CN113149355A - Water environment treatment method based on sponge city concept - Google Patents
Water environment treatment method based on sponge city concept Download PDFInfo
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- CN113149355A CN113149355A CN202110443954.XA CN202110443954A CN113149355A CN 113149355 A CN113149355 A CN 113149355A CN 202110443954 A CN202110443954 A CN 202110443954A CN 113149355 A CN113149355 A CN 113149355A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/001—Runoff or storm water
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
- C02F3/327—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae characterised by animals and plants
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Abstract
The invention discloses a water environment treatment method based on a sponge city concept, which comprises the following steps: recognizing ecological plates around a city, and dividing sponge city land blocks according to the ecological plates; implementing water seepage-drainage engineering on each urban land, so that rainwater permeates into the underground of the city, and replenishing urban underground water sources; implementing a water storage-water retention project on each urban land, storing clean rainwater and rainwater of a branch flow part; and (4) performing water purification-water utilization engineering on each urban land, and relieving the water utilization pressure of urban tap water. The invention can make part of rainwater permeate into the city underground, replenish underground water resources of urban areas, effectively relieve the problem of lowering of the urban underground water level and improve the urban underground water level; part of clean rainwater can be accumulated, part of rainwater can be branched, peak flow is reduced, pressure of a drainage pipeline is relieved, urban waterlogging is reduced, and overflow pollution is controlled; but also can realize reasonable utilization of rainwater and relieve urban water pressure.
Description
Technical Field
The invention relates to the technical field of urban water environment treatment, in particular to a water environment treatment method based on a sponge city concept.
Background
Under the background of rapid expansion of cities, the benign hydrologic cycle is influenced because the rapid development of the cities is not matched with a backward drainage system, urban water bodies are damaged, and the problem of sustainable development is more and more prominent. At present, the main problems restricting the urban development are as follows: resource shortage, frequent urban waterlogging, aggravated water pollution and decline of urban underground water level. According to incomplete statistics, severe waterlogging disasters occurred in over 15 cities in 2015, however, nearly 2/3 cities in more than 600 cities in China have water shortage, and more than 150 cities have severe water shortage. In the face of serious damage caused by urban waterlogging, China takes more measures to accelerate the development and improvement of urban rainwater pipe network systems. The construction of green infrastructure, urban hydrological systems, green buildings and urban roads is increased while improving the grey infrastructure. The method ensures the occupation rate of the cavernous body in the city, is an important measure for keeping the green development and sustainable development of the city, eliminating urban waterlogging, solving the shortage of water in the city and preventing and treating water pollution, and has profound significance.
Sponge city is a new generation of city rain and flood management concept. The sponge city is a city which can be like a sponge, has good elasticity in the aspects of adapting to environmental changes, coping with natural disasters and the like, absorbs water, stores water, seeps water and purifies water in rainy days, and releases the stored water and utilizes the water when needed. Sponge city construction should follow ecological priority principle etc. combines together natural way and artificial measures, under the prerequisite of guaranteeing urban drainage waterlogging prevention safety, furthest realizes that rainwater stores up, permeates and purifies in the urban area, promotes the utilization of rainwater resource and ecological environment protection. In the sponge city construction process, the systematicness of natural precipitation, surface water and underground water is planned, water recycling links such as water supply and drainage are coordinated, and the complexity and the longevity are considered.
Compared with developed countries, the development process of sponge cities in China is shorter. In 2010, departments begin to propose and construct a sponge city body, and local reinforcement of rain and flood management work is required to improve the drainage capacity of the city.
Disclosure of Invention
The invention aims to solve the technical problem that the backward drainage system of a city is not matched with the rapid development of the city, and aims to provide a water environment treatment method based on a sponge city concept to enhance the drainage and water storage capacity of the city.
The invention is realized by the following technical scheme:
in a first aspect, the invention provides a water environment treatment method based on a sponge city concept, which comprises the following steps
A water environment treatment method based on a sponge city concept comprises the following steps:
recognizing ecological plates around a city, and implementing different water environment treatment projects on the city according to the ecological plates;
the water environment treatment engineering comprises water seepage-drainage engineering, water storage-water retention engineering and water purification-water consumption engineering;
the water seepage-drainage engineering is used for infiltrating rainwater into the underground of a city and supplementing an underground water source of the city;
the water storage-water retention project is used for storing clean rainwater and rainwater in branch flow parts;
the water purification-utilization engineering is used for relieving the water utilization pressure of urban tap water.
Compared with the prior water environment treatment method, the invention has the innovation points that: firstly, a multi-stage multifunctional system of water quality purification, stagnant water storage and groundwater recharge is constructed. The system mainly integrates ground runoff, performs soil and biological purification, converges purified rainwater into a central sunken green belt, and supplements underground water. And secondly, a vegetation buffer zone is arranged. The vegetation buffer zone is a vegetation zone with a gentle slope, the flow velocity of surface runoff is slowed down through vegetation interception and soil infiltration, and partial pollutants in the runoff are removed. Is arranged around the impervious surface of a road or the like, and can be used as a pretreatment facility for low-influence development facilities such as a bioretention facility or the like, and can also be used as a waterfront greening zone of a city water system. Thirdly, constructing a seepage canal. The infiltration canal is formed by combining perforated plastic pipes, sand-free concrete pipes, broken stones and other materials, has small requirements on site space, but has higher construction cost, easy blockage and difficult maintenance. The method is suitable for the areas with smaller transfer flow in buildings, cells and public greenbelts.
As a further description of the present invention, the method for dividing the sponge urban land comprises: classify the ecological plate around the city according to the landform characteristics, including: forest meadows, rivers and lakes, wetlands, water conservation areas, farmlands and fields. Classify the surrounding ecological plate of city according to the function, include: important living creature habitats, conservation areas of valuable animals, distribution areas of natural heritage and landscape resources, risk identification areas of geological disasters and water resource conservation areas.
As a further description of the present invention, the water penetration-drainage engineering includes: the method comprises the steps of arranging a vegetation buffer zone, paving in a permeable way, building a sunken green land, building a permeation system and building a grass planting ditch.
As further description of the invention, considering that the application region designed by the invention is the special topography and landform and rainfall characteristics of the southwest region, the ground in the existing city is mostly a concrete impervious layer, how to fully utilize excessive rainfall to supplement urban underground water sources, and the rainfall capacity of the southwest region is rich, the invention designs a multi-stage buffer type infiltration system, wherein the infiltration system is arranged in the area to be infiltrated of the city by a plurality of infiltration devices in an array manner, piles are driven downwards from the concrete layer on the ground to penetrate each infiltration device to a sandstone layer vertically, and rainwater on the ground is infiltrated to the sandstone layer through the infiltration devices to supplement the urban underground water sources;
the infiltration device comprises an infiltration body and an infiltration matrix, the infiltration body is arranged on the infiltration matrix, the top of the infiltration body is flush with the ground, and the lower part of the infiltration matrix extends to the sandstone layer;
the permeable substrate is a cylindrical and hollow structure body, the permeable body is a circular arc-shaped structure body with an upward arc-shaped start, a cover body is arranged on the permeable body, a plurality of first water seepage holes are formed in the cover body, and a plurality of second water seepage holes leading to the permeable substrate are formed in the permeable body; a plurality of third water seepage holes are formed in the bottom of the permeable matrix; the permeable matrix is filled with a water permeable material;
according to the structural design, the three-level water seepage holes are fully utilized to buffer rainwater to slowly permeate underground, and the arc-shaped design of the permeating body is matched with the cylindrical design of the permeating matrix, so that the rainwater can be fully utilized; wherein the infiltration material in the infiltration base member can adopt the fine particle rubble, and the fine particle rubble can infiltrate the rainwater, has the purification effect to water simultaneously, plays the supporting role to the infiltration base member simultaneously, prevents that the infiltration base member from breaking, has also prevented that penetrant unit from being blockked up by debris.
As a further description of the invention, the outer wall surface of the infiltration matrix is provided with the reinforcing rib bodies along the circumferential direction and the axial direction of the infiltration matrix, so that the basic strength of infiltration is enhanced, and the stability of the infiltration is provided.
