CN110845109B - Sludge treatment system adopting horizontal drainage plate and geotextile vacuum preloading method and construction method thereof - Google Patents
Sludge treatment system adopting horizontal drainage plate and geotextile vacuum preloading method and construction method thereof Download PDFInfo
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- CN110845109B CN110845109B CN201910995191.2A CN201910995191A CN110845109B CN 110845109 B CN110845109 B CN 110845109B CN 201910995191 A CN201910995191 A CN 201910995191A CN 110845109 B CN110845109 B CN 110845109B
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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
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/005—Soil-conditioning by mixing with fibrous materials, filaments, open mesh or the like
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0053—Production methods using suction or vacuum techniques
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0075—Textiles
- E02D2300/0078—Textiles woven
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Paleontology (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Agronomy & Crop Science (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Sewage (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a sludge treatment system by combining horizontal drainage plates with geotextile vacuum preloading, which comprises a mud pit, transverse drainage plates, geotextiles, a pumping pipeline and a vacuum pumping device, wherein the mud pit is filled with sludge, the transverse drainage plates are transversely distributed in the sludge in the mud pit layer by layer, each layer of the transverse drainage plates is tightly attached and correspondingly provided with the geotextile, the geotextile is formed by needling or weaving synthetic fibers, vertical main pipes are vertically arranged in the mud pit close to two opposite side walls of the mud pit, and the vertical main pipes are connected with the transverse drainage plates through transverse branch pipes. The invention also provides a construction method of the system. The system for treating the sludge by combining the horizontal drainage plate with the geotextile vacuum preloading method and the construction method have the advantages of higher drainage efficiency and wider coverage range.
Description
Technical Field
The invention relates to a sludge treatment system by combining a horizontal drainage plate with a geotextile vacuum preloading method. The invention also relates to a construction method of the sludge treatment system by combining the horizontal drainage plate with the geotextile vacuum preloading method.
Background
In traditional vacuum preloading, tiny soil particles are easily blocked in the pores of the filter membrane of the drainage plate, so that the clogging of the drainage plate is caused, and the drainage efficiency is reduced. And the vacuum degree is attenuated along the depth of the vertical drainage plate, so that the traditional vacuum preloading has poor effect on treating the soil body on the bottom layer.
The geotextile is a water-permeable geosynthetic material which is formed by needling or weaving synthetic fibers. In the traditional vacuum preloading, the geotextile is usually laid on the surface layer of the sludge to prevent puncture and protect the geomembrane. Although geotextiles are widely used for insulation and reinforcement in conventional vacuum preloading. However, geotextiles are often not used directly for drainage purposes.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a system for treating sludge by combining a horizontal drainage plate with a geotextile vacuum preloading method, which greatly increases the drainage area, has higher drainage efficiency and greatly relieves the clogging of the drainage plate. The invention also aims to provide a construction method of the sludge treatment system by combining the horizontal drainage plate with the geotextile vacuum preloading method.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a horizontal drain bar unites geotextile vacuum preloading and handles silt system, includes mud pit, horizontal drain bar, geotextile, pump drainage pipeline and evacuating device, it has silt to fill in the mud pit, horizontal drain bar successive layer transverse distribution is in the silt in mud pit, every layer horizontal drain bar hugs closely to correspond and is provided with geotextile, and geotextile is formed through acupuncture or weaving by synthetic fiber, horizontal drain bar pass through pipe-line system with evacuating device connects.
Further, the pipeline system comprises a vertical header pipe which is vertically arranged near two opposite side walls of the mud pit and is connected with the horizontal drainage plates through a horizontal branch pipe, the vertical header pipe comprises a left vertical header pipe and a right vertical header pipe, the left vertical header pipe and the right vertical header pipe are connected with the horizontal drainage plates through the horizontal branch pipe, each horizontal drainage plate is sequentially and alternately connected with the left vertical header pipe and the right vertical header pipe along the height direction layer, and the left vertical header pipe and the right vertical header pipe are respectively connected with the vacuumizing device.
Further, the transverse drainage plate is arranged on the lower side of the geotextile.
