CN206319329U - A kind of water-stop curtain constructing device - Google Patents
A kind of water-stop curtain constructing device Download PDFInfo
- Publication number
- CN206319329U CN206319329U CN201621427248.7U CN201621427248U CN206319329U CN 206319329 U CN206319329 U CN 206319329U CN 201621427248 U CN201621427248 U CN 201621427248U CN 206319329 U CN206319329 U CN 206319329U
- Authority
- CN
- China
- Prior art keywords
- drilling rod
- whitewashing
- jet
- water
- stop curtain
- 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.)
- Expired - Fee Related
Links
Landscapes
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The utility model provides a kind of water-stop curtain constructing device, including the whitewashing drilling rod and jet drilling rod vertically set, whitewashing drilling rod and jet drilling rod are hollow structure, the lower end of whitewashing drilling rod and jet drilling rod is provided with drill bit, and it is additionally provided with connection drilling rod inner chamber and outside spray orifice on whitewashing drilling rod and the side wall of jet drilling rod lower end or on drill bit, the upper end of whitewashing drilling rod and jet drilling rod is additionally provided with the drive device for driving drilling rod to rotate.To solve the problem of traditional cement mixing method technology has potential safety hazard, overcome the shortcomings of that conventional art is present well.The utility model belongs to technical field of building construction.
Description
Technical field
The utility model is related to a kind of new and effective Choice of Construction Technique of Water Stop Curtain, belongs to technical field of building construction.
Background technology
Leakage of Foundation Pit issue concerns the construction safety of base pit engineering, and water-stop curtain is control base pit engineering underground water seepage
Major measure.Water-stop curtain extensive use in base pit engineering, traditional cement mixing method skill are done with cement mixing method
Art Mechanization Level is low, and overlap joint quality is difficult to ensure that between every width stake stake, easily causes Leakage of Foundation Pit, there is certain potential safety hazard.
The content of the invention
The purpose of this utility model is：A kind of water-stop curtain constructing device is provided, to solve traditional Soil-cement
The problem of stake technology has potential safety hazard, overcomes the shortcomings of that conventional art is present well.
To solve the above problems, intend using such a water-stop curtain constructing device, including the whitewashing vertically set to bore
Bar and jet drilling rod, whitewashing drilling rod and jet drilling rod are hollow structure, and the lower end of whitewashing drilling rod and jet drilling rod is provided with
Connection drilling rod inner chamber and outside spray are additionally provided with drill bit, and whitewashing drilling rod and the side wall of jet drilling rod lower end or on drill bit
The upper end of hole, whitewashing drilling rod and jet drilling rod is additionally provided with the drive device for driving drilling rod to rotate.
In aforementioned means, totally three, the drilling rod of whitewashing, totally two, jet drilling rod, whitewashing drilling rod and jet drilling rod are alternately
It is arranged side by side；
In aforementioned means, horizontal level of the horizontal level higher than whitewashing drilling rod lower end of jet drilling rod lower end.
The utility model additionally provides a kind of waterproof curtain construction method, including：
Step one：Installing intersection and stake position setting-out
Smooth, compacting is carried out to construction site, ground underground obstacle is removed, to facilitate equipment movement in place, verified and clear
Except underground obstacle, backfill is needed for silt soil strata, back-filling in layers compacting then, water stop curtain structure is released by figure
Axis, sets up interim control stake, control point is checked daily in work progress, and carry out effective protection；
Step 2：Excavate guiding storage and stay ditch
Using 0.4m3~1m3Excavator excavates working channel, when meeting underground obstacle, and big face is carried out using large-scale digging machine
Product, which is deep-cut, is removed obstacles, and is finished until removing obstacles, and then backfill is compacted, and groove is excavated again；
Step 3：Positioning
The constructing device is moved on into finger fixed pile centering, two-way adjustment stake machine perpendicularity, pile foundation vertical missing is not more than
2 ‰, it is ensured that drilling rod shaft core is in place not partially, 4 10# channel-section steels depth 1.5m are driven underground in groove both sides as fixed pivot, vertically
Groove direction is placed two H profile steels and is spot welded with branch, and specification is 200 × 200, is about 2.5m；
Step 4：Prepare cement mortar,
Slurries enter the configuration of tank storehouse, stirring, injection overall process intellectualized operation from bulk cement, improve the ratio of mud, cement
The degree of accuracy of incorporation, cement mortar flow key index, improves mixing pile pile quality.
