CN111335433A - Construction method of sponge city in-situ water storage system - Google Patents
Construction method of sponge city in-situ water storage system Download PDFInfo
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- CN111335433A CN111335433A CN202010195385.7A CN202010195385A CN111335433A CN 111335433 A CN111335433 A CN 111335433A CN 202010195385 A CN202010195385 A CN 202010195385A CN 111335433 A CN111335433 A CN 111335433A
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- rainwater
- water storage
- ground surface
- storage system
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F1/00—Methods, systems, or installations for draining-off sewage or storm water
- E03F1/002—Methods, systems, or installations for draining-off sewage or storm water with disposal into the ground, e.g. via dry wells
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
- E03F5/105—Accessories, e.g. flow regulators or cleaning devices
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/14—Devices for separating liquid or solid substances from sewage, e.g. sand or sludge traps, rakes or grates
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F2201/00—Details, devices or methods not otherwise provided for
- E03F2201/10—Dividing the first rain flush out of the stormwater flow
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Sewage (AREA)
Abstract
The utility model relates to a construction method of sponge city normal position retaining system, the rainwater storage unit that sets up includes filter mantle, base, set up the hole of permeating water on the filter mantle and can be with the rainwater infiltration, received by the base, carry out the rainwater and accomodate, so both can permeate water, can accomodate water again, bury the rainwater storage unit underground, cover the back with soil, the rainwater enters the filter mantle after soil surface filtration, the base is accomodate the rainwater, so both can collect the rainwater after filtering, can make the rainwater remain in situ again, when treating the arid, the rainwater of accomodating in the base can supply the evaporation utilization, make upper soil keep moist.
Description
Technical Field
The invention belongs to the field of rainwater treatment, and particularly relates to a construction method of a sponge urban in-situ water storage system.
Background
Because the degree of urbanization in China is continuously improved, no matter in the process of urbanization is the construction of residential development or public infrastructures such as roads, squares and underground pipe networks, reinforced concrete is mostly adopted for hardening, the original ecology of the earth surface is thoroughly changed, rainwater resource loss is caused, the urban ecosystem is disordered, geological disasters occur occasionally, urban inland inundation, haze and heat island effects are aggravated, and once it rains for a long time, if a sewer cannot timely and smoothly drain rainwater, serious urban inland inundation can occur. In municipal water treatment process, a large amount of rainwater also can get into water treatment system, not only can cause water treatment system unstability, still can improve water plant cost greatly, and the maintenance water in urban operation in-process all the time is the highest in each item of city greenery patches maintenance cost, and it is a huge waste to carry out the greenery patches maintenance with municipal tap water again.
At present, the country carries out the construction of 'sponge cities', popularizes and applies low-influence development and construction modes, can effectively relieve urban waterlogging, reduces urban runoff pollution load, saves water resources, and protects and improves urban ecological environment. Wherein, the rainwater retaining module is slowly being widely used along with the propulsion in sponge city. However, the existing rainwater storage modules are boxes assembled by structural plates formed by polypropylene injection molding, a certain number of plastic modules form a matrix and are buried underground to form a huge water storage tank, impermeable geotextile or one-way permeable geotextile is wrapped around the water storage tank according to engineering requirements, and the rainwater storage tank can be used as a water storage tank or a permeable flood control tank with two different functions. The rainwater water storage module solves the problems of rainwater storage, and has the problems of large occupied area, matched facilities for use, high use and maintenance cost and the like in actual use.
CN105133718B discloses a water guide system applied to a sponge city ecological ground system and a construction method, the water guide system comprises a water guide unit consisting of a plurality of water guide pipes, a water guide cover for blocking an opening at the upper end of the water guide pipe and the like, but the water guide cover has high reconstruction degree on the existing roads and squares due to high construction difficulty and can not store water in situ well; CN204940474U discloses a water permeable device applied in a sponge urban ecological ground system, which, although it discloses a water permeable device, is limited to permeating water underground, does not collect rainwater in situ, does not collect filtered water, and has no effect of diversion on rainwater diversion and transportation; CN105297645B discloses a sponge city rainwater stagnation storage and seepage purification drainage system pipe fitting and a construction method thereof, wherein a pipeline setting mode is adopted to guide rainwater, and the construction difficulty is high. Therefore, the existing sponge city construction process is high in investment, large in occupied area and unsustainable in operation, and due to the fact that the operation cost is high, the sponge city concept is difficult to popularize.