As a further description of the present invention, the infiltration apparatus may be variously arranged according to the different shapes of the water seepage areas, including but not limited to the following forms:
(1) when the areas to be permeated are distributed in a rectangular shape, a plurality of permeation devices are sequentially distributed at equal intervals along the long side of the rectangle;
(2) when the areas to be infiltrated are distributed in a circular shape, the plurality of infiltration devices are arranged along the direction of scattered rays along the circle center in an emission manner.
As a further description of the present invention, the material selection for the osmotic system includes: perforated plastic pipes, non-sand concrete and crushed stones.
As a further description of the invention, the impoundment-impoundment project comprises: setting a rainwater tank, building a reservoir, building a regulation and storage pool and building a rainwater garden.
As a further description of the present invention, the water purification-use engineering includes: urban greening and road surface cleaning are carried out by utilizing the stored rainwater; purifying the stored rainwater, and using the purified rainwater as public water.
As a further description of the present invention, the construction method of the water seepage-drainage engineering, the water storage-retention engineering and the water purification-utilization engineering includes: well point dewatering, foundation pit excavation, lower portion wrapping laying, rainwater filter well positioning and mounting, infiltration system assembling, upper portion wrapping laying, water distribution pipe connection, detection pipeline, exhaust pipeline and overflow pipe laying and earthwork backfilling.
In a second aspect, the present invention provides a water environment treatment system based on the concept of sponge city, which comprises:
the ecological plate identification module is used for identifying ecological plates around a city and implementing different water environment treatment projects on the city according to the ecological plates; the water environment treatment engineering comprises water seepage-drainage engineering, water storage-stagnant water engineering and water purification-utilization engineering;
the water seepage-drainage engineering module is used for infiltrating rainwater into the underground of a city and supplementing an underground water source of the city;
the water storage-stagnant water engineering module is used for storing clean rainwater and rainwater of branch flow parts;
the water purification-utilization engineering module is used for relieving the water utilization pressure of urban tap water;
the water seepage-drainage engineering module comprises a vegetation buffer zone, a permeable pavement, a sunken green land construction, a permeation system construction and a grass planting ditch construction;
the penetration system is arranged in an urban area to be penetrated by a plurality of penetration devices in an array manner, a pile is driven downwards from a concrete layer on the ground to vertically penetrate each penetration device downwards to a sandstone layer, and rainwater on the ground penetrates into the sandstone layer through the penetration devices to supplement urban underground water sources;
the infiltration device comprises an infiltration body and an infiltration matrix, the infiltration body is arranged on the infiltration matrix, the top of the infiltration body is flush with the ground, and the lower part of the infiltration matrix extends to the sandstone layer;
the permeable substrate is a cylindrical and hollow structure body, the permeable body is a circular arc-shaped structure body with an upward arc-shaped start, a cover body is arranged on the permeable body, a plurality of first water seepage holes are formed in the cover body, and a plurality of second water seepage holes leading to the permeable substrate are formed in the permeable body; a plurality of third water seepage holes are formed in the bottom of the permeable matrix; the permeable matrix is filled with a water permeable material; the outer wall surface of the permeable matrix is provided with reinforcing rib bodies along the circumferential direction and the axial direction.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. the water environment treatment method based on the sponge city concept can enable part of rainwater to permeate into the underground of a city, supplement underground water resources of urban areas, effectively relieve the problem of lowering of the underground water level of the city and improve the underground water level of the city;
2. the water environment treatment method based on the sponge city concept can accumulate part of clean rainwater and branch part of rainwater, reduce peak flow, relieve pressure of a drainage pipeline, reduce urban waterlogging and control overflow pollution;
3. the water environment treatment method based on the sponge city concept can realize reasonable utilization of rainwater and relieve the water pressure for the city.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a flow chart of a water environment treatment method based on a sponge city concept in an embodiment of the invention.
Fig. 2 is a schematic structural view of an osmotic system according to an embodiment of the present invention.
Fig. 3 is a schematic structural view of an osmotic device according to an embodiment of the present invention.
