are provided with roadways, or one side of the side sub-belt is provided with a roadway and the other side is provided with a non-motor vehicle lane which is not allowed to seep water; greenbelts are arranged on the two sides of the whole body of the side branch belt and the roads on the two sides, and sponge facility belts with lower terrain are arranged in the greenbelts.
The bioretention belt is composed of more than one bioretention belt standard section, the length of each bioretention belt standard section is equal to the distance between two adjacent street lamp bases 1, the bioretention belt standard section takes the street lamp bases 1 on the upstream of the longitudinal slope direction of the road in the two adjacent street lamp bases 1 as a starting point and takes the street lamp bases 1 on the downstream of the longitudinal slope direction of the road as a terminal point, the height of a top mark at the starting point of the bioretention belt standard section is 0.05m lower than the elevation of the road at the outer edge of the corresponding pile number road, the height of the top mark at the terminal point of the bioretention belt standard section is 0.25m lower than the elevation of the road at the outer edge of the corresponding pile number road, the longitudinal gradient of the bioretention belt standard section is i = (0.25-0.05)/L, and L is the length of the single.
Wherein, every street lamp basis 1's side is equipped with corresponding street lamp circuit inspection shaft 2, and street lamp basis 1 sets up along the upper reaches of road cross slope direction, and corresponding street lamp circuit inspection shaft 2 sets up along the low reaches of road cross slope direction, and the top elevation of street lamp basis 1 and the street lamp circuit inspection shaft 2 that corresponds is unanimous with the elevation of corresponding stake number road outer boundary line department road, and street lamp basis 1 and the street lamp circuit inspection shaft 2 that corresponds are as the manger plate weir.
In principle, an overflow type rainwater inlet 3 is arranged near a street lamp foundation 1 at the downstream of the road longitudinal slope direction in the standard section of the biological retention zone, and the signboard foundation and the street lamp foundation 1 are constructed by adopting an all-in-one method as much as possible, so that the signboard foundation is reduced, and the influence on the biological retention zone is reduced. However, when a sign board base which needs to be separately arranged is arranged between the two street lamp bases 1, if the height of the top of the sign board base is higher than that of the corresponding position of the standard section of the biological detention zone, and the sign board base can block water flow in the standard section of the biological detention zone, the standard section of the biological detention zone is divided into two parts by the sign board base, and an overflow type rainwater inlet 3 is arranged at the position, close to the upstream of the sign board base along the longitudinal slope direction of the road. And a water head of more than 0.10m is reserved on the overflow gutter inlet 3, namely the height of the top of the overflow gutter inlet 3 is 0.10m lower than the height of the road at the outer side line of the corresponding pile number road. The overflow gutter inlet 3 is connected to the municipal rainwater well through a gutter inlet connecting pipe 6. The overflow gutter inlet 3 can be made of brick, concrete or environment-friendly gutter inlet. A sewage intercepting hanging basket 7 can be arranged in the overflow gutter inlet 3. The overflow gutter inlet 3 adopts a single-grate gutter inlet, a double-grate gutter inlet or a multi-grate gutter inlet, and needs to be calculated and confirmed according to actual conditions.
Biological both sides of detaining area standard section are all edgewise equipped with curb 4, wherein, every section distance is equipped with curb opening 401 on the curb 4 of next-door neighbour's roadway, curb opening 401's size need be confirmed through calculating, should consider 2.0 times's factor of safety, curb opening 401's high construction completion face height should not be less than 8cm, gravel 8 is laid to biological detaining area corresponding curb opening 401 department in the standard section, gravel 8 is not higher than curb opening 401's end elevation, guarantee rivers and can link up curb opening 401, avoid blockking up the condition of curb opening 401 and take place.