Step 5：Lower to bore stirring and whitewash, lower brill reaches designing pile length
Start totally-enclosed full-automatic mixing-filling system, realize the totally-enclosed of cement mortar mixing process, eliminate dust
Pollution, the people of recruitment 1 ~ 2 can be reduced per machine-team by often covering system, started and sent stock pump, slurries is sprayed from the spray orifice of whitewashing drilling rod lower end
And with drilling stirring after certain pressure, is started, while sending slurry pump pressure according to test pile result adjustment, it is ensured that whitewashing amount is met will
Ask, the direction of rotation between rotating shaft is each other on the contrary, to realize that the control of whitewashing amount is the 70% of total amount, in drilling process from steady balance
Continuous to spray into cement grout, drilling was to designing pile length original place whitewashing stirring 30 seconds, if midway pipeline blockage occurs and stopped more than 30
During minute, grouting pump and slurries transfer pipeline should be cleaned immediately, prevent slurry consolidation.
Step 6：Above propose drilling rod stirring and whitewash, above mention up to stake top
Stirring-head is inverted at the uniform velocity lifting stirring from stake end, cement grout is continuously sprayed into, up to ground, the control of whitewashing amount is
The 30% of total amount, the size of grouting amount is monitored by the speed regulator mounted in operating desk and automatic instantaneous velocity meter and flow quantity recorder, is bored
Head is promoted to behind ground, and reversely drilling is stirred again immediately, during stirring again, and local not enough pile body position of whitewashing is mended
Slurry, and prevent that mouth spray from blocking.
Operation principle：Configure and set respectively inside five hollow drill pipes, three drilling rod whitewashings, two drilling rod jets, drilling rod
There are whitewashing passage and jet channel, drilling rod front end is provided with gunniting hole, make full use of drilling rod as shotcrete pipe, swivel joint connection
Grouting Pipe, slurries pass through the agitation force and compressed gas of drill bit and drilling rod blade by being injected into by Grouting Pipe in drilling rod
Body is equably stirred to the cutting force of the soil body to foundation soil, is thoroughly mixed soil cement, forms continuous soil cement
Wall is used as water-stop curtain.
Compared with prior art, the utility model preferably solves the construction safety technology such as water seal for deep foundation pit curtain seepage
Problem, technique is advanced, globality, impermeability, good stability, intellectuality, environmental protection, reduces input and the workman of labor and materials machine
Workload, shortens the duration, reduces construction costs, and the probability that reduction security incident occurs greatly reduces security incident
Generation, so as to improve level of security, reached expected research effect, be from now on water-stop curtain construction be particularly similar weak soil
Regional Extra-Deep Foundation Pit construction provides important foundation.Whole formation of pile digitlization, can store, can be widely applied to underground empty
Between in the Choice of Construction Technique of Water Stop Curtain developed.
Brief description of the drawings
Fig. 1 is the structural representation of the constructing device；
Fig. 2 is five axle mixing pile intensity with different soil depth change curve figure.
Embodiment
, below will be by accompanying drawing to utility model to make the purpose of this utility model, technical scheme and advantage clearer
It is described in further detail.
Embodiment：
With reference to Fig. 1 and 2, the present embodiment provides a kind of water-stop curtain constructing device, including three whitewashings vertically set
Drilling rod 1 and two jet drilling rods 2, whitewashing drilling rod 1 and jet drilling rod 2 are alternately arranged side by side, whitewashing drilling rod 1 and jet drilling rod 2
It is hollow structure, the lower end of whitewashing drilling rod 1 and jet drilling rod 2 is provided with drill bit 3, and whitewashing drilling rod 1 and jet drilling rod 2
Connection drilling rod inner chamber and outside spray orifice 4, the horizontal level of the lower end of jet drilling rod 2 are additionally provided with the side wall at end or on drill bit 3
Higher than the horizontal level of whitewashing drilling rod 1 lower end, the upper end of whitewashing drilling rod 1 and jet drilling rod 2 is additionally provided with for driving drilling rod to turn
Dynamic drive device 5.