Disclosure of Invention
The invention aims to provide a construction method of a sponge city in-situ water storage system.
In order to solve the technical problem, the invention discloses a construction method of a sponge city in-situ water storage system, which is characterized by comprising the following steps:
1) selecting a water storage system setting area or line;
2) looking up local rainfall data or determining the setting density and the water storage capacity of a rainwater storage unit of the sponge city in-situ water storage system according to experience;
3) according to the setting density determined in the step 2, setting point positions of earth surface holes on the area or the line;
4) determining the depth of the ground surface hole 10 and the specification of the rainwater receiving unit 3 according to the determined density and water demand;
5) excavating the ground surface hole on the ground by adopting a pile driver or manpower according to the determined depth of the ground surface hole;
6) a rainwater storage unit 3 is arranged in the ground surface hole; the depth of the ground surface hole 10 is higher than that of the rainwater storage unit 3, a filter layer 2 is placed in the rainwater storage unit, a soil layer 3 is arranged on the upper portion of the filter layer 2, and the filter layer is one or more of cobblestones, gravels, quartz sand, activated carbon and the like;
the rainwater storage unit includes filter mantle 4 and receives water base 5, the filter mantle is detained on receiving the water base, rainwater storage unit 3 includes filter mantle 4, receives water base 5, filter mantle 4 has the shell, the shell is hollow structure, even and/or inhomogeneous hole of permeating water on the shell, 4 bottom openings of filter mantle, place in receiving water base 5 in filter mantle 4 bottom, it is the tubbiness structure to receive water base 5, 4 bottom opening shapes of filter mantle are the same with base tubbiness structure bottom shape, 4 bottom opening internal diameters of filter mantle are the same with the internal diameter of base tubbiness structure bottom or slightly little.
Furthermore, a plurality of ground surface holes 10 are arranged in the system, the ground surface holes 10 are adjacent, an interval soil layer 11 is arranged between the adjacent ground surface holes 10, a channel 12 is arranged in the middle of the interval soil layer, and the adjacent ground surface holes are communicated through the channel 12;
furthermore, the depths of the adjacent surface holes are different, the channels 12 are communicated with the adjacent surface holes with different depths, the channels 12 are obliquely arranged, the high ends of the obliquely arranged channels 12 are communicated with the surface holes with shallow depths, and the porous low ends of the obliquely arranged channels 12 are communicated with the surface holes with deep depths;
further, the depth of the ground surface hole is calculated by taking a horizontal plane as a reference;
further, the particle size of the water permeable holes is increased from top to bottom in sequence;
further, the filter cover 4 is in a structure of a column, a cone, a frustum, a cuboid, a cube and the like;
further, a cover plate 41 is arranged in the middle of the filter cover 4, the shape of the cover plate 41 is the same as that of the top of the water receiving base 5, and the caliber of the cover plate 41 is larger than that of the top of the water receiving base 5;
further, the cover plate 41 is of a horizontal or obliquely downward structure;
further, the outer edge of the horizontal structure or the obliquely downward structure of the cover plate 41 has a downward bent structure 42;
furthermore, the bending structure is provided with a buckle which is clamped with the side wall of the base;
furthermore, a plurality of reinforcing ribs from bottom to top are arranged inside the side wall of the shell of the filter cover 4, and the reinforcing ribs are hollow tubes;
furthermore, the part of the hollow pipe above the horizontal plane of the cover plate is a perforated pipe, and the perforated pipe is provided with a plurality of through holes which are communicated with the water permeable holes;
further, a tree-shaped bracket is arranged in the filter cover 4;
furthermore, the tree-shaped support consists of a seat stand 6, a main pipe 7, branch pipes 8 and a flow guide pipe 9;
furthermore, the main pipe 7 is arranged on the seat stand 6, a plurality of branch pipes 8 are arranged on the main pipe 7, the branch pipes 8 are obliquely arranged upwards from the connection part of the main pipe, the branch pipes 8 are used for supporting the filter cover 4, guide pipes 9 are also arranged on the branch pipes 8, and the guide pipes 9 are communicated with part of the water permeable holes;
furthermore, a water inlet hole is formed in the main pipe; a filter screen is arranged outside the water inlet hole;
furthermore, a support groove is arranged on the filter cover 4, and the branch pipe is clamped with the support groove;
furthermore, the pipe diameters of the main pipe, the branch pipes and the flow guide pipe are arranged from large to small;
furthermore, the water receiving base is provided with an inverted cone-shaped platform, and the bottom of the filter cover 41 is provided with an inverted cone structure corresponding to the inverted cone-shaped platform;
further, the grain size of the water permeable holes is smaller than that of the filter material in the filter layer;
furthermore, the rainwater storage unit is arranged in a pile pit of soil, a gravel layer is embedded in the pile pit, and a soil layer is arranged on the gravel layer;
further, a cylindrical barrel is adopted as a receiving base of the rainwater receiving unit 3, the barrel is 20-100cm high, and the radius of the bottom surface is 10-50 cm.
The construction method of the sponge city in-situ water storage system has the following advantages:
1. the rainwater storage unit is provided with a filter cover 4 and a base, the filter cover 4 is provided with water permeable holes to put rainwater into the filter cover and receive the rainwater through the base, so that the rainwater can be permeated and stored, the rainwater storage unit is buried underground and covered with soil, the rainwater is filtered by the soil surface layer and then enters the filter cover 4, and the base stores the rainwater, so that the filtered rainwater can be collected and kept in place, and when the rainwater is dry, the rainwater stored in the base can be evaporated and utilized to keep the soil on the upper layer moist;
2. the method comprises the steps of determining the set density and the water storage capacity of the sponge city in-situ water storage system according to local precipitation data or experience, for example, determining the set density of each unit in the in-situ water storage system according to the historical water level height and the water storage capacity of a low-lying area, and flexibly adjusting the depth of a ground surface hole and a rainwater storage unit according to the actual conditions of local soil, so that the construction cost can be saved with the maximum efficiency;
3. a channel is arranged between the soil layers at intervals between the adjacent ground surface holes, the channel is used for communicating the adjacent ground surface holes, after the ground surface holes are communicated, because the ground surface holes have a horizontal height difference, the water can be considered to be transferred to an area with a low horizontal height, the area can be a sloping field, and rainwater in a pit area is conveyed to the sloping field (see figure 8);
4. the periphery of the building is communicated by adopting a plurality of ground surface holes, and the precipitation around the building is led to a pond and a place near a plurality of trees by utilizing the horizontal height difference of the ground surface holes, so that the condition that the dehumidification equipment of the building is used and no water is supplied to the trees can be reduced;
5. after the pile driver is adopted for piling, the soil around the ground surface hole is compact, and the water permeability is reduced, so that the water in the soil can be better preserved;
6. the whole system is formed by adopting smaller units, the failure of a single unit can be simply and quickly found, and the maintenance cost and the operation cost are lower than those of the prior art; the system can be large or small, and is convenient to construct in different built districts, squares, factories, roads, grasslands and the like.
Drawings
Fig. 1 is a schematic view of a construction method of a sponge city in-situ water storage system.
Fig. 2 is a schematic view of a construction method of a sponge city in-situ water storage system.
Fig. 3 is a schematic view of a rainwater receiving unit.
Fig. 4 is a schematic view of a rainwater receiving unit.
Fig. 5 is a schematic view of a tree stent.
Fig. 6 is a schematic view of adjacent surface openings.
Fig. 7 is a schematic view of a passageway between adjacent surface openings.
FIG. 8 is a schematic view of a construction method of a sloping field sponge city in-situ water storage system.
Fig. 9 is a schematic point distribution diagram of a sloping field sponge city in-situ water storage system.
Fig. 10 is a schematic view of a construction method of an in-situ water storage system of a sponge city.
Detailed Description
The present invention is further described in detail below with reference to examples so that those skilled in the art can practice the invention with reference to the description.
It will be understood that terms such as "having," "including," and "comprising," when used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
Example 1
With reference to figures 8-10 of the drawings,
1) selecting a water storage system setting area as a hollow area and a sloping field, storing water for a long time in the rainy season of the sloping field, wherein the water storage capacity is 18-25 cubic meters, and the deepest part is about 10-15 cm;
2) looking up local rainfall data or determining the setting density and the water storage capacity of a rainwater storage unit of the sponge city in-situ water storage system according to experience; according to experience, the water storage capacity is determined to be 20 cubic meters, and the density is set to be 0.5-1 unit per square meter;
3) according to the setting density determined in the step 2, setting point positions of earth surface holes on the area or the line;
4) determining the depth of the ground surface hole 10 and the specification of the rainwater receiving unit 3 according to the determined density and water demand;
5) excavating the ground surface hole on the ground by adopting a pile driver or manpower according to the determined depth of the ground surface hole;
6) a rainwater storage unit 3 is arranged in the ground surface hole; the depth of the ground surface hole 10 is higher than that of the rainwater storage unit 3, a filter layer 2 is placed in the rainwater storage unit, a soil layer 3 is arranged on the upper portion of the filter layer 2, and the filter layer sequentially comprises cobblestone layers, gravel layers, activated carbon layers, quartz sand layers and cobblestone layers from bottom to top;
The rainwater storage unit 3 is characterized in that a storage base is a cylindrical barrel, the height of the barrel is 20-40cm, the radius of the bottom surface of the barrel is 10cm, a filter cover is of a conical structure, and the radius of the bottom surface of the cone is 9.9cm, and the height of the bottom surface of the cone is 40-100 cm.
The total number of the rainwater storage units 3 is 100, and the depth (sea level is used as a reference) of the ground surface holes gradually decreases from the hollow area to the sloping field.
Example 2
On the basis of embodiment 1, a plurality of reinforcing ribs from bottom to top are arranged inside the side wall of the shell of the filter cover 4, the reinforcing ribs are hollow pipes, the parts of the hollow pipes above the horizontal plane of the cover plate are perforated pipes, and the perforated pipes are provided with a plurality of through holes which are communicated with the water permeable holes.
Example 3
On the basis of embodiment 1, a tree-shaped support is arranged in the filter housing 4, the tree-shaped support is composed of a seat stand 6, a main pipe 7, branch pipes 8 and a flow guide pipe 9, the main pipe 7 is arranged on the seat stand 6, the main pipe 7 is provided with a plurality of branch pipes 8, the branch pipes 8 are arranged obliquely upwards from the connection part of the main pipe, the branch pipes 8 are used for supporting the filter housing 4, the branch pipes 8 are also provided with flow guide pipes 9, the flow guide pipes 9 are communicated with part of the water permeable holes, and the main pipe is provided with water inlet holes; and a filter screen is arranged outside the water inlet hole.
Example 4
On the basis of the embodiment 1, referring to fig. 10, rainwater around a building or a building is introduced to the vicinity of trees, so that the problem of water seepage around the building is greatly improved, meanwhile, the moisture around the trees is greatly improved, and the irrigation cost is reduced
| Soil moisture after rain | Rainwater storage unit | Control group |
| Tree (a tree) | 28% | 19% |
| Building with a plurality of |
12% | 17% |
While embodiments of the invention have been described above, it is not limited to the applications set forth in the description and the embodiments, which are fully applicable to various fields of endeavor for which the invention may be embodied with additional modifications as would be readily apparent to those skilled in the art, and the invention is therefore not limited to the details given herein and to the embodiments shown and described without departing from the generic concept as defined by the claims and their equivalents.
Claims (10)
1. A construction method of a sponge city in-situ water storage system is characterized by comprising the following steps:
1) selecting a water storage system setting area or line;
2) looking up local precipitation data or determining the set density and water storage capacity of the sponge city in-situ water storage system according to experience;
3) according to the setting density determined in the step 2, setting point positions of earth surface holes on the area or the line;
4) determining the depth of the ground surface hole 10 and the specification of the rainwater receiving unit 3 according to the determined density and water demand;
5) excavating the ground surface hole on the ground by adopting a pile driver or manpower according to the determined depth of the ground surface hole;
6) a rainwater storage unit 3 is arranged in the ground surface hole; the depth of the ground surface hole 10 is higher than that of the rainwater storage unit 3, a filter layer 2 is placed in the rainwater storage unit, a soil layer 3 is arranged on the upper portion of the filter layer 2, and the filter layer is one or more of cobblestones, gravels, quartz sand, activated carbon and the like;
rainwater storage unit (3) include filter mantle (4), receive water base (5), filter mantle (4) have a shell, the shell is hollow structure, even and/or inhomogeneous hole of permeating water on the shell, filter mantle (4) bottom opening, place in receiving water base (5) filter mantle (4) bottom, it is the tubbiness structure to receive water base (5), filter mantle (4) bottom opening shape is the same with base tubbiness structure bottom shape.