Fig. 4 is a schematic layout of a permeation system according to an embodiment of the present invention.
Reference numbers and corresponding part names:
1-a penetration body, 2-a penetration base body, 3-a cover body, 4-a first penetration hole, 5-a second penetration hole, 6-a third penetration hole, 7-a reinforcing rib body, 8-a sandstone layer and 9-a concrete layer.
Detailed Description
Hereinafter, the term "comprising" or "may include" used in various embodiments of the present invention indicates the presence of the invented function, operation or element, and does not limit the addition of one or more functions, operations or elements. Furthermore, as used in various embodiments of the present invention, the terms "comprises," "comprising," "includes," "including," "has," "having" and their derivatives are intended to mean that the specified features, numbers, steps, operations, elements, components, or combinations of the foregoing, are only meant to indicate that a particular feature, number, step, operation, element, component, or combination of the foregoing, and should not be construed as first excluding the possibility of one or more other features, numbers, steps, operations, elements, components, or combinations of the foregoing, or adding one or more features, numbers, steps, operations, elements, components, or combinations of the foregoing.
In various embodiments of the invention, the expression "or" at least one of a or/and B "includes any or all combinations of the words listed simultaneously. For example, the expression "a or B" or "at least one of a or/and B" may include a, may include B, or may include both a and B.
Expressions (such as "first", "second", and the like) used in various embodiments of the present invention may modify various constituent elements in various embodiments, but may not limit the respective constituent elements. For example, the above description does not limit the order and/or importance of the elements described. The foregoing description is for the purpose of distinguishing one element from another. For example, the first user device and the second user device indicate different user devices, although both are user devices. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of various embodiments of the present invention.
It should be noted that: if it is described that one constituent element is "connected" to another constituent element, the first constituent element may be directly connected to the second constituent element, and a third constituent element may be "connected" between the first constituent element and the second constituent element. Conversely, when one constituent element is "directly connected" to another constituent element, it is understood that there is no third constituent element between the first constituent element and the second constituent element.
The terminology used in the various embodiments of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the various embodiments of the invention. As used herein, the singular forms are intended to include the plural forms as well, unless the context clearly indicates otherwise. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which various embodiments of the present invention belong. The terms (such as those defined in commonly used dictionaries) should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein in various embodiments of the present invention.
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not used as limitations of the present invention.
Example 1
Fig. 1 is a flow chart of a water environment treatment method based on a sponge city concept in the embodiment. As shown in the figure: the method comprises the following steps:
step 1: recognizing ecological plates around the city, and dividing the sponge city land parcels according to the ecological plates. The method specifically comprises the following steps:
classifying ecological plates around the city according to landform characteristics, such as forest meadows, rivers and lakes, wetlands, water conservation areas, farmlands and fields; according to important living beings habitats, treasure animal protection areas, natural heritage and landscape resource distribution areas, geological disaster risk identification areas and water resource protection areas, ecological plates around cities are classified according to functions. It should be noted that the structural features of the farmland, the field and the plates are not necessarily of a single type, and are mostly in a mixed and blended state; all natural plates and natural water systems which have great influence on the surface runoff can be brought into water resource ecological plates, and the plates which have the greatest hydrological influence need to be strictly identified and protected.
Step 2: and (3) implementing water seepage-drainage engineering on each urban land, so that rainwater permeates into the underground of the city, and replenishing urban underground water sources. The method specifically comprises the following steps: by means of the penetration measures of arranging the vegetation buffer zone, paving the vegetation buffer zone in a permeable way, constructing the sunken green land, constructing the penetration system, constructing the grass planting ditch and the like, part of rainwater can penetrate into the underground of the city, and underground water resources of the urban area are supplemented, so that the problem of decline of the underground water level of the city is effectively relieved, and the underground water level of the city is improved.
Considering that the application region designed by the invention is the special topography and landform and rainfall characteristics of the southwest region, the most ground in the existing city is a concrete impervious layer, so how to fully utilize excessive rainfall to supplement urban underground water sources, and the rainfall in the southwest region is abundant, the invention designs a multistage buffer type infiltration system, as shown in fig. 2, the infiltration system is arranged in a to-be-infiltrated area of the city by a plurality of infiltration devices in an array manner, piles are driven downwards from a concrete layer 9 on the ground to vertically penetrate each infiltration device to a sandstone layer 8, and rainwater on the ground is infiltrated to the sandstone layer 8 through the infiltration devices to supplement the urban underground water sources;
as shown in fig. 2 and 3, the infiltration device comprises an infiltration body 1 and an infiltration matrix 2, wherein the infiltration body 1 is arranged on the infiltration matrix 2, the top of the infiltration body 1 is level with the ground, and the lower part of the infiltration matrix 2 extends to a sandstone layer 8;
the permeable substrate 2 is a cylindrical and hollow structure, the permeable body 1 is a circular arc-shaped structure with an upward arc-shaped opening, a cover body 3 is arranged on the permeable body 1, a plurality of first water seepage holes 4 are arranged on the cover body, and a plurality of second water seepage holes 5 leading to the permeable substrate 2 are arranged on the permeable body 1; a plurality of third seepage holes 6 are formed in the bottom of the seepage matrix 2; the permeable matrix 2 is filled with a water permeable material; the outer wall surface of the infiltration base body 2 is provided with reinforcing rib bodies 7 along the circumferential direction and the axial direction, so that the basic strength of infiltration is enhanced, and the stability of the infiltration is improved.
According to the structural design, the three-level water seepage holes are fully utilized to buffer rainwater to slowly permeate underground, and the arc-shaped design of the permeating body is matched with the cylindrical design of the permeating matrix, so that the rainwater can be fully utilized; the water seepage material in the permeable matrix can adopt fine particle sand stone which can infiltrate rainwater and has a purifying effect on water, and the permeable matrix is supported to prevent the permeable matrix from cracking and prevent the permeable device from being blocked by impurities.
In addition, according to the different shapes of the water seepage area, different layouts can be carried out on the infiltration device, including but not limited to the following forms:
(1) as shown in fig. 4, when the water to be permeated areas are distributed in a rectangular shape, a plurality of permeation devices are sequentially distributed at equal intervals along the long side of the rectangular shape;
(2) when the areas to be infiltrated are distributed in a circular shape, the plurality of infiltration devices are arranged along the direction of scattered rays along the circle center in an emission manner.
And step 3: and (3) implementing water storage-water retention engineering on each urban land, storing clean rainwater and making a branch flow partially rainwater. The method specifically comprises the following steps: under the condition that the problem of urban water shortage is prominent, rainwater is cleaned by arranging a rainwater tank, building a reservoir, building a regulation pond and building a rainwater garden to accumulate part of rainwater. Meanwhile, the regulation and storage tank and the rainwater garden can be built to branch partial rainwater, so that the peak flow is reduced, the pressure of a drainage pipeline is relieved, the problem of urban waterlogging is reduced, and overflow pollution is controlled.
And 4, step 4: and (4) performing water purification-water utilization engineering on each urban land, and relieving the water utilization pressure of urban tap water. The method specifically comprises the following steps: the stored rainwater is used for urban greening and road sprinkling, and further urban water shortage distress is relieved. After the rainwater stored is purified by reasonable purification measures, the rainwater is used for flushing toilets, washing vehicles and the like, so that the using amount of tap water is reduced, and the problem of water shortage in cities is further alleviated.
Further, the construction method of the water seepage-drainage engineering, the water storage-water retention engineering and the water purification-water use engineering comprises the following steps:
construction preparation: firstly, determining the central line of a rainwater collection system and the positions of auxiliary structures according to a construction drawing and measurement of a pay-off pile before excavation, checking the elevation of a temporary water earning point, measuring and placing the side line of an excavation pit, heaping soil, a stacking boundary and the range of a temporary sidewalk, and indicating the excavation side line by using a lime line according to the determined excavation width of the upper opening of the foundation pit; and simultaneously measuring and setting the original ground elevation, initially determining the excavation depth through the designed base elevation, and rechecking the elevation. And secondly, after combined measurement and rechecking, the temporary level point and the rainwater collecting pool axis control pile are arranged on a firm building which is convenient to observe, a backup control point is needed, and protective measures are taken to prevent damage.
