CN109024640A - One kind closing water valve device, shut-in well structure and its construction method - Google Patents
One kind closing water valve device, shut-in well structure and its construction method Download PDFInfo
- Publication number
- CN109024640A CN109024640A CN201810911192.XA CN201810911192A CN109024640A CN 109024640 A CN109024640 A CN 109024640A CN 201810911192 A CN201810911192 A CN 201810911192A CN 109024640 A CN109024640 A CN 109024640A
- Authority
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- Prior art keywords
- diameter section
- well
- necking down
- down casing
- shut
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- Pending
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 52
- 238000010276 construction Methods 0.000 title claims abstract description 28
- 239000010410 layer Substances 0.000 claims abstract description 32
- 239000011241 protective layer Substances 0.000 claims abstract description 10
- 238000009434 installation Methods 0.000 claims abstract description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 12
- 239000004570 mortar (masonry) Substances 0.000 claims description 8
- 230000007704 transition Effects 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 2
- 238000005259 measurement Methods 0.000 claims description 2
- 239000010959 steel Substances 0.000 claims description 2
- 239000011800 void material Substances 0.000 claims description 2
- 210000003205 muscle Anatomy 0.000 claims 1
- 239000004576 sand Substances 0.000 claims 1
- 238000007789 sealing Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000001556 precipitation Methods 0.000 description 4
- 238000005266 casting Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
Abstract
One kind closing water valve device, shut-in well structure and its construction method, wherein closing water valve device includes necking down casing, the flange ring flat-plate of nozzle and sequentially connected waterproof pad and blank flange, necking down casing includes the enlarged diameter section of lower part and the reduced diameter section on top, and the two communicates and middle overlapping of axles.Specifically shut-in well construction method includes the following steps: to test dewatering well size, water level and pump-out, and water valve well-sealing device and self prime pump are closed in production；Water valve device is closed in installation, and enlarged diameter section is located at design water level absolute altitude, and reduced diameter section connects self prime pump by water pipe；It constructs in dewatering well hull-borne to waterproof protective layer, reinforced bar engineering etc.；It carries out necking down casing inner concrete to close water and use waterproof pad and blank flange sealing orifice, finally completes the construction of sole plate layer.The present invention can safely and effectively carry out closing trapped well, easy to operate and bottom plate engineering construction can be completed under dewatering well hull-borne, save the construction time.
Description
Technical field
The present invention relates to Construction of Civil Engineering field, specially one kind closes water valve device, shut-in well structure and its construction method.
Background technique
In construction, deep-foundation pit engineering and drainage system are more and more, and for foundation pit area, depth is larger and underground
Water phase drains region abundant only by the scheme of peripheral disposition dewatering well, and not only engineering measure is costly, very
The demand of precipitation is no longer satisfied in more situations.In engineering dewatering, dewatering well is set inside building and foundation pit nucleus
The case where it is more next universal, but it is internal to set dewatering well its safety for closing trapped well often poor, easily influence construction quality.Cause
This, for the construction speed and quality requirement for meeting engineering, it is desirable to provide effectively drained in a kind of pair of dewatering well and safety closes water seal
The device and construction method of well.
Summary of the invention
The present invention proposes that one kind is closed water valve device, shut-in well structure and its construction method, the precipitation by closing water valve device and arranged
Water-stop technique is applied and closed, safely and effectively closes water to solve under big water yield, do not influence dewatering well top construction speed
The problem of shut-in well.
Specific technical solution of the present invention is:
A kind of water valve device that closes includes necking down casing, the flange ring flat-plate for being welded on necking down casing nozzle and is connected to flange in turn
Waterproof pad and blank flange on ring flat-plate；The necking down casing includes the enlarged diameter section of lower part and the reduced diameter section on top, greatly
Both diameter segment and reduced diameter section communicate and middle overlapping of axles.
The transition shoulder of the enlarged diameter section and reduced diameter section is horizontal segment or tilting section, the transition shoulder of necking down casing
Higher than dewatering well well head.
The necking down casing for closing water valve device is arranged in that the upper end of dewatering well, there are gap, institutes with the dewatering well borehole wall
It states at the top of dewatering well, necking down casing surrounding has been sequentially arranged blinding layer, waterproof layer, waterproof protective layer and sole plate layer.
Void size is 50~100mm between the necking down casing and the dewatering well borehole wall, and bottom is spunyarn in gap, remaining
Gap is filled with dry water-proof concrete.
The blinding layer is flushed with enlarged diameter section transition shoulder position or low 10~30mm.
The blinding layer and enlarged diameter section delivery position are anti-in reduced diameter section closure using mortar circular arc and bed course drop-over
Water closes up.
The waterproof layer is laid with and is bonded on reduced diameter section top along blinding layer and mortar surface and closes up.
Baseplate reinforcing bar is poured in the sole plate layer, the baseplate reinforcing bar skeleton is reticular structure, and grid spacing
Greater than reduced diameter section overall diameter.
The construction method of the shut-in well structure, the specific steps are as follows:
Step 1: measurement dewatering well size, determines water level face and water；
Step 2: determining necking down casing bit size, self prime pump (8) lift and pump-out based on above-mentioned test data；
Step 3: installation necking down casing, is wherein mounted on design water level position in dewatering well at the top of enlarged diameter section, is sealed using spunyarn
It simultaneously fills dewatering well inner wall and closes gap between water valve device in bottom；
Step 4: waterproof pad and blank flange are in an open state, reduced diameter section nozzle connects self prime pump by water pipe；
Step 5: being drawn water other than operation side using self prime pump, under dewatering well hull-borne, successively carry out
Blinding layer, mortar circular arc and bed course drop-over, waterproof layer, the construction for being closed waterproof closing in, waterproof protective layer and baseplate reinforcing bar；
Step 6: carrying out sole plate layer concrete after completing baseplate reinforcing bar construction and pouring, pour to necking down casing nozzle absolute altitude
When lower section, stop pouring；
Step 7: take out connection self prime pump water pipe, from necking down casing into dewatering well fill concrete；
Step 8: being bolted waterproof pad and blank flange in flange ring flat-plate upper orifice after filling up concrete in necking down casing
It carries out closing trapped well.
Compared with existing apparatus and method the invention has the following advantages:
The present invention has carried out improve and perfect to the water installations of closing of conventional dewatering well, passes through the variable diameter measure of necking down casing
By top reduced diameter section to having carried out effective draining in dewatering well, and the closed of lower part enlarged diameter section and dewatering well can be passed through
Filling avoids and destroys caused hidden danger of quality to underground water buoyancy, and drops by effective improve of casting concrete sealing
Well blocks quality, avoids the hidden danger of base plate leakage.Present device installation is simple, and method is easy to operate, do not influence waterproof layer,
The engineering construction of waterproof protective layer, sole plate layer saves construction cost to improve work efficiency.
Detailed description of the invention
Fig. 1 is to close water valve device structural map；
Fig. 2 is to close water valve device installation and precipitation schematic diagram；
Fig. 3 is to smear mortar circular arc and bed course drop-over schematic diagram；
Fig. 4 is waterproof layer, protective layer and reinforcement construction schematic diagram；
Fig. 5 is that underplate concrete pours and quickly shunt in a well schematic diagram；
Fig. 6 is flange ring-plane structure schematic diagram.
Appended drawing reference: 1- necking down casing；2- enlarged diameter section；3- reduced diameter section；4- flange ring flat-plate；5- waterproof pad；6- method
Tritonope plate；7- bolt；8- self prime pump；9- water pipe；The 10- dewatering well borehole wall；11- spunyarn；12- dry water-proof concrete；
13- blinding layer；14- mortar；15- waterproof layer；16- waterproof protective layer；17- cushion block；18- baseplate reinforcing bar；19- sole plate
Layer；20- bolt hole.
Specific embodiment
As shown in figures 1 to 6, one kind closing water valve device, shut-in well structure and its construction method, and closing water valve device includes necking down
Casing 1 and it is welded on that necking down covers the flange ring flat-plate 4 of 1 pipe nozzle, flange ring flat-plate 4 passes through the sequentially connected waterproof pad of bolt 7
5 and blank flange 6；The necking down casing 1 includes the reduced diameter section 3 of lower part enlarged diameter section 2 and the welding of 2 top of enlarged diameter section, greatly
2 bottom end opening of diameter segment, both enlarged diameter section 2 and reduced diameter section 3 communicate and middle overlapping of axles.
Wherein necking down casing 1 is configured using steel, and 2 diameter of enlarged diameter section is 300~500mm；3 diameter of reduced diameter section is less than
18 size of mesh opening of baseplate reinforcing bar, diameter are 100~200mm；1 6~12mm of wall thickness of necking down casing, material grade are Q235 or Q345
Grade.Enlarged diameter section 2 grows 450~1200mm, the long 300~500mm of reduced diameter section 3；6 specification of the flange ring flat-plate 4 and blank flange
Identical, material is identical as necking down casing 1, and waterproof pad 5 is with a thickness of 4mm.
7 specification of bolt uses diameter for the big hexagonal plain bolt of 8~14mm；Flange ring flat-plate 4, waterproof pad 5, method tritonope
4 bolts hole 20 are arranged in cross face on plate 6, and aperture location is corresponding, the big 2~5mm of 7 diameter of bolt used by aperture ratio；Spiral shell
20 centre distance necking down casing of keyhole, 1 outer wall and 4 edge of flange ring flat-plate should all >=25mm.Above-mentioned component specification is for convenience
Implement explanation, is not limited to this, can be adjusted according to actual implementation situation.
In order to meet requirement of the foundation construction to precipitation, while guaranteeing that dewatering well safely and effectively closes trapped well, improves envelope
Well quality, main applying step are as follows: 1) based on the size and groundwater condition for implementing project profile, dewatering well, water valve is closed in design
Device specification closes the corollary equipments dosage such as water valve device number of packages and self prime pump 8, water pipe 9 needed for determining.
2) it as shown in connection with fig. 2, installs and water valve device is closed in fixation, it is ensured that the height and blinding layer at 2 top of enlarged diameter section
13 flush or slightly higher 10~30mm, and 11 back cover of spunyarn, remaining space after back cover are used between enlarged diameter section 2 and the dewatering well borehole wall 10
It is sealed using dry water-proof concrete 12；Waterproof pad 5 and blank flange 6 are in an open state, and are passed through using self prime pump 8
Water pipe 9 connects reduced diameter section 3, drains to the underground water in dewatering well.
3) as shown in connection with fig. 3, under dewatering well hull-borne, bottom cushion construction is completed, bottom plate and necking down casing 1 join
Circular arc and bed course drop-over are smeared into using mortar 14 in position, do the detailed treatment of waterproof work in reduced diameter section 3, and carry out drop-over receipts
Mouthful.
4) as shown in connection with fig. 4, under dewatering well hull-borne, the bottom plate on dewatering well top and 3 periphery of reduced diameter section is carried out
Engineering construction first carries out the laying of bed course top waterproof layer 15 and waterproof protective layer 16, and then carries out the binding of baseplate reinforcing bar 18,
Cushion block 17 is installed between baseplate reinforcing bar 18 and waterproof protective layer 16.
5) it as shown in connection with fig. 5, completes baseplate reinforcing bar 18 to construct, pouring for concrete is carried out after acceptance(check), works as concrete
One-piece casting height when being up to 1 nozzle elevation of top of necking down casing, taking-up draws water water pipe 9, the fill concrete into casing,
It carries out closing water until filling up；Waterproof pad 5 and blank flange 6 are fixed on flange ring flat-plate 4 using bolt 7 then, complete envelope
Well operations continue pouring for underplate concrete, construct until completing sole plate layer 19.
Obviously, above-described embodiment is only intended to clearly illustrate made by outstanding feature of the invention and illustrates, and is not pair
The restriction of embodiment of the present invention；It, still can be on the basis of above explained use for those skilled in the art
It makes other variations or changes in different ways, if not carrying out inventive improvements to it, all belongs to the scope of protection of the present invention.
Claims (9)
1. one kind closes water valve device, it is characterised in that: including necking down casing (1), be welded on the flange ring of necking down casing (1) nozzle
Plate (4) and the waterproof pad (5) and blank flange (6) being connected in turn on flange ring flat-plate (4)；
The necking down casing (1) includes the enlarged diameter section (2) of lower part and the reduced diameter section (3) on top, enlarged diameter section (2) and small straight
Both diameter sections (3) communicate and middle overlapping of axles.
2. according to claim 1 close water valve device, it is characterised in that: the enlarged diameter section (2) and reduced diameter section (3)
Transition shoulder is horizontal segment or tilting section, and the transition shoulder of necking down casing (1) is higher than dewatering well well head.
3. a kind of using the shut-in well structure of any of claims 1 or 2 for closing water valve device, it is characterised in that: described to close water valve dress
The upper end of dewatering well is arranged in the necking down casing (1) set, with the dewatering well borehole wall (10) there are gap, at the top of the dewatering well,
Necking down casing (1) surrounding has been sequentially arranged blinding layer (13), waterproof layer (15), waterproof protective layer (16) and sole plate layer
(19).
4. shut-in well structure according to claim 3, it is characterised in that: the necking down casing (1) and the dewatering well borehole wall (10)
Between void size be 50~100mm, bottom is spunyarn (11) in gap, and remaining gap is filled with dry water-proof concrete
(12).
5. shut-in well structure according to claim 3, it is characterised in that: the blinding layer (13) and enlarged diameter section (2) mistake
Shoulder position is crossed to flush or low 10~30mm.
6. shut-in well structure according to claim 3, it is characterised in that: the blinding layer (13) and enlarged diameter section (2) are handed over
Position is connect using mortar (14) circular arc and bed course drop-over, is closed up in reduced diameter section (3) closure waterproof.
7. shut-in well structure according to claim 3, it is characterised in that: the waterproof layer (15) is along blinding layer (13) and sand
(14) surface is starched to be laid with and be bonded closing on reduced diameter section (3) top.
8. shut-in well structure according to claim 3, it is characterised in that: poured Bottom Board Steel in the sole plate layer (19)
Muscle (18), baseplate reinforcing bar (18) skeleton is reticular structure, and grid spacing is greater than reduced diameter section (3) overall diameter.
9. a kind of construction method of shut-in well structure as claimed in claim 8, which is characterized in that specific step is as follows:
Step 1: measurement dewatering well size, determines water level face and water；
Step 2: determining necking down casing (1) plant bulk, self prime pump (8) lift and pump-out based on above-mentioned test data；
Step 3: installation necking down casing (1), is wherein mounted on design water level position in dewatering well at the top of enlarged diameter section (2), utilize
Spunyarn (11) back cover simultaneously fills dewatering well inner wall and closes gap between water valve device；
Step 4: waterproof pad (5) and blank flange (6) are in an open state, reduced diameter section (3) nozzle is connected by water pipe (9)
Self prime pump (8)；
Step 5: being drawn water other than operation side using self prime pump (8), under dewatering well hull-borne, successively
Carry out blinding layer (13), mortar (14) circular arc and bed course drop-over, waterproof layer (15), the closing in of closure waterproof, waterproof protective layer
(16) and the construction of baseplate reinforcing bar (18)；
Step 6: carrying out sole plate layer (19) concreting after completing baseplate reinforcing bar (18) construction, pouring to necking down casing
(1) below nozzle absolute altitude when, stop pouring；
Step 7: the water pipe (9) of connection self prime pump (8) is taken out, from necking down casing (1) fill concrete into dewatering well；
Step 8: after filling up concrete in necking down casing, in flange ring flat-plate (4) upper orifice bolt (7) connection waterproof pad (5) and
Blank flange (6) carries out closing trapped well.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810911192.XA CN109024640A (en) | 2018-08-10 | 2018-08-10 | One kind closing water valve device, shut-in well structure and its construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810911192.XA CN109024640A (en) | 2018-08-10 | 2018-08-10 | One kind closing water valve device, shut-in well structure and its construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109024640A true CN109024640A (en) | 2018-12-18 |
Family
ID=64633656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810911192.XA Pending CN109024640A (en) | 2018-08-10 | 2018-08-10 | One kind closing water valve device, shut-in well structure and its construction method |
Country Status (1)
| Country | Link |
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| CN (1) | CN109024640A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112982461A (en) * | 2019-12-14 | 2021-06-18 | 浙江建腾建设有限公司 | Pipe well precipitation combined reducing steel sleeve plugging construction method |
| CN113832952A (en) * | 2021-09-25 | 2021-12-24 | 浙江省浙南综合工程勘察测绘院有限公司 | Soft soil foundation reinforcing method |
| CN114351740A (en) * | 2022-01-14 | 2022-04-15 | 成都华阳建筑股份有限公司 | Plugging method for high-water-level basement pressure-bearing dewatering well |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112982461A (en) * | 2019-12-14 | 2021-06-18 | 浙江建腾建设有限公司 | Pipe well precipitation combined reducing steel sleeve plugging construction method |
| CN113832952A (en) * | 2021-09-25 | 2021-12-24 | 浙江省浙南综合工程勘察测绘院有限公司 | Soft soil foundation reinforcing method |
| CN113832952B (en) * | 2021-09-25 | 2022-09-30 | 浙江省浙南综合工程勘察测绘院有限公司 | Soft soil foundation reinforcing method |
| CN114351740A (en) * | 2022-01-14 | 2022-04-15 | 成都华阳建筑股份有限公司 | Plugging method for high-water-level basement pressure-bearing dewatering well |
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