CN203546742U - Construction device for pre-lowering confined water in deep foundation pit - Google Patents
Construction device for pre-lowering confined water in deep foundation pit Download PDFInfo
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- CN203546742U CN203546742U CN201320720765.3U CN201320720765U CN203546742U CN 203546742 U CN203546742 U CN 203546742U CN 201320720765 U CN201320720765 U CN 201320720765U CN 203546742 U CN203546742 U CN 203546742U
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Abstract
The utility model relates to a construction device for pre-lowering confined water in a deep foundation pit. The construction device comprises a water filter shaft, a water exhaust device and a soil grabbing digging device, wherein the water exhaust device and the soil grabbing digging device are arranged in the water filter shaft, the soil grabbing digging device comprises a soil grabbing digger and a hoisting steel wire rope fixed to the end portion of the soil grabbing digger, the hoisting steel wire rope is connected to a motor through a pulley on a machine frame of the soil grabbing digging device, and the motor is provided with a switch control cabinet with a leakage protection function. According to the construction device, what is needed is to use an improved waste oil barrel and the small-diameter soil grabbing digger so as to form holes of a pre-lowering confined water well point system through a pre-sedimentation shaft, the construction procedure is simplified, a slurry ditch and a slurry pit are needless on site, construction land is saved, and construction is safe and environmentally friendly.
Description
Technical field
The utility model relates to the pre-dewatering confined water construction equipment of a kind of deep foundation ditch, belongs to building lot and Foundation Design technical field.
Background technology
At present, deep foundation ditch falls draining and mainly adopts light well point, eductor well point, electro-osmosis well point, pipe well well point and deep-well well point to carry out draining, but all shortcomings of various degrees of draining fall in these deep foundation ditchs, as:
Light well point, eductor well point and electro-osmosis well point are only applicable to the soil layer of coefficient of permeability K=0.1 ~ 50m/d, for falling under row's complex geological condition, are imbedded between the water barrier of two continuous distributed and having of being full of completely presses the condition of underground water just cannot meet; Though can fall the soil layer of row coefficient of permeability K=10 ~ 250m/d for pipe well well point and deep-well well point, also exist following some shortcomings part:
(1) hole forming method: drainage plant → try out, fall draining falls in well location setting-out → installation casing (steel casing or plan analysis) → rig (slewing drilling machine, percussive drill, diving drill machine, long-spiral drilling machine) → boring → backfill shaft bottom in place sand cushion → lay well casing → backfill well tubular wall and hole wall sand, stone filter material → lay.This complex technical process, pore-forming progress is slow;
(2) mud off pore-forming needs spoil disposal ditch, mud sump, mud outward transport, the waste of construction land tenure area, and Construction on Environment is polluted large.
(3) cast iron pipe, concrete pipe, plastic pipe and the cage of reinforcement that pipe well system main material is 200 ~ 350mm by diameter, wire gauze, sand and gravel material form, and Construction Cost is high, and collecting water from runoff is low.
Summary of the invention
The purpose of this utility model is: for defect and the deficiency of prior art, provide that a kind of hole forming method is simple, construction cost reduces, construction land tenure saving, construction safety, environmental protection, the pre-dewatering confined water construction equipment of a kind of deep foundation ditch and method thereof that dewatering effect is good.
For achieving the above object, the technical solution adopted in the utility model is:
The pre-dewatering confined water construction equipment of a kind of deep foundation ditch described in the utility model, comprise that drainage plant and punching in drainage pit shaft and drainage pit shaft grab shoveling equipment, punching is grabbed shoveling equipment and is comprised that punching is grabbed digging device and is fixed on punching and grab the hoist rope of digging device end, the pulley that hoist rope is grabbed in digging device frame by punching is connected on motor, is furnished with the switch control box of creepage protection function on motor; Wherein, described drainage plant comprises the outlet pipe of submersible pump and submersible pump end, and the pump head of submersible pump is provided with steel bracket; The barrel surrounding of described drainage pit shaft is welded with respectively three bell socket devices and girth member, and have some filter bores in a side of barrel, the inner and outer wall that is provided with the drainage pit shaft of filter bores is respectively equipped with wire gauze, and the lower end of drainage pit shaft is provided with steel sword pin.
In the utility model: described drainage pit shaft be by Ф 580mm steel waste oil bucket, through cutting, removed barrel at the bottom of, the pit shaft that volume is pressed into.