Well point dewatering: burying well point pipe around the foundation pit and deep into the water-containing layer, connecting the upper end of well point pipe with the collector pipe through connecting bent pipe, connecting the collector pipe with vacuum pump and centrifugal pump again, starting pumping equipment, groundwater just under the effect of vacuum pump suction, well strainer gets into well point pipe and collector pipe, after the exhaust air, is discharged by the drain pipe of centrifugal pump, makes groundwater level reduce.
Excavation of a foundation pit: and (5) adopting a manual matching mechanical excavation method for construction. And (4) excavating by using an excavator according to the calculated size, bottom width and excavation depth, excavating to a position 20cm away from the designed substrate elevation, stopping mechanical excavation, and manually picking up the bottom to the designed elevation.
Laying of lower wrapping: after the foundation construction is finished, the anti-seepage geomembrane is longitudinally unfolded along the side wall of the groove and temporarily fixed, then the geotextile is laid and longitudinally unfolded along the side wall of the groove to form a U shape and is attached to the inner wall of the pipe duct, and the integral ditch is paved to require the geomembrane to form a whole.
Rainwater filters well location installation:
and determining the installation position of the rainwater filtering well according to the measurement and positioning to carry out foundation excavation, wherein the foundation is tamped by original soil, the compactness is more than or equal to 90, the rainwater filtering well is a PE (polyethylene) finished well, the well diameter is 700mm, and the rainwater filtering well is filtered by a sewage interception hanging basket device.
Assembling a penetration channel: the infiltration channel is made of PP raw material, the PP infiltration channel is blue, the size of each monomer is 1150mm multiplied by 795mm multiplied by 500mm, and the pressure bearing is more than or equal to 0.20N/mm2The volume was 0.3L and the individual weight was 11 KG. Two ends adopt bidirectional fastenerThe bottle is connected.
Laying an upper wrapping: after the infiltration channels are spliced, geotextile is laid around the infiltration channels, the width of the geotextile is enough to wrap the infiltration channels, and then broken stones are filled outside the infiltration channels, wherein the thickness of the geotextile is 200 mm.
The water distribution pipe is connected: the rainwater filter well is connected with the infiltration channel connecting pipe through a HDPE pipe heat-shrinkable sleeve.
Laying an inspection pipeline, an exhaust pipeline and an overflow pipe: the inspection pipeline adopts a PE pipeline, and the pipe diameter is DN 500. The exhaust pipe cushion adopts a PE pipe, the pipe diameter is DN200, the ventilation cap is 200mm higher than the ground, and the overflow pipe adopts a PE overflow pipe, the pipe diameter is DN 150.
Backfilling earthwork: and (4) backfilling raw soil at the finished thickness of the exhaust pipe of the inspection pipe, selecting the raw soil with good soil quality, backfilling the raw soil layer by layer to a designed height, wherein the thickness of the virtual pavement is not more than 20cm, and backfilling manually, wherein the backfilling cannot be realized by adopting mechanical bulldozing.
