CN107489158A - A kind of spiral-digging pore stirs the construction method of water spray soil occlusion curtain pile - Google Patents
A kind of spiral-digging pore stirs the construction method of water spray soil occlusion curtain pile Download PDFInfo
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- CN107489158A CN107489158A CN201710870695.2A CN201710870695A CN107489158A CN 107489158 A CN107489158 A CN 107489158A CN 201710870695 A CN201710870695 A CN 201710870695A CN 107489158 A CN107489158 A CN 107489158A
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- 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
- E02D19/02—Restraining of open water
- E02D19/04—Restraining of open water by coffer-dams, e.g. made of sheet piles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2300/00—Materials
- E02D2300/0004—Synthetics
- E02D2300/0018—Cement used as binder
- E02D2300/0023—Slurry
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Piles And Underground Anchors (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention discloses the construction method that a kind of spiral-digging pore stirs water spray soil occlusion curtain pile.Its drip irrigation device is to include following construction procedure：Surveying and locating, rotary drilling rig is in place, water-seal pile drilling, is banketed in hole, pulping outside hole, and long-auger jet-grouting agitation driller is in place, sealing pile driving construction, support pile drilling and the construction of support pile pile body.The perpendicularity of water-seal pile can be improved with this method, forms preferably occlusion water-stagnating effect；The water-seal pile being constructed into is evenly closely knit, and pile quality is good；It can be used in hard stratum, sand pebble layer and have in the stratum of boulder to construct.
Description
Technical field
The present invention relates to foundation pit waterproof curtain engineering field, more particularly to a kind of construction method of water-stop curtain stake.
Background technology
As shown in figure 1, water-stop curtain refers to be arranged on the periphery of building foundation pit 1, for ensureing that foundation ditch 1 excavates, prevent or subtract
The continuous water-stop body that few foundation pit side-wall and foundation ditch bottom underground water flow into foundation ditch and taken.The conventional structure of water-stop curtain is by supporting
Stake 2 and the consecutive intervals of water-seal pile 3 arrangement, it is in one line and overlap to form bite 4 between each other.Support pile 2 is led
Play a part of earth-retaining, water-seal pile 3 plays a part of blocking the water layer outside foundation ditch to flow into foundation ditch.Support pile 2 typically uses steel
Reinforced concrete bored concrete pile or the strong pile body of other rigidity, water-seal pile 3 are that the soil body in hole and cement mortar are stirred or in the soil body
The cement earth pile that inner high voltage injection cement mortar forms, typically with rotary churning pile machine, mixing pile machine or long-auger jet-grouting agitation driller etc.
Mechanical execution forms.
Although with the soil cement rotary churning pile that rotary churning pile machine is constructed at Soft Deep Foundation Pit supporting, water-stop curtain and ground
There is good application in the fields such as reason, but when construction is compared with hard stratum, is then extremely restricted, especially runs into layer of sand or sand pebble layer
When, churning effect weakens significantly, can not implement.And in the long pile driving construction of deep basal pit curtain, churning that rotary churning pile machine is constructed into
Pile verticality cannot be guaranteed that the purpose for tending not to reach design causes sealing to fail.
With the cement mixing method that mixing pile machine is constructed because its easy construction, cost are cheap, and it is widely used in base
The fields such as supporting, water-stop curtain and basement process are cheated, but traditional mixing pile is extremely restricted, especially when construction is compared with hard stratum
It is even more to implement that it, which stirs layer of sand or sand pebble layer,.
Although the cement earth pile constructed with long-auger jet-grouting mixing pile machine preferably resolves pan soil area pore-forming and asked
Topic, but because long-auger jet-grouting mixing pile machine perpendicularity can only achieve 1%, in the longer pile driving construction of deep basal pit, the branch of bottom of foundation ditch
Fender pile and water-seal pile can not be often engaged, and formed " horn mouth ", caused drainage so that curtain water stop can not reach design
Requirement.In addition, when running into big boulder and cobble, block stone, the easy bit freezing of long spire stake machine, or even can not creep into.
The content of the invention
It is an object of the invention to provide the construction method that a kind of spiral-digging pore stirs water spray soil occlusion curtain pile, this method energy
The perpendicularity of water-seal pile is improved, forms preferably occlusion water-stagnating effect；The water-seal pile being constructed into is evenly closely knit, pile quality
It is good；It can be used in hard stratum, sand pebble layer and have in the stratum of boulder to construct.