In the utility model: described girth member is reinforcement patches rib.
In the utility model: it is that digging device is grabbed in minor diameter punching that digging device is grabbed in described rushing, and it opens diameter Ф 350mm.
The pre-dewatering confined water construction method of deep foundation ditch, comprises the following steps:
(1) construction is surveyed again, well location setting-out; Comprise the following steps:
A. determine the excavation of foundation pit degree of depth and foundation ditch surrounding enviroment;
B. determine excavation safe plans;
C. by theory, calculate the parameter of foundation pit dewatering, propose underground latent water, the control measure of artesian water and quantity and the installation position of definite foundation ditch preliminary sedimentation pit shaft;
D. take foundation ditch and position setting-out; First make drainage pit shaft, secondly according to construction, survey again definite installation position and position setting-out;
(2) shoveling pore-forming is grabbed in digging device punching, and carries out mounting shaft cylinder; Drainage pit shaft merogenesis is grabbed and is cut the earth with punching in well, and every sinking one joint pit shaft increases by a joint pit shaft thereon, when well-sinking does not meet the demands, can take well-flushing and pressurization measure to well bore wall;
(3) well-flushing; With compressed air well-flushing or with hanging cylinder upper and lower pulling eye well-flushing repeatedly;
(4) install and fall drainage plant, precipitation trial run;
(5) precipitation operation; Precipitation operation is worked in coordination with pit earthwork excavation, guarantees that in Excavation Process, the interior groundwater table of foundation ditch keeps certain position;
(6) shut-in well.
Adopt after said method, the utility model beneficial effect is:
(1) only need grab digging device with the waste oil bucket of changing a social system and minor diameter punching and can complete pre-dewatering confined water well point system pore-forming by preliminary sedimentation pit shaft, thereby saved the construction cost of steel casing and gritting material, saved the material price differential of waste oil bucket and cast iron pipe, concrete pipe; Its medium-small diameter punching is grabbed digging device pore-forming and is compared with mud off pore-forming, has saved especially construction cost, and has simplified construction sequence;
(2) construction sequence is simplified, on-the-spot without mud ditch and mud sump are set, and saves construction land tenure, construction safety, environmental protection, green construction;
(3) Construction Cost is low, and dewatering effect is good.
[accompanying drawing explanation]
Accompanying drawing described herein is to be used to provide further understanding of the present utility model, forms the application's a part, but does not form to improper restriction of the present utility model, in the accompanying drawings:
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of the utility model drainage pit shaft;
Fig. 3 is the top view of the utility model drainage pit shaft;
Fig. 4 is the sectional view of 1-1 in the utility model Fig. 3.
In figure: 1. drainage pit shaft; 2. reinforcement patches rib; 3. bell socket device; 4. filter bores; 5. submersible pump; 6. steel bracket; 7. outlet pipe; 8. steel sword pin; 9. digging device is grabbed in punching; 10. hoist rope; Digging device frame is grabbed in 11. punchings; 12. pulleys; 13 motors; 14. switch control boxes.
[specific embodiment]
Below in conjunction with accompanying drawing and specific embodiment, describe the utility model in detail, illustrative examples wherein and explanation are only used for explaining the utility model, but not as to restriction of the present utility model.