Example 2
As shown in fig. 1 to 4, the present embodiment is different from embodiment 1 in that the present invention provides an aquatic environment treatment system based on a sponge city concept, the treatment system including:
the ecological plate identification module is used for identifying ecological plates around a city and implementing different water environment treatment projects on the city according to the ecological plates; the water environment treatment engineering comprises water seepage-drainage engineering, water storage-stagnant water engineering and water purification-utilization engineering;
the water seepage-drainage engineering module is used for infiltrating rainwater into the underground of a city and supplementing an underground water source of the city;
the water storage-stagnant water engineering module is used for storing clean rainwater and rainwater of branch flow parts;
the water purification-utilization engineering module is used for relieving the water utilization pressure of urban tap water;
the water seepage-drainage engineering module comprises a vegetation buffer zone, a permeable pavement, a sunken green land construction, a permeation system construction and a grass planting ditch construction;
the infiltration system is formed by arraying a plurality of infiltration devices in an urban area to be infiltrated, a pile is driven downwards from a concrete layer 9 on the ground to vertically penetrate each infiltration device downwards to a sandstone layer 8, and rainwater on the ground is infiltrated to the sandstone layer 8 through the infiltration devices to supplement urban underground water sources;
the infiltration device comprises an infiltration body 1 and an infiltration matrix 2, wherein the infiltration body 1 is arranged on the infiltration matrix 2, the top of the infiltration body 1 is flush with the ground, and the lower part of the infiltration matrix 2 extends to a sandstone layer 8;
the permeable substrate 2 is a cylindrical and hollow structure, the permeable body 1 is a circular arc-shaped structure with an upward arc-shaped opening, a cover body 3 is arranged on the permeable body 1, a plurality of first water seepage holes 4 are arranged on the cover body, and a plurality of second water seepage holes 5 leading to the permeable substrate 2 are arranged on the permeable body 1; a plurality of third seepage holes 6 are formed in the bottom of the seepage matrix 2; the permeable matrix 2 is filled with a water permeable material; the outer wall surface of the infiltration matrix 2 is provided with reinforcing rib bodies 7 along the circumferential direction and the axial direction.
According to the structural design, the three-level water seepage holes are fully utilized to buffer rainwater to slowly permeate underground, and the arc-shaped design of the permeating body is matched with the cylindrical design of the permeating matrix, so that the rainwater can be fully utilized; wherein the infiltration material in the infiltration base member can adopt the fine particle rubble, and the fine particle rubble can infiltrate the rainwater, has the purification effect to water simultaneously, plays the supporting role to the infiltration base member simultaneously, prevents that the infiltration base member from breaking, has also prevented that penetrant unit from being blockked up by debris.
In addition, according to the different shapes of the water seepage area, different layouts can be carried out on the infiltration device, including but not limited to the following forms:
(1) when the areas to be permeated are distributed in a rectangular shape, a plurality of permeation devices are sequentially distributed at equal intervals along the long side of the rectangle;
(2) when the areas to be infiltrated are distributed in a circular shape, the plurality of infiltration devices are arranged along the direction of scattered rays along the circle center in an emission manner.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A water environment treatment method based on a sponge city concept is characterized by comprising the following steps:
recognizing ecological plates around a city, and implementing different water environment treatment projects on the city according to the ecological plates;
the water environment treatment engineering comprises water seepage-drainage engineering, water storage-water retention engineering and water purification-water consumption engineering;
the water seepage-drainage engineering is used for infiltrating rainwater into the underground of a city and supplementing an underground water source of the city;
the water storage-water retention project is used for storing clean rainwater and rainwater in branch flow parts;
the water purification-utilization engineering is used for relieving the water utilization pressure of urban tap water.
2. The method for treating the water environment based on the sponge city concept according to claim 1, wherein the method for dividing the sponge city plots comprises the following steps:
classify the surrounding ecological plate in city according to the landform characteristic, include: forest meadows, rivers and lakes, wetlands, water conservation areas, farmlands and fields;
classify the surrounding ecological plate of city according to the function, include: important living creature habitats, conservation areas of valuable animals, distribution areas of natural heritage and landscape resources, risk identification areas of geological disasters and water resource conservation areas.
3. The method for treating the water environment based on the sponge city concept as claimed in claim 1, wherein the water seepage-drainage engineering comprises: the method comprises the steps of arranging a vegetation buffer zone, paving in a permeable way, building a sunken green land, building a permeable system and building a grass planting ditch.
4. The method for treating the water environment based on the sponge city concept as claimed in claim 3, wherein the infiltration system is formed by arranging a plurality of infiltration devices in an array in an area to be infiltrated in the city, piling the infiltration devices from a concrete layer on the ground downwards to penetrate each infiltration device vertically downwards to a sandstone layer, and infiltrating rainwater on the ground into the sandstone layer through the infiltration devices to supplement the urban underground water source;
the infiltration device comprises an infiltration body (1) and an infiltration matrix (2), wherein the infiltration body (1) is arranged on the infiltration matrix (2), the top of the infiltration body (1) is flush with the ground, and the lower part of the infiltration matrix (2) extends to a sandstone layer;
the permeable substrate (2) is a cylindrical hollow structure body, the permeable body (1) is a circular arc-shaped structure body with an upward arc-shaped start, a cover body (3) is arranged on the permeable body (1), a plurality of first water seepage holes (4) are formed in the cover body, and a plurality of second water seepage holes (5) leading to the permeable substrate (2) are formed in the permeable body (1); a plurality of third water seepage holes (6) are formed in the bottom of the permeable matrix (2); and the infiltration matrix (2) is filled with water infiltration materials.
