CN108166517A - For the shut-in well method and well-sealing device of superelevation floor height hydraulic pressure dewatering well of deep well - Google Patents
For the shut-in well method and well-sealing device of superelevation floor height hydraulic pressure dewatering well of deep well Download PDFInfo
- Publication number
- CN108166517A CN108166517A CN201810137930.XA CN201810137930A CN108166517A CN 108166517 A CN108166517 A CN 108166517A CN 201810137930 A CN201810137930 A CN 201810137930A CN 108166517 A CN108166517 A CN 108166517A
- Authority
- CN
- China
- Prior art keywords
- well
- water
- drainpipe
- dewatering well
- water shutoff
- Prior art date
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000007789 sealing Methods 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 134
- 238000003466 welding Methods 0.000 claims abstract description 31
- 238000007569 slipcasting Methods 0.000 claims abstract description 16
- 238000012360 testing method Methods 0.000 claims abstract description 15
- 239000011083 cement mortar Substances 0.000 claims abstract description 11
- 230000000903 blocking effect Effects 0.000 claims abstract description 5
- 238000005266 casting Methods 0.000 claims abstract description 5
- 239000004568 cement Substances 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 238000005070 sampling Methods 0.000 claims abstract description 5
- 239000002002 slurry Substances 0.000 claims abstract description 5
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 9
- 239000011248 coating agent Substances 0.000 claims description 7
- 238000000576 coating method Methods 0.000 claims description 7
- 239000011247 coating layer Substances 0.000 claims description 6
- 230000008595 infiltration Effects 0.000 claims description 6
- 238000001764 infiltration Methods 0.000 claims description 6
- 238000005086 pumping Methods 0.000 claims description 6
- 230000009194 climbing Effects 0.000 claims description 4
- 239000003351 stiffener Substances 0.000 claims description 4
- 230000015271 coagulation Effects 0.000 claims 1
- 238000005345 coagulation Methods 0.000 claims 1
- 238000010276 construction Methods 0.000 description 11
- 230000001070 adhesive effect Effects 0.000 description 10
- 235000019353 potassium silicate Nutrition 0.000 description 10
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 10
- 239000000853 adhesive Substances 0.000 description 9
- 229910000831 Steel Inorganic materials 0.000 description 7
- 239000010959 steel Substances 0.000 description 7
- 239000000463 material Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 230000002421 anti-septic effect Effects 0.000 description 2
- 230000001680 brushing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000009189 diving Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910001335 Galvanized steel Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000008397 galvanized steel Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 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
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
- E02D15/04—Placing concrete in mould-pipes, pile tubes, bore-holes or narrow shafts
Abstract
The invention discloses a kind of shut-in well methods and well-sealing device for superelevation floor height hydraulic pressure dewatering well of deep well, and wherein method is including being：Water shutoff plate and seamless welding Grouting Pipe, drainpipe and casing on the water shutoff plate are made according to dewatering well internal diameter；While immersible pump draw water operation, by water shutoff plate full weld in dewatering well；After weld seam cooling, immersible pump and quick blocking Grouting Pipe, drainpipe and casing are closed, whether observation commissure seeps water；Grouting Pipe is opened again after commissure is impermeable to carry out high-pressure slip-casting into dewatering well and open drainpipe draining；After thick cement mortar of emerging in drainpipe, test block first is made to the thick cement mortar sampling emerged and blocks drainpipe, test block is used the equal conditions with cement slurry sets thick in dewatering well to conserve by Grouting Pipe voltage stabilizing slip casting to setting value；After test block reaches setting intensity, casting concrete is shunt in a well on water shutoff plate.Present invention shut-in well quality is high, shut-in well excellent in efficiency, at low cost, energy-saving and environment friendly of shunting in a well.
Description
Technical field
It is deep for superelevation floor height hydraulic pressure the present invention relates to a kind of well-filling techniques field of dewatering well of deep well more particularly to one kind
The shut-in well method and well-sealing device of well dewatering well.
Background technology
With the development of urban construction, building basement depth is continuously increased, and foundation pit is just increasingly deeper, to base pit dewatering
It is required that also higher and higher, less than requiring, foundation pit is easy for occurring dangerous water level drop.And dewatering well is exactly to be beaten for lowering of watertable
Well, water pump groundwater abstraction is put into after having beaten, reduces the water level of underground water, be ensure foundation pit smooth construction common measure it
One.But for superelevation floor height hydraulic pressure dewatering well of deep well, because dewatering well bore is big, water level is high, water gushes phenomena such as speed is fast
In the presence of closure difficulty is huge.
It is effectively blocked to solve the above problems, realizing, conventional method is：First the water in dewatering well is discharged with immersible pump,
Reach setting value to precipitation waterline；Then, it closes and abandons immersible pump, be rapidly injected into dewatering well by water glass adhesive, profit
Gradually blocked with the rapid hardening of the water glass adhesive, reduce dewatering well draining bore to bore be zero；Finally, it is welded in dewatering well well head
Water shutoff cover board is connect, completes to block.
Though the above method can efficiently solve the closure problem of superelevation floor height hydraulic pressure dewatering well of deep well, asked there are following
Topic：
1st, water glass adhesive effect rapid hardening waterproofing agent is relied primarily on to stop gushing out for high pressure water, rate of set must quickly, one
As for a few minutes, therefore while being used on building site, must accomplish, i.e. with i.e. use, efficient site operation speed to be needed, to staff's
It is it is required that high.
2nd, while water glass adhesive condenses, water level in dewatering well still can quick high-pressure rise, water glass adhesive is rushed
It is huge to hit dynamics, water glass adhesive division isolation is caused to be splashed to staff, security risk is big.
3rd, under the impact of high pressure water level, the condensation shape of water glass adhesive is the thin inverted concave in both sides thickness center, works as top
For the welding of water shutoff cover board not entirely there are during gap, the high pressure water in dewatering well can not be in static state, can gradually hit water glass adhesive
Weakness, the lighter's infiltration, severe one washes water shutoff cover board water burst open, since water glass adhesive and water shutoff cover board have been placed on dewatering well well
Mouthful, road can not be added to block again above, substantially belong to a construction operation, it is poor to block durability for the possibility do not remedied.
4th, for common cement mortar, the environmental-protecting performance of water glass adhesive is low, price higher.
Invention content
The purpose of the present invention is to provide a kind of at low cost, durables, energy-saving and environment friendly, easy for construction for surpassing
The shut-in well method and well-sealing device of high floor height hydraulic pressure dewatering well of deep well.
This shut-in well method for superelevation floor height hydraulic pressure dewatering well of deep well provided by the invention, includes the following steps：
（1）, according to dewatering well internal diameter make water shutoff plate, seamless welding Grouting Pipe, drainpipe and casing on the water shutoff plate；
（2）, by casing by water shutoff sleeve-board mounted in immersible pump suction hose on, which is put into dewatering well and is taken out
Water operation, and ensure that the pumping rate of immersible pump is more than the climbing speed of water level in dewatering well；
（3）, while immersible pump draw water operation, by step（1）The water shutoff plate full weld of middle making is in dewatering well；
（4）, after weld seam cooling, close immersible pump and quick blocking Grouting Pipe, drainpipe and casing, whether observation commissure oozes
Water；
（5）, as seeped water, open casing and open immersible pump and continue operation of drawing water, and repair welding processing is carried out, then weigh in infiltration position
Multiple step（4）；As impermeable, open Grouting Pipe and high-pressure slip-casting is carried out into dewatering well and opens drainpipe draining；
（6）, after thick cement mortar of emerging in drainpipe, test block first is made to the thick cement mortar sampling emerged and blocks draining
Test block is used the equal conditions with cement slurry sets thick in dewatering well to support by pipe, Grouting Pipe voltage stabilizing slip casting to setting value
Shield；
（7）, after test block reach setting intensity after, on water shutoff plate casting concrete shunt in a well.
To improve plugging dewatering well overall durability, realize the purpose of zero leakage, two are at least made according to dewatering well internal diameter
A seal plate, treats step（7）Described in capping operation after the completion of, by seal plate between the upper and lower every full weld in dewatering well well head
It is interior.
For convenience of practicality, hook is set in described sleeve pipe, in the step（4）It will diving while middle closing immersible pump
The suction hose and cable of pump fetch that be placed on hook upper spare.
To improve the durability of water shutoff plate, in the step（7）In, first water shutoff plate is carried out using flexible waterproof coating complete
Seal treatment, then pour the impervious pea gravel concreten shut-in well of microdilatancy.
In the step（3）In, it need to treat that water level line is dropped at well head at least 450mm in dewatering well, then is being dived under water
Pump draw water operation while, by step（1）The water shutoff plate full weld of middle making in dewatering well apart from 260~330mm of well head
Place.
The present invention also provides a kind of well-sealing device for implementing above-mentioned shut-in well method, including seamless welding in dewatering well
Water shutoff plate is welded with Grouting Pipe, casing and drainpipe on the water shutoff plate, is respectively mounted in the upper end of the Grouting Pipe and drainpipe
There is control valve, water shutoff block is connected in described sleeve pipe screw top, concrete layer has been poured on the water shutoff plate.
For the durability of raising water shutoff plate, flexible waterproof coating layer is painted between the water shutoff plate and concrete layer,
The concrete layer uses the impervious pea gravel concreten of microdilatancy.
For convenience of practicality, hook is equipped in described sleeve pipe.
To ensure water sealing effect, circumferentially uniform welding has several triangles between the water shutoff plate and the inner wall of dewatering well
Stiffener.
To ensure water sealing effect, closure block is threaded at the top of the Grouting Pipe and drainpipe.
Compared with prior art, the present invention has the following advantages：
1st, the immersible pump that pumping rate is selected to be more than rate of rise in dewatering well draws water, to water shutoff while drawing water
Plate carries out welding procedure, you can meets the requirement that water shutoff plate is welded in well, can be carried out above water shutoff plate according to actual needs
Add and block, applicability is stronger；Construction object can be avoided to fly out under the impact of high pressure water dewatering well again, injure staff by a crashing object, pacified
Full performance is more preferable.
2nd, welding procedure, the casting concrete shut-in well construction on water shutoff plate are carried out to water shutoff plate while drawing water, is
Conventional form of construction work, does not need to particular production at the construction field (site), does not need to efficient site operation speed, environmental-protecting performance is high,
Price is low, and the requirement to staff is low.
3rd, after water shutoff plate is completed in welding, Grouting Pipe, casing and drainpipe can be immediately closed, makes Static Water is presented in well, with
Hydraulic pressure increases, and examines weldquality, it is ensured that does not occur leakage scenarios and carries out high-pressure slip-casting again, ensures the durable of water shutoff plate.
The configuration of the present invention is simple, easy to operate, shut-in well quality height, shut-in well excellent in efficiency, at low cost, green energy conservation ring of shunting in a well
It protects.
Description of the drawings
Fig. 1 is mounting structure schematic diagram of the present invention for the well-sealing device of superelevation floor height hydraulic pressure dewatering well of deep well.
Fig. 2 is schematic cross-sectional view at A-A in Fig. 1.
Fig. 3 is the present invention for the structure diagram after superelevation floor height hydraulic pressure dewatering well of deep well shut-in well.
The label and corresponding component name shown in figure be：
1st, dewatering well；2nd, water shutoff plate；3rd, Grouting Pipe；4th, casing；5th, drainpipe；6th, control valve；7th, water shutoff block；8th, concrete
Layer；9th, flexible waterproof coating layer；10th, it links up with；11st, triangle stiffener；12nd, seal plate；13rd, block is blocked；14th, immersible pump draws water
Hose；15th, cable.
Specific embodiment
This shut-in well method for superelevation floor height hydraulic pressure dewatering well of deep well of the invention, includes the following steps：
（1）, water shutoff plate made according to dewatering well internal diameter, three through-holes are opened up on the water shutoff plate and corresponding seamless welding regulation is long
Grouting Pipe, drainpipe and the casing of degree；
（2）, by casing by water shutoff sleeve-board mounted in immersible pump suction hose on, which is put into dewatering well and is taken out
Water operation, and ensure that the pumping rate of immersible pump is more than the climbing speed of water level in dewatering well；
（3）, when water level line in dewatering well is dropped at well head at least 450mm, draw water operation reduction in immersible pump
While water level, first weld steel sleeve is dried up using hair dryer, then by step（1）The water shutoff plate of middle making passes through no seam weld
The mode connect is welded in dewatering well at 260~330mm of well head, wherein, it is desirable that slip casting nozzle distance from bottom shaft bottom 500mm
Left and right, in view of pad is normally at deeper subsurface room, space is smaller, need to use two air blast machine operations, an air-supply, it is ensured that
Weld fresh air supplies, an air draft, it is ensured that the gas generated during welding arranges in time, and welder is avoided to suck welding
The exhaust gas of generation；
（4）, after weld seam cooling, close immersible pump and quick blocking Grouting Pipe, drainpipe and casing, whether observation commissure oozes
Water；
（5）, as seeped water, open casing and open immersible pump and continue operation of drawing water, and repair welding processing is carried out, then weigh in infiltration position
Multiple step（4）；As impermeable, open Grouting Pipe and high-pressure slip-casting is carried out into dewatering well and opens drainpipe to dewatering well draining；
（6）, after thick cement mortar of emerging in drainpipe, test block first is made to the thick cement mortar sampling emerged and blocks draining
Pipe, while Grouting Pipe is blocked by the pressure value that Grouting Pipe voltage stabilizing slip casting to slip casting machine is set again, by test block use and dewatering well
The equal conditions of interior thick cement slurry sets are conserved；
（7）, after test block reach setting intensity after, drainpipe is again turned on, if blocking drainpipe again after not occurring percolating water；If it deposits
In percolating water, then after carrying out closure processing by Grouting Pipe high-pressure injection polyurethane grouting material, then drainpipe and Grouting Pipe are blocked；
Finally casting concrete is shunt in a well on water shutoff plate.
To prevent water shutoff plate subtle infiltration caused by construction time length, aging as first of water stopping function, improve
Plugging dewatering well overall durability realizes the purpose of zero leakage of dewatering well position, in the present invention can also be according to dewatering well internal diameter
Two seal plates are at least made, treat above-mentioned steps（7）After the completion of middle capping operation, by seal plate by way of seamless welding on
Lower interval is welded in dewatering well well head.
Pumping action is carried out using same immersible pump for convenience of when weld seam seeps water, cost is reduced, is provided in casing
Hook, in step（4）The suction hose of immersible pump and cable can be fetched and are placed on hook while middle closing immersible pump
It is spare.
It in the present invention, can first brushing flexible waterproof coating carries out totally-enclosed place on water shutoff plate after completing slip casting work
It manages, then the concrete realization shut-in well of the impervious microlith of microdilatancy is poured on flexible waterproof coating, so as to improve water shutoff plate durability.
It can be seen that the present invention also provides a kind of shut-in wells for superelevation floor height hydraulic pressure dewatering well of deep well from Fig. 1 to Fig. 3
Device, including water shutoff plate 2, Grouting Pipe 3, casing 4 and drainpipe 5,2 seamless welding of water shutoff plate is sealing on the inner wall of dewatering well 1
Opened on water plate 2 there are three with 5 corresponding through-hole of Grouting Pipe 3, casing 4 and drainpipe, Grouting Pipe 3 through corresponding through-hole and with
2 seamless welding of water shutoff plate, casing 4 and 5 seamless welding of drainpipe dock above water shutoff plate 2 and with corresponding through-hole, in slip casting
The upper end of pipe 3 and drainpipe 5 is mounted on a control valve 6, a water shutoff block 7 is connected in 4 screw top of casing, in water shutoff plate
2 tops are painted with flexible waterproof coating layer 9, and the concrete layer 8 of the impervious microlith of microdilatancy is filled on the flexible waterproof coating.
Can also be seen that from Fig. 1 to Fig. 3 be equipped in the casing 4 of the present invention for hang immersible pump on immersible pump draw water it is soft
The hook 10 of pipe 14 and cable 15 has between the inner wall of water shutoff plate 2 and dewatering well 1 along the circumferential uniform welding of dewatering well 1
Several triangle stiffeners 11, at least seamless welding is there are two seal plate 12 in the dewatering well 1 above concrete eight, in Grouting Pipe 3
It is threaded with 5 top of drainpipe and blocks block 13.
In the present invention, water shutoff plate 2 and seal plate 12 are made of 6mm steel plates, and Grouting Pipe 3 is plated by the DN25 of 3mm wall thickness
Zinc steel pipe is made, and casing 4 is made of the DN150 coating steel pipes of 3mm wall thickness, drainpipe 5 by 3mm wall thickness DN15 galvanized steel control
Into there are two control valves 6 and the pipe well copper ball valve of respectively DN25 and DN15, and diving pump lift not less than 50 meters, put more energy by triangle
Plate 11 is made of 10mm steel plates.
In the present invention, the shut-in procedures that superelevation floor height hydraulic pressure dewatering well of deep well is carried out using above-mentioned well-sealing device are as follows：
1st, preparation of construction：
A, material, equipment prepare：
Electric welding machine one；Oxygen-acetylene gas cutting machine, pump drainage wind turbine one；
B, personnel prepare：
Professional electrician one, electric welder one, auxiliary welder one, construction manager one, security official one；
2nd, by 1 internal diameter scene actual quantities size of dewatering well, molding is cut to size in water shutoff plate 2, is opened on water shutoff plate 2 by placement position
Through-hole simultaneously carries out antiseptic and rustproof processing to it；By the coating steel pipe of the DN25 of 3mm wall thickness, 150,15, length is respectively welded as requested
Grouting Pipe 3, casing 4 and drainpipe 5 are formed in 2 corresponding position of water shutoff plate, control valve 6 is installed in Grouting Pipe 3 and drainpipe 5,
The welding hook 10 in casing 4, all weld seams use carbon dioxide gas arc welding by professional welder, it is ensured that weld seam is full；
3rd, water shutoff plate 2 is sleeved on the suction hose 14 of immersible pump by casing 4, by the immersible pump be put into dewatering well 1 into
Capable operation of drawing water, and ensure that the pumping rate of immersible pump is more than the climbing speed of water level in dewatering well；
4th, when water level line in dewatering well is dropped at well head at least 450mm, the operation reduction water that draws water is carried out in immersible pump
While position, first weld steel sleeve is dried up using hair dryer, then by the water shutoff plate 2 made in above-mentioned steps 2 by seamless
The mode of welding is welded in dewatering well 1 at 260~330mm of well head, wherein, it is desirable that 3 mouthfuls of distance from bottom shaft bottoms of Grouting Pipe
500mm or so, in view of pad is normally at deeper subsurface room, space is smaller, need to use two air blast machine operations, one is sent
Wind, it is ensured that weld fresh air supplies, an air draft, it is ensured that the gas generated during welding arranges in time, avoids welder
The exhaust gas that sucking welding generates；
5th, after weld seam cooling, immersible pump is closed, the suction hose 14 of immersible pump and cable 15 are fetched and are placed on hook 10
It is upper spare, two control valve 6 of quick closedown and the water shutoff block 7 on casing 4 is screwed so as to block Grouting Pipe 3, drainpipe 5 and casing
4, whether observation commissure seeps water；
6th, it as seeped water, removes water shutoff block 7 and opens casing 4, take out the suction hose 14 and cable 15 in casing 4, open latent
Water pump continues operation of drawing water, and carries out repair welding processing in infiltration position, repeats above-mentioned steps 5；First to casing 4 if impermeable
And antiseptic and rustproof processing is done in water shutoff block 7, the DN25 that the direct connector of band of a 3mm wall thickness is threadedly coupled on drainpipe 5 is zinc-plated
Drainpipe, then the control valve 6 opened in Grouting Pipe 3 carry out high-pressure slip-casting into dewatering well 1, and open the control on drainpipe 5
Valve 6 is to 1 draining of dewatering well；
7th, until after thick cement mortar of emerging in drainpipe 5, test block and the row of closing first are made to the thick cement mortar sampling emerged
Control valve 6 on water pipe 5 blocks drainpipe 5, while the pressure value set by 3 voltage stabilizing slip casting of Grouting Pipe to slip casting machine, then closes
The control valve 6 closed in Grouting Pipe 3 blocks Grouting Pipe 3, by test block using the equal conditions with cement slurry sets thick in dewatering well
It is conserved；
8th, after test block reaches setting intensity, the control valve 6 that is again turned on drainpipe 5, if being turned off after not occurring percolating water
The control valve blocks drainpipe 5；If there are percolating water, carried out at closure by 3 high-pressure injection polyurethane grouting material of Grouting Pipe
After reason, turn off two control valves 6 and block drainpipe 5 and Grouting Pipe 3；Finally capping is covered above Grouting Pipe 3 and drainpipe 5
Cap 13, brushing flexible waterproof coating layer 9 carries out totally-enclosed processing on water shutoff plate 2, then pours on flexible waterproof coating layer 9 micro-
The concrete layer 8 for expanding impervious microlith is shunt in a well；
9th, at the well head 100mm apart from dewatering well 1, at 50mm between the upper and lower every the complete seal plate 12 of 2 pieces of seamless welding.
Claims (10)
- A kind of 1. shut-in well method for superelevation floor height hydraulic pressure dewatering well of deep well, it is characterised in that include the following steps：（1）, according to dewatering well internal diameter make water shutoff plate, seamless welding Grouting Pipe, drainpipe and casing on the water shutoff plate；（2）, by casing by water shutoff sleeve-board mounted in immersible pump suction hose on, which is put into dewatering well and is taken out Water operation, and ensure that the pumping rate of immersible pump is more than the climbing speed of water level in dewatering well；（3）, while immersible pump draw water operation, by step（1）The water shutoff plate full weld of middle making is in dewatering well；（4）, after weld seam cooling, close immersible pump and quick blocking Grouting Pipe, drainpipe and casing, whether observation commissure oozes Water；（5）, as seeped water, open casing and open immersible pump and continue operation of drawing water, and repair welding processing is carried out, then weigh in infiltration position Multiple step（4）；As impermeable, open Grouting Pipe and high-pressure slip-casting is carried out into dewatering well and opens drainpipe draining；（6）, after thick cement mortar of emerging in drainpipe, test block first is made to the thick cement mortar sampling emerged and blocks draining Test block is used the equal conditions with cement slurry sets thick in dewatering well to support by pipe, Grouting Pipe voltage stabilizing slip casting to setting value Shield；（7）, after test block reach setting intensity after, on water shutoff plate casting concrete shunt in a well.
- 2. the shut-in well method according to claim 1 for superelevation floor height hydraulic pressure dewatering well of deep well, it is characterised in that：According to Dewatering well internal diameter at least makes two seal plates, treats step（7）Described in capping operation after the completion of, by seal plate between the upper and lower every Full weld in dewatering well well head.
- 3. the shut-in well method according to claim 1 for superelevation floor height hydraulic pressure dewatering well of deep well, it is characterised in that：Institute Setting hook in casing is stated, in the step（4）The suction hose of immersible pump and cable are taken while middle closing immersible pump Return that be placed on hook upper spare.
- 4. the shut-in well method according to claim 1 for superelevation floor height hydraulic pressure dewatering well of deep well, it is characterised in that：Institute State step（7）In, totally-enclosed processing is first carried out, then pour the impervious microlith coagulation of microdilatancy to water shutoff plate using flexible waterproof coating Grave well.
- 5. the shut-in well method according to claim 1 for superelevation floor height hydraulic pressure dewatering well of deep well, it is characterised in that：Institute State step（3）In, it need to treat that water level line is dropped at well head at least 450mm in dewatering well, then carries out the work that draws water in immersible pump While industry, by step（1）The water shutoff plate full weld of middle making in dewatering well at 260~330mm of well head.
- 6. a kind of well-sealing device for implementing shut-in well method described in claim 1, it is characterised in that：Including seamless welding in dewatering well （1）Interior water shutoff plate（2）, Grouting Pipe is welded on the water shutoff plate（3）, casing（4）And drainpipe（5）, in the Grouting Pipe Control valve is mounted on the upper end of drainpipe（6）, water shutoff block is connected in described sleeve pipe screw top（7）, in the envelope Concrete layer has been poured on water plate（8）.
- 7. well-sealing device according to claim 6, it is characterised in that：It is painted between the water shutoff plate and concrete layer Flexible waterproof coating layer（9）, the concrete layer is using the impervious pea gravel concreten of microdilatancy.
- 8. well-sealing device according to claim 6, it is characterised in that：Hook is equipped in described sleeve pipe（10）.
- 9. well-sealing device according to claim 6, it is characterised in that：The edge between the water shutoff plate and the inner wall of dewatering well Circumferential uniform welding has several triangle stiffeners（11）.
- 10. well-sealing device according to claim 6, it is characterised in that：The equal screw thread at the top of the Grouting Pipe and drainpipe It is connected with closure block（13）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810137930.XA CN108166517B (en) | 2018-02-10 | 2018-02-10 | Well sealing method and well sealing device for super high-rise high-water pressure deep well dewatering well |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810137930.XA CN108166517B (en) | 2018-02-10 | 2018-02-10 | Well sealing method and well sealing device for super high-rise high-water pressure deep well dewatering well |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108166517A true CN108166517A (en) | 2018-06-15 |
| CN108166517B CN108166517B (en) | 2023-10-27 |
Family
ID=62513723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810137930.XA Active CN108166517B (en) | 2018-02-10 | 2018-02-10 | Well sealing method and well sealing device for super high-rise high-water pressure deep well dewatering well |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108166517B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109025899A (en) * | 2018-08-14 | 2018-12-18 | 北京天润建设有限公司 | A kind of well-sealing device |
| CN110043249A (en) * | 2019-05-06 | 2019-07-23 | 铜陵有色金属集团铜冠矿山建设股份有限公司 | A kind of vertical shaft constructs water shutoff layer monitoring device under water |
| CN110144918A (en) * | 2019-05-22 | 2019-08-20 | 四川童燊防水工程有限公司 | Hypogee dewatering well antiseepage plugging construction method |
| CN113174981A (en) * | 2021-04-23 | 2021-07-27 | 江苏固洲基础工程有限公司 | Plugging device of high water pressure deep well precipitation well |
| CN113356249A (en) * | 2021-05-18 | 2021-09-07 | 中铁十六局集团第一工程有限公司 | Dewatering well sealing device and dewatering well sealing method |
| CN113482026A (en) * | 2021-07-18 | 2021-10-08 | 中天建设集团有限公司 | Plugging method and device for pressure-bearing dewatering well |
| CN116024998A (en) * | 2023-03-16 | 2023-04-28 | 北京城建建设工程有限公司 | Construction method for water-sealing blocking of deep foundation pit dewatering well |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000314136A (en) * | 1999-05-06 | 2000-11-14 | Shimizu Corp | Cut-off wall-installing well and ground water treating mechanism |
| JP2007100401A (en) * | 2005-10-05 | 2007-04-19 | Izumi Pump Seisakusho:Kk | Undergroundwater level lowering apparatus |
| CN102797266A (en) * | 2012-08-31 | 2012-11-28 | 天津住宅集团建设工程总承包有限公司 | Well sealing waterproof construction method for dewatering well |
| CN103485352A (en) * | 2013-09-30 | 2014-01-01 | 上海建工七建集团有限公司 | Construction method for blocking depressurization well by adopting accelerated cement |
| CN105178342A (en) * | 2015-08-10 | 2015-12-23 | 中建八局第三建设有限公司 | Precipitation well casing and method for blocking reserved hole of foundation pit through precipitation well casing |
| CN206346209U (en) * | 2016-12-09 | 2017-07-21 | 中国一冶集团有限公司 | A kind of quick solution dewatering well piping plugging structure |
| CN107620312A (en) * | 2017-08-27 | 2018-01-23 | 中铁十二局集团有限公司 | High hydraulic pressure precipitation well construction and hydrostatic slip casting method for blocking in a kind of Metro station excavation |
-
2018
- 2018-02-10 CN CN201810137930.XA patent/CN108166517B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000314136A (en) * | 1999-05-06 | 2000-11-14 | Shimizu Corp | Cut-off wall-installing well and ground water treating mechanism |
| JP2007100401A (en) * | 2005-10-05 | 2007-04-19 | Izumi Pump Seisakusho:Kk | Undergroundwater level lowering apparatus |
| CN102797266A (en) * | 2012-08-31 | 2012-11-28 | 天津住宅集团建设工程总承包有限公司 | Well sealing waterproof construction method for dewatering well |
| CN103485352A (en) * | 2013-09-30 | 2014-01-01 | 上海建工七建集团有限公司 | Construction method for blocking depressurization well by adopting accelerated cement |
| CN105178342A (en) * | 2015-08-10 | 2015-12-23 | 中建八局第三建设有限公司 | Precipitation well casing and method for blocking reserved hole of foundation pit through precipitation well casing |
| CN206346209U (en) * | 2016-12-09 | 2017-07-21 | 中国一冶集团有限公司 | A kind of quick solution dewatering well piping plugging structure |
| CN107620312A (en) * | 2017-08-27 | 2018-01-23 | 中铁十二局集团有限公司 | High hydraulic pressure precipitation well construction and hydrostatic slip casting method for blocking in a kind of Metro station excavation |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109025899A (en) * | 2018-08-14 | 2018-12-18 | 北京天润建设有限公司 | A kind of well-sealing device |
| CN110043249A (en) * | 2019-05-06 | 2019-07-23 | 铜陵有色金属集团铜冠矿山建设股份有限公司 | A kind of vertical shaft constructs water shutoff layer monitoring device under water |
| CN110144918A (en) * | 2019-05-22 | 2019-08-20 | 四川童燊防水工程有限公司 | Hypogee dewatering well antiseepage plugging construction method |
| CN113174981A (en) * | 2021-04-23 | 2021-07-27 | 江苏固洲基础工程有限公司 | Plugging device of high water pressure deep well precipitation well |
| CN113174981B (en) * | 2021-04-23 | 2022-01-11 | 江苏固洲基础工程有限公司 | Plugging device of high water pressure deep well precipitation well |
| CN113356249A (en) * | 2021-05-18 | 2021-09-07 | 中铁十六局集团第一工程有限公司 | Dewatering well sealing device and dewatering well sealing method |
| CN113482026A (en) * | 2021-07-18 | 2021-10-08 | 中天建设集团有限公司 | Plugging method and device for pressure-bearing dewatering well |
| CN116024998A (en) * | 2023-03-16 | 2023-04-28 | 北京城建建设工程有限公司 | Construction method for water-sealing blocking of deep foundation pit dewatering well |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108166517B (en) | 2023-10-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108166517A (en) | For the shut-in well method and well-sealing device of superelevation floor height hydraulic pressure dewatering well of deep well | |
| CN104088254B (en) | Pressure-bearing reinforced concrete structure leakage repair device and construction method thereof | |
| CN107217691A (en) | For city underground leak stopping and the method for strengthening construction | |
| CN102797266B (en) | Well sealing waterproof construction method for dewatering well | |
| CN108517899A (en) | Mouth high-pressure grouting leak stopping processing method is buried in the leakage drilling of deep basal pit diaphram wall | |
| CN104711994A (en) | Foundation pit deep well rainfall and plugging construction method | |
| CN207193996U (en) | A kind of precipitation pipe well well-sealing device | |
| CN104963324B (en) | A kind of diversion tunnel block head exhaust structure and its method for exhausting | |
| CN107916945A (en) | Using the waterproof spray-up structure and its construction method of impervious gunite concrete | |
| CN202730786U (en) | Well-sealing waterproof construction structure of dewatering well | |
| CN207959289U (en) | Structure is repaired in a kind of leak for basement post-pouring zone position | |
| CN203977368U (en) | Pressure-bearing reinforced concrete structure leakage repair device | |
| CN106522217A (en) | Steel conduit device and broken pile treatment construction method for cast-in-situ bored pile | |
| CN212506349U (en) | Water-logging well sealing device for water-lowering zone of ultra-deep foundation pit pipe well | |
| CN203768925U (en) | Seal device for dewatering well in foundation pit | |
| CN206385557U (en) | The water-impervious plugging mechanism of dewatering well on deep basal pit raft plate | |
| CN110284908B (en) | Circumferential grouting plugging method in shield receiving well | |
| CN207904943U (en) | Well-sealing device for superelevation floor height hydraulic pressure dewatering well of deep well | |
| CN101979820A (en) | Process for sealing elevation drill hole water-stopping sleeves | |
| WO2018214143A1 (en) | Construction method for plugging dewatering well having penetrating bottom plate in foundation pit | |
| CN207003415U (en) | Air-cushion type batch vacuum pipe well | |
| CN114197508B (en) | Easy-to-seal water draining device, manufacturing method and using method thereof | |
| CN107338816A (en) | A kind of high artesian post-cast strip is depressured leak-blocking construction method | |
| CN205895309U (en) | Prevention of seepage water system for pitshaft driving | |
| CN210684746U (en) | Modified precipitation well plugging device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |