CN101560754B - Construction process for blowing-filling sludge and reclaiming land from sea and device thereof - Google Patents
Construction process for blowing-filling sludge and reclaiming land from sea and device thereof Download PDFInfo
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- CN101560754B CN101560754B CN2009100830995A CN200910083099A CN101560754B CN 101560754 B CN101560754 B CN 101560754B CN 2009100830995 A CN2009100830995 A CN 2009100830995A CN 200910083099 A CN200910083099 A CN 200910083099A CN 101560754 B CN101560754 B CN 101560754B
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Abstract
The invention relates to a construction process for blowing-filling sludge and reclaiming land from sea and a device thereof. The device comprises a sludge dehydrating and grading system A, a solidification treatment system B and an improved slurry paving system C. The construction process comprises the following process flows: (1) in a designated area, blowing-filling the slurry discharged according to a common blowing-filling process or by an overflow device to a designated level to form a foundation slurry layer; (2) paving a permeable isolating layer e on the surface of the foundation slurry layer; (3) feeding sludge slurry a into the sludge dehydrating and grading system A to make the coarse concentrated slurry with low water content and coarse grain diameter enter a slurry and curingagent mixing device; (4) conveying a curing agent of a curing agent storage device to the slurry and curing agent mixing device through a curing agent conveying device; (5) stirring the slurry and th e curing agent, and evenly stirring a mixture of the slurry and the curing agent through a discharge device to form modified slurry to be conveyed to a required place; and (6) adopting the paving system to pave the modified slurry to the designated thickness on the permeable isolating layer e layer by layer.
Description
(1) technical field
The present invention relates to a kind of construction technology and device thereof of blowing-filling sludge and reclaiming land from sea, belong to the civil engineering groundwork processing technology field.
(2) background technology
There is a large amount of engineerings of reclaiming fields from the sea the coastal area of China in recent years, and as areas such as Tianjin, Bay areas, coastal area, Guangdong, Yangtze River Delta, the Delta of the Pearl River, wherein only intend reclaiming fields from the sea 170 square kilometres in the Binhai New Area in Tianjin.The engineering of much reclaiming fields from the sea of China is to adopt the blowing filling sludge ground-making method at present, is about to the bottom silt hydraulic reclamation to enclosing in the low bank between fields, and this mud becomes the ground with certain bearing capacity through after certain processing.
The main method of handling these blowing-filling sludges at present is to adopt consolidation to carry out ground stabilization after falling to becoming silted up to handle.But owing to blowing-filling sludge clay content height, water content big (usually up to 400-500%), bad hydraulic permeability, the deposition of necessary process several years and air-dry, ground is had bear the supporting capacity of the load of follow-up construction (as the consolidation construction etc.), so long time waste is unacceptable.
(3) summary of the invention
The object of the present invention is to provide a kind of construction technology and device thereof of blowing-filling sludge and reclaiming land from sea, on the basis of existing reclamation by pumping filling technology, comprise sludge dewatering and hierarchy system, curing treatment system, carry construction equipment such as paving system by a cover, viscosity component content height, the water content that forms in original technology construction back is big, lay certain thickness improvement soil layer fast on the mud of bad hydraulic permeability, this improvement soil layer makes this bearing capacity of foundation soil can satisfy follow-up construction requirement through the short-term deposition or after solidifying.Thereby can solve the problem that siltation in the reclamation by pumping filling is slow, can not carry out follow-up construction fast.
The present invention relates to blowing filling sludge ground-making construction technique and device thereof in a kind of the reclaiming fields from the sea, have and fast, efficiently to construct the characteristics that certain thickness has enough supporting capacity crust layer grounds on the blowing-filling sludge top layer.
A kind of middle blowing filling sludge ground-making construction technique and device thereof of reclaiming fields from the sea of the present invention, after the blowing-filling sludge mud of pumping arrives the zone of specifying reclamation by pumping filling, adopt special process that part water in the mud and fine particle component are separated, form the concentrated mud that water content is lower, grain diameter is thicker, water content in this part mud and size distribution can change by regulating technological parameter; According to circumstances need then, this part mud can be mixed or do not mix with curing compound with a certain proportion of curing compound, adopt certain technology to be layed in the surface of blowing-filling sludge layer then, form the soil layer that certain thickness water content is lower and particle diameter is thicker or solidify soil layer.
1, the construction equipment of blowing-filling sludge mainly comprised sludge dewatering and grading system A during a kind of processing of the present invention was reclaimed fields from the sea, and solidified treatment system B, and the paving system C of improvement mud.
(1) sludge dewatering and grading system A: comprising: the silt particle shunting cone body device 4 of foreign material screening device 1, pumping installations 2, pressure control device 3, different size, underflow device 5, overflow mechanism 6.Reciprocating sieve that this foreign material screening device 1 is one group of certain screen-aperture or rotary screen or and the two combination, can will screen out in order to avoid cause the pipeline blockage of subsequent technique greater than foreign material such as the shell of certain size, stones in the serous fluid of dredger fill; Pumping installations 2 comprises the pump of pumping line and power controlled, mud mud can be delivered to cone body device 4 with certain speed and compression pump; This pressure control device 3 comprises pressure control table and pressure regulator, realizes the control to rate of pumping and pressure.Foreign material screening device 1, pumping installations 2, pressure control device 3, cone body device 4 after promptly mud screens out foreign material through foreign material screening device 1, by pumping installations 2 pumpings, enter cone body device 4 by pressure control device 3 for being connected in series again.This cone body device 4 is cones of internal diameter 75-300mm suitable for reading, end opening internal diameter 10-25mm, high 500-2000mm; The upper end of cone body device 4 connects overflow mechanism 6; This overflow mechanism 6 is current drainage pipelines that an internal diameter is 10-50mm, and overflow mud is discharged outside the bullet.The lower end of this cone body device 4 connects underflow device 5; This underflow device 5 is current drainage pipelines that an internal diameter is 5-15mm, high 40-120mm, the underflow water content is lower, that grain diameter is thicker coarse granule concentrates mud and discharges cone body device 4, the pipeline opening of underflow device 5 places the top of curing compound mixing arrangement 9, concentrated mud is input to solidifies among the treatment system B.
When mud mud after pumping installations 2 tangentially enters cone body device 4 with certain pressure and speed, in the rotation of the inner high speed of cone body device 4, produce centrifugal force field.Under action of centrifugal force, around the grain fraction that density is big is thrown toward, and move downward along wall, discharge from underflow device 5; The slurry that density is little is moved to middle and is moved upward, and discharges from overflow mechanism 6 as overflow at last, and the composition that the grain diameter in the mud is thicker is separated like this.But with pumping installations 2 is the pressure control device 3 and the cone body device 4 (as shown in Figure 2, a parallel connection is 3 among the figure, can continue to expand by connecting pipeline section 12 as required) of trunk line branch 2-200 different size in parallel, raising silt particle separating rate.
(2) solidify treatment system B: comprise that curing compound Storage appts. 7, curing compound conveying device 8, mud and curing compound mixing arrangement 9, mud and curing compound stir and drawing mechanism 10, conveying device 11.Curing compound Storage appts. 7 can be suitable geometries such as cylinder, Fang Ti, and its volume size can be decided as required, is mainly used in to deposit curing compound; Be connected with mixing arrangement 9 by curing compound conveying device 8.Conveying device 8 is pipelines of internal diameter 10-100mm, is connected the appropriate location of curing compound Storage appts. 7, by interior dress spiral propeller or compressed air the curing compound of curing compound Storage appts. 7 is delivered to mud and curing compound mixing arrangement 9.Mud and curing compound mixing arrangement 9 tops open wide and receive the concentrated mud that underflow device 5 enters and the curing compound of curing compound conveying device 8 inputs, and the bottom has opening to connect mud to stir and drawing mechanism 10 with curing compound.Mud and curing compound stir and drawing mechanism 10 can be the slush pump of certain power, mud in mud and the curing compound mixing arrangement 9 and curing agent mixture can be stirred by slush pump and form improvement mud, and deliver to the place that needs by conveying device 11.Conveying device 11 is the pipeline of 50-150mm for internal diameter, and its sidewall is connected with one or several nozzles, adopts certain facility that a certain amount of compressed air is injected into by nozzle in the pipeline of conveying device 11, to reduce to improve the transporting resistance of mud.Conveying device 11 ends leave the tube connector segment interface, will solidify the improvement mud input paving system C that handled by pipeline section 12.