As shown in Fig. 1,2,3 and 4, the pre-dewatering confined water construction equipment of a kind of deep foundation ditch, comprise that drainage plant and punching in drainage pit shaft 1 and drainage pit shaft 1 grab shoveling equipment, punching is grabbed shoveling equipment and is comprised that punching grabs digging device 9 and be fixed on the hoist rope 10 that digging device 9 ends are grabbed in punching, the pulley 12 that hoist rope 10 is grabbed in digging device frame 11 by punching is connected on motor 13, is furnished with the switch control box 14 of creepage protection function on motor 13; Wherein, described drainage plant comprises the outlet pipe 7 of submersible pump 5 and submersible pump 5 ends, and the pump head of submersible pump 5 is provided with steel bracket 6; The barrel surrounding of described drainage pit shaft 1 is welded with respectively three bell socket devices 3 and girth member, and have some filter bores 4 in a side of barrel, the inner and outer wall that is provided with the drainage pit shaft 1 of filter bores 4 is respectively equipped with wire gauze, and the lower end of drainage pit shaft 1 is provided with steel sword pin 8.Described drainage pit shaft 1 be by Ф 580mm steel waste oil bucket, through cutting, removed barrel at the bottom of, the pit shaft that volume is pressed into; Described girth member is reinforcement patches rib 2; Described punching grabbed digging device 9 and grabbed digging device for minor diameter punching, and it opens diameter Ф 350mm.The pre-dewatering confined water construction method of deep foundation ditch, comprises the following steps:
(1) construction is surveyed again, well location setting-out; Comprise the following steps:
A. determine the excavation of foundation pit degree of depth and foundation ditch surrounding enviroment; According to report of engineering geological exploration hydrogeological conditions, should construct and survey again, construction prospecting scope is determined according to the excavation of foundation pit degree of depth and foundation ditch surrounding enviroment;
B. determine excavation safe plans; Wherein, non-support structure foundation ditch should calculate through stability of slope respectively by different soil, determine different soil grade of side slope, as fold-line-shaped, put slope excavation, have supporting and protection structure foundation ditch to determine respectively supporting and protection structure pattern according to surrounding enviroment, cutting depth, engineering geology and hydrogeology, execution conditions;
C. by theory, calculate the parameter of foundation pit dewatering, underground latent water, the control measure of artesian water and quantity and the installation position of definite foundation ditch preliminary sedimentation pit shaft are proposed, and be labeled on construction plan, and to place in construction area show clearly, clear obstruction, build intercept water facility and construction machinery and material are provided and meet operation requirements of interim sidewalk and Po Ding;
D. take foundation ditch and position setting-out; Pit earthwork excavation adopts plane subregion, the balanced excavation downwards of vertical layered method, while digging to underground latent water face, arrange mechanical precipitation to fall in advance underground water, while digging to artesian water top water barrier, need to arrange pre-dewatering confined water equally, wherein pit earthwork shoveling must be with digging with transporting, and interim mound toe is determined through stability calculation by the degree of depth of digging pit, grade of side slope and soil property classification in hole back gauge;
Take in the process of foundation ditch and make drainage pit shaft simultaneously, according to layout quantity and the degree of depth of pre-heavy cylinder, choose Ф 580mm steel waste oil bucket, cutting is pressed into pit shaft through pulleying at the bottom of removing barrel; Secondly according to construction, survey again definite preliminary sedimentation pit shaft installation position and position setting-out;
(2) shoveling pore-forming is grabbed in digging device punching, and carries out mounting shaft cylinder; Drainage pit shaft merogenesis is grabbed and is cut the earth with punching in well, and every sinking one joint pit shaft increases by a joint pit shaft thereon, when well-sinking does not meet the demands, can take well-flushing and pressurization measure to well bore wall;
Wherein, punching is grabbed excavation and construction and is looped, and operation is also the action being cycled to repeat, and each circulation is divided into five steps, and method of operating is as follows:
The first step: unhook undershoot is grabbed digging device; Pull clutch handle, making punching grab digging device slightly rises about 10cm, the holdback clutch that brakes immediately, then slowly loosens brake, makes punching grab digging device and slowly declines, three hooks have been jumped out punching and have been grabbed digging device, digging device can leave to hang and unload device unhook, and digging device just slowly puts down it after breaking off relations, to suitably control drum speed with brake, make digging device slow and steady and be lowered in wellbore hole;
Second step: impact; Digging device, from the bottom of hole during 1 ~ 2m, is totally released brake, and its freely falling body is impacted, impact good after, that checks immediately reel does not make the reel reversion steel cable that scatters too many;
The 3rd step: grab soil and promote; After impact, grab immediately fixed handle, make reel forward, wire rope rises, and at this moment down-hole digging device just can first complete blade closure and grab soil action, and then whole digging device rises, as rope clutch rests in switching mechanism, do not propose, illustrate that blade does not have closure, should again descend digging device to impact;
The 4th step: hook; More than digging device rises to aperture, encounter automatic hanging and unload device, extension is unloaded to guide housing on device up to be pushed up, three hooks enter in hanger automatically, at this moment just can also brake by holdback clutch, then put down digging device very slowly, allow digging device hang on hook by sleeve flange, when just tangling digging device, check brake, wait dolly and unload soil;
The 5th step: unload soil; After hook is hung surely by digging device, just unearthed dolly is moved under digging device, then loosen brake, be convenient to digging device and rely on counterweight forces to open blade, soil is discharged in dolly.Pull open the dolly impact of can again breaking off relations, carry out next one circulation;
(3) well-flushing; With compressed air well-flushing or with hanging cylinder upper and lower pulling eye well-flushing repeatedly;
(4) install and fall drainage plant, precipitation trial run; With wire rope, water pump is hung in pit shaft, the steel bracket of Φ 16 reinforcement fabrications is established in water pump bottom, and trys this equipment out, should check that water outlet is normal without silting up between trial run period, and whether gearing, electric current, voltage be normal, and whether lift meets the demands;
(5) precipitation operation; Precipitation operation is worked in coordination with pit earthwork excavation, guarantee in Excavation Process that the interior groundwater table of foundation ditch is lower than excavation face 0.5m, pit shaft is removed pit shaft section by section with the increase of the excavation of foundation pit degree of depth, in precipitation running, inspection draw water phenomenon whether normal, have or not and silt up, the precipitation apparatus fault occurring that is in operation should be processed in time or be repaired; At mozzle periphery, first fill out the thick concrete shut-in well of 0.2-0.3m, concrete strength reaches after 15Mpa, pricks envelope mozzle, and then connecting reinforcement is installed, and builds shut-in well concrete; Steel concrete polycrystalline substance has been constructed, and polycrystalline substance also checks through stability, while meeting the demands, can shunt in a well.
(6) shut-in well; Before shut-in well, slowly hang out water pump, remove top pit shaft, by New-old concrete contact surface dabbing, rinse well, insert the PVC filter pipe in peripheral band hole in pit shaft, filter pipe periphery is filled out with sandstone, and pvc pipe top connects PVC flexible pipe and makes mozzle
The above is only better embodiment of the present utility model, and the equivalence of doing according to structure, feature and principle described in the utility model patent claim therefore all changes or modifies, and is included in the utility model patent claim.
Claims (4)
1. the pre-dewatering confined water construction equipment of deep foundation ditch, it is characterized in that: comprise that drainage plant and punching in drainage pit shaft and drainage pit shaft grab shoveling equipment, punching is grabbed shoveling equipment and is comprised that punching is grabbed digging device and is fixed on punching and grab the hoist rope of digging device end, the pulley that hoist rope is grabbed in digging device frame by punching is connected on motor, is furnished with the switch control box of creepage protection function on motor; Wherein, described drainage plant comprises the outlet pipe of submersible pump and submersible pump end, and the pump head of submersible pump is provided with steel bracket; The barrel surrounding of described drainage pit shaft is welded with respectively three bell socket devices and girth member, and have some filter bores in a side of barrel, the inner and outer wall that is provided with the drainage pit shaft of filter bores is respectively equipped with wire gauze, and the lower end of drainage pit shaft is provided with steel sword pin.
2. the pre-dewatering confined water construction equipment of a kind of deep foundation ditch according to claim 1, is characterized in that: described drainage pit shaft be by Ф 580mm steel waste oil bucket, through cutting, removed barrel at the bottom of, the pit shaft that volume is pressed into.
3. the pre-dewatering confined water construction equipment of a kind of deep foundation ditch according to claim 1, is characterized in that: described girth member is reinforcement patches rib.
4. the pre-dewatering confined water construction equipment of a kind of deep foundation ditch according to claim 1, is characterized in that: it is that digging device is grabbed in minor diameter punching that digging device is grabbed in described rushing, and it opens diameter Ф 350mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320720765.3U CN203546742U (en) | 2013-11-15 | 2013-11-15 | Construction device for pre-lowering confined water in deep foundation pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320720765.3U CN203546742U (en) | 2013-11-15 | 2013-11-15 | Construction device for pre-lowering confined water in deep foundation pit |
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| Publication Number | Publication Date |
|---|---|
| CN203546742U true CN203546742U (en) | 2014-04-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320720765.3U Withdrawn - After Issue CN203546742U (en) | 2013-11-15 | 2013-11-15 | Construction device for pre-lowering confined water in deep foundation pit |
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| CN (1) | CN203546742U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103628491A (en) * | 2013-11-15 | 2014-03-12 | 南京振高建设有限公司 | Deep foundation pit pre-drop confined water construction device and method |
-
2013
- 2013-11-15 CN CN201320720765.3U patent/CN203546742U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103628491A (en) * | 2013-11-15 | 2014-03-12 | 南京振高建设有限公司 | Deep foundation pit pre-drop confined water construction device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140416 Effective date of abandoning: 20150708 |
|
| RGAV | Abandon patent right to avoid regrant |