Each biological detention zone standard section comprises a water storage layer 9, a planting soil layer 10, a sandy soil filter layer 11, a permeable geotextile 12, a gravel layer 13 and a impermeable geotextile 14 which are sequentially arranged from top to bottom, wherein the depth of the water storage layer 9 is 0.05-0.2 m, the depth of the planting soil layer 10 is 0.4-0.6 m, the depth of the sandy soil filter layer 11 is 0.4-0.6 m, the depth of the gravel layer 13 is 0.2-0.6 m, the impermeable geotextile 14 completely wraps the bottom and two sides of the biological detention zone standard section, and the whole width of the biological detention zone and the two side kerbs 4 is more than or equal to 2.0 m.
Biological detention area standard section still includes oozing pipe 15 and overflow pipe 16, oozing pipe 15 and overflow pipe 16 set up in gravel layer 13, ooze pipe 15 and set up and do not insert overflow formula inlet for stom water 3 along road longitudinal slope direction, and the pipe diameter of oozing pipe 15 should be DN100~ DN150, and the extending direction equipartition of oozing pipe 15 is followed to overflow pipe 16 more than two, and overflow pipe 16 sets up and extends to the lower sponge facility in-band of topography in the greenbelt along road transverse slope direction.
The position of the street tree 5 needs to be combined with the soil ball size of the street tree 5 and the requirement on the planting soil depth in order to avoid the conflict with the infiltration pipe 15, and is combined with the overall consideration of the buried depth of the infiltration pipe 15. Positions with the width of 0.3 meter and the length of more than or equal to 1.0 meter are reserved on two sides of the position of the street tree 5, so that the situation that the elevation of the planting soil is unreasonably arranged to block the water flow of the standard section of the bioretention belt in the construction process is avoided. The circumference of the street tree 5 is preferably made of ground cover plants such as turf within 1.0-1.5 m. If the soil ball of the street tree 5 is large, the height of the top mark of the standard section of the bioretention zone is unchanged, the soil elevation planted at the position of the street tree 5 can be properly raised in the form of a hill arc, and the height of the soil can be raised to be flush with the height of the top mark of the curb 4, but under the condition, the distance from the position of the street tree 5 to the curb 4 at two sides needs to be ensured to be more than or equal to 0.30 m.
The depth of the standard section of the bioretention zone is optimized in combination with the geological exploration condition, for example, blasting construction is needed in the road construction process aiming at shallow rock layers of certain road sections, and under the condition, the depth of the facility zone is determined in a comprehensive consideration mode in combination with the thickness of a road structure and the depth of blasting needed in the construction process. If the road structure layer is 0.70m, a lower cushion surface layer of 0.30m is needed below the road structure layer in the construction process, and the blasting depth is 1.0m, the depth of the facility belt can be 1.0m, and the blasting amount is not suitable to be increased independently for the facility belt.
In addition, the plane position of the street lamp cable pipeline 17 is required to be arranged on one side close to the non-motor vehicle lane, and is finally arranged close to the curb 4, so that the influence on the street trees 5 is reduced as much as possible, the vertical position of the street lamp cable pipeline 17 is required to be avoided from the gutter inlet connecting pipe 6, and the street lamp cable pipeline 17 is required to be combined with the quantity confirmation of the street lamp cable pipeline 17 to be arranged above or below the gutter inlet connecting pipe 6.
Example 2
Referring to fig. 8 to 13, a sponge type rainwater collection system for a side branch zone and a bioretention zone of a road is different from that of embodiment 1 in that no sponge facility zone with low terrain exists in the side branch zone and the green zones at two sides of the whole road, so that an overflow pipe 16 is not needed, and a seepage pipe 15 is arranged in a sandy soil filter layer 12 and is connected to an overflow type rainwater port 3.
Example 3
Referring to fig. 14 to 19, a sponge type side-banded bioretention belt rainwater collecting system for roads is different from the embodiment 1 and the embodiment 2 in that one side of the side-banded bioretention belt is provided with a roadway, the other side is provided with a sidewalk, a man-machine-not-shared board or a water-permeable non-motor way, and the waterproof geotextile 14 of the standard section of the bioretention belt wraps one side of the corresponding roadway of the standard section of the bioretention belt and extends to the bottom of the standard section of the bioretention belt, and extends to 1/3 with the bottom width of the standard section of the bioretention belt without providing a seepage pipe 15 and an overflow pipe 16.