Exemplified by positioned at Minhang District, Shanghai engineering project, 9.29 ten thousand square metres of construction area, foundation ditch area 2.16 ten thousand
Square metre, 658 meters of girth, generally 2 layers basement, excavation of foundation pit depth is 8.8 ~ 12.5 meters, and foundation pit enclosure form is using brill
The axle of hole pouring pile earth-retaining+five stirring pile water stopping curtain+two road reinforced concrete support（Local one of bracing members）.
One, construction parameters are designed：
Cement mortar match ratio takes 1.5：1, using 42.5 grades of Portland cements, cement density is 3t/m3, soil body density
Take 1.8t/m3, cement mortar proportion is 1.36kg/L, and mixing pile reference area takes 2.42 m2.The axle mixing pile of diameter phi 800 5 is overlapped
Length 300mm, subsidence velocity takes 0.8m/min, and lifting speed takes 1.2m/min, drill bit every revolution lifting or sinking amount with 10 ~
15mm is advisable.0.5 ~ 1.0MPa of grouting pressure；Reinforcing body 28d unconfined compressive strengths are not less than 0.8MPa.
Every width stake cement consumption=mixing pile reference area × effective length × soil body density × cement amount of participating in.
Two, construction technologies：
1. installing intersection：Smooth, compacting is carried out to construction site, ground underground obstacle is removed, to facilitate equipment movement just
Position, is verified and removes underground obstacle, and backfill, back-filling in layers compacting are needed for silt soil strata.
2. a position setting-out：Water stop curtain structure axis is released by figure, interim control stake is set up, it is right daily in work progress
Control point is checked, and carries out effective protection.
Ditch is stayed 3. excavating and being oriented to storage：Using 0.4m3~1m3Excavator excavates working channel.When meeting underground obstacle, make
Large area is carried out with large-scale digging machine deep-cutting to remove obstacles, finished until removing obstacles, then backfill is compacted, and groove is excavated again.
4. positioning：Five axle mixers move on to finger fixed pile centering, and two-way adjustment stake machine perpendicularity, pile foundation vertical missing is little
In 2 ‰, it is ensured that drilling rod shaft core is not in place inclined.4 10# channel-section steels depth 1.5m are driven underground in groove both sides as fixed pivot, hang down
Straight flute direction is placed two H profile steels and is spot welded with branch, and specification is 200 × 200, is about 2.5m.
5. cement mortar is prepared：Slurries enter the configuration of tank storehouse, stirring, injection overall process intellectualized operation from bulk cement, improve
The ratio of mud, cement mixed weight, the degree of accuracy of cement mortar flow key index, improve mixing pile pile quality.
6. filling system：With totally-enclosed full-automatic mixing-filling system, the totally-enclosed of cement mortar mixing process is realized, is disappeared
Except dust pollution, the people of recruitment 1 ~ 2 can be reduced per machine-team by often covering system.
7. lower bore stirring and whitewash：Start and send stock pump, slurries spray and had after certain pressure from nozzle, start drilling and stir
Mix, while sending slurry pump pressure according to test pile result adjustment, it is ensured that whitewashing amount, which is met, to be required.Direction of rotation between rotating shaft phase each other
Instead, can be from surely balancing, the control of whitewashing amount is the 70% of total amount.
8. lower brill reaches designing pile length：It is continuous in drilling process to spray into cement grout, drilling to designing pile length original place spray
Slurry stirring 30 seconds.If midway pipeline blockage stopping occurred more than 30 minutes, grouting pump and slurries transfer pipeline should be entered immediately
Row cleaning, prevents slurry consolidation.
9. above propose drilling rod stirring and whitewash：Stirring-head is inverted at the uniform velocity lifting stirring from stake end, cement grout is continuously sprayed into,
Until ground, the control of whitewashing amount is the 30% of total amount, and the size of grouting amount is by the speed regulator mounted in operating desk and automatic instantaneous velocity
Meter and flow quantity recorder monitoring.
