CN207244642U - A kind of high hydraulic pressure well-covering device for dewatering well - Google Patents
A kind of high hydraulic pressure well-covering device for dewatering well Download PDFInfo
- Publication number
- CN207244642U CN207244642U CN201720970035.7U CN201720970035U CN207244642U CN 207244642 U CN207244642 U CN 207244642U CN 201720970035 U CN201720970035 U CN 201720970035U CN 207244642 U CN207244642 U CN 207244642U
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- well
- casing
- steel pipe
- hydraulic pressure
- covering device
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Abstract
The utility model discloses a kind of high hydraulic pressure well-covering device for dewatering well, including steel pipe, casing, umbrella sealing mechanism and the dipper crowding gear for being arranged on steel pipe top；Described sleeve pipe is arranged on the outside of steel pipe, is provided with guide groove；The umbrella sealing mechanism includes internal stent, outside support and annulus sliding block, and one end and the outside support of internal stent are hinged, and the other end of internal stent is welded on annulus sliding block；Described sleeve pipe is arranged concentrically with steel pipe, and welding block is arranged in the guide groove on casing, and annulus sliding block is fixed by welding block and steel-pipe welding；Lower flange on the dipper crowding gear is fixed on dewatering well well head, and lower flange is welded by snap ring and casing, and screw rod is fixed with lower flange；The upper flange is connected fixation with screw rod, it is connected by positioning pin with steel pipe top.Nut on rotary screw can adjust the position of upper flange.Well-sealing device provided by the utility model is rational in infrastructure, easy to operate, has the advantages that good airproof performance.
Description
Technical field
It the utility model is related to dewatering well well-filling techniques field, more particularly to a kind of high hydraulic pressure well-covering device for dewatering well.
Background technology
With the development of urban construction, more and more cities have started subway work, due to environment where subway station
Change, cause foundation depth to be continuously increased.Metro Deep Excavation construction is carried out in rich water region, it is necessary to set in foundation pit scope to subtract
Kill-job and dewatering well, pumping relief on demand is carried out in the whole digging process of foundation pit, the water surface is less than more than foundation pit bottom 1m, is ensured
Foundation Pit bottom is dried, and keeps foundation pit being capable of normal construction.
When the excavation of foundation pit bottom of to, it is necessary to carry out dewatering well shut-in well construction before pouring base plate of foundation pit.The shut-in well construction of early period
The dewatering well position for the operation selected in advance, ensures that artesian water head is can be controlled in below dewatering well backfill absolute altitude, because before this
Phase shut-in well construction shut-in well technique can shunt in a well by, and the shut-in well in later stage is constructed since hydraulic pressure is big, is caused last some
Mouthful dewatering well can not be shunt in a well by normal construction technique in the effect of high water head artesian water.
A kind of foundation pit high water head Dewatering by pressure reduction well shut-in well method, including top drainage steel pipe, lower part exists in the prior art
Drain steel pipe, lower part water-stopping steel ring flat-plate, top water-stopping steel ring flat-plate, plug, clay ball, microdilatancy plain concrete, than bottom plate coagulation
The high concrete of soil；Its construction procedure is as follows：
Lower part water-stopping steel ring flat-plate is connected with lower part drainage steel pipe full weld first, top drainage steel pipe is drained into steel with lower part
Pipe makees the obtained drainage tube of flexible connection by screw thread, and then by drainage tube（Side containing lower part water-stopping steel ring flat-plate）It is inserted into precipitation
Inside well well casing, designed elevation position is down pressed into；
Clay ball is backfilled to designed elevation position to well casing inside secondly by the top of dewatering well well casing, followed by drop
Continue to backfill microdilatancy plain concrete to designed elevation position, whole backfilling process underground height to well casing inside at the top of well well casing
Head artesian water continues through drainage tube discharge；
Then after treating microdilatancy plain concrete initial set, top drainage steel pipe is removed, plug is run through and seals lower part and draw
Steel pipe top is flowed, prevents underground high water head artesian water from draining steel pipe by lower part and emerges, and then in top water-stopping steel ring flat-plate upper table
Face and lower surface are laid with leak stopping king, and put it into inside dewatering well well casing, at the upper surface location of microdilatancy plain concrete, lead to
Electric welding is crossed to be connected top water-stopping steel ring flat-plate with lower part drainage steel pipe top, plug and dewatering well well casing full weld；
Finally, dewatering well well casing is shut with a concrete higher than underplate concrete.