It should be noted that many variations and modifications of the embodiments of the present invention are possible, which are fully described, and are not limited to the specific examples of the above embodiments. The above embodiments are merely illustrative of the present invention and are not intended to limit the present invention. In conclusion, the scope of the present invention should include those changes or substitutions and modifications which are obvious to those of ordinary skill in the art.
Claims (9)
1. A sponge type road side zone bioretention zone rainwater collection system is characterized by comprising a side zone, and a bioretention zone, a street lamp foundation, a street lamp line inspection well, an overflow type rainwater port, a signboard foundation, a kerb and a street tree which are arranged in the side zone;
both sides of the side sub-belt are provided with roadways, or one side of the side sub-belt is provided with a roadway and the other side is provided with a non-motor vehicle lane which is not allowed to seep water; green belts are arranged on the side branch belts and the two sides of the whole body of the roads on the two sides, and sponge facility belts with lower topography are arranged in the green belts;
the bioretention belt is composed of more than one bioretention belt standard section, the length of each bioretention belt standard section is equal to the distance between two adjacent street lamp foundations, the bioretention belt standard section takes a street lamp foundation at the upstream of the two adjacent street lamp foundations along the longitudinal slope direction of the road as a starting point and takes a street lamp foundation at the downstream of the longitudinal slope direction of the road as an end point, and the top standard heights of the bioretention belt standard section at the starting point and the end point are respectively lower than the elevation of the road at the outer edge line of the road corresponding to the pile number;
a corresponding street lamp line inspection well is arranged beside each street lamp foundation, and the top elevation of the street lamp foundation and the corresponding street lamp line inspection well is consistent with the elevation of the road at the outer edge line of the corresponding pile number road;
an overflow type rainwater inlet is arranged near a street lamp foundation at the downstream of the road longitudinal slope direction in the standard section of the bioretention zone, the top elevation of the overflow type rainwater inlet is lower than the elevation of a road at the outer side line of a road corresponding to a pile number, and the overflow type rainwater inlet is connected to a municipal rainwater well through a rainwater inlet connecting pipe;
kerbstones are arranged along the edges of two sides of the standard section of the bioretention belt, kerbstone openings are arranged on the kerbstones adjacent to the roadway at intervals, and gravels are paved at the corresponding kerbstone openings in the standard section of the bioretention belt;
every biological detention area standard section includes water-storage layer, planting soil layer, sandy soil filter layer, the geotechnological cloth that permeates water, gravel layer, the waterproof geotechnological cloth that top-down set gradually, the bottom and the both sides of biological detention area standard section are wrapped up entirely to waterproof geotechnological cloth, biological detention area standard section still includes infiltration pipe and overflow pipe, infiltration pipe and overflow pipe set up in the gravel layer, and the infiltration pipe sets up and does not insert overflow formula inlet for stom water along road longitudinal slope direction, and the extending direction equipartition of infiltration pipe is followed to the overflow pipe more than two, and the overflow pipe sets up and extends to the lower sponge facility in-band of terrain in the greenbelt along road transverse slope direction.
2. The sponge-type road side branch zone bioretention zone rainwater collection system according to claim 1 wherein the sign base is integrated with a street lamp base; or the signboard foundation is arranged between two adjacent street lamp foundations, and another overflow type rainwater inlet is arranged at the position, close to the upstream of the road longitudinal slope of the corresponding signboard foundation of the biological retention zone standard section.
3. The sponge-type rainwater collection system with bioretention strips on the side of a road according to claim 1 or 2, wherein the height of the top of the bioretention strip at the starting point of the standard section is 0.05m lower than the height of the road at the outer edge of the corresponding pile number road, and the height of the top of the bioretention strip at the end point of the standard section is 0.25m lower than the height of the road at the outer edge of the corresponding pile number road; the depth of the water storage layer is 0.05-0.2 m, the depth of the planting soil layer is 0.4-0.6 m, the depth of the sandy soil filtering layer is 0.4-0.6 m, the depth of the gravel layer is 0.2-0.6 m, and the whole width of the biological retention zone and the kerbs on two sides is more than or equal to 2.0 m; positions with the width of 0.3 meter and the length of more than or equal to 1.0 meter are reserved on two sides of the position of the street tree.
4. A sponge type road side zone bioretention zone rainwater collection system is characterized by comprising a side zone, and a bioretention zone, a street lamp foundation, a street lamp line inspection well, an overflow type rainwater port, a signboard foundation, a kerb and a street tree which are arranged in the side zone;
both sides of the side sub-belt are provided with roadways, or one side of the side sub-belt is provided with a roadway and the other side is provided with a non-motor vehicle lane which is not allowed to seep water;
the bioretention belt is composed of more than one bioretention belt standard section, the length of each bioretention belt standard section is equal to the distance between two adjacent street lamp foundations, the bioretention belt standard section takes a street lamp foundation at the upstream of the two adjacent street lamp foundations along the longitudinal slope direction of the road as a starting point and takes a street lamp foundation at the downstream of the longitudinal slope direction of the road as an end point, and the top standard heights of the bioretention belt standard section at the starting point and the end point are respectively lower than the elevation of the road at the outer edge line of the road corresponding to the pile number;
a corresponding street lamp line inspection well is arranged beside each street lamp foundation, and the top elevation of the street lamp foundation and the corresponding street lamp line inspection well is consistent with the elevation of the road at the outer edge line of the corresponding pile number road;
an overflow type rainwater inlet is arranged near a street lamp foundation at the downstream of the road longitudinal slope direction in the standard section of the bioretention zone, the top elevation of the overflow type rainwater inlet is lower than the elevation of a road at the outer side line of a road corresponding to a pile number, and the overflow type rainwater inlet is connected to a municipal rainwater well through a rainwater inlet connecting pipe;
kerbstones are arranged along the edges of two sides of the standard section of the bioretention belt, kerbstone openings are arranged on the kerbstones adjacent to the roadway at intervals, and gravels are paved at the corresponding kerbstone openings in the standard section of the bioretention belt;
every biological detention area standard section includes water-storage layer, planting soil layer, sandy soil filter layer, the geotechnological cloth that permeates water, gravel layer, the waterproof geotechnological cloth that top-down set gradually, the bottom and both sides of biological detention area standard section are all wrapped up to waterproof geotechnological cloth, biological detention area standard section still includes the infiltration pipe, the infiltration pipe sets up in sandy soil filter layer, and the infiltration pipe sets up and inserts overflow formula inlet for stom water along the road longitudinal gradient direction.
5. The sponge-type road side branch zone bioretention zone rainwater collection system of claim 4 wherein the sign base is integrated with a street lamp base; or the signboard foundation is arranged between two adjacent street lamp foundations, and another overflow type rainwater inlet is arranged at the position, close to the upstream of the road longitudinal slope of the corresponding signboard foundation of the biological retention zone standard section.
6. The sponge-type rainwater collection system with bioretention strips on the side of road according to claim 4 or 5, wherein the height of the top of the bioretention strip at the starting point of the standard section is 0.05m lower than the height of the road at the outer edge of the corresponding pile number road, and the height of the top of the bioretention strip at the end point of the standard section is 0.25m lower than the height of the road at the outer edge of the corresponding pile number road; the depth of the water storage layer is 0.05-0.2 m, the depth of the planting soil layer is 0.4-0.6 m, the depth of the sandy soil filtering layer is 0.4-0.6 m, the depth of the gravel layer is 0.2-0.6 m, and the whole width of the biological retention zone and the kerbs on two sides is more than or equal to 2.0 m; positions with the width of 0.3 meter and the length of more than or equal to 1.0 meter are reserved on two sides of the position of the street tree.
7. A sponge type road side zone bioretention zone rainwater collection system is characterized by comprising a side zone, and a bioretention zone, a street lamp foundation, a street lamp line inspection well, an overflow type rainwater port, a signboard foundation, a kerb and a street tree which are arranged in the side zone;
one side of the side sub-belt is provided with a roadway, and the other side of the side sub-belt is provided with a sidewalk, a person-non-common board or a non-motor vehicle lane allowing water seepage;
the bioretention belt is composed of more than one bioretention belt standard section, the length of each bioretention belt standard section is equal to the distance between two adjacent street lamp foundations, the bioretention belt standard section takes a street lamp foundation at the upstream of the two adjacent street lamp foundations along the longitudinal slope direction of the road as a starting point and takes a street lamp foundation at the downstream of the longitudinal slope direction of the road as an end point, and the top standard heights of the bioretention belt standard section at the starting point and the end point are respectively lower than the elevation of the road at the outer edge line of the road corresponding to the pile number;
a corresponding street lamp line inspection well is arranged beside each street lamp foundation, and the top elevation of the street lamp foundation and the corresponding street lamp line inspection well is consistent with the elevation of the road at the outer edge line of the corresponding pile number road;
an overflow type rainwater inlet is arranged near a street lamp foundation at the downstream of the road longitudinal slope direction in the standard section of the bioretention zone, the top elevation of the overflow type rainwater inlet is lower than the elevation of a road at the outer side line of a road corresponding to a pile number, and the overflow type rainwater inlet is connected to a municipal rainwater well through a rainwater inlet connecting pipe;
kerbstones are arranged along the edges of two sides of the standard section of the bioretention belt, kerbstone openings are arranged on the kerbstones adjacent to the roadway at intervals, and gravels are paved at the corresponding kerbstone openings in the standard section of the bioretention belt;
every biological detention area standard section includes that top-down sets gradually aquifer, planting soil layer, sandy soil filter layer, the geotechnological cloth that permeates water, gravel layer, the waterproof geotechnological cloth, the corresponding roadways one side of biological detention area standard section of waterproof geotechnological cloth parcel to extend to biological detention area standard section bottom, extension length is 1/3 of biological detention area standard section bottom width.
8. The sponge-type road side branch zone bioretention zone rainwater collection system of claim 7 wherein the sign base is integrated with a street lamp base; or the signboard foundation is arranged between two adjacent street lamp foundations, and another overflow type rainwater inlet is arranged at the position, close to the upstream of the road longitudinal slope of the corresponding signboard foundation of the biological retention zone standard section.
9. The sponge-type rainwater collection system with bioretention strips on the side of road according to claim 7 or 8, wherein the height of the top of the bioretention strip at the starting point of the standard section is 0.05m lower than the height of the road at the outer edge of the corresponding pile number road, and the height of the top of the bioretention strip at the end point of the standard section is 0.25m lower than the height of the road at the outer edge of the corresponding pile number road; the depth of the water storage layer is 0.05-0.2 m, the depth of the planting soil layer is 0.4-0.6 m, the depth of the sandy soil filtering layer is 0.4-0.6 m, the depth of the gravel layer is 0.2-0.6 m, and the whole width of the biological retention zone and the kerbs on two sides is more than or equal to 2.0 m; positions with the width of 0.3 meter and the length of more than or equal to 1.0 meter are reserved on two sides of the position of the street tree.
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| CN201920480088.XU CN210216633U (en) | 2019-04-10 | 2019-04-10 | Sponge type road side branch area biological detention area rainwater collection system |
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| CN201920480088.XU CN210216633U (en) | 2019-04-10 | 2019-04-10 | Sponge type road side branch area biological detention area rainwater collection system |
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| CN201920480088.XU Active CN210216633U (en) | 2019-04-10 | 2019-04-10 | Sponge type road side branch area biological detention area rainwater collection system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114960327A (en) * | 2022-05-20 | 2022-08-30 | 上海二十冶建设有限公司 | Road surface green belt tree pit structure and construction method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114960327A (en) * | 2022-05-20 | 2022-08-30 | 上海二十冶建设有限公司 | Road surface green belt tree pit structure and construction method |
| CN114960327B (en) * | 2022-05-20 | 2023-09-29 | 上海二十冶建设有限公司 | Construction method of tree pit structure of road surface green belt |
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