CN206581281U - A kind of well-points dewatering device for building engineering construction - Google Patents
A kind of well-points dewatering device for building engineering construction Download PDFInfo
- Publication number
- CN206581281U CN206581281U CN201720303646.6U CN201720303646U CN206581281U CN 206581281 U CN206581281 U CN 206581281U CN 201720303646 U CN201720303646 U CN 201720303646U CN 206581281 U CN206581281 U CN 206581281U
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- China
- Prior art keywords
- downcomer
- wellhole
- house steward
- well
- connector
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model discloses a kind of well-points dewatering device for building engineering construction, including wellhole, downcomer, anti-block sets, filler, connector, the first house steward, the second house steward, suction pump, electric heating air generator.The utility model carries out negative pressure of vacuum precipitation first with suction pump to the soil body, and the diving in soil layer and construction interstitial water are discharged into earth's surface by permeable hole；Recycle electric heating air generator to carry out normal pressure hot blast drainage to the soil body, by the diving in soil layer and construction interstitial water discharge earth's surface, realize soil body siphon drainage consolidation effect.In addition, the utility model is provided with anti-block sets on guard tube, the drainage area in wellhole is added, there is supporting role simultaneously for borehole wall or filtrate, prevented alluvial from blocking permeable hole, be conducive to the discharge of underground water.
Description
Technical field
The utility model belongs to construction engineering technical field, and specially a kind of well-points dewatering for building engineering construction is filled
Put.
Background technology
With the development of modern society, the use function of building is constantly expanded, particularly in big city, newly-built building
Thing is more and more extensive for the utilization of the underground space, and the foundation depth of building is more and more deeper, during foundation pit construction
Well-points dewatering is often used, so-called well-points dewatering is exactly artificial dewatering.Well-points dewatering is typically first using rig in base
Hole surrounding is drilled to a number of wellhole, installs downcomer, recycles pumping equipment to draw water, dug soil is remained drying
Moisture in state, drainage base soil, promote soil solidifying, foundation strength is improved, while slight slope soil body lateral displacement can be reduced
With sedimentation, stable side slope eliminates drift sand, reduces the protuberance of substrate soil, makes to be located at the ground and basic work below natural groundwater
Journey construction is avoided that the influence of underground water there is provided relatively more dry execution conditions, improves construction quality and ensures construction safety.
Well-points dewatering device of the prior art, extremely easily alluvial is blocked the permeable hole of downcomer, causes well point to block
As dried-up well so that precipitation is unsuccessful, it is easy to cause great engineering accident, the foundation pit collapse accident that the country appears in the newspapers repeatly is equal
It is relevant with this.In addition, well-points dewatering device of the prior art is for silt clay, silt and hypotonicity soft clay area
The content of soil body interlayer diving and construction interstitial water can be reduced, it is impossible to which effectively reduction is wrapped in the attached water on weak soil fine grained surface
Point, so there is the problem of dewatering effect is poor.
The content of the invention
In order to solve the deficiencies in the prior art, the utility model provides a kind of well-points dewatering for building engineering construction and filled
Put.
The technical scheme that the utility model is used is：A kind of well-points dewatering device for building engineering construction, including
Wellhole, downcomer, anti-block sets, filler, connector, the first house steward, the second house steward, suction pump, electric heating air generator, its feature
It is：
The wellhole is the cylindrical bore straight down being drilled in foundation ditch surrounding with rig, wellhole spacing, depth symbol
Close geological conditions, precipitation depth and engineering characteristic；
The downcomer is arranged in wellhole center, downcomer and is provided with a longitudinal baffle, and dividing plate separates downcomer in pairs
It is seamless section not have gap on chamber, the tube wall of downcomer epimere, and it is permeable that the tube wall of downcomer hypomere, which is provided with some permeable holes,
Section, downcomer bottom is provided with thimble, and thimble bottom is in pointed closing, and back cover tube cavity connects the two-chamber of downcomer, envelope
Bottom pipe outer wall is provided with elastic card；
It is described it is anti-blocking be set on permeable section of tube wall of downcomer, for supporting the borehole wall or filtrate, preventing alluvial from blocking saturating
Water hole, anti-block sets include upper sleeve pipe, setting of casing, some elastic strips are set between upper sleeve pipe, setting of casing, the length of elastic strip is big
In permeable section of length of downcomer, upper sleeve pipe is set on downcomer and is fixed on permeable section of upper end, and setting of casing exposes downcomer
Lower end, setting of casing is provided with hole clipping, and the hole clipping matches with the elastic card on thimble；
The filler is filled out between wellhole and downcomer, filler be divided into above and below two layers, lower floor be rough sand filtrate, upper strata is viscous
Soil and with soil layer around seal；
The connector is arranged on downcomer upper end, for by the two-chamber of downcomer respectively with the first house steward, the second house steward
Connection is got up, and connector is included the cover plate of downcomer upper end closed, and cover plate is provided with two outlets, two outlets and downcomer
Two-chamber be connected, two outlet on be designed with curved connecting leg；
First house steward connects with one of them curved connecting leg of each downcomer upper end, and the first house steward is provided with two
Individual connector, one of connector is the pump interface that draws water, and another connector is provided with the first valve；
Second house steward connects with another curved connecting leg of each downcomer upper end, and the second house steward is provided with one
Connector, connector connection electric heating air generator；
The suction pump is jetting stream vacuum suction pump, and suction pump is arranged on one of connector of the first house steward；
The electric heating air generator is industrial electroheat air generator, and electric heating air generator is arranged on the connector of the second house steward
On, the second valve is provided between electric heating air generator and connector.
Further, every 20~30 of the wellhole be set to be equipped with one group, every group first house steward, one it is second total
Pipe, suction pump, an electric heating air generator.
Further, a diameter of 100~200mm of the wellhole, the depth of wellhole is 5~10m, and wellhole spacing is 3~5m.
Further, a diameter of 30~60mm of the downcomer, the length of downcomer is 5~10m.
Further, the length of permeable section of the downcomer is 2~3m.
Further, the length of the anti-block sets is 2.5~3.5m.
Further, the rough sand filtrate uses 3~6mm of particle diameter mung bean sand filtering material.
Further, the thickness of filler upper strata clay is more than 1m.
Further, permeable section of the downcomer upper cladding screen pack, screen pack uses heatproof brass wire gauze.
Further, the permeable hole is rhombus, and the diamond hole in adjacent column mutually staggers.
The utility model work progress：1. processing and fabricating downcomer and anti-block sets on request, and solid in permeable section of downcomer
Set anti-block sets；2. the setting position on foundation ditch carries out drilling construction with rig, forms wellhole, wellhole spacing, depth meet
Geological conditions, precipitation depth and engineering characteristic；3. part rough sand filtrate is inserted in wellhole to wellhole bottom, drop is installed in wellhole
Water pipe, makes the anti-block sets bottom on downcomer prop up the rough sand filtrate on wellhole bottom；4. downcomer, the anti-blocking bullet put are pressed downward
Property bar deform, formed in the middle of is bent outwardly cydariform, in the thimble drilling setting of casing of downcomer bottom, the bullet on thimble
Property card is engaged with the hole clipping on setting of casing, the anti-block sets of distending into cydariform is fixed；5. filler, in wellhole and downcomer
Between first fill out rough sand filtrate, then fill out clay sealing；6. installation connecting element, the first house steward, the second house steward, suction pump, electric hot-air are sent out
Raw device；7. the first valve and the second valve are closed, draw water pump work, negative pressure of vacuum precipitation is carried out to foundation ditch；8. in negative pressure of vacuum
After the completion of precipitation, the first valve and the second valve are opened, the work of electric heating air generator carries out normal pressure hot blast drainage to foundation ditch.
The utility model beneficial effect is：Negative pressure of vacuum precipitation is carried out to the soil body first with suction pump, passes through permeable hole
By the diving in soil layer and construction interstitial water discharge earth's surface；After the completion of precipitation, electric heating air generator is recycled to carry out the soil body
Normal pressure hot blast drainage, evaporates normal pressure hot air convection in pipe, by the diving in soil layer and construction interstitial water discharge earth's surface, realizes soil
Body siphon drainage consolidation effect；By negative pressure of vacuum precipitation and normal pressure hot blast drainage so that the utility model has preferable drop
Water effect, and the drainage time is short, can save construction cost, with good economic benefit.In addition, anti-block sets are by sand and mud
It is blocked in wellhole, adds the drainage area in wellhole, there is supporting role simultaneously for borehole wall or filtrate, prevents alluvial
Permeable hole is blocked, is conducive to the discharge of underground water, it is to avoid common annular plug, the well produced due to space presence in wellhole
The phenomenon of hole wall erosion.
Brief description of the drawings
If Fig. 1 is the utility model structural representation.
If Fig. 2 is the utility model downcomer structural representation.
If Fig. 3 is the anti-blocking nested structure schematic diagram of the utility model.
If Fig. 4 is structural representation when not having distending after the anti-block sets of the utility model and downcomer are combined.
If Fig. 5 is structural representation when the anti-block sets of the utility model and downcomer combine rear distending.
If Fig. 6 is the utility model wellhole, downcomer, anti-block sets, filler, connector longitudinal plane structure schematic diagram.
Embodiment
The utility model is described further below in conjunction with the accompanying drawings.
A kind of well-points dewatering device for building engineering construction, including wellhole 1, downcomer 3, anti-block sets 2, filler 4, company
Fitting 15, the first house steward 5, the second house steward 13, suction pump 8, electric heating air generator 10, it is characterized in that：
As shown in figure 1, the wellhole 1 is the cylindrical bore straight down being drilled in the surrounding of foundation ditch 14 with rig, well
The spacing of hole 1, depth meet geological conditions, precipitation depth and engineering characteristic；
Such as Fig. 2 combinations Fig. 1 and Fig. 6, the downcomer 3 is arranged in the center of wellhole 1, downcomer 3 and is provided with a longitudinal baffle
16, dividing plate 16, which is separated into downcomer 3 on two-chamber, the tube wall of the epimere of downcomer 3, does not have gap to be seamless section 17, under downcomer 3
The tube wall of section is permeable section 18 provided with some permeable holes 21, and the bottom of downcomer 3 is provided with thimble 19, and the bottom of thimble 19 is in point
Shape closed, the inner chamber of thimble 19 connects the two-chamber of downcomer 3, and the outer wall of thimble 19 is provided with elastic card 21；
Such as Fig. 3 combinations Fig. 2 and Fig. 4, the anti-block sets 2 are arranged on permeable section of 18 tube walls of downcomer 3, for supporting the borehole wall
Or filtrate, prevent alluvial block permeable hole 21, anti-block sets 2 include upper sleeve pipe 22, setting of casing 25, in upper sleeve pipe 22, setting of casing 25
Between some elastic strips 23 are set, the length of elastic strip 23 is more than the length of permeable section 18 of downcomer, and upper sleeve pipe 22 is set on drop
On water pipe 3 and it is fixed on permeable section of 18 upper ends, setting of casing 25 exposes the lower end of downcomer 3, and setting of casing 25 is provided with hole clipping 24, the card
Hole 24 matches with the elastic card 21 on thimble 19；
As shown in fig. 6, the filler 4 is filled out between wellhole 1 and downcomer 3,4 points of filler is two layers up and down, and lower floor 26 is
Rough sand filtrate, upper strata 27 is clay and sealed with soil layer around；
Such as Fig. 6 combinations Fig. 1, the connector 15 is arranged on the upper end of downcomer 3, for by the two-chamber of downcomer 3 respectively with
First house steward 5, the second house steward 13 connection are got up, and connector 15 is included the cover plate 28 of the upper end closed of downcomer 3, is set on cover plate 28
There are two outlets, two outlets are connected with the two-chamber of downcomer 3, curved connecting leg 29 is designed with two outlets；
Such as Fig. 1 combinations Fig. 6, first house steward 5 has connected with one of them curved connecting leg 29 of each upper end of downcomer 3
Come, the first house steward 5 is provided with two connectors, and one of connector 9 is the interface of suction pump 8, another connector 6 is provided with the
One valve 7；
Such as Fig. 1 combinations Fig. 6, second house steward 13 connects with another curved connecting leg 29 of each upper end of downcomer 3,
Second house steward 13 is provided with a connector 12, the connection electric heating of connector 12 air generator 10；
Such as Fig. 1, the suction pump 8 is jetting stream vacuum suction pump, and suction pump 8 is arranged on the one of of the first house steward 5 and connected
On interface 9；
Such as Fig. 1, the electric heating air generator 10 is industrial electroheat air generator, and it is total that electric heating air generator 10 is arranged on second
On the connector 12 of pipe 13, the second valve 11 is provided between electric heating air generator 10 and connector 12.
Further, the wellhole 1 every 20~30 be set to be equipped with one group, every group first house steward 5, one it is second total
Pipe 13, suction pump 8, an electric heating air generator 10.
Further, a diameter of 100~200mm of the wellhole 1, the depth of wellhole 1 is 5~10m, the spacing of wellhole 1 is 3~
5m。
Further, a diameter of 30~60mm of the downcomer 3, the length of downcomer 3 is 5~10m.
Further, the length of permeable section 18 of the downcomer 3 is 2~3m.
Further, the length of the anti-block sets 2 is 2.5~3.5m.
Further, the rough sand filtrate uses 3~6mm of particle diameter mung bean sand filtering material.
Further, the thickness of the clay of filler upper strata 27 is more than 1m.
Further, screen pack is coated on permeable section 18 of the downcomer 3, screen pack uses heatproof brass wire gauze.
Further, the permeable hole 21 is rhombus, and the diamond hole in adjacent column mutually staggers.
The utility model work progress：1. processing and fabricating downcomer 3 and anti-block sets 2 on request, and in permeable section of downcomer 3
18 fix anti-block sets 2；2. the setting position on foundation ditch carries out drilling construction with rig, forms wellhole 1, the spacing of wellhole 1, depth
Degree meets geological conditions, precipitation depth and engineering characteristic；3. part rough sand filtrate is inserted in wellhole 1 to wellhole bottom, in wellhole 1
Interior installation downcomer 3, makes the bottom of anti-block sets 2 on downcomer 3 prop up the rough sand filtrate on the bottom of wellhole 1；4. it is pressed downward downcomer
3, the elastic strip 23 in anti-block sets 2 deforms, formed in the middle of is bent outwardly cydariform, such as Fig. 5, the thimble of the bottom of downcomer 3
In 19 drilling setting of casings 25, the elastic card 20 on thimble 19 is engaged with the hole clipping 24 on setting of casing 25, makes distending into cydariform
Anti- block sets 2 fixed；5. filler, first fills out rough sand filtrate, then fill out clay sealing between wellhole 1 and downcomer 3；6. install
Connector 15, the first house steward 5, the second house steward 13, suction pump 8, electric heating air generator 10；7. the first valve 7 and the second valve are closed
Door 11, suction pump 8 works, and negative pressure of vacuum precipitation is carried out to foundation ditch, as the single sunrise water shortage 0.3m of wellhole 13When represent true
Idling pressure drop water is completed；8. after the completion of negative pressure of vacuum precipitation, the first valve 7 and the second valve 11, electric heating air generator are opened
10 work, normal pressure hot blast drainage is carried out to foundation ditch, and EAT controls 120~150 DEG C, can when water content of soil is less than 25%
To stop the construction of normal pressure hot blast drainage.
Claims (10)
1. a kind of well-points dewatering device for building engineering construction, including wellhole, downcomer, anti-block sets, filler, connector,
First house steward, the second house steward, suction pump, electric heating air generator, it is characterized in that：
The wellhole is the cylindrical bore straight down being drilled in foundation ditch surrounding with rig, and wellhole spacing, depth meet ground
Matter condition, precipitation depth and engineering characteristic；
The downcomer is arranged in wellhole center, downcomer and is provided with a longitudinal baffle, and downcomer is separated into two-chamber by dividing plate, is dropped
It is seamless section not have gap on the tube wall of water pipe epimere, and it is permeable section that the tube wall of downcomer hypomere, which is provided with some permeable holes, drop
Water pipe bottom is provided with thimble, and thimble bottom is in pointed closing, and back cover tube cavity connects the two-chamber of downcomer, outside thimble
Wall is provided with elastic card；
It is described it is anti-blocking be set on permeable section of tube wall of downcomer, for support the borehole wall or filtrate, prevent alluvial block permeable hole,
Anti- block sets include upper sleeve pipe, setting of casing, and some elastic strips are set between upper sleeve pipe, setting of casing, and the length of elastic strip is more than drop
The length that permeable section of water pipe, upper sleeve pipe is set on downcomer and is fixed on permeable section of upper end, and setting of casing exposes downcomer lower end,
Setting of casing is provided with hole clipping, and the hole clipping matches with the elastic card on thimble；
The filler is filled out between wellhole and downcomer, filler be divided into above and below two layers, lower floor be rough sand filtrate, upper strata be clay and
Sealed with soil layer around；
The connector is arranged on downcomer upper end, for the two-chamber of downcomer is connected with the first house steward, the second house steward respectively
Get up, connector is included the cover plate of downcomer upper end closed, and cover plate is provided with two outlets, and two outlets are double with downcomer
Chamber is connected, and curved connecting leg is designed with two outlets；
First house steward connects with one of them curved connecting leg of each downcomer upper end, and the first house steward is provided with two companies
Interface, one of connector is the pump interface that draws water, and another connector is provided with the first valve；
Second house steward connects with another curved connecting leg of each downcomer upper end, and the second house steward is provided with a connection
Mouthful, connector connection electric heating air generator；
The suction pump is jetting stream vacuum suction pump, and suction pump is arranged on one of connector of the first house steward；
The electric heating air generator is industrial electroheat air generator, and electric heating air generator is arranged on the connector of the second house steward,
The second valve is provided between electric heating air generator and connector.
2. a kind of well-points dewatering device for building engineering construction according to claim 1, it is characterized in that：The wellhole is every
20~30 are set to be equipped with first house steward, the second house steward, suction pump, an electric hot-air hair in one group, every group
Raw device.
3. a kind of well-points dewatering device for building engineering construction according to claim 1, it is characterized in that：The wellhole
A diameter of 100~200mm, the depth of wellhole is 5~10m, and wellhole spacing is 3~5m.
4. a kind of well-points dewatering device for building engineering construction according to claim 1, it is characterized in that：The downcomer
A diameter of 30~60mm, the length of downcomer is 5~10m.
5. a kind of well-points dewatering device for building engineering construction according to claim 1, it is characterized in that：The downcomer
Permeable section of length is 2~3m.
6. a kind of well-points dewatering device for building engineering construction according to claim 1, it is characterized in that：The anti-block sets
Length be 2.5~3.5m.
7. a kind of well-points dewatering device for building engineering construction according to claim 1, it is characterized in that：The rough sand filter
Material uses 3~6mm of particle diameter mung bean sand filtering material.
8. a kind of well-points dewatering device for building engineering construction according to claim 1, it is characterized in that：On the filler
The thickness of layer clay is more than 1m.
9. a kind of well-points dewatering device for building engineering construction according to claim 1, it is characterized in that：The downcomer
Permeable section of upper cladding screen pack, screen pack uses heatproof brass wire gauze.
10. a kind of well-points dewatering device for building engineering construction according to claim 1, it is characterized in that：It is described permeable
Hole is that the diamond hole in rhombus, adjacent column mutually staggers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720303646.6U CN206581281U (en) | 2017-03-16 | 2017-03-16 | A kind of well-points dewatering device for building engineering construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720303646.6U CN206581281U (en) | 2017-03-16 | 2017-03-16 | A kind of well-points dewatering device for building engineering construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206581281U true CN206581281U (en) | 2017-10-24 |
Family
ID=60115055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720303646.6U Expired - Fee Related CN206581281U (en) | 2017-03-16 | 2017-03-16 | A kind of well-points dewatering device for building engineering construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206581281U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110847200A (en) * | 2019-11-14 | 2020-02-28 | 河南理工大学 | Dewatering and dewatering structure and dewatering method for horizontal sand well of annular foundation pit |
| CN112095645A (en) * | 2020-10-20 | 2020-12-18 | 福建中设工程咨询有限公司 | Drainage structure and drainage method for building foundation pit |
-
2017
- 2017-03-16 CN CN201720303646.6U patent/CN206581281U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110847200A (en) * | 2019-11-14 | 2020-02-28 | 河南理工大学 | Dewatering and dewatering structure and dewatering method for horizontal sand well of annular foundation pit |
| CN110847200B (en) * | 2019-11-14 | 2024-02-06 | 河南理工大学 | Dewatering and draining structure and dewatering and draining method for horizontal sand well of annular foundation pit |
| CN112095645A (en) * | 2020-10-20 | 2020-12-18 | 福建中设工程咨询有限公司 | Drainage structure and drainage method for building foundation pit |
| CN112095645B (en) * | 2020-10-20 | 2021-08-24 | 福建中设工程咨询有限公司 | Drainage structure and drainage method for building foundation pit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171024 Termination date: 20180316 |