Existing technology well-sealing device is complicated, and is not suitable for precipitation event complexity, and the larger occasion of hydraulic pressure is existing
The shut-in well method of technology, which exists, seals unreal risk.
Utility model content
The purpose of this utility model is to be directed to above-mentioned technical problem, there is provided a kind of high hydraulic pressure well-covering device for dewatering well and its
Construction method, its is rational in infrastructure, easy to operate, and can underwater sealing operation, there is good airproof performance.
The technical solution of the utility model
In order to solve the above technical problems, a kind of high hydraulic pressure well-covering device for dewatering well provided by the utility model includes steel pipe,
Casing, is arranged on the umbrella sealing mechanism of jacket exterior and is arranged on the dipper crowding gear on steel pipe top；Described sleeve pipe is arranged on steel pipe
Outside, is provided with guide groove；The umbrella sealing mechanism includes internal stent, outside support and annulus sliding block, internal stent
One end is hinged with outside support, and the other end of internal stent is welded on annulus sliding block；Described sleeve pipe is arranged concentrically with steel pipe, weldering
Block is arranged in the guide groove on casing, and annulus sliding block is fixed by welding block and steel-pipe welding；The dipper crowding gear includes top
Flange, lower flange, screw rod and snap ring, the lower flange are fixed on dewatering well well head, and lower flange passes through snap ring and casing
Weld, screw rod is fixed with lower flange；The upper flange is connected fixation with screw rod, it is connected by positioning pin and steel pipe top
Connect, and the position of upper flange is adjusted by the nut on screw rod.
Further, the well-sealing device further includes plug, it is welded on the lower part of casing, realizes the close of sleeve bottom
Envelope, to prevent the water sleeve pipe of dewatering well.
Further, waterproof layer is provided with the outside support on the umbrella sealing mechanism, the end set of outside support has
Hook, hook are directly caught in the borehole wall of dewatering well, realize the fixation of umbrella sealing mechanism.
Further, the end set of the hook has 45 ° of wedge-type shapes, and wedge-shaped design enables outside support more preferable
The insertion dewatering well borehole wall.
Further, the axially disposed some groups of guide grooves of described sleeve pipe, the quantity of same plane guide groove is four, its
It is evenly distributed with along the circumferential direction of casing.
Further, the width of the guide groove is equipped with welding block, and welding block is free to slide in guide groove, guide groove
Length be greater than or equal to the length difference of steel pipe and casing, to realize that umbrella sealing mechanism is fully deployed, realize the sealing in dewatering well.
Further, the quantity of the umbrella sealing mechanism is equipped with according to the hydraulic pressure of dewatering well, between adjacent umbrella sealing mechanism
Distance be more than 1.5 times of outside support, the spacing of rational deployment umbrella sealing mechanism, prevents to interfere.
Further, be provided with centre bore in the middle part of the lower flange, the center of the upper flange set to
Under positioning pin, the edge correspondence position of upper flange and lower flange is provided with a pair of of threaded hole.
The utility model beneficial effect：
A kind of high hydraulic pressure well-covering device for dewatering well provided by the utility model and its construction method, its is rational in infrastructure, it has
Body has the beneficial effect that：
（1）Its is rational in infrastructure, pre-sealed using some umbrella sealing mechanisms, and top is real using concreting envelope, has good
Leakproofness；
（2）Well-sealing device shown in the application according to the water pressures of dewatering well, can flexibly set the quantity of umbrella sealing mechanism,
Realized using umbrella sealing mechanism pre-sealed, can be operated in the case where dewatering well has water, there is good applicability.
