CN101230568A - U-shaped soft vacuum dredged silt rapid drainage method - Google Patents
U-shaped soft vacuum dredged silt rapid drainage method Download PDFInfo
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- CN101230568A CN101230568A CNA2008100207105A CN200810020710A CN101230568A CN 101230568 A CN101230568 A CN 101230568A CN A2008100207105 A CNA2008100207105 A CN A2008100207105A CN 200810020710 A CN200810020710 A CN 200810020710A CN 101230568 A CN101230568 A CN 101230568A
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- 238000000034 method Methods 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000003110 molding sand Substances 0.000 claims description 24
- 239000004746 geotextile Substances 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims 1
- 239000010802 sludge Substances 0.000 abstract description 12
- 239000004576 sand Substances 0.000 abstract description 11
- 238000010276 construction Methods 0.000 abstract description 8
- 230000001105 regulatory effect Effects 0.000 abstract description 6
- 238000013459 approach Methods 0.000 abstract description 5
- 238000013022 venting Methods 0.000 abstract 4
- 238000005086 pumping Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000007596 consolidation process Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000001684 chronic effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
A U-shaped low vacuum dredging sludge rapid drainage method relates to a method which rapidly deals with the drainage of low concentration dredging sludge generated in the engineering construction of water conservancy, harbor approach, and substantially increases the concentration of the dredging sludge in the sludge stockyard. A U-shaped drainage system is formed by erecting a U-shaped sand bag in advance in a closing dam. The two ends of the U-shaped sand bag are respectively connected with an evacuating device and a venting device with a venting valve to form a space drainage system. In order to prevent clogging, when water is pumped, the venting valve is regulated to cause the drainage system to pump water in the low vacuum. During the pumping process, the venting valve is regulated according to the water content of the sludge in the closing dam; the vacuum pressure in the drainage system is gradually increased to guarantee the drainage efficiency of the system. The invention has simple technique and low cost, and is suitable for the large area of stockyard disposal project in the low concentration dredging sludge.
Description
Technical field
The present invention a kind ofly carries out the method that quick draining is handled, increased substantially dredging silt concentration in the mud stockyard to the low concentration dredging silt that produces in water conservancy, the harbor approach engineering construction, be applicable to low concentration dredging silt large tracts of land stockyard disposal engineering, belong to the technical field of water conservancy and harbor approach engineering.
Background technology
The fast, economical of China development has brought the climax of water conservancy, harbor approach engineering construction, in the dredging in various river courses, navigation channel with widen in the process and the harbour is newly-built, in the extension project, produce a large amount of discarded dredging silts inevitably.According to incompletely statistics, the annual discarded dredging silt of China reaches 10,000 ten thousand m
3More than: wherein the coastal area such as the East Sea, area, the North Sea have produced the dredging silt of a great deal of, can keep normal flood carrying capacity and guarantee the unimpeded of thoroughfare for the river course simultaneously, and the dredging works amount in landlocked river course is also considerable.At present most landlocked dredging silts are to discard to throw in land to fill out district or low-lying area, some takies original fish pond or cultivated land, and present soil preciousness, land expropriation cost is very high, and for example the funds of south water to north east line first phase land acquisition account for about 60% of engineering total cost.
Strand is inhaled because China's dredging silt often adopts, rake suction mode is handled to the stockyard by line transportation, and the dredging silt that precipitates in the stockyard contains a large amount of water, and water content often up to 3～4 times of liquid limit, belongs to low concentration mud.If the moisture in the low concentration mud can be discharged as early as possible, will increase substantially the concentration of stockyard dredging silt, reduce the required area in stockyard effectively, reduce construction costs, reduce the contradiction between large-area land acquisition and the mass interest.
The technology of present existing raising low concentration mud, mud is to add the short heavy agent of chemistry, perhaps uses plant equipment such as centrifuge to realize.Utilize existing these technology, the amount of sludge of handling is smaller usually, and unit price cost height generally only is applicable to small-sized municipal engineering, sewage treatment project etc., can not satisfy the actual requirement that a large amount of dredging silts of the generation of water conservancy, harbor approach engineering construction are disposed.
Summary of the invention
Technical problem: the purpose of this invention is to provide a kind of U type soft vacuum dredged silt rapid drainage method, big at low concentration dredging silt generation, water content is high, natural drainage is very slow, deposition discharging consolidation chronic problem, in the mud stockyard, set up U type drainage system in advance, in drainage system, apply the low vacuum negative pressure, discharge the moisture in the mud fast, to reach the moisture in the quick discharge high-moisture mud, within the yard sludge dredge fill phase, increase substantially the purpose of yard sludge concentration.
Technical scheme: whole system of the present invention is made up of vacuum extractor, U type drainage system and the gas permeable devices that is communicated with atmosphere that valve is housed, and construction technology is simple, and is with low cost.The solution of the present invention is as follows:
In cofferdam, mud stockyard, set up the U molding sand bag of diameter 5.0～10.0cm, the two ends of U molding sand bag are fixing with timber (or mao bamboon), the two ends of U molding sand bag are towards arranging along the stockyard length direction, the horizontal range at U molding sand bag two ends is about 1.0m, two rows are lined up along the stockyard width respectively in the two ends of U molding sand bag, and the spacing distance between the U molding sand bag is decided according to actual engine request.Then, lay diameter (4.0～7.0cm) pvc pipes with holes (outside wrap up in geotextiles) respectively at U molding sand bag interior less than the sand pocket diameter, the pvc pipe at U molding sand bag two ends is connected to the horizontal pvc pipe that is fixed on the timber top, the horizontal pvc pipe at two ends more respectively be laid in the cofferdam on vacuum extractor be connected with gas permeable devices.Utilizing vacuum extractor to apply negative pressure of vacuum draws water, the valve opening degree that utilizes gas permeable devices is according to negative pressure of vacuum value and air-flow in the sand pocket drainage system in the mud water content adjusting stockyard, cofferdam, prevent the pump process generation silting of high-moisture dredging silt, guarantee the unobstructed of pump process drainage channel.
In the dredging silt stockyard, set up in advance after the U type drainage system described above, in the hydraulic reclamation process of dredging silt, by regulating the open degree of gas permeable devices valve, make the vacuum in the drainage system be in reduced levels, along with the moisture in the mud is drawn out of, the gas permeable devices valve opening degree is regulated in the reduction of mud water content, progressively increases the vacuum in the drainage system.Under the negative pressure of vacuum effect, can produce air-flow in the draining sand pocket, it is inner and surperficial that air-flow acts on the draining sand pocket, prevents because forming waterproof mud rete causes the silting problem on every side with the fine particle suction drain system in the mud or at drainage channel in the negative pressure of vacuum water absorption course.Under the air-flow effect in low vacuum and draining sand pocket, the U type soft vacuum dredged silt rapid drainage method that the present invention proposes can be extracted the stockyard out at short notice up to the considerable part water yield in the dredging silt of 3.0～4.0 times of liquid limit water content, the water content of dredging silt is dropped to 1.0～1.5 times of liquid limits.
Beneficial effect: beneficial effect of the present invention is:
(1) can be with blowing-filling sludge quick water content that reduce dredging silt significantly in the construction period in mud stockyard, discharge large quantity of moisture, improve the concentration of mud, thereby reduce the storage space that need hold a large amount of dredging silts significantly, economize the land resource, reduce the social contradications of expropriation of land.
(2) after mud drew water end, pvc pipe can reclaim, and can reuse together with vacuum extractor and gas permeable devices, further saves cost.Simultaneously U molding sand bag can be used for the subsequent treatment in mud stockyard, and, preloading discharging consolidation fixed as traditional vacuum etc. are the subsequent treatment in the mud stockyard condition that facilitates.
(3) because blowing-filling sludge has reduced the water content of dredging silt significantly in the construction period, improved the intensity of dredging silt, reduced the subsequent treatment difficulty in mud stockyard, provide good condition for saving the stockyard occupation of land time.
(4) owing to have the function of the pump process generation silting that prevents the high-moisture dredging silt; make the mud fine grained can not discharge by drainage system substantially; guaranteed that the water of extracting out can reach direct emission standards, concentration of suspension need not tail water is handled between 5～20mg/ rises.
Description of drawings
Fig. 1 is the formation schematic diagram of a filter pipe of the present invention.
Fig. 2 is the formation schematic diagram of a U molding sand bag unit of the present invention.
Fig. 3 is a band valve gas permeable devices schematic diagram of the present invention.
Fig. 4 is that space of the present invention drainage system constitutes schematic diagram.
Fig. 5 is that U type soft vacuum dredged silt rapid drainage method of the present invention is comprehensively arranged schematic diagram.
Have among the above figure: pvc pipe 1, geotextiles 2, filter pipe 3, U molding sand bag 4, timber 5, cofferdam 6, vacuum extractor 7, gas permeable devices 8, first wireway 9, horizontal longitudinal drainage pipeline 10, second wireway 11, the vertical wireway 12 of level, the first horizontal cross gutter 13, the second horizontal cross gutter 14, ventilative valve 15, vacuum meter 16.
The specific embodiment
1, framework space drainage system:
(1) rapidoprint: to the pvc pipe punching, the 1 jacket layer geotextiles 2 of the pvc pipe after the punching is formed filter pipe 3, processing U molding sand bag 4 and timber (or mao bamboon) 5 are provided with the filter pipe that processes in the U molding sand bag, carry out work such as various gutters block simultaneously;
(2) set up U molding sand bag: ready U molding sand bag is moved on in the cofferdam 6, the two ends of U molding sand bag are towards arranging along the stockyard length direction, the level interval and the vertical interval of U molding sand bag depend on the circumstances, with the two ends vertical fixing of timber (or mao bamboon) with U molding sand bag, the degree of depth that timber (or mao bamboon) is squeezed in the mud will guarantee that sand pocket is not washed upside down by mud in blowing the silt process;
(3) set up vacuum extractor and gas permeable devices and be communicated with U molding sand bag: on the ground of cofferdam, arrange vacuum extractor 7 and gas permeable devices 8, vacuum extractor is connected to horizontal longitudinal drainage pipeline 10 by wireway 9, gas permeable devices is by the vertical wireway 12 of wireway 11 connection levels, U molding sand bag two ends are connected and fixed on the horizontal cross gutter 13 on the timber (or mao bamboon), 14, wherein horizontal cross gutter 13 is connected to horizontal longitudinal drainage pipe 10, like this an end of sand pocket just and gas permeable devices be connected, and be connected to the vertical wireway 12 of level in the horizontal cross gutter 14, like this other end of sand pocket just and gas permeable devices be connected, at this moment whole space drainage system sets up to be finished.
2, regulating system vacuum and drawing water: set up behind the drainage system of U type space just in the past blowing-filling sludge in the cofferdam, treat to begin to draw water after mud covers the porose position of filter pipe, the valve 15 of will breathing freely earlier when drawing water is opened fully, the ventilative valve of adjusting slowly allows vacuum meter 16 stable reading that connect sand pocket under certain low vacuum state then, guarantee the unimpeded of whole drainage system passage, the silting situation does not take place; In pump process, according to the open degree that the water content of mud in the cofferdam is regulated ventilative valve, progressively increase the vacuum in the drainage system, guarantee the drainage efficiency of system.
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 (3)
1. U type soft vacuum dredged silt rapid drainage method, it is characterized in that on the ground of cofferdam (6), setting up earlier many row's U molding sand bags (4), wherein the two ends of U molding sand bag (4) are connected with company's vertical wireway of level (12) with horizontal longitudinal drainage pipeline (10) by the first horizontal cross gutter (13) or the second horizontal cross gutter (14) respectively, horizontal longitudinal drainage pipeline (10) connects vacuum extractor (7), and the vertical wireway of level (12) connects gas permeable devices (8) and forms U type space drainage system; In mud hydraulic reclamation process and hydraulic reclamation between the later stage, regulate ventilative valve (15) and allow drainage system be under the low vacuum to draw water, guaranteed the unimpeded of drainage channel, promote mud-water separation, more significantly improve the concentration of mud.
2. U type soft vacuum dredged silt rapid drainage method according to claim 1, it is characterized in that U molding sand bag (4) is fixed on the timber (5), insert filter pipe (3) in U molding sand bag (4), the top of filter pipe (3) is connected with the first horizontal cross gutter (13) or the second horizontal cross gutter (14).
3. U type soft vacuum dredged silt rapid drainage method according to claim 1, the inside that it is characterized in that filter pipe (3) are pvc pipe (1) with holes, are surrounded by one deck geotextiles (2) in the outside of pvc pipe (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100207105A CN101230568B (en) | 2008-02-22 | 2008-02-22 | U-shaped soft vacuum dredged silt rapid drainage method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100207105A CN101230568B (en) | 2008-02-22 | 2008-02-22 | U-shaped soft vacuum dredged silt rapid drainage method |
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| CN101230568A true CN101230568A (en) | 2008-07-30 |
| CN101230568B CN101230568B (en) | 2010-06-16 |
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| CN2008100207105A Expired - Fee Related CN101230568B (en) | 2008-02-22 | 2008-02-22 | U-shaped soft vacuum dredged silt rapid drainage method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306269A (en) * | 2013-05-23 | 2013-09-18 | 南京盼源工程技术有限公司 | Anti-blocking controllable negative pressure quick solidifying method for flow state dredging silt |
| CN105274981A (en) * | 2015-03-30 | 2016-01-27 | 盐城工学院 | Method for rapidly and ecologically treating coastal beach sludge |
| CN105386434A (en) * | 2015-10-19 | 2016-03-09 | 河海大学 | Umbrella type drainage device and drainage method thereof |
| CN105776797A (en) * | 2016-03-01 | 2016-07-20 | 浙江工业大学工程设计集团有限公司 | River sludge vacuum dehydration treatment cart |
| CN107761670A (en) * | 2017-11-07 | 2018-03-06 | 南京盼源工程技术有限公司 | Stockyard dischargeable capacity method for optimally controlling based on the control of dredged mud original state |
| CN109396177A (en) * | 2018-08-31 | 2019-03-01 | 葛洲坝中固科技股份有限公司 | The restoration of the ecosystem structure and its construction method and restorative procedure of a kind of petroleum hydrocarbon-heavy-metal composite pollution mud |
| 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 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2832913Y (en) * | 2005-10-13 | 2006-11-01 | 广州四航工程技术研究院 | Pumping drainage system for rapid curing of shallow surface layer of hydraulic-fill sludge |
| CN1818222A (en) * | 2006-03-21 | 2006-08-16 | 东南大学 | Cosolidation with sludge dredging and water draining |
-
2008
- 2008-02-22 CN CN2008100207105A patent/CN101230568B/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306269A (en) * | 2013-05-23 | 2013-09-18 | 南京盼源工程技术有限公司 | Anti-blocking controllable negative pressure quick solidifying method for flow state dredging silt |
| CN103306269B (en) * | 2013-05-23 | 2015-09-30 | 南京盼源工程技术有限公司 | The anti-blocking controllable negative pressure quick consolidation method of fluidised form dredging silt |
| CN105274981A (en) * | 2015-03-30 | 2016-01-27 | 盐城工学院 | Method for rapidly and ecologically treating coastal beach sludge |
| CN105274981B (en) * | 2015-03-30 | 2017-06-09 | 盐城工学院 | A kind of method of coastal tidal mud quick ecologicalization treatment |
| CN105386434A (en) * | 2015-10-19 | 2016-03-09 | 河海大学 | Umbrella type drainage device and drainage method thereof |
| CN105776797A (en) * | 2016-03-01 | 2016-07-20 | 浙江工业大学工程设计集团有限公司 | River sludge vacuum dehydration treatment cart |
| CN105776797B (en) * | 2016-03-01 | 2018-05-25 | 浙江工业大学工程设计集团有限公司 | Riverway sludge vacuum dehydration handles vehicle |
| CN107761670A (en) * | 2017-11-07 | 2018-03-06 | 南京盼源工程技术有限公司 | Stockyard dischargeable capacity method for optimally controlling based on the control of dredged mud original state |
| CN109396177A (en) * | 2018-08-31 | 2019-03-01 | 葛洲坝中固科技股份有限公司 | The restoration of the ecosystem structure and its construction method and restorative procedure of a kind of petroleum hydrocarbon-heavy-metal composite pollution mud |
| CN109396177B (en) * | 2018-08-31 | 2023-09-08 | 葛洲坝中固科技股份有限公司 | Ecological restoration structure of petroleum hydrocarbon-heavy metal composite pollution sludge, construction method thereof and restoration method thereof |
| 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 |
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| Publication number | Publication date |
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| CN101230568B (en) | 2010-06-16 |
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Granted publication date: 20100616 |