5. The method for treating the water environment based on the sponge city concept as claimed in claim 4, wherein the outer wall surface of the permeable matrix (2) is provided with reinforcing ribs (7) along the circumferential direction and the axial direction.
6. The method for treating the water environment based on the sponge city concept according to claim 4, wherein when the area to be permeated is in a rectangular distribution, a plurality of permeation devices are sequentially arranged at equal intervals along the long side of the rectangle;
when the areas to be infiltrated are distributed in a circular shape, the plurality of infiltration devices are arranged along the direction of scattered rays along the circle center in an emission manner.
7. The method for treating the water environment based on the sponge city concept as claimed in claim 1, wherein the impoundment-impoundment project comprises: setting a rainwater tank, building a reservoir, building a regulation and storage pool and building a rainwater garden.
8. The method for treating the water environment based on the sponge city concept as claimed in claim 1, wherein the water purification-use engineering comprises: urban greening and road surface cleaning are carried out by utilizing the stored rainwater; purifying the stored rainwater, and using the purified rainwater as public water.
9. The method for treating the water environment based on the sponge city concept as claimed in claim 1, wherein the construction methods of the water seepage-drainage engineering, the water storage-retention engineering and the water purification-utilization engineering comprise: well point dewatering, foundation pit excavation, lower portion parcel laying, rainwater filter well location installation, infiltration canal assembly, upper portion parcel laying, water distribution pipe connection, detection pipeline, exhaust pipeline and overflow pipe laying and earthwork backfilling.
10. A treatment system for an aquatic environment treatment method based on the concept of sponge city as claimed in any one of claims 1 to 9, wherein the treatment system comprises:
the ecological plate identification module is used for identifying ecological plates around a city and implementing different water environment treatment projects on the city according to the ecological plates; the water environment treatment engineering comprises water seepage-drainage engineering, water storage-water retention engineering and water purification-water consumption engineering;
the water seepage-drainage engineering module is used for infiltrating rainwater into the underground of a city and supplementing an underground water source of the city;
the water storage-stagnant water engineering module is used for storing clean rainwater and rainwater of branch flow parts;
the water purification-utilization engineering module is used for relieving the water utilization pressure of urban tap water;
the water seepage-drainage engineering module comprises a vegetation buffer zone, a permeable pavement, a sunken green land construction, a penetration system construction and a grass planting ditch construction;
the penetration system is arranged in an urban area to be penetrated by a plurality of penetration devices in an array manner, a pile is driven downwards from a concrete layer on the ground to vertically penetrate each penetration device downwards to a sandstone layer, and rainwater on the ground penetrates into the sandstone layer through the penetration devices to supplement urban underground water sources;
the infiltration device comprises an infiltration body (1) and an infiltration matrix (2), wherein the infiltration body (1) is arranged on the infiltration matrix (2), the top of the infiltration body (1) is flush with the ground, and the lower part of the infiltration matrix (2) extends to a sandstone layer;
the permeable substrate (2) is a cylindrical hollow structure body, the permeable body (1) is a circular arc-shaped structure body with an upward arc-shaped start, a cover body (3) is arranged on the permeable body (1), a plurality of first water seepage holes (4) are formed in the cover body, and a plurality of second water seepage holes (5) leading to the permeable substrate (2) are formed in the permeable body (1); a plurality of third water seepage holes (6) are formed in the bottom of the permeable matrix (2); the infiltration matrix (2) is filled with water infiltration materials; the outer wall surface of the infiltration matrix (2) is provided with reinforcing rib bodies (7) along the circumferential direction and the axial direction.
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