Brief description of the drawings
By the detailed description made in conjunction with the following drawings, the above-mentioned advantage of the utility model will be apparent and more hold
Readily understood, these attached drawings are simply schematical, are not intended to limit the utility model, wherein：
Fig. 1 is the structure diagram of high hydraulic pressure well-covering device for dewatering well described in the utility model；
Fig. 2 is the structure diagram of the casing of the utility model；
Fig. 3 is the structure diagram of the umbrella sealing mechanism of the utility model；
Fig. 4 is the schematic diagram of the umbrella sealing mechanism unfolded state of the utility model；
Fig. 5 is the sectional view of A-A in Fig. 1；
Fig. 6 is the sectional view of the casing of the utility model；
Fig. 7 is the schematic diagram of the upper flange of the utility model；
Fig. 8 is the schematic diagram of the lower flange of the utility model；
Fig. 9 is the sectional view of the upper flange of the utility model；
Figure 10 is the schematic diagram after shut-in well component insertion described in the utility model；
Figure 11 is the schematic diagram after umbrella sealing assembly expansion described in the utility model；
Figure 12 is the schematic diagram after precipitation well head part concreting described in the utility model.
In attached drawing, the component representated by each label is as follows：
1. steel pipe；2. casing；3. umbrella sealing mechanism；4. internal stent；5. outside support；6. annulus sliding block；7. welding block；8. lead
To groove；9. plug；10. upper flange；11. lower flange；12. screw rod；13. snap ring；14. centre bore；15. positioning pin；16. spiral shell
Pit.
Embodiment
With reference to specific embodiments and the drawings, to a kind of high hydraulic pressure well-covering device for dewatering well described in the utility model and its
Construction method is described in detail.
The embodiment recorded herein is the specific embodiment of the utility model, for illustrating the utility model
Design, is explanatory and exemplary, should not be construed as the limit to the utility model embodiment and the scope of the utility model
System.In addition to the embodiment recorded herein, those skilled in the art can also be based on the application claims and specification institute is public
The content opened includes doing using the embodiment to recording herein using obvious other technical solutions, these technical solutions
Go out the technical solution of any obvious substitutions and modifications.
The attached drawing of this specification is schematic diagram, aids in illustrating the design of the utility model, it is schematically indicated each several part
Shape and its correlation.Note that for the ease of clearly show the utility model embodiment each component structure, respectively
Do not drawn between attached drawing according to identical ratio.Identical reference marker is used to represent identical part.
Fig. 1 to Figure 12 is that the correlation of a kind of high hydraulic pressure well-covering device for dewatering well described in the utility model and its construction method is shown
It is intended to.
A kind of structure diagram of high hydraulic pressure well-covering device for dewatering well, as shown in Figure 1, it includes steel pipe 1, casing 2, is set
Umbrella sealing mechanism 3 outside casing 2 and the dipper crowding gear for being arranged on 1 top of steel pipe.
Fig. 2 is the schematic diagram of described sleeve pipe, it is arranged on the outside of steel pipe 1, and guide groove 8 is provided with casing 2.The umbrella
The schematic diagram of sealing mechanism, as shown in figure 3, it includes internal stent 4, outside support 5 and annulus sliding block 6, one end of internal stent 4
Hinged with outside support 5, the other end of internal stent 4 is welded on annulus sliding block 6, and Fig. 4 is showing for umbrella sealing mechanism unfolded state
It is intended to.
Described sleeve pipe 2 is arranged concentrically with steel pipe 1, and welding block 7 is arranged in the guide groove 8 on casing 2, and annulus sliding block 6 passes through
Welding block 7 is welded and fixed with steel pipe 1, as shown in Figure 5.Welding block 7 is slided up and down along guide groove 8, the annulus being fixed together with welding block 7
Sliding block 6 is also moving up and down, that is, drives internal stent 4 to fold, and realizes the folding of umbrella sealing mechanism.
The dipper crowding gear includes upper flange 10, lower flange 11, screw rod 12 and snap ring 13, and the lower flange 11 is solid
Dewatering well well head is scheduled on, lower flange 11 is welded by snap ring 13 and casing 2, and screw rod 12 is fixed with lower flange 11；It is described
Upper flange 10 is connected fixation with screw rod 12, it is connected by positioning pin 15 with the top of steel pipe 1, and passes through the nut on screw rod 12
Adjust the position of upper flange 10；The well-sealing device further includes plug 9, it is welded on the lower part of casing 2, as shown in Figure 1.
Waterproof layer is provided with outside support 5 on the umbrella sealing mechanism 3, the end set of outside support 5 has hook；Institute
Stating the end set of hook has 45 ° of wedge-type shapes.The design of wedge shape enables outside support to be preferably inserted into the dewatering well borehole wall.