10. on mention up to stake top：Drill bit is promoted to behind ground, should reversely be crept into and be stirred again immediately, during stirring again, reply
The pile body position that local whitewashing is not enough carries out benefit slurry, and prevents that mouth spray from blocking.
Three, construction monitoring results：
1. engineering time and work efficiency
The long 18.5m of cement mixing method, stake footpath φ 800, every 20 minutes width pile driving construction used times, stirring construction 8 minutes, telephone-moving
12 minutes, its work efficiency was 42.24m3/h。
2. a core detected intensities
The mixing pile that scene randomly selects 2% carries out core boring sampling, check mixing pile into pile length and uniformity.Every
Stake coring quantity should not be less than at 5 points to be taken on the different depth in the long scope of full stake continuously drilled through and different soil stake core,
And sample point, every 3 test blocks should be set near Foundation Pit bottom.Slip casting is answered to fill in space after the completion of boring and coring.
3. water-stagnating effect
There is no obvious EXIT POINT through observing water-stop curtain, after testing coefficient of permeability K=3.6 of 2 layers of native position soil cement ×
10-6Cm/s, coefficient of permeability K=9.2 × 10 of 3 layers of native position soil cement-6Cm/s, the coefficient of permeability K of 4 layers of native position soil cement=
1.6×10-6Cm/s, is fully achieved the performance requirement of water-stop curtain.
4. the native discharge rate of displacement
12% ~ 16%, eliminate Double shaft stirring stake, three axes agitating pile displacement soil and measure big defect.
5. labour configures
Every people of five axle mixer configuration machine hand 1, slurrying and the people of filling system 1, the people of measuring point locating personnel 1, commanding 1
People.
6. deformation monitoring result
Maximum horizontal displacement 25mm at Guan Liang, deeply mixing cement-soil pile maximum point is located at excavation face, there is 38mm.
The four, scope of applications and application prospect：
Foundation ditch peripheral water stopping curtain is constructed using Novel five-axis mixing pile technology in certain project construction, every in work progress
Machine-team is operated by 4 skilled workers and Pu works, and the average width of daily pile about 15, efficiency of construction is high.This project earth excavation is finished,
Upon examination it is found that fender post pile body surface is more dried, foundation ditch ne-leakage phenomenon, and construction safety is secure, in work progress
Any security incident is not found, and application effect is preferable.The foundation ditch peripheral water stopping curtain that this technology is applied to high building project is applied
Work, is also widely used in the artificial deep-foundation pit engineering of multilayer, Super High and complicated geology.
Five, conclude the speech
Compared with conventional art, it is difficult that this technology preferably solves the construction safety such as water seal for deep foundation pit curtain seepage technology
Topic, technique is advanced, and globality, impermeability, good stability, intellectuality, environmental protection reduce the input and workman's work of labor and materials machine
Measure, shorten the duration, reduce construction costs, the probability that reduction security incident occurs greatly reduces security incident
Occur, so as to improve level of security, reached expected research effect, be that water-stop curtain is constructed with being particularly similar weak soil from now on
Area's Extra-Deep Foundation Pit construction provides important foundation.Whole formation of pile digitlization, can store, can be widely applied to the underground space
In the Choice of Construction Technique of Water Stop Curtain of exploitation.
Claims (3)
1. a kind of water-stop curtain constructing device, it is characterised in that：Including the whitewashing drilling rod vertically set（1）With jet drilling rod
（2）, drilling rod of whitewashing（1）With jet drilling rod（2）Hollow structure is, drilling rod of whitewashing（1）With jet drilling rod（2）Lower end be respectively provided with
There is drill bit（3）, and whitewashing drilling rod（1）With jet drilling rod（2）On the side wall of lower end or drill bit（3）On be additionally provided with connection drilling rod in
Chamber and outside spray orifice（4）, drilling rod of whitewashing（1）With jet drilling rod（2）Upper end be additionally provided with for drive drilling rod rotate drive
Dynamic device（5）.
2. a kind of water-stop curtain constructing device according to claim 1, it is characterised in that：The whitewashing drilling rod（1）Totally three,
Jet drilling rod（2）Totally two, drilling rod of whitewashing（1）With jet drilling rod（2）Alternately it is arranged side by side.