Furthermore, a plurality of cloth bags are arranged on the geotextile at intervals, each cloth bag is provided with an insertion hole, and the transverse drainage plate is inserted into the cloth bag.
Further, the geotextile is geotextile.
Further, horizontal branch pipe includes left branch pipe and right branch pipe, and left branch pipe and right branch pipe cup joint each other, set up the sealing washer between left branch pipe and the right branch pipe, left branch pipe right branch pipe removes each other relatively, the elastic seal membrane of left branch pipe and right branch pipe overcoat, elastic seal membrane can contract or elastic stretch along with the relative movement of left branch pipe and right branch pipe.
The invention also provides a construction method of the sludge treatment system by combining the horizontal drainage plates and the geotextile vacuum preloading method, which comprises the following steps:
a. excavating a mud pit;
b. a left vertical main pipe and a right vertical main pipe are respectively and vertically arranged on the left side wall and the right side wall of the mud pit, drainage connecting ends are sequentially distributed on the left vertical main pipe and the right vertical main pipe along the height direction, the left vertical main pipe and the right vertical main pipe are transversely fixed on the side wall of the mud pit by adopting a plurality of U-shaped forks, and the U-shaped forks are transversely forked into soil bodies on the side wall;
c. pouring the sludge into a slurry tank, laying the transverse drainage plate and the geotextile on the upper surface of the sludge layer after each layer is poured, wherein the geotextile is tightly attached to the transverse drainage plate, and the transverse slope drainage plate is connected with the corresponding drainage connecting end by adopting a transverse branch pipe;
d. the left vertical main pipe and the right vertical main pipe are respectively connected with the vacuumizing device, and a sealing membrane and geotextile are covered above the sludge layer;
e. and starting a vacuumizing device to discharge water in the sludge.
The invention has the technical effects that:
1. according to the invention, the geotextile covers the upper part of each layer of the drainage plate, and the vacuum degree on the horizontal drainage plate can be transferred to the whole geotextile surface, so that the whole geotextile surface can drain water, and the drainage area is greatly increased; .
2. Each horizontal drain bar leads to with left vertical house steward and right vertical house steward in turn along the direction of height successive layer and is connected, connects horizontal drain bar respectively through left vertical house steward and right vertical house steward and can keep sufficient suction dynamics, moreover can evenly distributed, keeps the more balanced pump drainage dynamics in each side direction.
3. The geotextile is provided with a plurality of cloth bags at intervals, the cloth bags are provided with insertion holes, the transverse drainage plates are inserted into the cloth bags, the transverse drainage plates and the cloth bags are kept attached tightly by the structure, the soil layer sinks in time after drainage, and the transverse drainage plates and the cloth bags can be ensured to be attached tightly, so that the pumping efficiency of the geotextile is ensured, meanwhile, the geotextile can filter the water entering the transverse drainage plates in a full wrapping manner, and the blocking probability of the transverse drainage plates is reduced.
4. The left branch pipe and the right branch pipe are mutually sleeved and are provided with sealing rings to keep the sealed structure, so that the transverse branch pipe can have the telescopic capacity, the outer elastic sealing film further ensures that the matching part of the left branch pipe and the right branch pipe cannot be in contact with sludge, the mutual movement of the left branch pipe and the right branch pipe cannot be influenced, and the sealing can be further kept. The horizontal branch pipe keeps the contraction state under the initial state, and when sludge in the slurry tank is pumped and drained and the soil layer sinks, the horizontal branch pipe can be stretched, so that the whole pumping and draining pipeline system is prevented from being pulled and damaged.
5. The system construction method is simple and effective in steps and large in pumping and draining amount.
Drawings
Fig. 1 is a schematic structural diagram of a system for treating sludge by combining a horizontal drainage plate with a geotextile vacuum preloading method.
Fig. 2 is a schematic cross-sectional view of the structure of the geotextile of fig. 1.
Fig. 3 is a schematic sectional view of the structure of the lateral branch pipe in fig. 1.
Fig. 4 is a detailed structural diagram of a system for treating sludge by combining a horizontal drainage plate with a geotextile vacuum preloading method.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
Referring to fig. 1-4, the invention provides a horizontal drainage plate and geotextile vacuum preloading sludge treatment system, wherein the sludge comprises hydraulic fill sludge, dredging sludge, mud and the like, the system comprises a mud pit 1, a transverse drainage plate 2, a geotextile 3, a drainage pipeline and a vacuum pumping device 4, the mud pool 1 is filled with mud, the transverse drainage plates 2 are transversely distributed in the mud pool 1 layer by layer, each layer of the transverse drainage plates 2 is closely and correspondingly provided with geotextile 3, the lower side geotextile 3 of the transverse drainage plate 2 in the geotextile 3 is formed by synthetic fibers through needling or weaving, has a reverse filtering effect, the geotextile 3 can be geotextile, and also can be other geotextile materials with vertical and transverse drainage functions, and the transverse drainage plate 2 is connected with the vacuumizing device 4 through a pipeline system.
Referring to fig. 1, the pipeline system comprises vertical main pipes vertically arranged near two opposite side walls of the mud pit, the vertical main pipes 5 are connected with the horizontal drainage plates 2 through horizontal branch pipes, each vertical main pipe 5 comprises a left vertical main pipe and a right vertical main pipe, the left vertical main pipe and the right vertical main pipe are connected with the horizontal drainage plates 2 through the horizontal branch pipes, each horizontal drainage plate 2 is sequentially and alternately connected with the left vertical main pipe and the right vertical main pipe along the height direction layer by layer, and the left vertical main pipe and the right vertical main pipe are respectively connected with the vacuumizing device 4. Connect horizontal drain bar 2 respectively through left vertical house steward and right vertical house steward and can keep sufficient suction dynamics, moreover can evenly distributed more, keep each side to the more balanced suction and drainage dynamics.
Referring to fig. 1 and 2, a plurality of cloth bags 6 are arranged on the geotextile at intervals, the cloth bags 6 have insertion ports, and the transverse drain plates 2 are inserted into the cloth bags. This structure makes horizontal drain bar 2 and sack keep pasting closely adhering to, and the soil layer sinks in time after the drainage also can ensure that both paste closely to ensure its pump drainage efficiency, can carry out the filtration of full parcel to the moisture that gets into horizontal drain bar 2 simultaneously, reduce the probability that horizontal drain bar 2 is silted up stifled.
Referring to fig. 1 and 3, the lateral branch pipe comprises a left branch pipe 7 and a right branch pipe 8, the left branch pipe 7 and the right branch pipe 8 are sleeved with each other, a sealing ring 9 is arranged between the left branch pipe 7 and the right branch pipe 8, the left branch pipe 7 can move relative to the right branch pipe 8, an elastic sealing film 9 is sleeved outside the left branch pipe 7 and the right branch pipe 8, the elastic sealing film 9 can be a rubber film, and the elastic sealing film 9 can shrink or stretch elastically along with the relative movement of the left branch pipe 7 and the right branch pipe 8. The left branch pipe 7 and the right branch pipe 8 are mutually sleeved and provided with the sealing ring 10 to keep the sealing structure, so that the transverse branch pipe can have the telescopic capacity, and the outer elastic sealing film 9 further ensures that the matching part of the left branch pipe 7 and the right branch pipe 8 cannot be in contact with sludge, cannot influence the mutual movement of the left branch pipe 7 and the right branch pipe 8, and can further keep the sealing. The horizontal branch pipe keeps the contraction state under the initial state, and when the soil layer sinks after the sludge in the slurry pond 1 is pumped, the horizontal branch pipe can be stretched, so that the whole pumping and drainage pipeline system can not be pulled and damaged.
