CN104563091A - Structure and method for processing consolidation of water pumping and air exhausting soft foundation - Google Patents
Structure and method for processing consolidation of water pumping and air exhausting soft foundation Download PDFInfo
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- CN104563091A CN104563091A CN201410815300.5A CN201410815300A CN104563091A CN 104563091 A CN104563091 A CN 104563091A CN 201410815300 A CN201410815300 A CN 201410815300A CN 104563091 A CN104563091 A CN 104563091A
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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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Abstract
The invention discloses a structure and a method for processing consolidation of a water pumping and air exhausting soft foundation. The structure comprises weaving cloth, a sand cushion layer, multiple long vertical water discharging plates, multiple horizontal filter pipe branch pipes, multiple horizontal filter pipe main pipes, non-woven geotextile, a sealing film, water-air separators and a vacuum pump, wherein the weaving cloth and the sand cushion layer are sequentially arranged in a soft foundation processing area, the long vertical water discharging plates are inserted into the soft foundation processing area by penetrating through the sand cushion layer and the weaving cloth, the horizontal filter pipe branch pipes and the horizontal filter pipe main pipes which are arranged in parallel are embedded into the sand cushion layer, the non-woven geotextile and the sealing film are sequentially paved on the sand cushion layer, the water-air separators are arranged by diving the soft foundation processing area into pieces, one water-air separator is arranged in each area, multiple areas are equipped with one vacuum pump, water-air inlets of the water-air separators are connected with the horizontal filter pipe main pipes through connecting pipelines, water outlets of the water-air separators are connected with water discharging pipes, and air pumping openings of the water-air separators are connected with the vacuum pump through air pumping pipes. The structure and the method for processing the consolidation of the water pumping and air exhausting soft foundation, disclosed by the invention, have the advantages that consolidation processing of the water pumping and air exhausting soft foundation is realized by utilizing the vacuum pump and the water-air separators, the cost can be reduced, and the consolidation efficiency can be effectively increased.
Description
Technical field
The present invention relates to a kind of soft foundation processing technology, especially relate to one and to draw water exhaust concretion of soft foundation process structure and method.
Background technology
Soft foundation processing technology is widely used in China's Coastal Areas and interior, and particularly some need the area of reclaiming fields from the sea, first to need to carry out treatment of soft foundation, otherwise can cause very large risk and future trouble to later stage engineering.At present, common method has cement mixing pile method, broken stone pile method, vacuum method, displacement method and dynamic compaction etc., wherein for the soft base Project on Pre of large area, generally adopt the processing mode of vacuum method, this technology not only have accumulated a large amount of field datas and rich experience, and has possessed the construction technology of comparatively perfect vacuum method.The main construction sequence of existing vacuum precompressed soft foundation processing method is: 1) plug vertical drainage plate as vertical drainage passage; 2) lay sand cushion and arrange that Horizontal filter pipe is as horizontal drainage passage; 3) dig sealing ditch and lay diaphragm seal to set up sealing system; 4) arrange a jet pump for every 900 ~ 1100 square metres, it is connected with vertical levels chimney filter; 5) open jet pump and carry out construction operation.But this kind of vacuum precompressed soft foundation processing method has the following disadvantages: the first, and the efficiency of jet pump is lower, only have effect of 30% to provide negative pressure field for vacuum preloading in its operation, therefore power consumption is serious, wasting manpower and material resources; The second, arrange a jet pump for every 900 ~ 1100 square metres, the equipment cost of construction operation is high; 3rd, a large amount of jet pump need be arranged in pending region, and jet pump and respective cable line distribution dispersion, be difficult to unified control and management.
Summary of the invention
Technical problem to be solved by this invention is to provide one and draws water exhaust concretion of soft foundation process structure and method, and its treatment effeciency is high, treatment effect good, and cost is low.
The present invention solves the problems of the technologies described above adopted technical scheme: one is drawn water and is vented concretion of soft foundation process structure, it is characterized in that comprising the woven cloth on the upper soll layer being layed in treatment of soft foundation region, be layed in the sand cushion in described woven cloth, many long vertical drainage plates in treatment of soft foundation region are inserted through described sand cushion and described woven cloth, be embedded in the Horizontal filter pipe arm of many parallel arrangements in described sand cushion and the Horizontal filter pipe house steward of Duo Gen parallel arrangement, be layed in the non-woven geotextile on described sand cushion, to be layed on described non-woven geotextile and to cover the diaphragm seal in treatment of soft foundation region for disposable sealing completely, several moisture separators and several vacuum pumps, the top of described long vertical drainage plate is arranged in described sand cushion, described Horizontal filter pipe arm is connected with described Horizontal filter pipe house steward is vertical, moisture separator described in block layout is drawn to treatment of soft foundation region, the moisture separator described in one is arranged in every block region, the substructure of described moisture separator is embedded in treatment of soft foundation region, polylith region is equipped with the vacuum pump described in, the aqueous vapor inlet port of described moisture separator is connected with the Horizontal filter pipe house steward described in the every root in described moisture separator region respectively by connecting pipe, the outfall of described moisture separator is connected with gutter, vacuum pump described in the extract opening of described moisture separator to be equipped with the region for described moisture separator place by exhaust tube is connected.
The thickness of described sand cushion is 40 ~ 50cm; Due to Horizontal filter pipe arm and Horizontal filter pipe house steward need be laid in sand cushion, simultaneously for ensureing that the water that long vertical drainage plate and short vertical drainage plate are discharged can all infiltrate in Horizontal filter pipe arm, therefore require that sand cushion has enough thickness, by great many of experiments, the basis of this exhaust concretion of soft foundation process structure of drawing water shows that the thickness of sand cushion is the effect that 40 ~ 50cm can reach best.
In treatment of soft foundation region, many short vertical drainage plates are also inserted with through described sand cushion and described woven cloth, the top of described short vertical drainage plate is arranged in described sand cushion, and the short vertical drainage plate described in is positioned at the middle of the long vertical drainage plate described in four forming rectangle; Plug a short vertical drainage plate in the middle of four long vertical drainage plates again, can effectively improve drainage efficiency and drainage effect.
The top of described long vertical drainage plate and described short vertical drainage plate exceedes described woven cloth 20 ~ 30cm; The length of described long vertical drainage plate is determined by geological condition, and the length of described short vertical drainage plate is the half of the length of described long vertical drainage plate; Spacing between long vertical drainage plate described in adjacent two is 1.4 ~ 2.6m; At this, limit the spacing between the position of top in sand cushion of long vertical drainage plate and short vertical drainage plate, the length of the length of long vertical drainage plate and short vertical drainage plate and adjacent two long vertical drainage plates, object is in order to can draining effectively, finally makes consolidation effect reach best.
The degree of depth that described Horizontal filter pipe arm and described Horizontal filter pipe house steward imbed in described sand cushion is 15 ~ 20cm; Spacing between Horizontal filter pipe arm described in adjacent two is 6 ~ 7m; Spacing between Horizontal filter pipe house steward described in adjacent two is 30 ~ 40m; At this, limit Horizontal filter pipe arm and Horizontal filter pipe house steward and imbed spacing between spacing between the degree of depth in sand cushion, adjacent two Horizontal filter pipe arms and adjacent two Horizontal filter pipe house stewards, object is in order to can draining effectively, finally makes consolidation effect reach best.