2. The construction method of the sponge city in-situ water storage system as claimed in claim 1, wherein the inner diameter of the bottom opening of the filter cover (4) is the same as or slightly smaller than the inner diameter of the bottom of the base barrel-shaped structure.
3. The construction method of the sponge city in-situ water storage system as claimed in claim 1, wherein a plurality of ground surface holes (10) are arranged in the system, the ground surface holes (10) are adjacent, a space soil layer (11) is arranged between the adjacent ground surface holes (10), a channel (12) is arranged in the middle of the space soil layer, and the channel (12) connects the adjacent ground surface holes.
4. The construction method of the sponge city in-situ water storage system as claimed in claim 1, wherein the depth of the adjacent ground surface holes is different, the channel (12) is communicated with the adjacent ground surface holes with different depths, the channel (12) is obliquely arranged, the high end of the obliquely arranged channel (12) is communicated with the ground surface hole with a shallower depth, and the low end of the obliquely arranged channel (12) is communicated with the ground surface hole with a deeper depth.
5. The construction method of the sponge city in-situ water storage system as claimed in claim 4, wherein the surface hole is calculated to have a depth based on a horizontal plane.
6. The construction method of the sponge city in-situ water storage system as claimed in claim 1, wherein the filter cover (4) is of a column, cone, frustum, cuboid, cube, semi-capsule or the like structure.
7. The construction method of the sponge city in-situ water storage system as claimed in claim 1, wherein a cover plate (41) is arranged in the middle of the filter cover (4), the cover plate (41) has the same shape as the top of the water containing base (5), and the caliber of the cover plate (41) is larger than that of the top of the water containing base (5).
8. The construction method of the sponge city in-situ water storage system as claimed in claim 1, wherein the outer edge of the horizontal structure or the inclined downward structure of the cover plate (41) is provided with a downward bending structure (42), and the bending structure is provided with a buckle which is clamped with the side wall of the base.
9. The construction method of the sponge city in-situ water storage system as claimed in claim 1, wherein the filter hood (4) is provided with a plurality of reinforcing ribs from bottom to top inside the side wall of the outer shell, the reinforcing ribs are hollow tubes, the part of the hollow tubes above the horizontal plane of the cover plate is perforated tubes, and the perforated tubes are provided with a plurality of through holes which are communicated with the water permeable holes.
10. The construction method of the sponge city in-situ water storage system as claimed in claim 1, wherein a tree-shaped support is arranged in the filter cover (4), the tree-shaped support is composed of a base (6), a main pipe (7), branch pipes (8) and a guide pipe (9), the main pipe (7) is arranged on the base (6), the main pipe (7) is provided with a plurality of branch pipes (8), the branch pipes (8) are arranged obliquely upwards from the connection part of the main pipe, the branch pipes (8) are used for supporting the filter cover (4), the branch pipes (8) are further provided with guide pipes (9), and the guide pipe (9) is communicated with part of the water permeable holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010195385.7A CN111335433A (en) | 2020-03-19 | 2020-03-19 | Construction method of sponge city in-situ water storage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010195385.7A CN111335433A (en) | 2020-03-19 | 2020-03-19 | Construction method of sponge city in-situ water storage system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111335433A true CN111335433A (en) | 2020-06-26 |
Family
ID=71182522
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010195385.7A Withdrawn CN111335433A (en) | 2020-03-19 | 2020-03-19 | Construction method of sponge city in-situ water storage system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111335433A (en) |
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2020
- 2020-03-19 CN CN202010195385.7A patent/CN111335433A/en not_active Withdrawn
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Application publication date: 20200626 |
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