(3) the paving system C of improvement mud comprises: the connection pipeline section 12 that can connect fast, the flexible pipe that can move (perhaps belt conveyer) 13 and carrying and mobile device 14 (can float over the mud surface and can move for personnel and equipment).
2, the construction technology of blowing-filling sludge during a kind of processing of the present invention is reclaimed fields from the sea, its technological process is as follows:
(1) in the appointed area, will be according to the mud of discharging in sludge dewatering among common hydraulic reclamation technology or employing the present invention and the overflow mechanism in the grading system A 6, hydraulic reclamation is to specifying absolute altitude, the formation base mud;
(2) lay the permeable separation layer e of one deck on basic mud layer surface, to prevent that the higher coarse grain of mass density from directly concentrating mud and sinking in the low-density basic mud layer.This separation layer can be the sheet material that adopts braidings such as bamboo wood, timber, straw, geotextiles and goods thereof, plastics establishment cloth and goods thereof etc.
(3) mud mud a makes the directly concentrated mud of coarse grain that the underflow water content is lower, grain diameter is thicker enter mud and curing compound mixing arrangement 9 among the curing treatment system B through aforementioned sludge dewatering and grading system A.
(4) solidify the curing compound of curing compound Storage appts. 7 among the treatment system B by curing compound conveying device 8 input mud and curing compound mixing arrangements 9, the curing compound volume is 0～30% of a quality of mud fluid, and the input speed of curing compound directly concentrates the speed adjustment of mud according to the coarse grain that enters mud and curing compound mixing arrangement 9.
(5) mud and curing compound stir with drawing mechanism 10 with mud and curing agent mixture stir form improvement mud and with certain speed by conveying device 11 deliver to need the place.
(6) adopt paving system on permeable isolating, successively the improvement mud that above-mentioned steps (5) obtains to be laid to appointed thickness by certain hour interval and certain thickness layering.The time interval that lift height and each layer pave is mainly determined according to the characteristic of basic mud, is not sunk in the basic mud layer to guarantee the improvement mud layer.
(4) description of drawings
Figure 1 shows that apparatus of the present invention structure chart and construction flow chart
Figure 2 shows that sludge dewatering and grading system A further explanatory drawings
Number in the figure is as follows:
A sludge dewatering and hierarchy system B solidify treatment system C mud paving system
A mud b dykes and dams d blowing-filling sludge layer e permeable isolating
The f coarse grain directly concentrates mud and curing agent mixture layer g curing compound
1 foreign material screening device, 2 pumping installations, 3 pressure control devices, 4 cone body devices
5 underflow devices, 6 overflow mechanisms, 7 curing compound Storage appts.s, 8 curing compound conveying devices
9 mud and curing compound mixing arrangement 10 stir and drawing mechanism 11 conveying devices
12 connect pipeline section 13 moves flexible pipe or belt conveyer 14 carrying and mobile devices
(5) specific embodiment
Below in conjunction with drawings and Examples, technical scheme of the present invention is described further.
The construction equipment of blowing-filling sludge comprised sludge dewatering and grading system A, curing treatment system B and mud paving system C during a kind of processing of the present invention was reclaimed fields from the sea.
The specifications parameter of the device that sludge dewatering and grading system A comprise and each device is as follows: the cone body device 4, underflow device 5, the overflow mechanism 6 that comprise pumping installations 2, pressure control device 3, different size.Pumping installations 2 comprises that internal diameter is that current drainage pipeline and the power of 25mm is the pump of 2.5KW; Pressure control device 3 comprises pressure control table and a rotatable grip, regulates pipeline flow by rotating handles; By regulating pumping installations 2 and pressure control device 3, mud is entered in the cone body device 4 with the pressure of 0.25MPa; Cone body device 4 is cones of internal diameter 300mm suitable for reading, end opening internal diameter 20mm, high 1000mm; The upper end of cone body device 4 connects overflow mechanism 6; Overflow mechanism 6 is current drainage pipelines that an internal diameter is 20mm, and overflow mud is discharged outside the bullet; The lower end of cone body device 4 connects underflow device 5; Underflow device 5 is current drainage pipelines that an internal diameter is 10mm, long 40mm.Concrete sludge dewatering and classification process are as follows: mud a enters dredging tube, the direct hydraulic reclamation of a part is to dykes and dams b, component part as the basic mud d of ground, another part mud enters 20 cone body devices 4 (only expressing 3 among Fig. 2) that specification is identical with the pressure of 0.25Mpa respectively through the regulation and control of pumping installations 2 and pressure control device 3, high pressure rotary shunting through cone body device 4, fine particle slurry composition is discharged from overflow mechanism 6, and the underflow coarse granule concentrates the mud composition and drains into mud and the curing compound mixing arrangement 9 that solidifies in the treatment system through underflow device 5.
The device that curing treatment system B comprises and specifications parameter of each device are as follows: comprise curing compound Storage appts. 7, curing compound conveying device 8, mud and curing compound mixing arrangement 9, mud and curing compound stirring and drawing mechanism 10, conveying device 11.Curing compound Storage appts. 7 is 5 * 5 * 5m
3The square container, be mainly used in and deposit curing compound; Curing compound conveying device 8 is that an internal diameter is the pipeline of dress spiral propeller in 40mm contains; Mud and curing compound mixing arrangement 9 internal diameter 3000mm, high 2000mm; Power when mud and curing compound stir with drawing mechanism 10 rotations is 5KW.Conveying device 11 is the pipeline of 50-150mm for internal diameter, and its sidewall has 3 nozzles to adopt air compressor that a certain amount of compressed air is injected in the pipeline of conveying device 11 by nozzle.Concrete curing processing procedure is as follows: the curing compound in the curing compound Storage appts. 7 enters mud and curing compound mixing arrangement 9 by curing compound conveying device 8, coarse granule concentrates mud and also enters mud and curing compound mixing arrangement 9 through underflow device 5 simultaneously, curing compound and coarse granule concentrate mud evenly to be stirred through mud and curing compound stirring and drawing mechanism 10 after mixing, obtain solidified earth, and be delivered to the appointed place through conveying device 11.Owing to contain curing compound, therefore just can harden, thereby have certain intensity, and reach the bearing capacity of foundation requirement in the mixture through the very short time.
The device that mud paving system C comprises is the pipeline section 12 that can connect fast, movably flexible pipe (or belt conveyer) 13, carrying and mobile device 14.
(1) embodiment one
The mud of discharging in the overflow mechanism 6 in the sludge dewatering and grading system A among common hydraulic reclamation technology or the present invention is adopted, hydraulic reclamation to 3 meter absolute altitude place in enclosing low bank between fields, formation base mud in marine reclamation land place at certain beach.Lay one deck geotechnique quilt on this mud layer surface, basis, the geotechnique can be prevented effectively that by the large tracts of land cystic structures of making for geotextile the higher coarse grain of mass density from directly concentrating mud and sinking in the low-density basic mud layer.
Isolated improvement mud mainly is the powder composition of particle diameter greater than 30 μ m in sludge dewatering and the grading system A, because this part improvement mud transmission coefficient is bigger, can satisfy follow-up construction requirement for bearing capacity through the short-term deposition, thus curing compound can not added, promptly without the B of system.Improvement mud adopts belt conveyer 13 and carrying and mobile device 14 thereof to be delivered to the appointed place, according to first floor 20cm, second layer 30cm, the 3rd layer of 60cm, the bed thickness of the 4th layer of 90cm was every 20 days shop one decks, form the improvement mud layer of 2 meters thickness on geotechnique's quilt, this mud layer consolidation rate can reach certain bearing capacity in the short period faster than basic mud, being convenient to follow-up construction machinery marches into the arena, simultaneously, the geotechnique is helped quickening the fixed of basic mud by the soil pressure on upper strata.
(2) embodiment two
The mud of discharging in the overflow mechanism 6 in the sludge dewatering and grading system A among common hydraulic reclamation technology or the present invention is adopted, hydraulic reclamation to 2 meter absolute altitude place in enclosing low bank between fields, formation base mud in marine reclamation land place at certain beach.Lay one deck chaste tree on this mud layer surface, basis and take off, chaste tree takes off the two-dimensional structure into twigs of the chaste tree braiding, can prevent effectively that the higher coarse grain of mass density from directly concentrating mud and sinking in the low-density basic mud layer.
The concentrated mud of isolated coarse granule mainly is the powder composition of particle diameter less than 50 μ m in sludge dewatering and the grading system A, needs to add curing compound, curing compound cement mixing content 8%.20 cone body devices 4 are 0.03 ton/second by the general speed that underflow device 5 is input to mud and curing compound mixing arrangement 9, and then the speed of curing compound input is 2.4 Kilograms Per Seconds.System A separates dewaters and the improvement mud of deviating from fine particle fully mixes with curing compound through overcuring treatment system B.
Adopt removable flexible pipe 13 and carrying and mobile device 14 thereof to be delivered to the appointed place in the improvement mud that is mixed with curing compound, according to first floor 20cm, second layer 30cm, the 3rd layer of 50cm, the bed thickness of the 4th layer of 50cm was every 15 days shop one decks, take off the improvement mud layer that forms 1.5 meters thickness on the layer in chaste tree, this mud layer consolidation rate is faster than basic mud, can reach certain bearing capacity in the short period, being convenient to follow-up construction machinery marches into the arena, simultaneously, chaste tree takes off the soil pressure on upper strata, helps quickening the fixed of basic mud.
Claims (5)
1. the construction equipment of a blowing-filling sludge and reclaiming land from sea, it is characterized in that: this device comprises sludge dewatering and hierarchy system (A), solidifies treatment system (B), and the paving system (C) of improvement mud:
Sludge dewatering and hierarchy system (A): comprising: foreign material screening device (1), pumping installations (2), pressure control device (3), cone body device (4), underflow device (5), overflow mechanism (6); Foreign material screening device (1), pumping installations (2), pressure control device (3), cone body device (4) are for being connected in series, be after mud screens out foreign material through foreign material screening devices (1), by pumping installations (2) pumping, enter cone body device (4) by pressure control device (3) again; The upper end of cone body device (4) connects overflow mechanism (6), and overflow mud is discharged outside the bullet; The lower end of this cone body device (4) connects underflow device (5), and the underflow water content is lower, that grain diameter is thicker coarse granule concentrates mud and discharges cone body device (4); The pipeline opening of underflow device (5) places the top of curing compound mixing arrangement (9), concentrated mud is input to solidifies in the treatment system (B); With pumping installations (2) is the pressure control device (3) and the cone body device (4) of trunk line branch 2-200 different size in parallel;
Solidify treatment system (B): comprising: curing compound Storage appts. (7), curing compound conveying device (8), mud and curing compound mixing arrangement (9), mud and curing compound stir and drawing mechanism (10), conveying device (11); Be connected with curing compound mixing arrangement (9) with mud by curing compound conveying device (8); Curing compound conveying device (8) is the pipeline of internal diameter 10-100mm, be connected the appropriate location of curing compound Storage appts. (7), the curing compound of curing compound Storage appts. (7) be delivered to mud and curing compound mixing arrangement (9) by interior dress spiral propeller or compressed air; Mud and curing compound mixing arrangement (9) top open wide and receive the concentrated mud that underflow device (5) enters and the curing compound of curing compound conveying device (8) input, the bottom has opening to connect mud and curing compound stirs and drawing mechanism (10), and mud and curing compound stirring are the slush pump of certain power with drawing mechanism (10); Conveying device (11) is the pipeline of 50-150mm for internal diameter, and its sidewall is connected with one or several nozzles and is used for injecting compressed air; Conveying device (11) end leaves the tube connector segment interface, will solidify the improvement mud input paving system of handling (C) by connecting pipeline section (12);
The paving system (C) of improvement mud comprises: the connection pipeline section (12) that can connect fast, the flexible pipe that can move or belt conveyer (13) and carrying and mobile device (14).
2. the construction equipment of a kind of blowing-filling sludge and reclaiming land from sea according to claim 1, it is characterized in that: described foreign material screening device (1) is one group of reciprocating sieve, perhaps rotary screen, perhaps the combination of reciprocating sieve and roller sieve screens out the foreign material greater than certain size in the serous fluid of dredger fill in order to avoid cause the pipeline blockage of subsequent technique.
3. construction technology of utilizing the described construction equipment of claim 1 to carry out blowing-filling sludge and reclaiming land from sea, be on original mud, to lay the certain thickness improvement soil layer of one deck fast, this improvement soil layer is through the short-term deposition or after solidifying, make this bearing capacity of foundation soil can satisfy follow-up construction requirement, it is characterized in that: this technology idiographic flow is as follows:
1. in the appointed area, will adopt the sludge dewatering and the middle mud of discharging of the overflow mechanism (6) in the hierarchy system (A) of the construction equipment of blowing-filling sludge and reclaiming land from sea, hydraulic reclamation is to specifying absolute altitude, the formation base mud;
2. lay the permeable separation layer (e) of one deck on basic mud layer surface, to prevent that the higher coarse grain of mass density from directly concentrating mud and sinking in the low-density basic mud layer;
3. mud mud (a) makes the directly concentrated mud of coarse grain that the underflow water content is lower, grain diameter is thicker enter mud and curing compound mixing arrangement (9) in the curing treatment system (B) through aforementioned sludge dewatering and hierarchy system (A);
4. the curing compound that solidifies curing compound Storage appts. (7) in the treatment system (B) is by curing compound conveying device (8) input mud and curing compound mixing arrangement (9), and the input quantity of curing compound directly concentrates the speed and the quantity adjustment of mud according to the coarse grain that enters mud and curing compound mixing arrangement (9);
5. mud and curing compound stir with drawing mechanism (10) with mud and curing agent mixture stir form improvement mud and with certain speed by conveying device (11) deliver to need the place;
6. adopting paving system to go up the improvement mud that successively 5. step is obtained by certain hour interval and certain thickness layering at permeable separation layer (e) lays to appointed thickness.
4. the construction technology of blowing-filling sludge and reclaiming land from sea according to claim 3 is characterized in that: described separation layer is the sheet material that adopts bamboo wood or timber or straw braiding, geotextiles and goods thereof, plastics establishment cloth and goods thereof.
5. the construction technology of blowing-filling sludge and reclaiming land from sea according to claim 3, it is characterized in that: the addition of described curing compound is 0～30% of a quality of mud fluid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100830995A CN101560754B (en) | 2009-04-29 | 2009-04-29 | Construction process for blowing-filling sludge and reclaiming land from sea and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100830995A CN101560754B (en) | 2009-04-29 | 2009-04-29 | Construction process for blowing-filling sludge and reclaiming land from sea and device thereof |
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| CN101560754A CN101560754A (en) | 2009-10-21 |
| CN101560754B true CN101560754B (en) | 2011-12-14 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101824820B (en) * | 2010-04-20 | 2011-12-21 | 武汉华荣科技发展有限责任公司 | Construction process for reclamation by hydraulic filling of silt and device thereof |
| CN103850239B (en) * | 2014-04-01 | 2015-08-05 | 兰州理工大学 | The punching of guiding water is cut mountain and is made ground and slurry curing process construction method |
| CN104860502B (en) * | 2015-05-08 | 2017-03-29 | 天津市海顺交通工程设计有限公司 | A kind of hydraulic type soil engineering bag dewatering box |
| CN105174671B (en) * | 2015-10-07 | 2018-04-20 | 常州市金坛区宝能苏源墙材科技有限公司 | It is a kind of to remove the method for debris and its complete impurity removing equipment in the river silt mud of lake |
| CN105821888B (en) * | 2016-03-28 | 2018-08-10 | 北京中岩大地科技股份有限公司 | Connect the earth-filling method and device of bank band |
| CN106192974B (en) * | 2016-08-29 | 2018-06-19 | 天津恒吉生科技有限公司 | A kind of device and method of sludge solidification processing |
| CN109577306B (en) * | 2018-11-28 | 2021-01-26 | 南京吉欧地下空间科技有限公司 | Foundation treatment technology and construction method of EPS foam dredger fill |
| CN109930590B (en) * | 2019-03-06 | 2024-03-19 | 华中科技大学 | Hard shell working platform manufacturing equipment and method suitable for dredging sludge |
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