CN107100227B - A kind of pergola on the city road LID biology delay ditch construction method - Google Patents
A kind of pergola on the city road LID biology delay ditch construction method Download PDFInfo
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- CN107100227B CN107100227B CN201710283195.9A CN201710283195A CN107100227B CN 107100227 B CN107100227 B CN 107100227B CN 201710283195 A CN201710283195 A CN 201710283195A CN 107100227 B CN107100227 B CN 107100227B
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/02—Methods or installations for obtaining or collecting drinking water or tap water from rain-water
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C11/00—Details of pavings
- E01C11/22—Gutters; Kerbs ; Surface drainage of streets, roads or like traffic areas
- E01C11/221—Kerbs or like edging members, e.g. flush kerbs, shoulder retaining means ; Joint members, connecting or load-transfer means specially for kerbs
- E01C11/223—Kerb-and-gutter structures; Kerbs with drainage openings channel or conduits, e.g. with out- or inlets, with integral gutter or with channel formed into the kerb ; Kerbs adapted to house cables or pipes, or to form conduits
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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
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
- E03F5/06—Gully gratings
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/108—Rainwater harvesting
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/60—Planning or developing urban green infrastructure
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Revetment (AREA)
- Road Paving Structures (AREA)
Abstract
The present invention provides a kind of pergola on the city road LID biologies to be detained ditch construction method, include the following steps: groove and well excavation-plastic product inspection shaft and city planting ductwork connecting tube installation-concrete furrow bank construction-substrate sanding-antiseepage film mat formation-boulder bed paving adds the installation of-HDPE perforated pipe and the permeable handwoven cloth paving-sand filter blanket of cobble filling-lower layer adds the permeable geotextiles paving in paving-upper layer-two sides kerbstone installation-planting soil layer backfill-rain perforaled strainer, well lid installation and rubble barrier belt construction-planting-cleaning and examination.The present invention changes the traditional, drainage pattern to end concentrated in line from source of urban road, while solving draining, it is detained the rainwater health plant in ditch in biology by usually harvesting, rainwater is utilized, and can solve urban heat land effect and play the role of brightening city, beautify the environment.
Description
Technical field
The present invention relates to rainwater treatment technical field, in particular to a kind of pergola on the city road LID biology is detained ditch spread
Work method.
Background technique
With greatly developing for city, urban development is faced with huge environment and resource pressure, builds in city development
While, destroy ecological ontology to a certain extent, upset hydrology function, bring Ecology destruction, water security risk,
The problems such as water environment dirt beam and shortage of water resources, therefore " sponge city " construction theory is come into being.
And traditional urban belt road greening band biology is detained the urban construction mould that ditch gets used to defeating nature, nature remodeling
Formula, for main planning construction theory, as a result causes serious urban disease and ecology with " quickly excluding " and " end concentration " control
Crisis, and sewage be it is in line to end from source, by the way of central drainage, maintenance cost is higher.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of pergola on the city road LID biologies to be detained ditch construction party
Method, the construction method change the traditional, drainage pattern to end concentrated in line from source of urban road, are solving draining
Meanwhile being detained the rainwater health plant in ditch in biology by usually harvesting, rainwater is utilized, and can solve Urban Thermal
Island effect and plays the role of brightening city, beautifies the environment.
The present invention is achieved by the following technical programs.