Referring to fig. 1-3, the invention also provides a construction method of the sludge treatment system by combining the horizontal drainage plates with the geotextile vacuum preloading method, which comprises the following steps:
a. excavating a mud pit 1;
b. a left vertical main pipe and a right vertical main pipe are respectively and vertically arranged on the left side wall and the right side wall of the mud pit 1, drainage connecting ends are sequentially distributed on the left vertical main pipe and the right vertical main pipe along the height direction, the left vertical main pipe and the right vertical main pipe are transversely fixed on the side wall of the mud pit 1 in a forking mode through a plurality of U-shaped forks, and the U-shaped forks are transversely forked into soil bodies of the side wall;
c. pouring the sludge into a slurry tank 1, laying the transverse drainage plate 2 and the geotextile 3 on the upper surface of the sludge layer after each layer is poured, wherein the geotextile 3 is tightly attached to the transverse drainage plate 2, and the transverse slope drainage plate 2 is connected with the corresponding drainage connecting end by adopting a transverse branch pipe;
d. the left vertical main pipe and the right vertical main pipe are respectively connected with the vacuumizing device 4, and a sealing membrane and geotextile are covered above the sludge layer;
e. and starting the vacuumizing device 4 to discharge the water in the sludge.
Claims (4)
1. The utility model provides a silt system is handled to horizontal drain bar combination geotextile vacuum preloading method, includes mud pit, horizontal drain bar, geotextile, pump drainage pipeline and evacuating device, it has silt to fill in the mud pit, horizontal drain bar successive layer transverse distribution is in the silt in mud pit, characterized by: each layer of the transverse drainage plate is provided with geotextile closely and correspondingly, the geotextile is formed by synthetic fibers through needling or weaving, and the transverse drainage plate is connected with the vacuumizing device through a pipeline system; the pipeline system comprises vertical main pipes which are vertically arranged close to two opposite side walls of the mud pit in the mud pit, the vertical main pipes are connected with the transverse drainage plates through transverse branch pipes, each vertical main pipe comprises a left vertical main pipe and a right vertical main pipe, the left vertical main pipe and the right vertical main pipe are connected with the transverse drainage plates through the transverse branch pipes, each transverse drainage plate is sequentially and alternately connected with the left vertical main pipe and the right vertical main pipe layer by layer along the height direction, and the left vertical main pipe and the right vertical main pipe are respectively connected with the vacuumizing device; the transverse branch pipes comprise a left branch pipe and a right branch pipe, the left branch pipe and the right branch pipe are mutually sleeved, a sealing ring is arranged between the left branch pipe and the right branch pipe, the left branch pipe can move relative to the right branch pipe, elastic sealing films are sleeved outside the left branch pipe and the right branch pipe, and the elastic sealing films can contract or elastically stretch along with the relative movement of the left branch pipe and the right branch pipe; a plurality of cloth bags are arranged on the geotextile at intervals, each cloth bag is provided with an insertion hole, and the transverse drainage plate is inserted into the cloth bag.
2. The system for treating sludge by combining the horizontal drainage plate with the geotextile vacuum preloading method as claimed in claim 1, which is characterized in that: the transverse drainage plate is positioned at the lower side of the geotextile.
3. The system for treating sludge by combining the horizontal drainage plate with the geotextile vacuum preloading method as claimed in claim 1 or 2, which is characterized in that: the geotextile is geotextile.
4. A construction method of a sludge treatment system by combining the horizontal drainage plates and the geotextile through vacuum preloading is characterized in that: the method comprises the following steps:
a. excavating a mud pit;
b. a left vertical main pipe and a right vertical main pipe are respectively and vertically arranged on the left side wall and the right side wall of the mud pit, drainage connecting ends are sequentially distributed on the left vertical main pipe and the right vertical main pipe along the height direction, the left vertical main pipe and the right vertical main pipe are transversely fixed on the side wall of the mud pit by adopting a plurality of U-shaped forks, and the U-shaped forks transversely fork into soil bodies on the side wall;
c. pouring the sludge into a sludge tank, laying a transverse drainage plate and geotextile on the upper surface of the sludge layer after each layer is poured, wherein the geotextile is tightly attached to the transverse drainage plate, and the transverse drainage plate is connected with the corresponding drainage connecting end by adopting a transverse branch pipe;
d. respectively connecting the left vertical main pipe and the right vertical main pipe with a vacuum pumping device, and covering a sealing membrane and geotextile above the sludge layer;
e. and starting a vacuumizing device to discharge water in the sludge.
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| CN201910995191.2A CN110845109B (en) | 2019-10-18 | 2019-10-18 | Sludge treatment system adopting horizontal drainage plate and geotextile vacuum preloading method and construction method thereof |
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| CN201910995191.2A CN110845109B (en) | 2019-10-18 | 2019-10-18 | Sludge treatment system adopting horizontal drainage plate and geotextile vacuum preloading method and construction method thereof |
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| CN111455974B (en) * | 2020-03-04 | 2022-05-20 | 温州大学 | Vacuum preloading flocculation drainage method for transverse drainage plate combined geotextile |
| CN111501728A (en) * | 2020-03-31 | 2020-08-07 | 温州大学 | Vacuum preloading device and vacuum preloading method based on container treatment slurry |
| CN111501727A (en) * | 2020-03-31 | 2020-08-07 | 温州大学 | Device for vacuum preloading treatment of waste slurry of drainage plate and construction process thereof |
| CN111792812A (en) * | 2020-06-23 | 2020-10-20 | 温州大学 | Movable vacuum preloading processing device |
| CN112761135B (en) * | 2021-01-25 | 2023-05-05 | 温州大学 | Device for treating dredging sludge with high water content by using short fiber-geomembrane bag reverse filtration composite horizontal drainage plate and construction method of device |
| CN114703828B (en) * | 2022-05-05 | 2024-02-06 | 浙江工业大学 | Vacuum preloading horizontal drain board laying system and field construction method |
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| CN2267270Y (en) * | 1996-08-23 | 1997-11-12 | 任之忠 | Cushion like water sluice way equipment used on dam with back filtration function |
| CN102561307A (en) * | 2012-01-04 | 2012-07-11 | 河海大学 | Clogging preventing method for drainage channel based on underground high-flow-capacity drainage system |
| CN103243704A (en) * | 2013-05-02 | 2013-08-14 | 浙江大学舟山海洋研究中心 | Shallow mud foundation treatment method |
| CN203411970U (en) * | 2013-08-15 | 2014-01-29 | 上海建工七建集团有限公司 | Flexible vacuum preloading type water discharging pipe |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6426418B2 (en) * | 2014-09-26 | 2018-11-21 | 株式会社Ｐ・Ｖ・Ｃ | Ground improvement method and ground improvement system |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2267270Y (en) * | 1996-08-23 | 1997-11-12 | 任之忠 | Cushion like water sluice way equipment used on dam with back filtration function |
| CN102561307A (en) * | 2012-01-04 | 2012-07-11 | 河海大学 | Clogging preventing method for drainage channel based on underground high-flow-capacity drainage system |
| CN103243704A (en) * | 2013-05-02 | 2013-08-14 | 浙江大学舟山海洋研究中心 | Shallow mud foundation treatment method |
| CN203411970U (en) * | 2013-08-15 | 2014-01-29 | 上海建工七建集团有限公司 | Flexible vacuum preloading type water discharging pipe |
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Inventor after: Wang Jun Inventor after: Fu Hongtao Inventor after: Yuan Guohui Inventor after: Press the dayla Inventor after: Cai Yuanqiang Inventor after: Wang Peng Inventor after: Ni Junfeng Inventor after: Gao Ziyang Inventor before: Wang Jun Inventor before: Fu Hongtao Inventor before: Yuan Guohui Inventor before: By Da la la Inventor before: Cai Yuanqiang Inventor before: Wang Peng Inventor before: Ni Junfeng Inventor before: Gao Ziyang |
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Effective date of registration: 20220316 Address after: 325000 Dongfang Road 38, Ouhai Economic Development Zone, Wenzhou, Zhejiang (Wenzhou University Science Park) Applicant after: Wenzhou University Address before: 325000 15-705, Higher Education Expo Park, Chashan street, Ouhai District, Wenzhou City, Zhejiang Province Applicant before: Wang Jun |
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Application publication date: 20200228 Assignee: ZHEJIANG ZHONGWEI CONSTRUCTION ENGINEERING DESIGN Co.,Ltd. Assignor: Wenzhou University Contract record no.: X2022330000815 Denomination of invention: Sludge Treatment System with Horizontal Drainage Board Combined with Geotextile Vacuum Preloading and Its Construction Method Granted publication date: 20220503 License type: Common License Record date: 20221222 |