3. a kind of water-stop curtain constructing device according to claim 1, it is characterised in that：Jet drilling rod（2）The level of lower end
Position is higher than whitewashing drilling rod（1）The horizontal level of lower end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621427248.7U CN206319329U (en) | 2016-12-23 | 2016-12-23 | A kind of water-stop curtain constructing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621427248.7U CN206319329U (en) | 2016-12-23 | 2016-12-23 | A kind of water-stop curtain constructing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206319329U true CN206319329U (en) | 2017-07-11 |
Family
ID=59259467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621427248.7U Expired - Fee Related CN206319329U (en) | 2016-12-23 | 2016-12-23 | A kind of water-stop curtain constructing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206319329U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109024643A (en) * | 2018-08-09 | 2018-12-18 | 中国地质大学（北京） | A kind of water-stop curtain constructing device, equipment and waterproof curtain construction method |
-
2016
- 2016-12-23 CN CN201621427248.7U patent/CN206319329U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109024643A (en) * | 2018-08-09 | 2018-12-18 | 中国地质大学（北京） | A kind of water-stop curtain constructing device, equipment and waterproof curtain construction method |
| CN109024643B (en) * | 2018-08-09 | 2023-06-09 | 中国地质大学（北京） | Waterproof curtain construction device, equipment and waterproof curtain construction method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106638643A (en) | Water-stopping-curtain construction device and method | |
| CN102943466B (en) | Construction method for miniature steel pipe concrete pile to penetrate through roadbed layer for reinforcing soft foundation construction | |
| CN106759297A (en) | A kind of construction method of support pile and three pipe high-pressure rotary jet grouting pile deep basal pits | |
| CN111396067B (en) | Comprehensive shield steel sleeve receiving construction method in complex environment | |
| CN108643948B (en) | Construction method for shield to penetrate anchor cable area | |
| CN203452083U (en) | Rotary expanding pile construction equipment and grout feeding device | |
| CN105155550B (en) | Construction method for digging deep foundation pit in large-thickness highly weathered sandstone stratum in combined supporting mode | |
| CN111119940B (en) | Grouting construction treatment method | |
| CN108517877B (en) | Supporting construction method combining consolidation grouting of hybrid filling ultra-deep foundation pit with double-row steel pipe piles | |
| CN109595004B (en) | Tunnel two-expansion four-expansion excavation method | |
| CN111577136A (en) | High-pressure jet grouting pile hole guiding construction integrated device and construction method thereof | |
| CN108590706A (en) | One kind being used for speciality single-track railway tunnel drifter with booms Construction Techniques of Grouting in Heavy Curtain | |
| CN107299633A (en) | A kind of utilization High-pressure Spiral Spray Technology improves the construction method of the bearing capacity of stake | |
| CN106284295A (en) | Multichannel high-pressure vibro-grouting jet groutinl construction method | |
| CN108265706A (en) | Engineering pile in karst cave geology and pile forming process | |
| CN1986974A (en) | Pressure reducing horizontal reinforcing process for soft soil layer | |
| CN111501781A (en) | Supporting method and structure combining consolidation grouting of hybrid filling ultra-deep foundation pit with double rows of steel pipe piles | |
| CN107338789A (en) | A kind of construction method of down-the-hole percussion triple-pipe high pressure jet grouting stake | |
| CN110593254A (en) | Construction method of cast-in-situ bored pile in stratum with karst cave in joint zone | |
| CN108842764B (en) | Rotary stirring type anchor pipe construction method | |
| CN114319388A (en) | Construction method of foundation pit enclosure structure in existing building in karst area | |
| CN212671560U (en) | High-pressure jet grouting pile hole guiding construction integrated device | |
| CN213233469U (en) | Triaxial down-the-hole impact high-pressure jet grouting equipment | |
| CN206319329U (en) | A kind of water-stop curtain constructing device | |
| CN112252310A (en) | Method for deep foundation pit waterproof curtain construction by adopting high-pressure jet grouting pile machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170711 Termination date: 20171223 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |