CN114319556B - Concealed type water purification drainage ditch and construction method thereof - Google Patents
Concealed type water purification drainage ditch and construction method thereof Download PDFInfo
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- CN114319556B CN114319556B CN202210184905.3A CN202210184905A CN114319556B CN 114319556 B CN114319556 B CN 114319556B CN 202210184905 A CN202210184905 A CN 202210184905A CN 114319556 B CN114319556 B CN 114319556B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 81
- 238000010276 construction Methods 0.000 title claims abstract description 35
- 238000000746 purification Methods 0.000 title claims abstract description 22
- 239000004575 stone Substances 0.000 claims abstract description 45
- 238000001914 filtration Methods 0.000 claims abstract description 42
- 239000002689 soil Substances 0.000 claims abstract description 21
- 239000000758 substrate Substances 0.000 claims abstract description 12
- 238000009434 installation Methods 0.000 claims description 13
- 239000004744 fabric Substances 0.000 claims description 9
- 238000009412 basement excavation Methods 0.000 claims description 8
- 239000004576 sand Substances 0.000 claims description 5
- 238000011049 filling Methods 0.000 claims description 4
- 238000007667 floating Methods 0.000 claims description 4
- 239000003292 glue Substances 0.000 claims description 4
- 238000001556 precipitation Methods 0.000 claims description 4
- 241000196324 Embryophyta Species 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 6
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 6
- 239000012535 impurity Substances 0.000 description 4
- 239000004746 geotextile Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
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- 238000000926 separation method Methods 0.000 description 2
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- 241001391944 Commicarpus scandens Species 0.000 description 1
- 241000255925 Diptera Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
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- 230000007613 environmental effect Effects 0.000 description 1
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- 230000006872 improvement Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000005445 natural material Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
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Abstract
The invention relates to the technical field of municipal drainage, in particular to a concealed water purification drainage ditch and a construction method thereof. The drainage ditch comprises a drainage ditch body, wherein water filtering stones are paved at the top of the drainage ditch body, the drainage ditch body is arranged in a foundation soil layer, a supporting filter plate is arranged in the middle layer of the drainage ditch body, the supporting filter plate divides the drainage ditch body into a top filter layer and a bottom water containing layer, and the water filtering stones comprise fine filtering broken stones and coarse filtering broken stones. The construction method comprises the steps of designing and calculating, prefabricating a drainage ditch body, measuring and paying off, excavating earthwork, detecting and leveling a substrate, installing the drainage ditch body, paving filtering materials and backfilling earthwork. The invention combines the drainage ditch with the sponge idea, is suitable for sponge city construction, improves water quality at a water quality source, prevents pollution transfer, increases an overflow function, can pass through a filter layer when rapid drainage is needed, increases drainage efficiency, is buried underground integrally, and reduces environmental pollution and landscape damage only by exposing a small part.
Description
Technical Field
The invention relates to the technical field of municipal drainage, in particular to a concealed water purification drainage ditch and a construction method thereof.
Background
The sponge city concept is actively popularized in various regions of China, the concept of building a sponge city is integrated with different degrees in the development process of each stage of cities, LID (Low Impact Development: low-impact development) facilities are adopted to fully and reasonably utilize rainwater, and the sponge city has good elasticity in the aspects of adapting to environmental changes, coping with natural disasters caused by the rainwater and the like, so that the sponge city can also be called as a 'water elasticity city', and the water treatment of the sponge city comprises various requirements of seepage, stagnation, storage, purification, use, drainage and the like.
At present, the functions of seepage, stagnation and storage in water treatment of sponge cities are relatively perfect, but many defects still exist in the aspects of purification and drainage. The untreated rainwater is collected through a drainage ditch and is directly discharged into a municipal rainwater well, especially, the initial rainwater collected at places such as squares and the like which are easy to be polluted by a non-point source can form point source or non-point source pollution in municipal pipe networks, so that the rainwater in the rainwater pipe networks can reach the discharge standard after being treated by further treatment or improvement treatment technology; whether in a sponge city or a common city, sudden increase of rainwater often causes waterlogging disasters, and when the disasters occur, the ponding needs to be rapidly discharged; the directly exposed sewer pipe orifice can emit odor and breed bacteria and mosquitoes, which affects the sanitation of the city.
Disclosure of Invention
The invention provides a concealed water purification drainage ditch and a construction method thereof, which aim to realize timely purification of rainwater when the rainwater flows into a drainage pipeline and improve drainage efficiency and reduce influence of the drainage pipeline on urban landscapes and sanitation.
On the one hand, the concealed water purification drainage ditch provided by the invention adopts the following technical scheme:
this concealed water purification escape canal, including the escape canal body, drainage stone has been laid at the escape canal body top, the escape canal body sets up in the foundation soil layer, the escape canal body top is leveled with the LID facility top in both sides, the escape canal body intermediate level is provided with the support filter plate, the support filter plate falls into the escape canal body top filter layer and two parts of the excessive water layer in bottom, drainage stone includes fine filtration rubble and coarse filtration rubble.
Through adopting above-mentioned technical scheme, filter the water that flows into drainage pipe through laying drainage stone at drainage ditch body top and filter the aquatic impurity that reduces, fine filtration rubble and coarse filtration rubble carry out double filtration to the water, and the clearance of coarse filtration rubble is great simultaneously, can absorb moisture fast, and furthest does not influence drainage ability when providing filtering capability.
Preferably, overflow plates are arranged on two sides of the top of the drainage ditch body, a water passing groove is formed between the overflow plates and the drainage ditch body, the top of the water passing groove is communicated with the filter layer through a top water passing sieve, and the bottom of the water passing groove is communicated with the water containing layer through a bottom water passing sieve.
Through adopting above-mentioned technical scheme, the overflow that the overflow plate was used for the drainage needs in time to discharge when the rainfall increases suddenly, and the top of accessible overflow plate crosses the water sieve and the bottom crosses the water sieve and directly discharges into escape canal body bottom from the basin, increases municipal drainage system and faces the waterlogging-preventing ability of strong precipitation.
Preferably, the filter layer further comprises a filter cover soil disposed between the fine filter crushed stone and the coarse filter crushed stone, the coarse filter crushed stone being at the top.
Through adopting above-mentioned technical scheme, filter the earthing and be favorable to adhering to fine filtration rubble and coarse filtration rubble, reduce fine filtration rubble and coarse filtration rubble and mix each other, influence filter effect, filter the earthing simultaneously and be favorable to improving filter effect, have the effect of water retention and reduction moisture evaporation.
Preferably, a permeable geotechnical cloth is paved between the support filter plate and the filter layer, two sides of the permeable geotechnical cloth extend to be clung to the inner side of the drainage ditch, and the support filter plate is placed on a supporting block on the inner side surface of the drainage ditch.
Through adopting above-mentioned technical scheme, the geotechnique cloth that permeates water is used for the separation drainage building stones to fall into the bottom of the escape canal body, and the riding block is used for installing and supporting the filter plate, easy to assemble and dismantles and support the filter plate.
Preferably, the drainage ditch body top is provided with the drainage plate, drainage plate outside border is fixed at LID facility top, drainage plate inside border is crooked downwards towards the internal portion of drainage ditch.
Through adopting above-mentioned technical scheme, the drainage plate prevents its subsidence with the fixed escape canal body of too much, has drainage water-guiding effect simultaneously, enlarges the diversion area, and the guide rivers are filtered in the filter layer.
On the other hand, the invention provides a construction method of a concealed water purification drainage ditch, which comprises the following construction steps:
step one: calculating the cross-sectional area of the drainage ditch according to the rainfall intensity and the precipitation amount of the construction site, prefabricating the drainage ditch body in sections according to the designed cross-sectional shape of the drainage ditch, measuring and paying off on site, and marking the construction site and the construction section;
step two: performing earth excavation according to the marked construction sites and construction intervals, performing leveling treatment on the formed substrate after the earth excavation is completed, and detecting the depth and gradient of the substrate;
step three: installing a prefabricated drainage ditch body in the base, detecting the angle and the height between the drainage ditch body and the ground after the installation is completed, and adjusting the drainage ditch body to be parallel to the ground of the LID facility and the top to be level with the ground of the LID facility;
step four: sequentially installing and paving a support filter plate, permeable geotextile, fine filter crushed stone and coarse filter crushed stone in the installed and adjusted drainage ditch body, wherein the top of the coarse filter crushed stone is level with the ground of the LID facility, and detecting the water passing efficiency of the installed drainage ditch;
step five: and (3) performing earth backfill at the edge of the top of the drainage ditch body, repairing the earth structure of the edge and tamping to be smooth.
Through adopting above-mentioned technical scheme, reasonable installation drainage pipe effectively promotes sponge urban drainage and the ability of water purification, detects each item parameter of basement slot earlier during the installation, guarantees the precision and the firm degree of installation drainage pipe, avoids demolishing the reworking, installs the drainage ditch body and lays multiple filter material at drainage ditch body top, increases the water purification function when draining, and the filter material is natural material, can be fine to be fused into urban landscape.
Preferably, the flattening treatment in the second step comprises removing floating soil and filling sand for flattening, and detecting the horizontal straightness of the substrate before the flattening treatment.
Through adopting above-mentioned technical scheme, get rid of originally soft floating clay, lay comparatively closely knit sand, reduce the drainage pipe after the installation and sink, detect the straightness accuracy of basement and prevent that the deviation from appearing influencing installation quality when the installation.
Preferably, before the drainage ditch body is installed, the drainage ditch body is transported to the side of the base groove, and waterproof glue is smeared at the joint.
By adopting the technical scheme, the waterproof glue is spread at the joint to be beneficial to reducing the occurrence of water leakage and seepage due to the sectional assembly.
Preferably, the fine filter crushed stone and the coarse filter crushed stone are cleaned and screened before being paved, and filtering covering soil is paved between the fine filter crushed stone and the coarse filter crushed stone during paving.
Through adopting above-mentioned technical scheme, fine filtration rubble and coarse filtration rubble after washing and screening can keep good filter effect for a longer time, further improves the quality of water of purification, and the filtration earthing can absorb a part of filtration impurity to provide good environment for microorganism decomposition impurity.
Preferably, in the fifth step, the weeds, roots and stones are removed firstly during the earth backfilling, and backfilled earth is filled into the gap between the drainage ditch body and the base groove and the redundant backfilled earth is removed during the edge repairing.
By adopting the technical scheme, the repairing edge prevents the edge from forming a gap due to sinking and soil body separation, damages the drainage ditch body, and simultaneously enables the drainage pipeline to be better integrated with the environment.
In summary, the invention has the following beneficial technical effects:
1. the filtering stone is paved at the top of the drainage ditch body to filter the water body flowing into the drainage pipeline, so that impurities in the water are reduced, the fine filtering stone and the coarse filtering stone are used for carrying out double filtration on the water body, meanwhile, the gap between the coarse filtering stone is large, the water can be quickly absorbed, and the drainage capacity is not influenced to the greatest extent when the filtering function is provided.
2. The drainage pipeline is reasonably installed, the capability of draining water and purifying water in a sponge city is effectively promoted, various parameters of a base groove are detected during installation, the accuracy and firmness of installing the drainage pipeline are guaranteed, reworking is avoided, the drainage ditch body is installed, various filter materials are paved at the top of the drainage ditch body, the water purifying function during draining is improved, the filter materials are natural materials, and urban landscapes can be well integrated.
3. The invention combines the drainage ditch with the sponge idea, is suitable for sponge city construction, improves water quality at a water quality source, prevents pollution transfer, realizes source management and control of pollution, increases overflow function, can pass through a filter layer when rapid drainage is needed, increases drainage efficiency, is buried in the ground integrally, has only a small part exposed, and reduces environmental pollution and landscape damage.
4. The prefabricated drainage ditch body is made of steel, so that the rapid installation of the drainage ditch is realized, the whole construction process is simplified, the time cost and the energy cost are reduced, the whole service life of the drainage ditch is prolonged, and the use safety is ensured.
Drawings
FIG. 1 is a schematic view of a drain body according to the present invention;
FIG. 2 is a schematic view of the other view of FIG. 1;
FIG. 3 is a schematic view of a construction installation cross section of the present invention;
fig. 4 is a partially enlarged schematic view of fig. 3 at a.
Reference numerals illustrate:
1. the drainage ditch comprises a drainage ditch body, 11, overflow plates, 111, a bottom water passing sieve, 112, a top water passing sieve, 113, drainage plates, 114, supporting blocks, 12, supporting filter plates, 2, water permeable geotechnical cloth, 3, fine filtering gravels, 4, filtering earthing, 5, coarse filtering gravels, 6, LID facilities, 7 and a foundation layer.
Detailed Description
The invention is described in further detail below with reference to fig. 1-4.
Example 1:
the embodiment of the invention discloses a concealed water purification drainage ditch, which comprises a drainage ditch body 1, wherein water filtering stones are paved at the top of the drainage ditch body 1, the drainage ditch body 1 is arranged in a foundation soil layer 7, the top of the drainage ditch body 1 is leveled with the tops of LID facilities 6 at two sides, a supporting filter plate 12 is arranged in the middle layer of the drainage ditch body 1, the supporting filter plate 12 divides the drainage ditch body 1 into a top filter layer and a bottom water containing layer, and the water filtering stones comprise fine filtering stones 3 and coarse filtering stones 5.
A construction method of a concealed water purification drainage ditch comprises the following construction steps:
step one: calculating the cross-sectional area of the required drainage ditch according to the rainfall intensity and the rainfall capacity of the construction site, enabling the larger the rainfall intensity and the rainfall capacity, the larger the cross-sectional area of the required drainage ditch, prefabricating the drainage ditch body 1 according to the designed cross-sectional shape of the drainage ditch in sections, measuring and paying off on site, and marking construction sites and construction intervals;
step two: performing earth excavation according to the marked construction sites and construction intervals, performing leveling treatment on the formed substrate after the earth excavation is completed, and detecting the depth and gradient of the substrate;
step three: installing the prefabricated drainage ditch body 1 in the base, detecting the angle and the height between the drainage ditch body 1 and the ground after the installation is completed, and adjusting the drainage ditch body 1 to be parallel to the ground of the LID facility 6 and the top to be level with the ground of the LID facility 6;
step four: sequentially installing and paving a support filter plate 12, permeable geotextile 2, fine filter gravels 3 and coarse filter gravels 5 in the installed and adjusted drainage ditch body 1, wherein the top of the coarse filter gravels 5 is level with the ground of the LID facility 6, and detecting the water passing efficiency of the installed drainage ditch;
step five: and (3) performing earth backfilling at the edge of the top of the drainage ditch body 1, repairing the earth structure of the edge and tamping to be smooth.
Example 2:
the addition of the following components is based on the embodiment 1:
referring to fig. 1-4, overflow plates 11 are arranged on two sides of the top of the drainage ditch body 1, a water passing groove is formed between the overflow plates 11 and the drainage ditch body 1, the top of the water passing groove is communicated with the filter layer through a top water passing sieve 112, and the bottom of the water passing groove is communicated with the water containing layer through a bottom water passing sieve 111.
The drain body 1 and the overflow plate 11 are made of metal or reinforced cement.
Referring to fig. 3 and 4, the filter layer further comprises a filter cover soil 4, the filter cover soil 4 being disposed between the fine filter crushed stone 3 and the coarse filter crushed stone 5, the coarse filter crushed stone 5 being at the very top.
The rough filtered crushed stone 5 is positioned near the top water screen 112 with the top exceeding the water screen 112 and flush with the top of the floor of the LID facility 6, and the bottom extending 10-20cm below the water screen 112.
Referring to fig. 1-4, a water permeable geotechnical cloth 2 is laid between the support filter plate 12 and the filter layer, two sides of the water permeable geotechnical cloth 2 extend to be closely attached to the inner side of the drainage ditch body 1, and the support filter plate 12 is placed on a supporting block 114 on the inner side surface of the drainage ditch body 1.
The geotextile 2 is good in water permeability and not easy to break and crack.
Referring to fig. 1-4, the top of the drainage ditch body 1 is provided with a drainage plate 113, the outer side edge of the drainage plate 113 is fixed at the top of the LID facility 6, and the inner side edge of the drainage plate 113 is bent downwards towards the inside of the drainage ditch body 1.
Example 3:
the addition of the components is based on the embodiment 1 or 2:
the soil excavation adopts a bucket with the same cross section shape as the drainage ditch body 1, and adopts a disposable tillage and excavation mode.
And step two, flattening treatment comprises removing floating soil and filling sand for flattening, and detecting the horizontal straightness of the substrate before flattening treatment.
And (3) tamping by using a rammer with the same shape as the substrate or rolling and tamping by using a roller with the same shape as the substrate when filling sand and leveling.
Before the drainage ditch body 1 is installed, the drainage ditch body 1 is transported to the side of the base groove, and waterproof glue is smeared at the joint.
After the installation is completed, the sealant is smeared at the gap and the adhesive surface is leveled.
The fine filter crushed stone 3 and the coarse filter crushed stone 5 are cleaned and screened before being paved, and filtering covering soil is paved between the fine filter crushed stone 3 and the coarse filter crushed stone 5 during paving.
And fifthly, removing weeds, tree roots and stones during backfilling of earthwork, and plugging backfilled soil into gaps between the drainage ditch body 1 and the basal groove and cleaning redundant backfilled soil during edge repairing.
Example 4:
the number of the steps is increased on the basis of the examples 1, 2 or 3:
the fine filter crushed stone 3 and the filter earthing 4 are paved in a stacking arrangement mode by firstly carrying out independent bagging.
The drainage plate 113 outside edge department at the drainage ditch body 1 top sets up the mud filtering groove, and the mud filtering groove is open positive ditch, can carry out preliminary precipitation when the rivers, reduces silt inflow drainage pipe, increases drainage pipe's filtration burden.
The above embodiments are not intended to limit the scope of the present invention, so: all equivalent changes in structure, shape and principle of the invention should be covered in the scope of protection of the invention.
Claims (6)
1. The utility model provides a concealed water purification escape canal, includes escape canal body (1), its characterized in that: the drainage ditch body (1) is laid with water filtering stones at the top, the drainage ditch body (1) is arranged in a foundation soil layer (7), and the top of the drainage ditch body (1) is leveled with the tops of LID facilities (6) at two sides;
the middle layer of the drainage ditch body (1) is provided with a support filter plate (12), and the support filter plate (12) divides the drainage ditch body (1) into a top filter layer and a bottom water containing layer;
the water filtering stone comprises fine filtering stone (3) and coarse filtering stone (5);
overflow plates (11) are arranged on two sides of the top of the drainage ditch body (1), a water passing groove is formed between the overflow plates (11) and the drainage ditch body (1), the top of the water passing groove is communicated with the filter layer through a top water passing sieve (112), and the bottom of the water passing groove is communicated with the water containing layer through a bottom water passing sieve (111);
the drainage ditch comprises a drainage ditch body (1), wherein a drainage plate (113) is arranged at the top of the drainage ditch body (1), the outer side edge of the drainage plate (113) is fixed at the top of a LID facility (6), and the inner side edge of the drainage plate (113) is downwards bent towards the inside of the drainage ditch body (1);
the filter layer further comprises a filter covering soil (4), wherein the filter covering soil (4) is arranged between the fine filter crushed stone (3) and the coarse filter crushed stone (5), and the coarse filter crushed stone (5) is arranged at the topmost part.
2. The concealed water purification drainage ditch according to claim 1, wherein: the water permeable geotechnical cloth (2) is paved between the support filter plate (12) and the filter layer, two sides of the water permeable geotechnical cloth (2) extend to be clung to the inner side of the drainage ditch body (1), and the support filter plate (12) is placed on a supporting block (114) on the inner side surface of the drainage ditch body (1).
3. A construction method of a concealed type water purification drainage ditch as claimed in any one of claims 1 to 2, characterized in that: the construction method comprises the following construction steps:
step one: calculating the cross-sectional area of the drainage ditch according to the rainfall intensity and the precipitation amount of the construction site, prefabricating the drainage ditch body (1) in sections according to the designed cross-sectional shape of the drainage ditch, measuring and paying off on site, and marking the construction site and the construction section;
step two: performing earth excavation according to the marked construction sites and construction intervals, performing leveling treatment on the formed substrate after the earth excavation is completed, and detecting the depth and gradient of the substrate;
step three: installing the prefabricated drainage ditch body (1) in the base, detecting the angle and the height between the drainage ditch body (1) and the ground after the installation is completed, and adjusting the drainage ditch body (1) to be parallel to the ground of the LID facility (6) and the top to be level with the ground of the LID facility (6);
step four: the method comprises the steps that a supporting filter plate (12), a permeable geotechnical cloth (2), fine filter gravels (3) and coarse filter gravels (5) are sequentially installed and paved in a mounted and adjusted drainage ditch body (1), the tops of the coarse filter gravels (5) are flush with the ground of an LID facility (6), the water passing efficiency of the mounted drainage ditch is detected, the fine filter gravels (3) and the coarse filter gravels (5) are cleaned and screened before paving, and filter covering soil is paved between the fine filter gravels (3) and the coarse filter gravels (5) during paving;
step five: and (3) performing earth backfill at the top edge of the drainage ditch body (1), repairing the earth structure of the edge and tamping to be smooth.
4. A concealed water purification drainage ditch construction method according to claim 3, wherein: and step two, flattening treatment comprises removing floating soil and filling sand for flattening, and detecting the horizontal straightness of the substrate before flattening treatment.
5. A concealed water purification drainage ditch construction method according to claim 3, wherein: before the drainage ditch body (1) is installed, the drainage ditch body (1) is transported to the side of the base groove, and waterproof glue is smeared at the joint.
6. A concealed water purification drainage ditch construction method according to claim 3, wherein: and fifthly, removing weeds, tree roots and stones during backfilling of earthwork, and plugging backfilled soil into gaps between the drainage ditch body (1) and the base groove and cleaning redundant backfilled soil during edge repairing.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210184905.3A CN114319556B (en) | 2022-02-28 | 2022-02-28 | Concealed type water purification drainage ditch and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210184905.3A CN114319556B (en) | 2022-02-28 | 2022-02-28 | Concealed type water purification drainage ditch and construction method thereof |
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| CN114319556A CN114319556A (en) | 2022-04-12 |
| CN114319556B true CN114319556B (en) | 2024-01-12 |
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|---|---|---|---|---|
| KR20040046578A (en) * | 2002-11-28 | 2004-06-05 | 성영건설 주식회사 | The construction method of drain and bottom of building using mixed rubbernized asphalt with polyurethan resin and stainless drain |
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| Publication number | Publication date |
|---|---|
| CN114319556A (en) | 2022-04-12 |
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