The present invention above-mentioned technical purpose technical scheme is that：A kind of spiral-digging pore stirs spraying cement
The construction method of soil occlusion curtain pile, including following construction procedure：
Step a, surveying and locating：The stake position of water-seal pile and support pile is gone out according to design surveying and locating, and carries out mark；
Step b, rotary drilling rig is in place：Rig is in place, drill bit alignment water-seal pile stake position center, adjusts the horizontal and vertical degree of rig；
Step c, water-seal pile drills：Drilled according to intended diameter and projected depth；
Step d, banketed in hole, pulping outside hole：Soil is inserted in the hole being drilled, mixing cement in stock tank is mixed outside hole
Slurry；
Step e, long-auger jet-grouting agitation driller is in place：Rig is in place, connects high-pressure pump and high-voltage tube；
Step f, sealing pile driving construction：High-pressure pump is opened, starts long-auger jet-grouting agitation driller, carries out low pressure rotary-spraying stirring drilling；
After drill bit reaches bottom hole, high-pressure rotary-spray cement mortar is carried out, while cement mortar and the soil in hole are stirred, and at the uniform velocity lifting is bored
Head, design stake top absolute altitude is sprayed onto until stirring；
Step g, support pile drills：After the rising of water-seal pile intensity, rotary drilling rig carries out support pile drilling, while cuts adjacent stop
A part for water stake, the support pile after the completion of construction is set to be engaged with water-seal pile formation；
Step h, support pile pile body is constructed：Tripping in steel reinforcement cage in supporting stake holes, concrete perfusion, form armored concrete supporting
Stake, is mutually twisted to form continuous water-stop curtain with water-seal pile.
By using above-mentioned technical proposal, rotary drilling rig can be such that the perpendicularity deviation of water-seal pile controls in 0.3%, be formed
Preferably occlusion water-stagnating effect；Because the good soil backfilled in hole can stir more abundant, construction compared to original place layer soil stone with cement mortar
Into water-seal pile it is evenly closely knit, pile quality is good；Because the rotary drilling rig of use has stronger drilling force than twist bit, so
This method can be used in hard stratum, sand pebble layer and have in the stratum of boulder to construct.
Preferably, sandy soil or silt are filled out in hole in step d.
By using above-mentioned technical proposal, sandy soil or silt preferably can be stirred with cement mortar, be formed closely knit
Du Genggao water-seal pile, increase water-stagnating effect.
Preferably, in step f mesolows jet mixing drilling process, grouting pressure is controlled in 0.5~1.0MPa.
By using above-mentioned technical proposal, cement mortar is constantly sprayed in drill bit drilling process, mouth spray is not easy to result in blockage,
The pressure limit will not cause the waste of cement mortar simultaneously.
Preferably, in step f mesohighs jet mixing at the uniform velocity lifting process, grouting pressure is controlled in 20~30MPa.
By using above-mentioned technical proposal, grouting pressure can meet the water-seal pile in general stake footpath, cement mortar energy in the range of this
Enough to carry out effectively cutting infiltration to the soil body in the range of design stake footpath, when pressure is excessive, cement mortar can project a footpath scope, cause not
Necessary waste.
Preferably, in step f mesohighs jet mixing lifting process, the 2m models below stake bottom above 2m and stake top
Enclose that planted agent is repeated multiple times to stir spray.
It is key position to pile crown and stake bottom by using above-mentioned technical proposal, and the easy leakiness of pile crown backfill,
It is sprayed with so the two positions are carried out with reinforcement and is stirred beneficial to pile quality is improved, the possibility of leak occurs in the reduction later stage.
Preferably, it is 0.5~1.0m/min to lift speed.
By using above-mentioned technical proposal, disposable pile can be realized substantially in the speed, if lifting too fast, pile body meeting
Leakiness secondary need to stir spray, and lifting is too slow then to be influenceed efficiency of construction and cause the waste of cement mortar.
Preferably, armored concrete support pile is replaced with to the cement earth pile of interpolation shaped steel, its construction party in step h
Method is to insert soil in the supporting stake holes being drilled, and preventing slurry injection is stirred in hole with long-auger jet-grouting agitation driller, forms soil cement
Stake, shaped steel is inserted in the cement earth pile, form support pile；Shaped steel is pulled out after the backfill of foundation ditch fertilizer groove, is recycled.
By using above-mentioned technical proposal, more economical environmental protection, and also support pile front portion division technique is identical with water-seal pile, carries
High efficiency of construction, saves the duration.
Preferably, shaped steel is H profile steel.
By using above-mentioned technical proposal, H profile steel has more preferable lateral stressed effect compared to other shaped steel, can mitigate type
Steel weight, material is saved, under the premise that security is guaranteed, improve efficiency of construction.
In summary, the invention has the advantages that：
1st, rotary drilling rig can be such that the perpendicularity deviation of water-seal pile controls in 0.3%, improve the perpendicularity of water-seal pile, be formed more
Good occlusion water-stagnating effect；
2nd, the water-seal pile being constructed into is evenly closely knit, reduces undergauge phenomenon, improves the reliability of water-stop curtain；
3rd, it can be used in hard stratum, sand pebble layer and have in the stratum of boulder to construct；
4th, cut and be easier because the water-seal pile intensity first constructed is not high, when support pile drills；
5th, support pile using the method for insertion shaped steel in cement earth pile, more economical environmental protection, and support pile front portion division technique with
Water-seal pile is identical, improves efficiency of construction, saves the duration.
Brief description of the drawings
Fig. 1 is water stop curtain structure schematic diagram；
Fig. 2 is that spiral-digging pore stirs water spray soil occlusion curtain pile construction flow chart.
In figure, 1, foundation ditch；2nd, support pile；3rd, water-seal pile；4th, bite.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.Wherein identical parts identical reference
Represent.It should be noted that below in description the word "front", "rear", "left", "right", the "up" and "down" that use refer to it is attached
Direction in figure, word " bottom surface " and " top surface ", " interior " and " outer " are referred respectively to towards or away from particular elements geometric center
Direction.
Embodiment one：
As shown in Fig. 2 a kind of spiral-digging pore stirs the construction method of water spray soil occlusion curtain pile, including following construction procedure：
Step a, surveying and locating：The surveying setting-out on smooth location, plug waddy at the stake position of releasing or reinforcing rod enters rower
Know；Make to draw stake by stake position in addition, checked at any time when there is deviation so as to stake position；Draw stake and be centrally formed one with stake position for two
The identification pile of straight line, it is to make a call to a deep hole on the ground with drill rod or card punch to draw a common practice, pours into albarium powder；
Step b, rotary drilling rig is in place：Operating personnel control the movement of rig according to the stake position of releasing, it is ensured that drilling axle center is in place
Not partially, carry device leveling using rotary drilling rig and adjust that drilling rod is vertical, the perpendicularity deviation of drilling tool is controlled in 0.3% scope
Within；
Step c, water-seal pile drills：Drilled according to intended diameter and projected depth, lower drilling depth is monitored in drilling process, is kept away
Exempt from outdrill, whether the depth of measured hole meets design requirement during whole hole；Due to the rotary drilling rig of use have than twist bit it is stronger
Drilling force, so it can be used in hard stratum, sand pebble layer and have in the stratum of boulder to construct；
Step d, banketed in hole, pulping outside hole：After rotary drilling rig pore-forming, good soil is backfilled in hole；Implement for the ease of stirring spray, return
Banket preferred sandy soil or silt or other soil, but can not be the high soil of the content of organic matter, can not especially use peat soil；
During backfill too dry, water should be added to moisten；Backfill overhead height should be higher 0.5m than design stake top position；
The preparation of cement mortar is carried out in change-can mixer, the general ratio of mud can use 1.3~1.5, stir afterwards 60 mesh of mistake with thin vibratory sieve,
It is stored in pulp storage tank；Cement must possess outgoing certificate, and be sampled detection by batch；
Step e, long-auger jet-grouting agitation driller is in place：Rig is in place, bit central alignment hole position center, jelly suction pipe is put for one
Enter pulp storage tank, other end is connected with high-pressure pump, and high-pressure pump is attached with rig with high-voltage tube；
Step f, sealing pile driving construction：High-pressure pump is opened, Stress control is opened in 0.5~1.0MPa, long-auger jet-grouting agitation driller
Dynamic, average rate pierces bottom hole, the jet mixing when piercing；After drill bit reaches bottom hole, high-pressure rotary-spray cement mortar is carried out, while by cement
Slurry is stirred to form water-seal pile with the soil in hole；The Stress control of high-pressure rotary-spray cement mortar is in 20~30MPa；High-pressure rotary-spray stirs
During mixing, drill bit at the uniform velocity being lifted, raised speed using Frequency Converter Control, lifting speed should be controlled in 0.5~1.0m/min, until
Stir and be sprayed onto design stake top absolute altitude；In lifting process repeated multiple times stir is answered in the range of the above 2m of stake bottom and below pile crown in the range of 2m
Spray, make the backfill at the position and cement mortar stirring more abundant；Such as drill bit, when being promoted to bottom hole above 2m, rig is again to hole
Subdrilling enters, while enters horizontal high voltage and stir spray, after circulating 2 times, continues up lifting；Tripping in certain depth it can carry out again if necessary
Partly or wholly stir water-spray type slurry；Because the good soil backfilled in hole can be more abundant with cement mortar stirring compared to original place layer soil stone, apply
Work into water-seal pile it is evenly closely knit, pile quality is good；
Step g, support pile drills：After the rising of water-seal pile intensity, usually after water-seal pile is completed 3~5 days, rotary drilling rig is just
Position, carry out leveling using own device and adjust the perpendicularity of drilling rod, drilled by the support pile hole position center of design, simultaneously
A part for adjacent water-seal pile is cut, the support pile after the completion of construction is engaged with water-seal pile formation；Reach projected depth
Afterwards, drill bit is extracted, rig displacement；
Step h, support pile pile body is constructed：The steel reinforcement cage processed in advance is hung in support pile stake holes, irrigated into hole mixed
Solidifying soil, forms armored concrete support pile, is mutually twisted to form continuous water-stop curtain with water-seal pile.
