CN105951859B - Base pit dewatering well wears concrete of basement bottom plate closure sealing construction processing method - Google Patents
Base pit dewatering well wears concrete of basement bottom plate closure sealing construction processing method Download PDFInfo
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- CN105951859B CN105951859B CN201610377009.3A CN201610377009A CN105951859B CN 105951859 B CN105951859 B CN 105951859B CN 201610377009 A CN201610377009 A CN 201610377009A CN 105951859 B CN105951859 B CN 105951859B
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- 238000007789 sealing Methods 0.000 title claims abstract description 77
- 239000004567 concrete Substances 0.000 title claims abstract description 65
- 238000010276 construction Methods 0.000 title claims abstract description 44
- 238000003672 processing method Methods 0.000 title claims abstract description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 82
- 239000010959 steel Substances 0.000 claims abstract description 82
- 238000001556 precipitation Methods 0.000 claims abstract description 39
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 22
- 239000000835 fiber Substances 0.000 claims abstract description 12
- 244000025254 Cannabis sativa Species 0.000 claims abstract description 11
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 claims abstract description 11
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 claims abstract description 11
- 235000009120 camo Nutrition 0.000 claims abstract description 11
- 235000005607 chanvre indien Nutrition 0.000 claims abstract description 11
- 239000011487 hemp Substances 0.000 claims abstract description 11
- 239000011083 cement mortar Substances 0.000 claims abstract description 9
- 239000000843 powder Substances 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 4
- 239000004576 sand Substances 0.000 claims description 4
- 238000004804 winding Methods 0.000 claims description 4
- 241000251468 Actinopterygii Species 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 238000005452 bending Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 5
- 238000003780 insertion Methods 0.000 abstract description 3
- 230000037431 insertion Effects 0.000 abstract description 3
- 230000002045 lasting effect Effects 0.000 abstract 1
- 239000011150 reinforced concrete Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 14
- 238000000034 method Methods 0.000 description 6
- 230000008595 infiltration Effects 0.000 description 3
- 238000001764 infiltration Methods 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002787 reinforcement Effects 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
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention discloses a kind of base pit dewatering well to wear concrete of basement bottom plate closure sealing construction processing method, comprises the following steps：Making sealing steel sleeve → pour basement bottom board blinding concrete → cutting bedding plane dewatering well filter pipe, water-stopping steel its lower end twines interior insertion dewatering well filter pipe after Bituminous hemp fiber, and shut → basement bottom board bedding plane construction of waterproof layer → colligation concrete floor reinforcing bar with cement mortar stuff up a crack, lasting precipitation → pour basement bottom board concrete, continue precipitation → dewatering well and terminate precipitation → closure dewatering well one by one.The present invention use double-vane ring sealing steel sleeve, insertion precipitation well head, and well head plugging structure is simple, scientific and reasonable, safe and reliable, water-stagnating effect is good, precipitation requirement when can adapt to basement construction of bottom plates difference operating mode very well；Solve the precipitation demand in basement reinforced concrete floor work progress, and solve terminate to wear concrete of basement bottom plate its dewatering well sealing closure problem during precipitation well.
Description
Technical field
The present invention relates to deep basal pit foundation construction field, and in particular to a kind of base pit dewatering well is worn concrete floor closure and stopped
Water construction treating methods.
Background technology
With the rapid development of economic construction of China, all kinds of public buildings and high residential building are increasing, its deep base
The planar dimension in hole is increasing, substantially carries out deep foundation pit precipitation using the construction method of deep-well precipitation in hole at present.And
The plugging construction technology of base pit dewatering well is a key point in whole foundation construction, and it directly influences base pit dewatering well
The waterproof quality of water-stagnating effect and sole plate concrete, so as to influence to the construction of underground chamber base, this gives basement coagulation
The closure that precipitation and precipitation during native construction of bottom plates terminate rear well head brings new difficulty and challenge.
Publication No. CN104711994A documents 1 disclose a kind of foundation-pit deep-well precipitation and plugging construction method,
Using wellhead sealing steel plate and coating steel pipe, connection pulsating pump is absorbed water；Closing sealing is carried out using the valve on steel pipe, is solved
Certainly plugging dewatering well problem, but do not solve valve, water suction steel pipe and sole plate concrete combination problem, and water check valve is wrapped in back
In packing course, after long-time, because of pipe fitting corrosion, well head infiltration risk be present.Publication No. CN101148884B documents 2 are public
The waterproof and plugging construction method of a kind of precipitation well in foundation pit have been opened, has been entered using steel sleeve, ring flange, connecting bolt, rubber ring
Row closure well head, solves precipitation waterproof and closure problem, but does not solve the connectivity problem between steel sleeve and precipitation well head, more
Do not solve the problems, such as the combination between dewatering well, steel sleeve, sole plate further, it is difficult to reach well head sealing and waterproof requirement.
Publication No. CN204059380U documents 3 disclose in a kind of underground garage foundation ditch deep-well precipitation well head well-sealing device and
Method, it is enclosed on using the steel cylinder of seal ring inside and outside band on well head, it is suitable for reading to seal steel bushing with steel plate, reaches closure precipitation well head mesh
, solve deep-well precipitation well head shut-in well problem in foundation ditch, but sealing link is more, process is more, construction is complicated and need to also be in raft plate
On the basis of doughnut-shaped steel plate waterstop is set, how the gap do not explained between clear steel bushing and well head outer wall to be handled, and infiltration be present
Hidden danger.Publication No. CN103556644A documents 4 disclose a kind of basement bottom board dewatering well well head closure sleeve pipe and
Construction method, using the steel cylinder with ring flange, it is placed on well head, first fixes steel cylinder with concrete, then covers flange sealing
Water, solves dewatering well well head closure problem, but the working pit for the steel cylinder height that need to backbreak first pours concrete and fixes steel cylinder, volume
It is outer to add foundation engineering amount, and sealing steel cylinder combined with pipe well it is not close.
At present dewatering well frequently with sealing method for blocking as described in above-mentioned patent searching, that is, wearing the drop of concrete floor
The steel pipe that draws water is put into well, at well head（Typically in bottom plate lower position）Flange and gate valve are set, and sealing is closed when blocking
Gate valve, the steel pipe that draws water of excision gate valve upper end, substantial amounts of standard is not only needed using underplate concrete by its environmental sealing, this method
Tubing, difficulty of construction is larger, needs professional plumber's construction, and the concrete bottom plate at the position is thickeied downwards, changes bottom plate knot
Structure, it adds additional construction cost.
The content of the invention
The technical problem to be solved in the present invention is, for deficiencies of the prior art, there is provided a kind of base pit dewatering
Well wears concrete of basement bottom plate closure sealing construction processing method, and basement bottom board dewatering well uses double-vane ring sealing steel bushing
Pipe, it is good to be inserted directly into progress sealing closure, plugging dewatering well construction is simple, water-stagnating effect in precipitation well head.
The present invention is that technical scheme is used by solving above-mentioned technical problem：
Base pit dewatering well wears concrete of basement bottom plate closure sealing construction processing method, comprises the following steps：
S1, make sealing steel sleeve；
S2, pour basement bottom board blinding concrete；
S3, after pouring basement bottom board blinding concrete, before construction of waterproof layer and concrete floor reinforcing bar colligation,
The dewatering well filter pipe being higher by more than basement bottom board mat surface is cut off, in water-stopping steel outside of sleeve lower end winding pitch fiber crops
Silk, and shut with cement mortar stuff up a crack, the sealing steel sleeve for winding Bituminous hemp fiber is placed in dewatering well filter pipe；Sealing
Twice water-proof wing-ring, water-stopping steel cannula tip absolute altitude are higher by basement bottom board top surface 400mm, sealing up and down for welding on the outside of steel sleeve
Steel sleeve lower end and dewatering well filter pipe lap of splice 600mm；
S4, in mounted water-stopping steel ferrule boot and basement bottom board junction with 1：2 cement mortar plugs are real, and surrounding is smeared
Into arc-shaped, basement bottom board bedding plane construction of waterproof layer is carried out, pours pea gravel concreten fish tail and waterproof layer；
S5, colligation concrete floor reinforcing bar, continue precipitation；
S6, basement bottom board concrete is poured, continue precipitation；
S7, dewatering well terminate precipitation one by one；
S8, closure dewatering well.
By such scheme, the size of sealing steel sleeve is φ 273mm × 6mm in the step S3.
By such scheme, upper and lower twice water-proof wing ring width 200mm in the step S3, upper track water-proof wing-ring is away from basement bottom
Plate top surface 100mm, lower road water-proof wing-ring is away from basement bottom board bottom surface 150mm.
By such scheme, in the step S5 when concrete floor reinforcing bar meets sealing steel pipe socket, concrete floor reinforcing bar
Bypassed from periphery, at the same it is another plus four with diameter reinforcing bar, bend about 200mm with diameter reinforcing bar one end and welded with sealing steel pipe socket,
The other end is horizontal and horizontal length is no less than 1.0m.
By such scheme, when it is determined that during closure dewatering well in the step S8, first under basement bottom board top surface at 80mm
Sealing steel sleeve is cut off, filled with dewatering well dry powder inserts to sealing steel sleeve lower port position, then with basement bottom
Plate is filled up to being poured onto under basement bottom board top surface at 80mm with the microdilatancy concrete of label, is welded with 6mm thickness sealing steel sleeve lamina tectis,
Finally poured with C30 microdilatancy concretes flat.
By such scheme, dewatering well dry powder inserts is cement in the step S8:Sand is 1:1 mixture.
The operation principle of the present invention：After sole plate concrete bed course is poured, before construction of waterproof layer, by water-stopping steel outside of sleeve
Lower end winds Bituminous hemp fiber, inserts in downcast well pipe, with cement mortar plug reality sealing steel sleeve surrounding and smears into arc-shaped；Then
Construction waterproof layer, assembling reinforcement, until pouring underplate concrete；Basement construction is complete can stop precipitation when, using sand, water
Mud, microdilatancy concrete block to dewatering well, effectively carry out sealing closure to dewatering well.
Compared with prior art, the beneficial effects of the invention are as follows：
1st, the present invention uses double-vane ring sealing steel sleeve, inserts the construction in precipitation well head as the closure of dewatering well sealing and arranges
Apply, well head plugging structure is simple, scientific and reasonable, safe and reliable, water-stagnating effect is good, can adaptively descend the different constructions of chamber base very well
Precipitation requirement during operating mode, solve the problems, such as that the valve in documents 1, water suction steel pipe and sole plate concrete do not combine very well
It is wrapped in water check valve in backfill layer, after long-time, because of pipe fitting corrosion, the problem of well head infiltration risk is present；
2nd, the gap filling Bituminous hemp fiber and cement between dewatering well and steel sleeve, that is, blocked steel sleeve and dewatering well
Between gap, secure sealing steel sleeve again, be easy to the installation of sealing steel sleeve and the construction of concrete floor, solve pair
The problem of being difficult to reach well head sealing and waterproof requirement than the connection between the steel sleeve in file 2 and precipitation well head；
Double water-proof wing-rings, pipe on Bituminous hemp fiber, sealing steel sleeve between 3 while utilization sealing steel sleeve and dewatering well
The multiple measures of preventing water collective effects such as interior filling concrete, that is, solve the precipitation demand in concrete floor work progress, and very well
Ground, which solves, to be terminated to wear concrete floor dewatering well sealing closure problem during precipitation, and is had very with basement bottom board bed course waterproof layer
It is good to combine, the construction of waterproof layer is not influenceed, solves that seal ring section in documents 3 is more, process is more, construction is complicated, need to also be
The problem of doughnut-shaped steel plate waterstop is set on raft foundation, also solves steel cylinder working pit of being backbreak in documents 4, adds basis
Quantities, and sealing steel cylinder is combined untight problem with pipe well.
Brief description of the drawings
Fig. 1 is that dewatering well well head sealing of the present invention blocks double-vane ring sealing steel sleeve processing dimension figure；
Dewatering well wears concrete bottom plate water stop construction method figure when Fig. 2 is precipitation state construction of bottom plates of the present invention；
Dewatering well wears concrete bottom plate water stop construction method figure when Fig. 3 terminates precipitation shut-in well for the present invention；
In figure, 1, sealing steel sleeve, 2, dewatering well filter pipe, 3, Bituminous hemp fiber, 4, cement mortar, 5, basement bottom board pad
Layer, 6, waterproof layer, 7, concrete floor reinforcing bar, 8, dewatering well dry powder inserts, 9, microdilatancy concrete, 10, sealing steel sleeve top cover
Plate, 11, C30 microdilatancy concretes, 12, upper water-proof wing-ring, 13, lower water-proof wing-ring.
Embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
Base pit dewatering well of the present invention wears concrete of basement bottom plate closure sealing construction processing method, including as follows
Step：Making sealing steel sleeve 1 → pour basement bottom board blinding concrete → cutting bedding plane dewatering well filter pipe 2, sealing
The lower end of steel sleeve 1 twines interior insertion dewatering well filter pipe 2 after Bituminous hemp fiber 3, and shuts → basement bottom board with the stuff up a crack of cement mortar 4
Bedding plane waterproof layer 6 is constructed → colligation concrete floor reinforcing bar 7, continues precipitation → pour basement bottom board concrete, continue precipitation →
Dewatering well terminates precipitation → closure dewatering well one by one.
Specific workflow is as follows：
S1, make sealing steel sleeve 1：According to the sealing steel bushing of the double-vane ring for being used for the closure of dewatering well sealing shown in Fig. 1
The processing dimension of pipe 1 makes sealing steel sleeve 1（φ273mm×6mm）；
S2, pour the concrete of basement bottom board bed course 5；
S3, after the concrete of basement bottom board bed course 5 is poured, waterproof layer 6 construct and the colligation of concrete floor reinforcing bar 7 it
Before, the dewatering well filter pipe 2 being higher by more than the surface of basement bottom board bed course 5 is cut off, wound in the outside lower end of sealing steel sleeve 1
Bituminous hemp fiber 3, and shut with the stuff up a crack of cement mortar 4（Sealing is wiped one's face）, the sealing steel sleeve 1 for winding Bituminous hemp fiber 3 is laid
In dewatering well filter pipe 2；Twice water-proof wing-ring, water-proof wing ring width 200mm, weld seam will up and down for the welding of the outside of sealing steel sleeve 1
It is full, must not seamed crazing line, upper water-proof wing-ring 12 is away from basement bottom board top surface 100mm, and lower road water-proof wing-ring 13 is away from basement
Bottom plate bottom surface 150mm, the elevation of top of sealing steel sleeve 1 are higher by basement bottom board top surface 400mm, the lower end of sealing steel sleeve 1 and drop
The lap of splice 600mm of well filter pipe 3；
S4, in the mounted root of sealing steel sleeve 1 and basement bottom board junction with 1：2 cement mortar 4 fill in reality, surrounding
Arc-shaped is smeared into, basement bottom board bedding plane waterproof layer 6 is carried out and constructs, pour pea gravel concreten fish tail and waterproof layer；
S5, colligation concrete floor reinforcing bar 7, continue precipitation：When concrete floor reinforcing bar 7 meets sealing steel pipe socket 1, coagulation
Native baseplate reinforcing bar 7 is bypassed from periphery, while separately adds four with diameter reinforcing bar, and about 200mm and sealing are bent with diameter reinforcing bar one end
Steel pipe socket 1 welds, and horizontal length horizontal with the diameter reinforcing bar other end is no less than 1.0m；
S6, basement bottom board concrete is poured, continue precipitation；
S7, dewatering well terminate precipitation one by one；
S8, closure dewatering well：When it is determined that closure dewatering well when, first under basement bottom board top surface at 80mm by sealing steel bushing
Pipe 1 is cut off, with the cement mixed:Sand is 1:1 dewatering well dry powder inserts 8 is filled to the lower port position of sealing steel sleeve 1,
Filled up again with basement bottom board with the microdilatancy concrete 9 of label to being poured onto under basement bottom board top surface at 80mm, be welded with 6mm thickness and stop
Water steel sleeve lamina tecti 10, finally poured with C30 microdilatancies concrete 11 flat.
The above-described right model for being only presently preferred embodiments of the present invention, the present invention can not being limited with this certainly
Enclose, dimensions length when especially constructing can be changed according to different basement bottom board demands adapt to optimum state completely, therefore
The equivalence changes made according to scope of the present invention patent, still belong to protection scope of the present invention.
Claims (5)
1. base pit dewatering well wears concrete of basement bottom plate closure sealing construction processing method, it is characterised in that including following step
Suddenly：
S1, make sealing steel sleeve；
S2, pour basement bottom board blinding concrete；
S3, after pouring basement bottom board blinding concrete, before construction of waterproof layer and concrete floor reinforcing bar colligation, by height
The dewatering well filter pipe excision gone out more than basement bottom board mat surface, Bituminous hemp fiber is wound in water-stopping steel outside of sleeve lower end,
The sealing steel sleeve for winding Bituminous hemp fiber is placed in dewatering well filter pipe；The welding of water-stopping steel outside of sleeve up and down stop by twice
Hydrofoil ring, upper and lower twice water-proof wing ring width 200mm, upper track water-proof wing-ring is away from basement bottom board top surface 100mm, lower road water-proof wing-ring
Away from basement bottom board bottom surface 150mm；Water-stopping steel cannula tip absolute altitude is higher by basement bottom board top surface 400mm, under sealing steel sleeve
End and dewatering well filter pipe lap of splice 600mm；
S4, in mounted water-stopping steel ferrule boot and basement bottom board junction with 1：2 cement mortar plugs are real, and surrounding smears into circle
Arcuation, basement bottom board bedding plane construction of waterproof layer is carried out, pours pea gravel concreten fish tail and waterproof layer；
S5, colligation concrete floor reinforcing bar, continue precipitation；
S6, basement bottom board concrete is poured, continue precipitation；
S7, dewatering well terminate precipitation one by one；
S8, closure dewatering well.
2. base pit dewatering well according to claim 1 wears concrete of basement bottom plate closure sealing construction processing method, its
It is characterised by, the size of sealing steel sleeve is φ 273mm × 6mm in the step S3.
3. base pit dewatering well according to claim 1 wears concrete of basement bottom plate closure sealing construction processing method, its
It is characterised by, in the step S5 when concrete floor reinforcing bar meets sealing steel pipe socket, concrete floor reinforcing bar bypasses from periphery,
It is simultaneously another to add four with diameter reinforcing bar, welded with diameter reinforcing bar one end bending 200mm with sealing steel pipe socket, the other end is in horizontal
Shape and horizontal length is no less than 1.0m.
4. base pit dewatering well according to claim 1 wears concrete of basement bottom plate closure sealing construction processing method, its
Be characterised by, in the step S8 when it is determined that closure dewatering well when, first under basement bottom board top surface at 80mm by sealing steel bushing
Pipe cut off, filled with dewatering well dry powder inserts to sealing steel sleeve lower port position, then with basement bottom board with label
Microdilatancy concrete is filled up to being poured onto under basement bottom board top surface at 80mm, is welded with 6mm thickness sealing steel sleeve lamina tectis, is finally used C30
Microdilatancy concrete pours flat.
5. base pit dewatering well according to claim 4 wears concrete of basement bottom plate closure sealing construction processing method, its
It is characterised by, dewatering well dry powder inserts is cement in the step S8:Sand is 1:1 mixture.
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| CN105951859B true CN105951859B (en) | 2018-04-10 |
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| CN105951859A (en) | 2016-09-21 |
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