The area in the region of the moisture separator process described in is 3 ~ 40,000 square metres, and three regions are equipped with the vacuum pump described at the most; At this, only need a moisture separator just can realize to the area region that is 3 ~ 40,000 square metres pump-down process of drawing water, and effective processing area of a vacuum pump can reach 9 ~ 120,000 square metres, under the prerequisite that ensure that consolidation effect, greatly reduce energy consumption, reduce electric cost, reduce the equipment cost of construction operation simultaneously; In addition because vacuum pump usage quantity is few, therefore centralized arrangement is convenient to, intelligentized control method, so not only simple to operate, and be beneficial to unified management, maintenance, can human cost be saved.
Described connecting pipe is provided with the first stop valve during later period maintenance, the first stop valve convenient for maintaining is set and changes, can pressure stability be ensured.
Described gutter is provided with the second stop valve, the second stop valve convenient for maintaining is set and changes, can pressure stability be ensured; Described exhaust tube is provided with flap valve.
One is drawn water and is vented concretion of soft foundation processing method, it is characterized in that comprising the following steps:
1. flatten treatment of soft foundation region, then on the upper soll layer in treatment of soft foundation region, lay woven cloth, then lay sand cushion in woven cloth;
2. in treatment of soft foundation region, plug many long vertical drainage plates through sand cushion and woven cloth, and make the top of long vertical drainage plate be arranged in sand cushion;
3. block is drawn to treatment of soft foundation region and arrange moisture separator, the middle position in the region of every block 3 ~ 40,000 square metres buries the substructure of a moisture separator underground, and making the top of the substructure of moisture separator and the upper surface flush of sand cushion, three pieces of regions are equipped with a vacuum pump;
4. in sand cushion, bury the Horizontal filter pipe arm of many parallel arrangements and the Horizontal filter pipe house steward of Duo Gen parallel arrangement underground, and make Horizontal filter pipe arm vertical with Horizontal filter pipe house steward; Then the connection of Horizontal filter pipe arm and Horizontal filter pipe house steward is completed;
5. on sand cushion, lay non-woven geotextile and diaphragm seal successively, and make the disposable sealing completely of diaphragm seal cover treatment of soft foundation region, make treatment of soft foundation region completely closed;
6. in the substructure of moisture separator, connected the superstructure of moisture separator by flange, and encapsulation process is carried out to the film outlet port of reserved moisture separator; Then on diaphragm seal, arrange the connecting pipe of the aqueous vapor inlet port for connecting Horizontal filter pipe house steward and moisture separator; Complete Horizontal filter pipe house steward, connecting pipe and moisture separator aqueous vapor inlet port connection after, encapsulation process is carried out to the film outlet port of the junction of reserved Horizontal filter pipe house steward and connecting pipe;
7. in the outfall of moisture separator, connect a gutter, the exhaust tube that the extract opening of moisture separator is provided with flap valve by is connected with the vacuum pump that the region for this moisture separator place is equipped with;
8. open vacuum pump, drawn water pump-down process in treatment of soft foundation region, realize the consolidation in treatment of soft foundation region.
Described step 8. in unlatching vacuum pump after, require sealing under-membrance vacuum degree be more than or equal to 80kPa, continue to vacuumize 75 ~ 100 days, realize the consolidation in treatment of soft foundation region.
Described step 1. in the thickness of sand cushion be 40 ~ 50cm; Described step 2. in treatment of soft foundation region, also plug many short vertical drainage plates through sand cushion and woven cloth, and make a short vertical drainage plate be positioned at the middle of the four long vertical drainage plates forming rectangle; The top of long vertical drainage plate and short vertical drainage plate exceedes woven cloth 20 ~ 30cm and is arranged in sand cushion, and the length of long vertical drainage plate is determined by geological condition, and the length of short vertical drainage plate is the half of the length of long vertical drainage plate; Spacing between adjacent two long vertical drainage plates is 1.4 ~ 2.6m; The described step degree of depth that 4. middle Horizontal filter pipe arm and Horizontal filter pipe house steward imbed in sand cushion is 15 ~ 20cm, and the spacing between adjacent two Horizontal filter pipe arms is 6 ~ 7m, and the spacing between adjacent two Horizontal filter pipe house stewards is 30 ~ 40m; Described step 6. in the first stop valve when connecting pipe being provided with later period maintenance; Described step 7. in gutter is provided with the second stop valve.
Compared with prior art, the invention has the advantages that:
1) utilize vacuum pump to impel in moisture separator and form negative pressure, guarantee that the water and air in soft base concentrates in moisture separator, wherein water is extracted out by the drainage pump in moisture separator, air then detaches moisture separator by vacuum pump, realized the solidification process of soft base by Separation of Water and air, electric energy more than 50% can not only be saved, reduce costs, and can effectively improve the efficiency vacuumized, thus improve curing efficiency.
2) compared with conventional vacuum preloading, the processing time is short 15 ~ 20 days, and treatment effect is better.
Accompanying drawing explanation
Fig. 1 is the structure section schematic diagram that exhaust concretion of soft foundation process structure of drawing water of the present invention is applied to treatment of soft foundation region;
Fig. 2 is the part-structure schematic top plan view of exhaust concretion of soft foundation process structure of drawing water of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing embodiment, the present invention is described in further detail.
Embodiment one:
The one that the present embodiment proposes is drawn water and is vented concretion of soft foundation process structure, as shown in the figure, it comprises the woven cloth 1 on the upper soll layer being layed in treatment of soft foundation region, be layed in the sand cushion 2 in woven cloth 1, the many long vertical drainage plates 31 inserted in treatment of soft foundation region through sand cushion 2 and woven cloth 1 and the short vertical drainage plate 32 of Duo Gen, be embedded in the Horizontal filter pipe arm 41 of many parallel arrangements in sand cushion 2 and the Horizontal filter pipe house steward 42 of Duo Gen parallel arrangement, be layed in the non-woven geotextile 5 on sand cushion 2, to be layed on non-woven geotextile 5 and to cover the diaphragm seal 6 in treatment of soft foundation region for disposable sealing completely, several moisture separators 7 and several vacuum pumps 8, the top of long vertical drainage plate 31 and short vertical drainage plate 32 is arranged in sand cushion 2, a short vertical drainage plate 32 is positioned at the middle of the four long vertical drainage plates 31 forming rectangle, Horizontal filter pipe arm 41 is connected with Horizontal filter pipe house steward 42 is vertical, block is drawn to treatment of soft foundation region and arranges moisture separator 7, a moisture separator 7 is arranged in every block region, the substructure of moisture separator 7 to be embedded in treatment of soft foundation region and the upper surface flush of the top of the substructure of moisture separator 7 and sand cushion 2, polylith region is equipped with a vacuum pump 8, the aqueous vapor inlet port of moisture separator 7 is connected with the every root Horizontal filter pipe house steward 42 in moisture separator 7 region respectively by connecting pipe 9, connecting pipe 9 is provided with the first stop valve 91 during later period maintenance, the outfall of moisture separator 7 is connected with gutter 71, gutter 71 is provided with the second stop valve (not shown), the vacuum pump 8 that the extract opening of moisture separator 7 is equipped with by exhaust tube 73 and the region for moisture separator 7 place is connected, exhaust tube 73 is provided with flap valve 74.
In the present embodiment, the thickness of sand cushion 2 is 40 ~ 50cm, the top of long vertical drainage plate 31 and short vertical drainage plate 32 exceedes woven cloth 1 about 20 ~ 30cm, the length of long vertical drainage plate 31 is determined by geological condition, the length of short vertical drainage plate 32 is the half of the length of long vertical drainage plate 31, spacing between adjacent two long vertical drainage plates 31 is 1.4 ~ 2.6m, the degree of depth that Horizontal filter pipe arm 41 and Horizontal filter pipe house steward 42 imbed in sand cushion 2 is 15 ~ 20cm, spacing between adjacent two Horizontal filter pipe arms 41 is 6 ~ 7m, spacing between adjacent two Horizontal filter pipe house stewards 42 is 30 ~ 40m, the area in the region of moisture separator 7 process is 3 ~ 40,000 square metres, and three regions are equipped with a vacuum pump 8.
At this, moisture separator 7 adopts prior art, and vacuum pump 8 can adopt existing belt-type water ring vacuum pump.
Embodiment two:
The one that the present embodiment proposes is drawn water and is vented concretion of soft foundation processing method, and it comprises the following steps:
1. treatment of soft foundation region is flattened, then on the upper soll layer in treatment of soft foundation region, manually woven cloth is laid, lay smooth, elasticity is even, and end anchors firmly, the sand cushion that a layer thickness is 40 ~ 50cm is laid again, the sand cushion that during concrete laying, a layer thickness is 45cm as laid in woven cloth.
2. after position of p ile machine and draining sheet pile position registration, in treatment of soft foundation region, many long vertical drainage plates and the short vertical drainage plate of Duo Gen is plugged through sand cushion and woven cloth, and make the top of long vertical drainage plate and short vertical drainage plate exceed woven cloth 20 ~ 30cm to be arranged in sand cushion, make a short vertical drainage plate be positioned at the middle of the four long vertical drainage plates forming rectangle simultaneously.
At this, the length of long vertical drainage plate is determined by geological condition, the length of short vertical drainage plate can be the half of the length of long vertical drainage plate, spacing between adjacent two long vertical drainage plates can be designed to 1.4 ~ 2.6m, namely the spacing between long vertical drainage plate and short vertical drainage plate can be designed to 0.7 ~ 1.3m, as being 2m by the line space design between adjacent two long vertical drainage plates.
Width can be adopted during Specific construction to be the long vertical drainage plate of 8 ~ 12cm and short vertical drainage plate, and the insertion depth of long vertical drainage plate can be 12 ~ 20m, and the insertion depth of short vertical drainage plate can be 8 ~ 12m.
3. according to the area in treatment of soft foundation region, the number determining the moisture separator that need arrange and the number of vacuum pump that need be equipped with, block is drawn to treatment of soft foundation region and arranges moisture separator, the middle position in the region of every block 3 ~ 40,000 square metres buries the substructure of a moisture separator underground, and making the top of the substructure of moisture separator and the upper surface flush of sand cushion, three pieces of regions are equipped with a vacuum pump.
When Specific construction, be the substructure avoiding the soil body to fall into moisture separator, block at the top cover plate of the substructure of moisture separator.
4. in sand cushion, bury the Horizontal filter pipe arm of many parallel arrangements and the Horizontal filter pipe house steward of Duo Gen parallel arrangement underground, and make Horizontal filter pipe arm vertical with Horizontal filter pipe house steward; Then the connection of Horizontal filter pipe arm and Horizontal filter pipe house steward is completed.
At this, the degree of depth that Horizontal filter pipe arm and Horizontal filter pipe house steward imbed in sand cushion can be set to 15 ~ 20cm, as the degree of depth that Horizontal filter pipe arm and Horizontal filter pipe house steward are imbedded in sand cushion being set to 18cm during Specific construction; Spacing between adjacent two Horizontal filter pipe arms can be designed to 6 ~ 7m, as being set to 6.5m during Specific construction; Spacing between adjacent two Horizontal filter pipe house stewards can be designed to 30 ~ 40m, as being set to 35m during Specific construction.
When Specific construction, Horizontal filter pipe arm can adopt diameter to be the bellows of 40 ~ 60mm, Horizontal filter pipe house steward can adopt diameter to be the bellows of 60 ~ 80mm, along pipe shaft by rounded projections arranged punching, make floral tube, bag layer of non-woven fabric is as drainage layer again, and requirement is tied up solid, reaches only permeable saturating sand.
5. on sand cushion, lay non-woven geotextile and 1 ~ 3 layer of 16 diaphragm seal thickened of 250 grams/m successively, and make the disposable sealing completely of diaphragm seal cover treatment of soft foundation region, make treatment of soft foundation region completely closed.
At this, the joint gap of non-woven geotextile must not be less than 20cm, and non-woven geotextile can adopt chopped fiber needle-punched geotextiles, and non-woven geotextile, Horizontal filter pipe arm, Horizontal filter pipe house steward and sand cushion form horizontal drainage passage; Firmly, two heat seal meets flat lap side seam width to be less than 20cm to diaphragm seal seam bonding, and on-the-spot diaphragm seal of laying divides two-layer carrying out, and from starting during laying, layering is from the close-by examples to those far off laid successively.
6. in the substructure of moisture separator, connected the superstructure of moisture separator by flange, and encapsulation process is carried out to the film outlet port of reserved moisture separator; Then on diaphragm seal, arrange the connecting pipe of the aqueous vapor inlet port for connecting Horizontal filter pipe house steward and moisture separator; Complete Horizontal filter pipe house steward, connecting pipe and moisture separator aqueous vapor inlet port connection after, encapsulation process is carried out to the film outlet port of the junction of reserved Horizontal filter pipe house steward and connecting pipe.At this, connecting pipe arranges the first stop valve during later period maintenance.
When specifically setting up connecting pipe, should ensure that it is connected firmly, and guarantee that the junction of Horizontal filter pipe house steward and connecting pipe seals; At this, film outlet port can adopt special membrane device to realize, to guarantee the sealing at membrane position.
7. in the outfall of moisture separator, connect a gutter, the exhaust tube that the extract opening of moisture separator is provided with flap valve by is connected with the vacuum pump that the region for this moisture separator place is equipped with.At this, gutter arranges the second stop valve.
When Specific construction, the water that gutter is discharged directly can be discharged to as required on diaphragm seal and carries out covering water, or is guided to outside treatment of soft foundation region by aqueduct and emit.
8. open vacuum pump, drawn water pump-down process in treatment of soft foundation region, realize the consolidation in treatment of soft foundation region.
At this, vacuum pump can adopt the water ring vacuum pump of existing belt-type, and found through experiments the belt-type water ring vacuum pump of the 55kW of employing 2 series connection, its effective processing area can reach 180000 square metres.
Vacuum pump and moisture separator can control by existing intelligent control system is unified, automatically can adjust the operate power of vacuum pump according to sealing under-membrance vacuum degree.Start vacuum pump, first carry out examination and take out, check running status, sealing situation; In vacuum draw running, vacuum under necessary continual observation diaphragm seal, require vacuum >=80 kPa under diaphragm seal, draw vacuum duration is 75 ~ 100 days, if the vacuum degree deficiency under diaphragm seal, then should check the sealing situation of diaphragm seal and moisture separator pipeline, operating condition that diaphragm seal breaks gas leakage situation and vacuum pump, find reason, adopt remedial measures, according to measured settlement hyperbola of fit, prediction final settlement, reaches 80% in conjunction with the degree of consolidation and judges when stop vacuumizing.
Claims (10)
1. an exhaust concretion of soft foundation process structure of drawing water, it is characterized in that comprising the woven cloth on the upper soll layer being layed in treatment of soft foundation region, be layed in the sand cushion in described woven cloth, many long vertical drainage plates in treatment of soft foundation region are inserted through described sand cushion and described woven cloth, be embedded in the Horizontal filter pipe arm of many parallel arrangements in described sand cushion and the Horizontal filter pipe house steward of Duo Gen parallel arrangement, be layed in the non-woven geotextile on described sand cushion, to be layed on described non-woven geotextile and to cover the diaphragm seal in treatment of soft foundation region for disposable sealing completely, several moisture separators and several vacuum pumps, the top of described long vertical drainage plate is arranged in described sand cushion, described Horizontal filter pipe arm is connected with described Horizontal filter pipe house steward is vertical, moisture separator described in block layout is drawn to treatment of soft foundation region, the moisture separator described in one is arranged in every block region, the substructure of described moisture separator is embedded in treatment of soft foundation region, polylith region is equipped with the vacuum pump described in, the aqueous vapor inlet port of described moisture separator is connected with the Horizontal filter pipe house steward described in the every root in described moisture separator region respectively by connecting pipe, the outfall of described moisture separator is connected with gutter, vacuum pump described in the extract opening of described moisture separator to be equipped with the region for described moisture separator place by exhaust tube is connected.
2. one according to claim 1 is drawn water and is vented concretion of soft foundation process structure, it is characterized in that the thickness of described sand cushion is 40 ~ 50cm.
3. one according to claim 1 and 2 is drawn water and is vented concretion of soft foundation process structure, it is characterized in that in treatment of soft foundation region, being also inserted with many short vertical drainage plates through described sand cushion and described woven cloth, the top of described short vertical drainage plate is arranged in described sand cushion, and the short vertical drainage plate described in is positioned at the middle of the long vertical drainage plate described in four forming rectangle.
4. one according to claim 3 is drawn water and is vented concretion of soft foundation process structure, it is characterized in that the top of described long vertical drainage plate and described short vertical drainage plate exceedes described woven cloth 20 ~ 30cm; The length of described long vertical drainage plate is determined by geological condition, and the length of described short vertical drainage plate is the half of the length of described long vertical drainage plate; Spacing between long vertical drainage plate described in adjacent two is 1.4 ~ 2.6m; The degree of depth that described Horizontal filter pipe arm and described Horizontal filter pipe house steward imbed in described sand cushion is 15 ~ 20cm; Spacing between Horizontal filter pipe arm described in adjacent two is 6 ~ 7m; Spacing between Horizontal filter pipe house steward described in adjacent two is 30 ~ 40m.
5. one according to claim 4 is drawn water exhaust concretion of soft foundation process structure, it is characterized in that the area in the region of the moisture separator process described in is 3 ~ 40,000 square metres, and three regions are equipped with the vacuum pump described at the most.
6. one according to claim 5 is drawn water and is vented concretion of soft foundation process structure, it is characterized in that the first stop valve when described connecting pipe being provided with later period maintenance.
7. one according to claim 6 is drawn water and is vented concretion of soft foundation process structure, it is characterized in that described gutter is provided with the second stop valve; Described exhaust tube is provided with flap valve.
8. draw water and be vented a concretion of soft foundation processing method, it is characterized in that comprising the following steps:
1. flatten treatment of soft foundation region, then on the upper soll layer in treatment of soft foundation region, lay woven cloth, then lay sand cushion in woven cloth;
2. in treatment of soft foundation region, plug many long vertical drainage plates through sand cushion and woven cloth, and make the top of long vertical drainage plate be arranged in sand cushion;
3. block is drawn to treatment of soft foundation region and arrange moisture separator, the middle position in the region of every block 3 ~ 40,000 square metres buries the substructure of a moisture separator underground, and making the top of the substructure of moisture separator and the upper surface flush of sand cushion, three pieces of regions are equipped with a vacuum pump;
4. in sand cushion, bury the Horizontal filter pipe arm of many parallel arrangements and the Horizontal filter pipe house steward of Duo Gen parallel arrangement underground, and make Horizontal filter pipe arm vertical with Horizontal filter pipe house steward; Then the connection of Horizontal filter pipe arm and Horizontal filter pipe house steward is completed;
5. on sand cushion, lay non-woven geotextile and diaphragm seal successively, and make the disposable sealing completely of diaphragm seal cover treatment of soft foundation region, make treatment of soft foundation region completely closed;
6. in the substructure of moisture separator, connected the superstructure of moisture separator by flange, and encapsulation process is carried out to the film outlet port of reserved moisture separator; Then on diaphragm seal, arrange the connecting pipe of the aqueous vapor inlet port for connecting Horizontal filter pipe house steward and moisture separator; Complete Horizontal filter pipe house steward, connecting pipe and moisture separator aqueous vapor inlet port connection after, encapsulation process is carried out to the film outlet port of the junction of reserved Horizontal filter pipe house steward and connecting pipe;
7. in the outfall of moisture separator, connect a gutter, the exhaust tube that the extract opening of moisture separator is provided with flap valve by is connected with the vacuum pump that the region for this moisture separator place is equipped with;
8. open vacuum pump, drawn water pump-down process in treatment of soft foundation region, realize the consolidation in treatment of soft foundation region.
