CN106049518B - A kind of improved vacuum precipitation system and its control method - Google Patents
A kind of improved vacuum precipitation system and its control method Download PDFInfo
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- CN106049518B CN106049518B CN201610535190.6A CN201610535190A CN106049518B CN 106049518 B CN106049518 B CN 106049518B CN 201610535190 A CN201610535190 A CN 201610535190A CN 106049518 B CN106049518 B CN 106049518B
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- water
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- pipe
- gas injection
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/06—Restraining of underground water
- E02D19/10—Restraining of underground water by lowering level of ground water
-
- 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
- E02D3/046—Improving by compacting by tamping or vibrating, e.g. with auxiliary watering of the soil
-
- 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
Abstract
The invention discloses a kind of improved vacuum precipitation system, including some first sleeves and the second sleeve pipe, first sleeve and the second sleeve pipe are plugged in ground, the inserting depth of first sleeve is 3m~7m, the inserting depth of second sleeve pipe is 10m~15m, and the side wall of first sleeve and the second sleeve pipe is provided with several through holes；Some set vacuum-dewatering pumps, each vacuum-dewatering pump is connected with the drinking-water pipe with first sleeve or the second casing selection grafting；Some set gas injection pumps, each gas injection pump is connected with the air injection pipe with first sleeve or the second casing selection grafting；A set of dispenser pump, dispenser pump is connected with the filler pipe with first sleeve or the second casing selection grafting.The present invention can improve the deficiencies in the prior art, reduce construction cost.
Description
Technical field
The present invention relates to foundation treatment technology field, especially a kind of improved vacuum precipitation system and its control method.
Background technology
In recent years, riverine, coastal major urban economies and infrastructure flourish, and have further urban development
Plan, the construction scale of projects such as harbour, airport, road expands day by day, and land-based area land used can not increasingly meet needs, will dredge out
The mud come is used for sea reclamation or constructs the land-based area of bunder, and this has become the important means of land development.But beach
The sand or mud of upper hydraulic reclamation, water content is high, soil property is poor, if without processing, general is difficult to meet engineering construction to ground
It is required that.Chinese invention patent application CN 101215833A disclose a kind of gas injection type vacuum precipitation method, and drainage effect is obvious.
But, this method equipment investment amount is big, and construction cost is higher.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of improved vacuum precipitation system and its control method, it can solve
Certainly the deficiencies in the prior art, reduce construction cost.
In order to solve the above technical problems, the technical solution used in the present invention is as follows.
A kind of improved vacuum precipitation system, including,
Some first sleeves and the second sleeve pipe, first sleeve and the second sleeve pipe are plugged in ground, the grafting of first sleeve
Depth is 3m~7m, and the inserting depth of the second sleeve pipe is 10m~15m, and the side wall of first sleeve and the second sleeve pipe is provided with some
Individual through hole；
Some set vacuum-dewatering pumps, each vacuum-dewatering pump is connected with and first sleeve or the second casing selection grafting
Drinking-water pipe；
Some set gas injection pumps, each gas injection pump is connected with the air injection pipe with first sleeve or the second casing selection grafting；
A set of dispenser pump, dispenser pump is connected with the filler pipe with first sleeve or the second casing selection grafting.
A kind of control method of above-mentioned improved vacuum precipitation system, comprises the following steps：
A, drinking-water pipe inserts to first sleeve, insertion depth is less than 2m, and air injection pipe is inserted into the second sleeve pipe, inserts second set
The bottom of pipe；Gas injection pump is first turned on to ground basal part gas injection, gas injection pressure is higher 0.2~0.3 times than the hydraulic pressure in ground, works as water
After the increasing degree for extruding existing at least 10%, open vacuum-dewatering pump and drawn water, when water yield drop to the 50% of initial water yield with
After lower, stop gas injection and draw water；
B, the insertion depth for increasing drinking-water pipe, insertion depth increase 1m, reduce the insertion depth of air injection pipe, insertion depth subtracts
Small 2m~3m, starts gas injection and to draw water simultaneously, after water yield drops to less than the 50% of initial water yield, stop gas injection with
Draw water；
C, drinking-water pipe transferred to the bottom of first sleeve, reduce the insertion depth of air injection pipe, the insertion depth of air injection pipe
Control is in 2m~2.5m；Gas injection pump is first opened to ground basal part gas injection, gas injection pressure is higher 0.5~0.7 times than the hydraulic pressure in ground,
After at least 10% increasing degree occurs in hydraulic pressure, open vacuum-dewatering pump and drawn water, when water yield drops to initial water yield
After less than 50%, stop gas injection and draw water；
D, the bottom that filler pipe is inserted to the second sleeve pipe, inject water discharge agent, the injection rate of water discharge agent is row by dispenser pump
Go out the 3%~5% of water inventory；
E, by drinking-water pipe insert the second sleeve pipe, grafting gradually downward from top to bottom, while being drawn water；
F, the bottom that filler pipe is inserted to first sleeve, inject coagulating agent, the injection rate of coagulating agent is row by dispenser pump
Go out the 0.7%~1% of water inventory.
Preferably, when carrying out pumping operation, compacting is synchronized to the surface of ground.
Preferably, being carried out to foundation surface in compacting processing procedure, ground often declines 5cm, and gold is laid in foundation surface
Belong to net, and filled and led up using rammed earth, when draw water end after, ground is tamped, then use reinforcing pile is to ground progress
Piling reinforce, piling it is deep-controlled in 1.5m~2m.
Preferably, the water discharge agent includes the component of following parts by weight,
25~30 parts of polyacrylamide, 15~25 parts of Dodecyl Polyoxyethylene Ether sodium sulphate, 5~7 parts of bicarbonate
Sodium, 2~3 parts of triethanolamine, 10~13 parts of 4- fluorophenyls acetate, 5~10 parts of 2,4- methyl dihydroxy benzoates, 4
~7 parts of 2- hydroxy-isobutyrics acid amides, 70~100 parts of glycerine.
Preferably, the coagulating agent includes the component of following parts by weight,
15~25 parts of gypsum, 4~5 parts of tetren, 5~10 parts of chloride, 2~
3 parts of 1,3,5- trimethoxy-benzenes, 10~20 parts of benzyq carbamate, 7~10 parts of the bromopropionitriles of 2,3- bis-, 5~7 parts of benzene
Can butyric acid acetic acid esters, 20~25 parts of 2,5- difluorobenzophenones, 100~120 parts of water.
The beneficial effect brought using above-mentioned technical proposal is：The present invention changes existing gas injection type vacuum precipitation system
The structurally and operationally mode of system, solves gas injection in the prior art and lifts unconspicuous defect for drainage efficiency, further carry
The ground firmness after draining is risen.The rate of consolidation of reinforcing flexible foundation of the present invention is fast, during combined heap load precompacting, makes the closely knit of the soil body
Du Genggao.Foundation instability will not be caused during loading, without controlling rate of loading.Solve soil body permeability difference in silty sand
Problem, it is ensured that excess pore water pressure caused by subsequently ramming can dissipate in time.Efficiency of construction is improved, it is adaptable to big rule
Mould reinforcing soft foundation.The natural foundation bearing capacity of soil response is significantly improved after processing, and can effectively eliminate negative friction and
Sand liquefaction.Not only vertical and lateral contraction, lateral extrusion is not had also during reinforcing flexible foundation.Short time limit, equipment is used
Amount is few, and cost is low.
Brief description of the drawings
Fig. 1 is the structure chart of an embodiment of the invention.
In figure：1st, first sleeve；2nd, the second sleeve pipe；3rd, through hole；4th, vacuum-dewatering pump；5th, drinking-water pipe；6th, gas injection pump；7th, add
Note pump；8th, filler pipe；9th, air injection pipe.
Embodiment
The standardized element used in the present invention can commercially, and shaped piece is according to specification and accompanying drawing
Record can carry out customized, and the specific connected mode of each part is using bolt ripe in the prior art, rivet, weldering
The conventional meanses such as connect, paste, will not be described in detail herein.
Reference picture 1, one embodiment of the present invention includes some sleeve pipes 2 of first sleeve 1 and second, first sleeve 1
It is plugged on the second sleeve pipe 2 in ground, the inserting depth of first sleeve 1 is 5m, and the inserting depth of the second sleeve pipe 2 is 12m, first
The side wall of the sleeve pipe 2 of sleeve pipe 1 and second is provided with several through holes 3；
A kind of control method of above-mentioned improved vacuum precipitation system, comprises the following steps：
A, drinking-water pipe 5 is inserted to first sleeve 1, insertion depth is 1.5m, air injection pipe 9 is inserted into the second sleeve pipe 2, insertion the
The bottom of two sleeve pipes 2；Gas injection pump 6 is first turned on to ground basal part gas injection, gas injection pressure is higher 0.3 times than the hydraulic pressure in ground, when
Hydraulic pressure occurs after at least 10% increasing degree, opens vacuum-dewatering pump 4 and is drawn water, when water yield drops to the 50% of initial water yield
After below, stop gas injection and draw water；
B, the insertion depth for increasing drinking-water pipe 5, insertion depth increase 1m, reduce the insertion depth of air injection pipe 9, insertion depth
Reduce 3m, start gas injection simultaneously and draw water, after water yield drops to less than the 50% of initial water yield, stop gas injection and take out
Water；
C, drinking-water pipe 5 transferred to the bottom of first sleeve 1, reduce the insertion depth of air injection pipe 9, the insertion of air injection pipe 9
It is deep-controlled in 2.5m；Gas injection pump 6 is first opened to ground basal part gas injection, gas injection pressure is higher 0.6 times than the hydraulic pressure in ground, works as water
After the increasing degree for extruding existing at least 10%, open vacuum-dewatering pump 4 and drawn water, when water yield drop to the 50% of initial water yield with
After lower, stop gas injection and draw water；
D, the bottom that filler pipe 8 is inserted to the second sleeve pipe 2, water discharge agent is injected by dispenser pump 7, and the injection rate of water discharge agent is
Discharge the 5% of water inventory；
E, drinking-water pipe 5 is inserted to the second sleeve pipe 2, grafting gradually downward from top to bottom, while being drawn water；
F, the bottom that filler pipe 8 is inserted to first sleeve 1, coagulating agent is injected by dispenser pump 7, and the injection rate of coagulating agent is
Discharge the 1% of water inventory.
When carrying out pumping operation, compacting is synchronized to the surface of ground.Compacting processing procedure is carried out to foundation surface
In, ground often declines 5cm, lays wire netting in foundation surface, and is filled and led up using rammed earth, when draw water end after, to ground
Tamped, then using reinforcing pile to ground carry out piling reinforcing, piling it is deep-controlled in 1.7m~1.8m.
The water discharge agent includes the component of following parts by weight,
30 parts of polyacrylamide, 22 parts of Dodecyl Polyoxyethylene Ether sodium sulphate, 6 parts of sodium acid carbonate, 2 parts of three second
Hydramine, 11 parts of 4- fluorophenyls acetate, 7 parts of 2,4- methyl dihydroxy benzoates, 5 parts of 2- hydroxy-isobutyrics acid amides, 100 parts
Glycerine.
The coagulating agent includes the component of following parts by weight,
23 parts of gypsum, 5 parts of tetren, 8 parts of chloride, 3 parts of 1,3,5- tri-
Methoxybenzene, 15 parts of benzyq carbamate, 8 parts of the bromopropionitriles of 2,3- bis-, 6 parts of benzene can butyric acid acetic acid esters, 23 parts of 2,5-
Difluorobenzophenone, 110 parts of water.
Compared to existing gas injection type vacuum precipitation method, it is flat that a vacuum-dewatering pump of the invention can handle 2.5 ten thousand
The ground of rice, the integrated cost reduction about 15% or so that foundation drainage can be handled.
In the description of the invention, it is to be understood that term " longitudinal direction ", " transverse direction ", " on ", " under ", "front", "rear",
The orientation or position relationship of the instruction such as "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " is based on accompanying drawing institutes
The orientation or position relationship shown, is for only for ease of the description present invention, rather than indicate or imply that the device or element of meaning must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.
The general principle and principal character and advantages of the present invention of the present invention has been shown and described above.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the simply explanation described in above-described embodiment and specification is originally
The principle of invention, without departing from the spirit and scope of the present invention, various changes and modifications of the present invention are possible, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (5)
1. a kind of control method of improved vacuum precipitation system, including,
Some first sleeves (1) and the second sleeve pipe (2), first sleeve (1) and the second sleeve pipe (2) are plugged in ground, first set
The inserting depth for managing (1) is 3m~7m, and the inserting depth of the second sleeve pipe (2) is 10m~15m, first sleeve (1) and the second sleeve pipe
(2) side wall is provided with several through holes (3)；
Some set vacuum-dewatering pumps (4), each vacuum-dewatering pump (4) is connected with to be selected with first sleeve (1) or the second sleeve pipe (2)
The drinking-water pipe (5) of property grafting；
Some set gas injection pumps (6), each gas injection pump is connected with the note with first sleeve (1) or the selective grafting of the second sleeve pipe (2)
Tracheae (9)；
A set of dispenser pump (7), dispenser pump (7) is connected with the filler pipe with first sleeve (1) or the selective grafting of the second sleeve pipe (2)
(8)；
It is characterized in that comprising the following steps：
A, by drinking-water pipe (5) insert first sleeve (1), insertion depth be less than 2m, by air injection pipe (9) insert the second sleeve pipe (2), insert
Enter the bottom of the second sleeve pipe (2)；Gas injection pump (6) is first turned on to ground basal part gas injection, gas injection pressure is higher than the hydraulic pressure in ground
0.2~0.3 times, after at least 10% increasing degree occurs in hydraulic pressure, open vacuum-dewatering pump (4) and drawn water, when water yield declines
To less than the 50% of initial water yield, stop gas injection and draw water；
B, increase drinking-water pipe (5) insertion depth, insertion depth increase 1m, reduce the insertion depth of air injection pipe (9), insertion depth
Reduce 2m~3m, start gas injection simultaneously and draw water, after water yield drops to less than the 50% of initial water yield, stop gas injection
With draw water；
C, the bottom by drinking-water pipe (5) decentralization to first sleeve (1), reduce the insertion depth of air injection pipe (9), air injection pipe (9)
Insertion depth is controlled in 2m~2.5m；Gas injection pump (6) is first opened to ground basal part gas injection, gas injection pressure is higher than the hydraulic pressure in ground
0.5~0.7 times, after at least 10% increasing degree occurs in hydraulic pressure, open vacuum-dewatering pump (4) and drawn water, when water yield declines
To less than the 50% of initial water yield, stop gas injection and draw water；
D, the bottom that filler pipe (8) is inserted to the second sleeve pipe (2), pass through dispenser pump (7) and inject water discharge agent, the injection rate of water discharge agent
To discharge the 3%~5% of water inventory；
E, by drinking-water pipe (5) insert the second sleeve pipe (2), grafting gradually downward from top to bottom, while being drawn water；
F, the bottom that filler pipe (8) is inserted to first sleeve (1), pass through dispenser pump (7) and inject coagulating agent, the injection rate of coagulating agent
To discharge the 0.7%~1% of water inventory.
2. the control method of improved vacuum precipitation system according to claim 1, it is characterised in that：Carrying out the behaviour that draws water
When making, compacting is synchronized to the surface of ground.
3. the control method of improved vacuum precipitation system according to claim 2, it is characterised in that：Foundation surface is entered
In row compacting processing procedure, ground often declines 5cm, lays wire netting in foundation surface, and is filled and led up using rammed earth, when drawing water
After end, ground is tamped, then using reinforcing pile to ground carry out piling reinforcing, piling it is deep-controlled 1.5m~
2m。
4. the control method of improved vacuum precipitation system according to claim 1, it is characterised in that：The water discharge agent bag
The component of following parts by weight is included,
25~30 parts of polyacrylamide, 15~25 parts of Dodecyl Polyoxyethylene Ether sodium sulphate, 5~7 parts of sodium acid carbonate, 2
~3 parts of triethanolamine, 10~13 parts of 4- fluorophenyls acetate, 5~10 parts of 2,4- methyl dihydroxy benzoates, 4~7 parts
2- hydroxy-isobutyrics acid amides, 70~100 parts of glycerine.
5. the control method of improved vacuum precipitation system according to claim 1, it is characterised in that：The coagulating agent bag
The component of following parts by weight is included,
15~25 parts of gypsum, 4~5 parts of tetren, 5~10 parts of chloride, 2~3 parts
1,3,5- trimethoxy-benzenes, 10~20 parts of benzyq carbamate, 7~10 parts of the bromopropionitriles of 2,3- bis-, 5~7 parts of benzene can
Butyric acid acetic acid esters, 20~25 parts of 2,5- difluorobenzophenones, 100~120 parts of water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610535190.6A CN106049518B (en) | 2016-07-08 | 2016-07-08 | A kind of improved vacuum precipitation system and its control method |
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| CN106677156B (en) * | 2016-12-27 | 2018-12-11 | 吴慧明 | A method of disturbance treatment being carried out to soft soil foundation using aerosol |
| CN107237311B (en) * | 2017-06-15 | 2019-03-29 | 中交一航局第一工程有限公司 | The method of concretion of soft foundation processing structure |
| CN107313421B (en) * | 2017-08-11 | 2019-12-03 | 建基建设集团有限公司 | A kind of rapidly solidified device of barged-in fill and construction method |
| CN113338317B (en) * | 2021-05-25 | 2023-03-31 | 上海建工集团股份有限公司 | Precipitation well pipe and air pressure circulating type precipitation system |
| CN113463673B (en) * | 2021-05-27 | 2022-09-02 | 中铁十九局集团第三工程有限公司 | High vacuum system combined densification method foundation treatment method and device |
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| JP3645862B2 (en) * | 2002-02-12 | 2005-05-11 | 西松建設株式会社 | Groundwater level lowering method and groundwater level lowering apparatus |
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