The axially disposed some groups of guide grooves 8 of described sleeve pipe 2, the quantity of same plane guide groove 8 are four, it is along casing
2 circumferential direction is evenly distributed with, as shown in Figure 6.The width of the guide groove 8 is equipped with welding block 7, the free skating in guide groove 8 of welding block 7
Dynamic, the length of guide groove 8 is greater than or equal to the length difference of steel pipe 1 and casing 2, and guide groove 8 is arranged to the smooth of umbrella sealing mechanism
Folding provides guarantee.
The quantity of the umbrella sealing mechanism 3 is equipped with according to the hydraulic pressure of dewatering well, and the distance between adjacent umbrella sealing mechanism 3 is big
In 1.5 times of outside support 5.
Fig. 7, Fig. 8 are the top view of upper flange and lower flange respectively, during the middle part of the lower flange 11 is provided with
Heart hole 14；The center of the upper flange 10 sets downward positioning pin 15, as shown in figure 9, upper flange 10 and lower part
The edge correspondence position of flange 11 is provided with a pair of of threaded hole 16.
The invention also discloses a kind of construction method of high hydraulic pressure well-covering device for dewatering well, it specifically includes following step
Suddenly：
S1, the bottom of mechanical excavation to foundation pit, more than 1m below the elevation of bottom position of dewatering well is reduced to by water level,
Bottom of foundation ditch performs the installation space of bottom plate and reserved well-sealing device；
Specifically, prepare in bottom slab concreting in dewatering well periphery embedded bar for the fixation of follow-up lower flange.
S2, proposes the water pump in dewatering well, is laid with waterproof material in dewatering well well head, lower flange 11 is fixed on precipitation
Well well head, and screw rod 12 is installed, screw rod 12 and lower flange 11 weld together；
Specifically, using expansion bolt by 11 fixation of lower flange, and by lower flange and pre-buried reinforcement welding,
To reinforce the fixation of lower flange 11.
S3, steel pipe 1, casing 2, plug 9 and umbrella sealing mechanism 3 are assembled, and form well-sealing device component；
Specifically, plug 9 is welded on to the bottom of casing 2, the welding block 7 on umbrella sealing mechanism 3 and annulus sliding block 6 and steel pipe 1
Weld together, and make on the guide groove 8 that welding block 7 is arranged on casing 2.
Well-sealing device component, is passed through the centre bore 14 of lower flange 11, by snap ring 13 and lower flange 11 and casing 2 by S4
It is welded and fixed；
As shown in Figure 10, the closure state of umbrella sealing mechanism processing at this time, well-sealing device component can pass through lower flange 11
Centre bore 14, and snap ring 13 and lower flange 11 and casing 2 are welded and fixed, i.e., casing 2 is fixed on the ground of foundation pit.
Positioning pin 15 in upper flange 10, is inserted into the top of steel pipe 1 by S5, and the nut rotation on screw rod 12 is downward, into
And upper flange 10 is moved down, it is fully deployed the waterproof layer on umbrella sealing mechanism 3, the hook on umbrella sealing mechanism 3 is caught in precipitation
The borehole wall of well；
As shown in figure 11, upper flange 10 is moved down by screw rod 12, while steel pipe 1 is pressed down, the welding block 7 on steel pipe 1
Moved down along guide groove 8, and drive the internal stent fixed with annulus sliding block 6 to be unfolded, that is, driven outside support 5 to act, make umbrella
Waterproof layer on sealing mechanism 3 is fully deployed, and the hook on umbrella sealing mechanism 3 is caught in the borehole wall of dewatering well.
S6, passes through the gap casting concrete between upper flange 10 and reserved opening, water level lowering well sealing.
As shown in figure 12, to realize better seal, operating personnel pass through the gap between upper flange 10 and reserved opening
Casting concrete, water level lowering well sealing.
In the case that well-sealing device described herein and its construction method can also have water applied to dewatering well.
Compared with the prior art the shortcomings that and deficiency, a kind of high hydraulic pressure well-covering device for dewatering well provided by the utility model and
Its construction method, its is rational in infrastructure, easy to operate, and can underwater sealing operation, there is good airproof performance.
The utility model is not limited to the above embodiment, anyone can draw other under the enlightenment of the utility model
Various forms of products, however, make any change in its shape or structure, it is every with identical or similar to the present application
Technical solution, all fall within the scope of protection of the utility model.
Claims (8)
1. a kind of high hydraulic pressure well-covering device for dewatering well, it is characterised in that including steel pipe（1）, casing（2）, it is arranged on casing（2）Outside
The umbrella sealing mechanism in portion（3）And it is arranged on steel pipe（1）The dipper crowding gear on top；Described sleeve pipe（2）It is arranged on steel pipe（1）Outside,
It is provided with guide groove（8）；The umbrella sealing mechanism（3）Including internal stent（4）, outside support（5）And annulus sliding block（6）,
Internal stent（4）One end and outside support（5）It is hinged, internal stent（4）The other end be welded on annulus sliding block（6）On；Institute
State casing（2）With steel pipe（1）It is arranged concentrically, welding block（7）It is arranged on casing（2）On guide groove（8）It is interior, annulus sliding block（6）It is logical
Cross welding block（7）With steel pipe（1）It is welded and fixed；The dipper crowding gear includes upper flange（10）, lower flange（11）, screw rod（12）
And snap ring（13）, the lower flange（11）It is fixed on dewatering well well head, lower flange（11）Pass through snap ring（13）With casing（2）
Welding, lower flange（11）On be fixed with screw rod（12）；The upper flange（10）With screw rod（12）Connection is fixed, and it is fixed that it passes through
Position pin（15）With steel pipe（1）Top connects, and passes through screw rod（12）On nut adjust upper flange（10）Position.
2. high hydraulic pressure well-covering device for dewatering well according to claim 1, it is characterised in that the well-sealing device further includes plug
（9）, it is welded on casing（2）Lower part.
3. high hydraulic pressure well-covering device for dewatering well according to claim 1, it is characterised in that the umbrella sealing mechanism（3）On it is outer
Portion's stent（5）On be provided with waterproof layer, outside support（5）End set have hook.
4. high hydraulic pressure well-covering device for dewatering well according to claim 3, it is characterised in that the end set of the hook has
45 ° of wedge-type shapes.
5. high hydraulic pressure well-covering device for dewatering well according to claim 1, it is characterised in that described sleeve pipe（2）It is axially disposed
Some groups of guide grooves（8）, same plane guide groove（8）Quantity be four, it is along casing（2）Circumferential direction be evenly distributed with.
6. high hydraulic pressure well-covering device for dewatering well according to claim 1, it is characterised in that the guide groove（8）Width with
Welding block（7）It is equipped with, welding block（7）In guide groove（8）It is interior free to slide, guide groove（8）Length be greater than or equal to steel pipe（1）
With casing（2）Length difference.
7. high hydraulic pressure well-covering device for dewatering well according to claim 1, it is characterised in that the umbrella sealing mechanism（3）Quantity
Set according to the hydraulic pressure size of dewatering well, adjacent umbrella sealing mechanism（3）The distance between be more than outside support（5）1.5 times.
8. high hydraulic pressure well-covering device for dewatering well according to claim 1, it is characterised in that the lower flange（11）Middle part
It is provided with centre bore（14）, the upper flange（10）Centrally disposed downward positioning pin（15）, upper flange（10）With under
Portion's flange（11）Edge correspondence position be provided with a pair of of threaded hole（16）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720970035.7U CN207244642U (en) | 2017-08-04 | 2017-08-04 | A kind of high hydraulic pressure well-covering device for dewatering well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720970035.7U CN207244642U (en) | 2017-08-04 | 2017-08-04 | A kind of high hydraulic pressure well-covering device for dewatering well |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207244642U true CN207244642U (en) | 2018-04-17 |
Family
ID=61879033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720970035.7U Expired - Fee Related CN207244642U (en) | 2017-08-04 | 2017-08-04 | A kind of high hydraulic pressure well-covering device for dewatering well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207244642U (en) |
-
2017
- 2017-08-04 CN CN201720970035.7U patent/CN207244642U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20180417 Termination date: 20180804 |
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| CF01 | Termination of patent right due to non-payment of annual fee |