9. one according to claim 8 is drawn water and is vented concretion of soft foundation processing method, to it is characterized in that during described step 8. after unlatching vacuum pump, require that sealing under-membrance vacuum degree is more than or equal to 80kPa, continue to vacuumize 75 ~ 100 days, realize the consolidation in treatment of soft foundation region.
10. one is according to claim 8 or claim 9 drawn water exhaust concretion of soft foundation processing method, it is characterized in that during described step 1., the thickness of sand cushion is 40 ~ 50cm; Described step 2. in treatment of soft foundation region, also plug many short vertical drainage plates through sand cushion and woven cloth, and make a short vertical drainage plate be positioned at the middle of the four long vertical drainage plates forming rectangle; The top of long vertical drainage plate and short vertical drainage plate exceedes woven cloth 20 ~ 30cm and is arranged in sand cushion, and the length of long vertical drainage plate is determined by geological condition, and the length of short vertical drainage plate is the half of the length of long vertical drainage plate; Spacing between adjacent two long vertical drainage plates is 1.4 ~ 2.6m; The described step degree of depth that 4. middle Horizontal filter pipe arm and Horizontal filter pipe house steward imbed in sand cushion is 15 ~ 20cm, and the spacing between adjacent two Horizontal filter pipe arms is 6 ~ 7m, and the spacing between adjacent two Horizontal filter pipe house stewards is 30 ~ 40m; Described step 6. in the first stop valve when connecting pipe being provided with later period maintenance; Described step 7. in gutter is provided with the second stop valve.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107237311A (en) * | 2017-06-15 | 2017-10-10 | 中交航局第工程有限公司 | The method of concretion of soft foundation processing structure |
| CN108330945A (en) * | 2018-03-29 | 2018-07-27 | 中国建筑第二工程局有限公司 | Vacuum precompressed soft foundation processing membrane device goes out membranous system and its construction method |
| CN109235495A (en) * | 2018-10-23 | 2019-01-18 | 中石化石油工程技术服务有限公司 | The preparation method of buried pipeline leakage protection structure and buried pipeline leakage protection structure |
| CN113235562A (en) * | 2021-05-28 | 2021-08-10 | 中交投资咨询(北京)有限公司 | Soft foundation treatment drainage plate |
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| CN107237311A (en) * | 2017-06-15 | 2017-10-10 | 中交航局第工程有限公司 | The method of concretion of soft foundation processing structure |
| CN108330945A (en) * | 2018-03-29 | 2018-07-27 | 中国建筑第二工程局有限公司 | Vacuum precompressed soft foundation processing membrane device goes out membranous system and its construction method |
| CN109235495A (en) * | 2018-10-23 | 2019-01-18 | 中石化石油工程技术服务有限公司 | The preparation method of buried pipeline leakage protection structure and buried pipeline leakage protection structure |
| CN113235562A (en) * | 2021-05-28 | 2021-08-10 | 中交投资咨询(北京)有限公司 | Soft foundation treatment drainage plate |
| CN113235562B (en) * | 2021-05-28 | 2022-06-10 | 中交投资咨询(北京)有限公司 | Soft foundation treatment drainage plate |
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