A kind of pergola on the city road LID biology provided by the invention is detained ditch construction method, comprising the following steps:
1. groove and well excavate: be familiar with construction drawing, excavating sideline gone out according to design working drawing measuring, cleaning ground and
Pipe network, facility, structures, trees, weeds and the waste of the had an impact construction in underground spread out lime line after experience line is qualified
After excavated；
2. plastic product inspection shaft and the installation of city planting ductwork connecting tube: 1. step is completed and after acceptance(check), plastics are installed
Finished product inspection well and city planting ductwork connecting tube first fill out one layer of medium coarse sand bed course of paving in Ji Tushang, and localization examination well well seat center is adjusted
Whole good tube bottom absolute altitude, then takes over installation, the construction method that well seated connection head is connect with city planting ductwork connecting tube should with it is similar
The construction method of the pipeline connection of type joint is consistent, and interface is stuck, without gap；
3. concrete furrow bank is constructed: concreting furrow bank is used, before pouring, the sundries in furrow bank is cleared up, it will
Furrow bank is moistened, concrete vibrating is closely knit, and road head fall is greater than 3%, and uses the staged practice, and overfall is arranged,
Overfall absolute altitude is lower than grade elevation, and setting interval controls with road grade, is placed on boulder bed, overfall bottom absolute altitude is not less than
Sand filter blanket, two sides with concrete furrow bank is whole pours；
4. substrate spreads medium coarse sand bed course: guaranteeing that substrate is smooth before paving medium coarse sand bed course, one layer 50 is uniformly laid in furrow bank
The medium coarse sand of~100mm thickness, laying is smooth, thickness is consistent, and without prominent stone and sundries, clay content is not more than 3%；
5. antiseepage film is mated formation: foundation pit bottom and foundation pit walls are close in antiseepage film paving, and paving is smooth, no wrinkle, along ditch when paving
Slot length direction is segmented paving, is first temporarily fixed at the long side of film on the furrow bank of side with line card, then tight with adhesive bonds
It is close, film is opened up to opposite side furrow bank and is bonded, if groove is wider, when single width film is wide inadequate, a film is separately cut, by other side furrow bank
Film to be opened up to bottom of trench, connecting sewing is finally stayed in into ditch bottom bonding, the seam between film and film uses special welding machine weld bonds,
It is firmly bonded, the seam lap width of film and film is not less than 100mm, and antiseepage film is closely pasted with inspection shaft borehole wall position；
6. boulder bed paving adds: step 5. after, the paving for carrying out boulder bed adds, and is put down gently and is filled out using small-sized machine when paving adds
Material, cobble partial size are 25~40mm, and less than 1%, paving adds to the tube bottom absolute altitude of HDPE perforated pipe clay content；
7. HDPE perforated pipe installation and cobble filling: HDPE perforated pipe installation before, to HDPE perforated pipe nozzle, diameter etc. into
Row checks that the caliber of HDPE perforated pipe is not less than 150mm, carries out aperture in the upper and lower, left and right four direction of tube wall, at least 4
The percent opening of round, 15~20mm of aperture, HDPE perforated pipe is not less than 15%, and when being laid with HDPE perforated pipe, the gradient is not less than
0.05%, after being installed, HDPE perforated pipe upstream port lid seals, surrounding carries out paving with cobble and fills out, and cobble partial size is not
It obtains and is less than HDPE perforated pipe open pore size, and boulder bed thickness is not less than 50mm, boulder bed general thickness to HDPE perforated pipe up and down
Not less than 300mm；
8. the permeable handwoven cloth paving of lower layer: using large-sized permeable geotextiles, geotextiles specification is 150g/m2~
300g/m2, the lap of splice of interface geotextiles is no less than 150mm, and paving is smooth, and both sides abut furrow bank, seamless；
9. sand filter blanket adds paving: step 8. after the completion of, tile one layer of sand filter blanket above it, and fineness modulus is 2.3~3.7,
Consistency of thickness is not less than 100mm；
10. the permeable geotextiles paving in upper layer: repeating step 8.；
The installation of two sides kerbstone: two sides kerbstone is placed on concrete furrow bank, and circular arc then uses 200~400mm
The kerbstone of length splices, and seam crossing stays seam uniformly, and kerbstone intakes gap along driveway longitudinal slope spaced set, gap road
Kerb rainwater gap surrounding diameter 4~8cm cobble making；
The backfill of planting soil layer: soil is uniform, smooth backfill, and sprinkling water after backfill one layer makes its saturation, then backfills down
One layer, soil horizon should not be tamped, and the water holding space after backfilling soil horizon reserves the laying space of coating, from driveway road surface
Height is 200~300mm, is more than 6 months or more barks and leaf using the peeling time；
Rain perforaled strainer, well lid installation and rubble obstruct belt construction: the rain perforaled strainer of overflow port is using the double comb rainwater of finished product
Mouthful, elevation of top is not less than 50~100mm of vegetation cover, and overflow port spacing is 10~25m, inlet for stom water surrounding diameter 4
~8cm cobble making；Inspection shaft well lid uses the mating well lid of finished product, and elevation of top is the same as driveway grade elevation；Rubble barrier
The section of band is triangle, is made of different gradation rubble, and rubble barrier tape both ends use large volume stone, middle section master
It to be made of the different fritter cobblestone of gradation, rubble, admix plain concrete and cobble is fixed, broken both ends and concrete ditch
Wall or kerbstone are closely coupled, and rubble barrier tape elevation of top is lower than driveway grade elevation；
Planting: configuration phytobiocoenose, planting in planting soil layer；
It cleans and checks and accepts: scattered material, spoir, sandstone, the sundries of construction site are cleared, swept and cleaned,
Final acceptance of construction is carried out later.
1. the step is divided into following steps:
(1.1) before channel excavation, digging mode, route, sequence, absolute altitude, gradient situation are determined, bottom of trench head fall is with road
Road longitudinal slope；
(1.2) when excavating, interim mound or apply other loads and must not influence the stability of pit slot side slope, mound height and
Its distance away from well edge is executed by job specfication.
It is described in the higher area of level of ground water or when being constructed in rainy season, using draining or reducing water level measure, constructing
When level of ground water is down to substrate minimum point 500mm hereinafter, must not be impregnated by water in pit slot, if being immersed in water, first by water
It excludes, then removes the soil layer impregnated, change by design and code requirement and filled out processing.
The substrate and side slope are there is not allowed that the case where backbreaking with base soil by disturbance, when using mechanical excavation, close to substrate
And side slope 200mm thick soil stratum is by manually being excavated, clear bottom, repairs slope and levelling.
The plastic inspection well and city planting ductwork connecting tube are necessarily mounted on the base soil for meeting design requirement, or are being opened
Through handling on closely knit ground after digging.
The HDPE perforated pipe uses crane lifting, and for crane away from limes marginis at least 2m, use is manually installed, in HDPE perforated pipe
Heart line is controlled with sideline method, and connection is docked using thermofussion welding.
The stepIn soil permeability coefficient be 3 × 10-6~1 × 10-5M/s, penetrating power are not less than 25cm/h,
PH is 5.5~6.5, and the content of organic matter is 3.0%~5.0%, and clay < 10%, slity soil is 30%~55%, and sandy soil is
35%~60%, when configuration soil pH value is unsatisfactory for requiring, it is adjusted using lime, sulphur powder, ferrous sulfate or alum rich water
PH value.
The thickness of the soil horizon is not less than 600mm, and herbal planting soil thickness degree is not less than 600mm, shrub
Planting soil thickness degree be not less than 900mm, the planting soil thickness degree of arbor is not less than 1200mm.
The beneficial effects of the present invention are:
1. reducing Water Environmental Pollution Control by rainwater resources utilization, pollution sources prevention and treatment, the alleviation of waterlogging disaster etc. to take
With and urban waterlogging caused by huge loss.
2. relying on elements infiltration, water storage, draining, the engineering construction amount of pumping equipment is greatly reduced, fortune is reduced
Row maintenance requirement and cost can quickly repair Urban Water Ecological Environment.
3. bringing comprehensive ecological environmental benefit, hence it is evident that increase city " indigo plant ", " green " space, reduce tropical island effect, improve people
Habitat environment provides habitat for more biologies, plant, it is horizontal to improve Urban Biodiversity.
4. reducing urban heat land effect, road surface rain rear surface is non-slip without ponding, guarantees pedestrian and vehicle safety, under layer
Moisture is under sunlight irradiation, slow evaporation, plays the role of adjusting ground temperature and humidity.
5. improving the environment of urban plant growth, the ventilative raising of soil permeability, soil drinking water rate is improved, and temperature reduces,
The utilization rate of soil nutrient improves, conducive to the growth of plant.Economize on resources natural rainfall, raises underground water, reduces trees and irrigates
Water consumption accomplishes the recycling of resource.
6. being conducive to promotion of city image, have the characteristics that subtract dirt, noise reduction, and the harmony of unique decorative effect and the Nature
It is unified, it is the construction indispensable component part of Construction of Eco-urban.
Detailed description of the invention
Fig. 1 is construction process figure of the present invention；
Fig. 2 is inspection shaft organigram of the present invention；
Fig. 3 is overflowing rain water well construction schematic diagram of the present invention；
Fig. 4 is present invention interval with road grade control structure schematic diagram；
Fig. 5 is kerbstone water inlet gap structural schematic diagram of the present invention；
Fig. 6 is rubble barrier tape structural schematic diagram of the present invention.
Specific embodiment
Be described further below technical solution of the present invention, but claimed range be not limited to it is described.
As described in Figure 1, a kind of pergola on the city road LID biology is detained ditch construction method, includes the following steps:
1. groove and well excavate
1.1 fully understand construction site situation, cleaning on the ground and the pipe network of the had an impact construction in underground, facility, structures,
Trees, weeds and waste etc..
1.2 are familiar with construction drawing, go out excavating sideline after experience line is qualified according to design working drawing measuring and spread out lime line
It can just be excavated.
Before 1.3 channel excavations must determine digging mode, route, sequence, absolute altitude, the gradient situations such as, bottom of trench head fall with
Road longitudinal grade.
1.4 when excavating, and interim mound or applies other loads and must not influence the stability of pit slot side slope, mound height and its
Distance away from well edge presses associated construction regulation enforcement.
The higher area of 1.5 levels of ground water or when being constructed in rainy season, should have draining or reduce the measure of water level, and when construction answers
Level of ground water is down to substrate minimum point 500mm or less.It must not be impregnated by water in pit slot, as being immersed in water when construction, be answered
First water is excluded, then removes the soil layer impregnated, change by design and corresponding code requirement and is filled out processing.
1.6 substrates and side slope are there is not allowed that the case where backbreaking with base soil by disturbance, when using mechanical excavation, close to substrate and
Side slope 200mm thick soil stratum by manually being excavated, clear bottom, repair slope and levelling.
2. plastic product inspection shaft and the installation of city planting ductwork connecting tube
2.1 can carry out plastic product inspection shaft and city planting ductwork company after groove and well excavate completion and acceptance(check)
The installation of adapter tube, plastic inspection well and pipeline are necessarily mounted on the base soil for meeting design requirement, or through handling after excavation
On closely knit ground, inspection shaft construction is as shown in Figure 2.
2.2 plastic product inspection shafts and city planting ductwork connecting tube must fill out paving a layer thickness in Ji Tushang in a pre-installation and be
The medium coarse sand bed course of 100mm.
2.3 first localization examination well well seat centers, adjust tube bottom absolute altitude, then take over installation.
The construction method one that the construction method that 2.4 well seated connection heads are connect with pipeline should be connect with the pipeline of similar type joint
It causes.The gradient of connecting pipe will meet design or code requirement, and junction will ensure firm non-leakage.
3. concrete furrow bank is constructed
3.1 concrete furrow banks and overflowing rain water well are concrete structure, and strength grade of concrete presses design requirement, template
Position, absolute altitude and the size of installation will meet design requirement, and falsework wants reliable and stable, and piece is tight, and template installation is wanted
There are corresponding design and checking computations, overflowing rain water well construction is as shown in Figure 3.
If the design of 3.2 pavement of road has head fall, concrete groove and furrow bank change with grade elevation, if road
Head fall is greater than 3%, using the staged practice, overfall is arranged, overfall absolute altitude is lower than grade elevation 200mm, between setting
It controls every with road grade, as shown in figure 4, overfall concrete strength, with concrete furrow bank, overfall wall thickness is 150mm, sets
In on boulder bed, bottom absolute altitude must not be lower than sand filter blanket, two sides with concrete furrow bank is whole pours.
3.3 preferably use commerical ready-mixed concrete to be poured, and before pouring, should clean out the sundries etc. in template, by mould
Plate is moistened, and checks whether set aside pre-embedded situation meets design requirement.
3.4 concrete vibratings want closely knit, must not there is the mass defects such as honeycomb, hole, swollen mould, slag inclusion.
3.5 carry out the maintenance work of concrete and finished product protection work in time.
4. substrate sanding
To prevent the sharp rock ballast of substrate from damaging impervious barrier, therefore it is laid with before impervious barrier is constructed in one layer of 50~100mm thickness
Coarse sand.The sand material of use answers the hard cleaning of quality, and gradation is good, and clay content is not more than 3%.Substrate is answered smooth before sanding, without prominent
Uniform ground is answered in stone and sundries out, laying, and thickness is consistent, and the gradient meets design requirement.
5. antiseepage film paving
5.1 antiseepage film pavings should be close to foundation pit bottom and foundation pit walls, and appropriateness is tensioned, and paving is smooth, should not there is fold.When paving
It is segmented paving along trench length direction, section length regards groove width and camber determines, first that the long side of film is temporarily solid with line card
It is scheduled on the furrow bank of side, then tight with adhesive bonds, opens up film to opposite side furrow bank and bonds.If groove is wider, single width film is wide
When inadequate, a film is separately cut, opens up film from other side furrow bank to bottom of trench, connecting sewing is finally stayed in into ditch bottom bonding.Film with
Seam between film should use special welding machine weld bonds, be firmly bonded and should not have leakage phenomenon, and the seam of film and film is taken
It connects width and is typically no less than 100m.
5.2 antiseepage films should be connect well with inspection shaft borehole wall position, it is ensured that junction is impermeable.
5.3 operating personnels should protect antiseepage film in construction and should reduce to the greatest extent on film surface after the completion of antiseepage film is laid with
Walk, move tool etc., it is all the object that antiseepage film causes damages should not to be placed on film or be carried and walked on film, with
Exempt to cause accidental injury to film, if discovery has breakage, should repair in time.
6. boulder bed fills out paving
6.1 cobble partial sizes, which should meet design requirement, should be 25~40mm, clay content should be less than 1% when design is not known.
After 6.2 impervious barrier pavings are complete, carry out boulder bed fills out paving, puts down filler gently filling out the appropriate to the occasion use small-sized machine of paving, no
Directly topple over and throwing, manually when constructing on impervious barrier must corresponding safeguard procedures, in order to avoid destroy impervious barrier.
It should be filled out by mono- layer of progress place Min layers of 300mm when 6.3 boulder bed.There must not be the entrance of the sundries such as soil, leaf when construction
In boulder bed, filled out at paving to the tube bottom absolute altitude of HDPE perforated pipe according to the design grade of perforated pipe.
7. the installation of HDPE perforated pipe and cobble filling
7.1 pipelines in a pre-installation, answer line up, diameter etc. to be checked, the caliber of HDPE perforated pipe is not less than 150mm,
Aperture (at least 4 rounds) generally are carried out in the upper and lower, left and right four direction of tube wall, 15~20mm of aperture, pitch-row 100mm are worn
The percent opening of hole pipe is not less than 15%.
When 7.2 laying perforated pipe, the gradient should meet design requirement, and generally with road grade, when designing no requirement (NR), the gradient is not
Less than 0.05%, when construction, must not have soil block, leaf etc. to enter in perforated pipe.
7.3 groove depths can also pass to trench bottom construction personnel's down tube by manually lifting pipe by manually shouldering slot under pipe when little,
When using lifting, crane avoids limes marginis collapsing away from limes marginis at least 2m.
7.4 Pipe installings be it is manually installed, pipe centerline using sideline method control, connection using thermofussion welding dock, connect
Code requirement should be met by connecing quality.After pipe joint, the elevation and axis of Ying Fuhe pipeline comply with requirement.
After the completion of 7.5 Pipe installings, perforated pipe upstream port should use lid seals, and pipeline surrounding is spread with cobble
It fills out, cobble partial size cannot be less than pipeline tapping aperture, and cobble paving raising degree should meet designed elevation, and boulder bed above and below perforated pipe
Thickness is not less than 50mm, and boulder bed general thickness is not preferably less than 300mm.
8. the permeable geotextiles paving of lower layer
8.1 use the permeable geotextiles of larger size as far as possible, and geotextiles specification is 150g/m2~300g/m2(ordinary circumstance
It is down 200g/m2), geotextiles reduce overlap joint number to the greatest extent, and the lap of splice of interface geotextiles is no less than 150mm.
8.2 geotextiles answer paving smooth, and both sides abut furrow bank, it is damaged must not to find that geotextiles occur, in time there are gap
Replacement.
9. sand filter blanket fills out paving
After the geotextiles paving of 9.1 lower layers is complete, fill out one layer of sand filter blanket of paving above it, soil horizon and boulder bed are isolated and
Filtration, sand filter blanket select clean building medium coarse sand, and fineness modulus should be 2.3~3.7, and sand filter blanket thickness is wanted by design
It asks, such as designs no requirement (NR), ordinary circumstance is thick not less than 100mm.
9.2 sand filter blankets, which should be spread, to be filled and led up whole, and integral thickness control is consistent.
10. the permeable geotextiles paving in upper layer
Repeat step 8..
The installation of two sides kerbstone
11.1 two sides kerbstones are placed on concrete furrow bank, should first check whether concrete furrow bank axis and absolute altitude meet
Design requirement, and proofread.
The specification of 11.2 kerbstones presses design requirement, and meeting circular arc can be used the kerbstone spelling of 200-400mm length
Connect, it is ensured that circular arc it is smooth, kerbstone disposes absolute altitude with road elevation, and installation will steadily securely, and seam crossing stays seam uniformly, jointing
Full, clear, side angle is uniform, beautiful.
11.3 kerbstones intake gap (other opening forms can also be used) along driveway longitudinal slope spaced set, gap
Be 4.5m to medium spacing, gap kerbstone rainwater gap surrounding diameter 4~8cm cobble making to filter dregs, kerbstone into
Water gap structure is as shown in Figure 5.
The backfill of planting soil layer
Design requirement is pressed in the configuration of 12.1 soil, and when designing no requirement (NR), infiltration coefficient is 3 × 10-6~1 × 10-5M/s seeps
Saturating ability is not preferably less than 25cm/h, and pH is 5.5~6.5, and the content of organic matter is 3.0%~5.0%, clay < 10%, slity soil
It is 30%~55%, sandy soil is 35%~60%, and the certain earth to be banketed of acquisition does corresponding detection before backfilling, it is ensured that returns
The soil filled out meets design and code requirement.
12.2, when configuration soil pH value is unsatisfactory for requiring, can be used lime, sulphur powder, ferrous sulfate or alum rich water and adjust
Its pH value.
12.3 planting soil thickness degree should be determining according to design requirement and vegetation type, under normal circumstances, the thickness of soil horizon
Degree is not preferably less than 600mm.600mm, the planting soil thickness of shrub are not preferably less than for herbal planting soil thickness degree
Degree is not preferably less than 900mm, and the planting soil thickness degree of arbor is not preferably less than 1200mm.
12.4 soil when backfilling should by every 300mm mono- layer backfilled, sprinkling water after backfill one layer makes its saturation, then backfills
Next layer, soil horizon should not be tamped.
Water holding space after 12.5 backfill soil horizons should reserve the laying space of coating, and overburden cover is generally
100mm, preferably uses the bark and leaf for peeling off that the time is more than 6 months or more, and coating laying is answered uniform, smooth.
The height of soil horizon (coating) from driveway road surface after 12.6 backfills, should be according to plant ability of inundation and soil
Permeance property determines, generally 200~300mm.
Rain perforaled strainer, well lid installation and rubble obstruct belt construction
The rain perforaled strainer of 13.1 overflow ports uses finished product leaf grating for down pipe, and preferably double comb inlets for stom water, elevation of top is not preferably less than
50~100mm of vegetation cover, overflow port spacing are preferably 10~25m, and inlet for stom water surrounding is with diameter 4~8cm cobble making with mistake
Filter residue soil.
13.2 inspection shaft well lids use the mating well lid of finished product, and elevation of top is the same as driveway grade elevation.
The section of 13.3 rubble barrier tape is triangle, and rubble barrier tape is broken by different gradation every 10m setting one
Stone composition, barrier tape both ends use larger volume stone, and middle section is mainly by the different fritter cobblestone of gradation, rubble group
At, admix appropriate plain concrete and cobble be fixed, rubble barrier tape is placed into the soil a layer 50mm, both ends and concrete furrow bank or
Kerbstone is closely coupled.Rubble barrier tape elevation of top is lower than driveway grade elevation 50mm, and rubble obstructs band structure such as Fig. 6 institute
Show.
Planting
14.1 plants configurations should be configured by design requirement, and be planted by corresponding specification.
14.2 plants preferably select resistance to stain, it is resistance to flood, drought-enduring kind, community arrangement should focus on the level of Qiao, filling, grass etc.
Collocation.
It cleans and checks and accepts
15.1 check tests for marching into the arena material, defective material must not come into operation.
The process of 15.2 process qualities is checked and accepted, and previous process checks and accepts the unqualified construction that must not enter next procedure.
Final acceptance of construction after 15.3 pairs of entire Practical Completions, before examination, to the scattered material of construction site, spoir, sandstone,
Sundries etc. is cleared, swept and is cleaned, and management and construction unit is reported to take part in building each side according to design and related specification requirement tissue
Finally checked and accepted.
Embodiment 1
The Chongqing City new district Liang Jiang that our company undertakes the construction of construction, which is pleased, carrys out new city school road second phase road engineering (K0+510.000~K1
+ 441.699), implement starting point and arise from school road pile No. K0+510.000, northwards extend, after the usual friendship of the road Zhong Lilu, Jia Lan, eventually
Only with good haze north of a road side, terminal pile No. K1+441.699, long 931.699m are two-way six-lane, and wide 36m, category of roads is city
City's major trunk roads, desin speed 40km/h.The wide 6m in two sides pavement.The project is used as one of national sponge urban construction pilot,
According to national sponge urban construction requirement, according to house town and country construction portion, " sponge urban construction technical manual --- low influence is opened
Send out storm-water system building (tentative) " etc. technical stipulations and related management method integrate in conjunction with the actual conditions of the Chongqing section Yue Lai
It researchs and analyses, newly-built and part status road is built using low influence development facility (LID) rainwater comprehensive utilization technology.
The project is marched into the arena in September, 2015 to be put into operation, and the project has been completed at present, achieves good social effect.
Claims (8)
1. a kind of pergola on the city road LID biology is detained ditch construction method, it is characterised in that: the following steps are included:
1. groove and well excavate: being familiar with construction drawing, go out excavating sideline, cleaning ground and underground according to design working drawing measuring
It is laggard to spread out lime line after experience line is qualified for pipe network, facility, structures, trees, weeds and the waste of had an impact construction
Row excavates；
2. plastic product inspection shaft and the installation of city planting ductwork connecting tube: 1. step is completed and after acceptance(check), plastic product is installed
Inspection shaft and city planting ductwork connecting tube first fill out one layer of medium coarse sand bed course of paving in Ji Tushang, and localization examination well well seat center is adjusted
Tube bottom absolute altitude, then takes over installation, and the construction method that well seated connection head is connect with city planting ductwork connecting tube should connect with same type
The construction method of the pipeline connection of head is consistent, and interface is stuck, without gap；
3. concrete furrow bank is constructed: using concreting furrow bank, before pouring, clear up the sundries in furrow bank, by furrow bank
Moistened, concrete vibrating it is closely knit, road head fall be greater than 3%, and use the staged practice, be arranged overfall, water blocking
Weir absolute altitude is lower than grade elevation, and setting interval controls with road grade, is placed on boulder bed, and overfall bottom absolute altitude is not less than sand filtration
Layer, two sides with concrete furrow bank is whole pours；
4. substrate spread medium coarse sand bed course: paving medium coarse sand bed course before guarantee substrate it is smooth, be uniformly laid in furrow bank one layer 50~
The medium coarse sand of 100mm thickness, laying is smooth, thickness is consistent, and without prominent stone and sundries, clay content is not more than 3%；
5. antiseepage film is mated formation: foundation pit bottom and foundation pit walls are close in antiseepage film paving, and paving is smooth, no wrinkle, along ditch flute length when paving
It spends direction and is segmented paving, be first temporarily fixed at the long side of film on the furrow bank of side with line card, then tight with adhesive bonds, to
Furrow bank exhibition film in opposite side simultaneously bonds, if groove is wider, when single width film is wide inadequate, a film is separately cut, from other side furrow bank to ditch
Film is opened up at bottom, and connecting sewing is finally stayed in ditch bottom bonding, and the seam between film and film uses special welding machine weld bonds, bonding
Securely, the seam lap width of film and film is not less than 100mm, and antiseepage film is closely pasted with inspection shaft borehole wall position；
6. boulder bed paving adds: step 5. after, the paving for carrying out boulder bed adds, and puts down filler, ovum gently using small-sized machine when paving adds
Stone grain diameter is 25~40mm, and less than 1%, paving adds to the tube bottom absolute altitude of HDPE perforated pipe clay content；
7. the installation of HDPE perforated pipe and cobble filling: before the installation of HDPE perforated pipe, being examined to HDPE perforated pipe nozzle, diameter etc.
It looks into, the caliber of HDPE perforated pipe is not less than 150mm, aperture is carried out in the upper and lower, left and right four direction of tube wall, at least 4 rounds,
The percent opening of 15~20mm of aperture, HDPE perforated pipe is not less than 15%, and when being laid with HDPE perforated pipe, the gradient is not less than 0.05%,
After being installed, HDPE perforated pipe upstream port lid seals, surrounding carries out paving with cobble and fills out, and cobble partial size cannot be less than
HDPE perforated pipe open pore size, and boulder bed thickness is not less than 50mm to HDPE perforated pipe up and down, boulder bed general thickness is not less than
300mm；
8. the permeable handwoven cloth paving of lower layer: using large-sized permeable geotextiles, geotextiles specification is 150g/m2~300g/m2, connect
The lap of splice of geotextiles is no less than 150mm at mouthful, and paving is smooth, and both sides abut furrow bank, seamless；
9. sand filter blanket adds paving: step 8. after the completion of, tile one layer of sand filter blanket above it, and fineness modulus is 2.3~3.7, thickness
Unanimously, it is not less than 100mm；
10. the permeable geotextiles paving in upper layer: repeating step 8.；
The installation of two sides kerbstone: two sides kerbstone is placed on concrete furrow bank, and circular arc then uses 200~400mm length
Kerbstone splicing, seam crossing stay seam uniformly, kerbstone intake gap along driveway longitudinal slope spaced set, gap kerbstone
Rainwater gap surrounding diameter 4~8cm cobble making；
The backfill of planting soil layer: soil is uniform, smooth backfill, and sprinkling water after backfill one layer makes its saturation, then backfills next layer,
Soil horizon should not be tamped, and the water holding space after backfilling soil horizon reserves the laying space of coating, the height from driveway road surface
It is more than 6 months or more barks and leaf using the peeling time for 200~300mm；
Rain perforaled strainer, well lid installation and rubble obstruct belt construction: the rain perforaled strainer of overflow port uses the double comb inlets for stom water of finished product,
Its elevation of top be not less than 50~100mm of vegetation cover, overflow port spacing be 10~25m, inlet for stom water surrounding with diameter 4~
8cm cobble making；Inspection shaft well lid uses the mating well lid of finished product, and elevation of top is the same as driveway grade elevation；Rubble barrier tape
Section be triangle, be made of different gradation rubble, rubble barrier tape both ends use large volume stone, and middle section is main
It is made of the different fritter cobblestone of gradation, rubble, admixes plain concrete and cobble is fixed, rubble barrier tape both ends and mixed
Solidifying soil furrow bank or kerbstone are closely coupled, and rubble barrier tape elevation of top is lower than driveway grade elevation；
Planting: configuration phytobiocoenose, planting in planting soil layer；
It cleans and checks and accepts: scattered material, spoir, sandstone, the sundries of construction site being cleared, swept and cleaned, later
Carry out final acceptance of construction.
2. pergola on the city road LID biology as described in claim 1 is detained ditch construction method, it is characterised in that: the step
Suddenly 1. it is divided into following steps:
(1.1) before channel excavation, determine that digging mode, route, sequence, absolute altitude, gradient situation, bottom of trench head fall are vertical with road
Slope；
(1.2) when excavating, interim mound or apply other loads and must not influence the stability of pit slot side slope, mound height and its away from
The distance at well edge is executed by job specfication.
3. pergola on the city road LID biology as claimed in claim 2 is detained ditch construction method, it is characterised in that: in underground
When water level is higher regional or is constructed in rainy season, using draining or reducing water level measure, level of ground water is down to base in construction
Water if being immersed in water, is first excluded, then removes and impregnated hereinafter, must not be impregnated by water in pit slot by bottom minimum point 500mm
Soil layer, by design and code requirement change and fill out processing.
4. pergola on the city road LID biology as claimed in claim 2 is detained ditch construction method, it is characterised in that: the base
Bottom and side slope are thick native close to substrate and side slope 200mm when using mechanical excavation there is not allowed that the case where backbreaking with base soil by disturbance
Layer by manually being excavated, clear bottom, repair slope and levelling.
5. pergola on the city road LID biology as described in claim 1 is detained ditch construction method, it is characterised in that: the modeling
Material finished product inspection well and city planting ductwork connecting tube are necessarily mounted on the base soil for meeting design requirement, or through handling after excavation
On closely knit ground.
6. pergola on the city road LID biology as described in claim 1 is detained ditch construction method, it is characterised in that: described
HDPE perforated pipe uses crane lifting, and for crane away from limes marginis at least 2m, use is manually installed, HDPE perforation tube hub line sideline method
Control, connection are docked using thermofussion welding.
7. pergola on the city road LID biology as described in claim 1 is detained ditch construction method, it is characterised in that: the step
SuddenlyIn soil permeability coefficient be 3 × 10-6~1 × 10-5M/s, penetrating power are not less than 25cm/h, and pH is 5.5~6.5,
The content of organic matter is 3.0%~5.0%, clay < 10%, and slity soil is 30%~55%, and sandy soil is 35%~60%, when
When configuration soil pH value is unsatisfactory for requiring, its pH value is adjusted using lime, sulphur powder, ferrous sulfate or alum rich water.
8. pergola on the city road LID biology as claimed in claim 7 is detained ditch construction method, it is characterised in that: the soil
The thickness of earth layer is not less than 600mm, and herbal planting soil thickness degree is not less than 600mm, the planting soil thickness of shrub
Degree is not less than 900mm, and the planting soil thickness degree of arbor is not less than 1200mm.
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| CN108547366A (en) * | 2018-04-23 | 2018-09-18 | 交通运输部科学研究院 | A kind of method of arid biogeographic zone highway rainwater-collecting |
| CN108951816B (en) * | 2018-07-10 | 2021-03-23 | 上海佳长环保科技有限公司 | Ecological tree pool system and construction method |
| CN108867691B (en) * | 2018-07-10 | 2020-12-11 | 上海佳长环保科技有限公司 | Rainwater drainage pipe gallery system for grass planting ditch and construction method |
| CN108797757A (en) * | 2018-07-15 | 2018-11-13 | 天津大学 | A kind of buried biological delaying basin and its method for arranging based on original greenbelt |
| CN109183946A (en) * | 2018-10-30 | 2019-01-11 | 西安公路研究院 | A kind of sponge urban biology is detained facility and its construction method |
| CN109837974A (en) * | 2019-03-28 | 2019-06-04 | 昆山润之源环保技术有限公司 | A kind of construction method of rainwater retention device operation |
| CN110056071B (en) * | 2019-05-06 | 2024-05-07 | 济南城建集团有限公司 | Municipal rainwater pipeline assembly module and construction method |
| CN113123421A (en) * | 2021-03-17 | 2021-07-16 | 中建八局第二建设有限公司 | Ecological drought stream with functions of regulation, storage and purification |
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