CN100584426C - Ventilating vacuum fast mud-water separating method for dredging high-water content mud accumulation yard - Google Patents
Ventilating vacuum fast mud-water separating method for dredging high-water content mud accumulation yard Download PDFInfo
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- CN100584426C CN100584426C CN200710132092A CN200710132092A CN100584426C CN 100584426 C CN100584426 C CN 100584426C CN 200710132092 A CN200710132092 A CN 200710132092A CN 200710132092 A CN200710132092 A CN 200710132092A CN 100584426 C CN100584426 C CN 100584426C
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 41
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- 238000000926 separation method Methods 0.000 claims abstract description 17
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- 230000001105 regulatory effect Effects 0.000 abstract description 2
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- 210000004911 serous fluid Anatomy 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
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- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses an air permeable vacuum fast mud-water separation method of the dredged sludge storage yard with high water content, which relates to a water content fast reducing method of the dredged sludge with high water content and high clay content produced in the ports, the sea-routes and the hydraulic engineering. Through a vacuum extractor and a venting device, vacuum negative pressure in a space drainage system in a cofferdam storage yard is regulated, which can effectively solve the sludge plugging problem of the filtering and drainage system, cause the water content of the dredged sludge to be fast reduced, increase the sludge dredging amount of the cofferdam storage yard with the same capacity and reduce the land occupying area; meanwhile, the fast reducing of water content of the sludge can lighten the difficulty of subsequent processing of the sludge in the storage yard and shorten the construction period. With simple technique, low cost and obvious mud-water separation effect, the method is applied to the construction practice.
Description
Technical field
The present invention is a kind of method of the high-moisture dredging silt stockyard that produces in water conservancy, port and pier, the waterway engineering construction being carried out quick mud-water separation, be applicable to low concentration dredging silt large tracts of land joint disposal engineering, belong to the technical field of harbour, navigation channel and hydraulic engineering.
Background technology
Development along with harbour, navigation channel and water conservancy construction cause, the dredging in various navigation channels, river course and widen in the process and the harbour is newly-built, in the extension project, produce a large amount of dredging silts inevitably, according to incompletely statistics, the annual discarded dredging silt of China reaches more than 1.0 billion cubic meters, and the quantities that dredging silt is handled is very considerable.With south water to north east line Jiangsu Section first phase engineering is example, and earthwork evacuation reaches 20334.85 ten thousand steres, and major part is the high-moisture dredging silt in the middle of the spoir.It is a kind of effective ways of in harbour, navigation channel and the hydraulic engineering mud being handled that dredging silt is blown into that the stockyard handles.Because dredging silt is inhaled, is harrowed and inhale disturbance through strand in the dredging process, often contain a lot of moisture, and fine grained is more, the sedimentation time is longer in the mud, such characteristic has determined traditional stockyard design of mud not being handled will take a large amount of soils for a long time, the required permanent occupation of land of spoir as south water to north east line Jiangsu Section first phase engineering reaches 22009.2 mu, mud is deposited stockyard expropriation of land, rent and has been accounted for about 60% of total engineering cost, becomes the principal element of Control Engineering cost.
Present existing mud-water separation technology is by adding the short heavy agent of certain chemistry in sewage or mud, perhaps uses plant equipment such as centrifuge to realize mud-water separation.Utilize existing these technology, the mud amount of processing is smaller usually, and the cost height, and the field middle and small scales such as mud off that generally only are adapted in mud-water separation construction in the municipal works, plant effuent processing, the modern foundation engineering use.And existing these mud-water separation technology are used in the processing of a large amount of dredging silts that produce for harbor approach and hydraulic engineering, and sludge treatment efficient is low, and the expense height can not satisfy the actual requirement of engineering.
Summary of the invention
Technical problem: the objective of the invention is, the defective big at the dredging silt generation, that water content is high, precipitation is slow, traditional stockyard processing method land occupation is many, holding time is long, the ventilative quick mud-water separation method of vacuum in high-moisture dredging silt stockyard is proposed, and in drainage system, apply ventilative negative pressure of vacuum, discharge the moisture in the mud fast, to reach the purpose that muddy water separates fast.
Technical scheme: the solution of the present invention is, set up the horizontal cross drainage drainage pipeline networks that is connected on the ground in the cofferdam earlier, horizontal longitudinal drainage pipeline, on the cofferdam, set up vacuum extractor and gas permeable devices, horizontal longitudinal drainage pipeline is communicated with vacuum extractor by aqueduct, be communicated with gas permeable devices by wireway, on horizontal cross drainage drainage pipeline networks, be connected with vertical plastic draining board side by side, the middle part of vertical plastic draining board laterally connects horizontal plastic draining board, the top of vertical plastic draining board connects drag-line, the two ends of drag-line are fixed on the timber, form ventilative vacuum space drainage system; Utilize vacuum extractor to regulate the vacuum of space drainage system in the mud hydraulic reclamation process, regulate negative pressure of vacuum in the space drainage system in the stockyard, cofferdam, get rid of the moisture in the mud, promote mud-water separation by vacuum extractor and gas permeable devices.The optimum vacustat of space drainage system is between 75～85kPa.
In the blowing-filling sludge process, elder generation's complete opening gas permeable devices, in the process that vacuumizes, regulate vacuum by gas permeable devices, make the vacuum that reaches an optimum in the drainage system of space, avoid the silting of drainage drainage system, guarantee that drainage system can unimpededly transmit negative pressure of vacuum, drainage and draining, reach the purpose of quick reduction dredging silt water content.This method can be extracted the considerable part water yield in the high-moisture mud of stockyard out at short notice, reduce the mud water content, improve mud concentration, reduce sludge volume, thereby can reduce stockyard land seizure area, because the mud water content after the mud-water separation is lower, can reduce the difficulty of construction of the follow-up joint disposal in mud stockyard significantly simultaneously.
Beneficial effect: the advantage of the ventilative quick mud-water separation method of vacuum in high-moisture dredging silt of the present invention stockyard mainly contain following some:
(1) can make stockyard high-moisture dredging silt mud-water separation fast, reduce the water content of mud significantly.Indoor and site test results shows that by being used in combination of vacuum extractor and gas permeable devices, the drainage system in the stockyard can apply the negative pressure of vacuum effect to whole yard sludge space, makes the water content of dredging silt to lower fast.On the one hand, yard sludge mud face descends fast, and volume dwindles fast, can be in the stockyard the more dredging silt of hydraulic reclamation, so just can reduce stockyard appropriation of land area; On the other hand, the water content in the stockyard reduces fast, has alleviated the difficulty of stockyard subsequent treatment, has also shortened the time that handle in the stockyard.
(2) drainage tail water is limpid, clay content is very low.The water water quality of extracting out is better, and concentration of suspension reaches direct emission standards between 8～29mg/L.
(3) solved well by negative pressure of vacuum and forced to release the drainage system silting problem that occurs in the water process.By using gas permeable devices, make that the drainage system in the whole stockyard is stabilized under the optimum vacuum, thereby effectively avoided the generation of silting phenomenon, guaranteed the unimpeded of space drainage system.
(4) installation technics of whole system is simple, and is with low cost.Whole system is exactly to be made up of vacuum extractor, space drainage system and gas permeable devices.System lays just process that connects, and is simple to operation.
Description of drawings
Fig. 1 is that the structure of a kind of ventilative vacuum space drainage system specifically of the present invention is established the pattern schematic diagram.
Fig. 2 is the comprehensive layout schematic diagram of a kind of ventilative vacuum space drainage system specifically of the present invention.
Wherein have: cofferdam 1, horizontal cross drainage drainage pipeline networks 2, horizontal longitudinal drainage pipeline 3, aqueduct 4, vacuum extractor 5, vertical plastic draining board 6, drag-line 7, timber 8, support 9, horizontal plastic draining board 10, sand bedding course 11, wireway 12, gas permeable devices 13, vacuum measurement table 14.
The specific embodiment
As depicted in figs. 1 and 2, the concrete steps of construction and theing contents are as follows:
1, framework space drainage system:
1) rapidoprint: carry out work such as filter pipe punching, cover filtering material and plastic draining board block in the materials processing place;
2) horizontal cross, the laying of longitudinal drainage passage: set up the horizontal cross drainage drainage pipeline networks 2 that is connected on the ground in cofferdam 1 earlier, horizontal longitudinal drainage pipeline 3, on cofferdam 1, set up vacuum extractor 5 and gas permeable devices 13, horizontal longitudinal drainage pipeline 3 is communicated with vacuum extractor 5 by aqueduct 4, be communicated with gas permeable devices 13 by wireway 12, on horizontal cross drainage drainage pipeline networks 2, be connected with vertical plastic draining board 6 side by side, the middle part of vertical plastic draining board 6 laterally connects horizontal plastic draining board 10, the top of vertical plastic draining board 6 connects drag-line 7, the two ends of drag-line 7 are fixed on the timber 8, form ventilative vacuum space drainage system; The vacuum of utilizing vacuum extractor 5 to regulate the space drainage system in the mud hydraulic reclamation process is got rid of the moisture in the mud, promotes mud-water separation.Prop up with support 9 in the big place of drag-line bent intermediate distortion.Along pipeline axial horizontal plastic draining board 10 is banded on the differing heights position of vertical plastic draining board 6 then.
2, lay sand bedding course and serous fluid of dredger fill: in the weir, lay on the ground filterability and permeability preferably medium sand sand bedding course 11 the horizontal drainage pipe network is buried, then can be in the weir serous fluid of dredger fill.The place of serous fluid of dredger fill is as far as possible away from plastic draining board, in order to avoid have influence on plastic draining board.
3, regulating system vacuum: after treating that dredging silt is buried whole sand bedding course, make the vacuum of space drainage channel reach optimal value by being used in combination of vacuum extractor 5, gas permeable devices 13 and vacuum measurement table 14.
4, draw water: vacuum extractor can have been bled draining after the vacuum for the treatment of the space drainage channel reached optimal value.After this draw water and hydraulic reclamation can carry out simultaneously, save man-hour.
In addition to the implementation, the present invention can also have other embodiments.The technical scheme that all employings are equal to replacement or equivalent transformation formation all drops on the protection domain that the present invention requires.
Claims (2)
1. the ventilative quick mud-water separation method of vacuum in a high-moisture dredging silt stockyard, it is characterized in that setting up the horizontal cross drainage drainage pipeline networks (2) that is connected on the ground in cofferdam (1) earlier, horizontal longitudinal drainage pipeline (3), on cofferdam (1), set up vacuum extractor (5) and gas permeable devices (13), horizontal longitudinal drainage pipeline (3) is communicated with vacuum extractor (5) by aqueduct (4), be communicated with gas permeable devices (13) by wireway (12), on horizontal cross drainage drainage pipeline networks (2), be connected with vertical plastic draining board (6) side by side, the middle part of vertical plastic draining board (6) laterally connects horizontal plastic draining board (10), the top of vertical plastic draining board (6) connects drag-line (7), the two ends of drag-line (7) are fixed on the timber (8), form ventilative vacuum space drainage system; Utilize vacuum extractor (5) to regulate the vacuum of space drainage system in the mud hydraulic reclamation process, regulate negative pressure of vacuum in the space drainage system in the stockyard, cofferdam, get rid of the moisture in the mud, promote mud-water separation by vacuum extractor and gas permeable devices.
2. the high-moisture dredging silt according to claim 1 stockyard quick mud-water separation method of vacuum of breathing freely, the vacustat that it is characterized in that the space drainage system is between 75～85kPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710132092A CN100584426C (en) | 2007-09-11 | 2007-09-11 | Ventilating vacuum fast mud-water separating method for dredging high-water content mud accumulation yard |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200710132092A CN100584426C (en) | 2007-09-11 | 2007-09-11 | Ventilating vacuum fast mud-water separating method for dredging high-water content mud accumulation yard |
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| CN101219297A CN101219297A (en) | 2008-07-16 |
| CN100584426C true CN100584426C (en) | 2010-01-27 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102330424B (en) * | 2011-07-05 | 2013-11-13 | 浙江广川工程咨询有限公司 | Vacuum preloading consolidation method for duplex vacuum tube well of blowing filling soft soil |
| CN102493427B (en) * | 2011-11-16 | 2014-09-10 | 河海大学 | Rapid drainage and rapid consolidation construction method for yard silt by using solidified soil as surcharge |
| CN107761670B (en) * | 2017-11-07 | 2020-07-24 | 南京盼源工程技术有限公司 | Method for optimally controlling effective volume of storage yard based on initial state control of dredged mud |
| CN108083610A (en) * | 2018-01-05 | 2018-05-29 | 中交第二航务工程勘察设计院有限公司 | The multiple spot of a kind of mud or mud vacuumizes quick desiccation facility |
| CN109987805B (en) * | 2019-01-10 | 2021-07-13 | 浙江海洋大学 | Channel dredging mud solidification equipment |
| CN110241806A (en) * | 2019-06-30 | 2019-09-17 | 华中科技大学 | A kind of method and crust layer forming crust layer on dredging silt slurry stockyard surface |
| CN110219321A (en) * | 2019-07-01 | 2019-09-10 | 付文堂 | A kind of pneumatic reinforcement means of heap body |
| CN110451761A (en) * | 2019-07-09 | 2019-11-15 | 中国电建集团华东勘测设计研究院有限公司 | The silt consolidation dehydration treatment equipment and method of bottom vacuum draining |
| CN110550848A (en) * | 2019-09-09 | 2019-12-10 | 中国电建集团华东勘测设计研究院有限公司 | Horizontal-arranged cathode vacuum electroosmosis sludge dewatering device and method |
| CN114134972A (en) * | 2021-10-09 | 2022-03-04 | 江苏盐城水利建设有限公司 | Movable horizontal drainage system and dynamic consolidation dewatering process for dredging sludge storage yard based on same |
| CN115947516A (en) * | 2022-12-22 | 2023-04-11 | 江苏鸿基水源科技股份有限公司 | Method for treating fluid mud by vacuum preloading |
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