Embodiment two：
It is with the difference of embodiment one：Armored concrete support pile replaces with the cement earth pile of interpolation shaped steel, type in step h
Steel can be H profile steel.
Soil is inserted in the supporting stake holes being drilled, preventing slurry injection is stirred in hole with long-auger jet-grouting agitation driller, forms water
Soil stake, shaped steel is inserted in the cement earth pile.Mould oil is smeared on the outside of shaped steel, shaped steel is sling with crane gear, utilizes it
Deadweight is sunk, it is impossible to when reaching projected depth, is vibrated shaped steel using machine of extricating oneself from a predicament and brace oneself up to action and is inserted, form support pile.
After the completion for the treatment of foundation ditch backfill, shaped steel is risen with special pulling and lifting machine and pulls out recovery, the cavity left on cement earth pile, uses water
Mud or cement grout are filled, and use bod.
This specific embodiment is only explanation of the invention, and it is not limitation of the present invention, people in the art
Member can make the modification of no creative contribution to the present embodiment as needed after this specification is read, but as long as at this
All protected in the right of invention by Patent Law.
Claims (8)
1. a kind of spiral-digging pore stirs the construction method of water spray soil occlusion curtain pile, it is characterised in that including following construction procedure：
Step a, surveying and locating：The stake position of water-seal pile and support pile is gone out according to design surveying and locating, and carries out mark；
Step b, rotary drilling rig is in place：Rig is in place, drill bit alignment water-seal pile stake position center, adjusts the horizontal and vertical degree of rig；
Step c, water-seal pile drills：Drilled according to intended diameter and projected depth；
Step d, banketed in hole, pulping outside hole：Soil is inserted in the hole being drilled, mixing cement in stock tank is mixed outside hole
Slurry；
Step e, long-auger jet-grouting agitation driller is in place：Rig is in place, connects high-pressure pump and high-voltage tube；
Step f, sealing pile driving construction：High-pressure pump is opened, starts long-auger jet-grouting agitation driller, carries out low pressure rotary-spraying stirring drilling；
After drill bit reaches bottom hole, high-pressure rotary-spray cement mortar is carried out, while cement mortar and the soil in hole are stirred, and at the uniform velocity lifting is bored
Head, design stake top absolute altitude is sprayed onto until stirring；
Step g, support pile drills：After the rising of water-seal pile intensity, rotary drilling rig carries out support pile drilling, while cuts adjacent stop
A part for water stake, the support pile after the completion of construction is set to be engaged with water-seal pile formation；
Step h, support pile pile body is constructed：Tripping in steel reinforcement cage in supporting stake holes, concrete perfusion, form armored concrete supporting
Stake, is mutually twisted to form continuous water-stop curtain with water-seal pile.
2. a kind of spiral-digging pore according to claim 1 stirs the construction method of water spray soil occlusion curtain pile, its feature exists
In：Sandy soil or silt are filled out in step d in hole.
3. a kind of spiral-digging pore according to claim 1 stirs the construction method of water spray soil occlusion curtain pile, its feature exists
In：In step f mesolow jet mixing drilling processes, grouting pressure is controlled in 0.5~1.0MPa.
4. a kind of spiral-digging pore according to claim 1 stirs the construction method of water spray soil occlusion curtain pile, its feature exists
In：In step f mesohighs jet mixing at the uniform velocity lifting process, grouting pressure is controlled in 20~30MPa.
5. a kind of spiral-digging pore according to claim 1 stirs the construction method of water spray soil occlusion curtain pile, its feature exists
In：In step f mesohigh jet mixing lifting process, repeated multiple times stir is answered in the range of the 2m below stake bottom above 2m and stake top
Spray.
6. a kind of spiral-digging pore according to claim 1 stirs the construction method of water spray soil occlusion curtain pile, its feature exists
In：Lifting speed is 0.5~1.0m/min.
7. a kind of spiral-digging pore according to claim 1 stirs the construction method of water spray soil occlusion curtain pile, its feature exists
In：Armored concrete support pile is replaced with to the cement earth pile of interpolation shaped steel, its construction method is, in the branch being drilled in step h
Soil is inserted in fender pile hole, preventing slurry injection is stirred in hole with long-auger jet-grouting agitation driller, cement earth pile is formed, in the cement earth pile
Interior insertion shaped steel, form support pile；Shaped steel is pulled out after the backfill of foundation ditch fertilizer groove, is recycled.
8. a kind of spiral-digging pore according to claim 7 stirs the construction method of water spray soil occlusion curtain pile, its feature exists
In：Shaped steel is H profile steel.
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| CN201710870695.2A CN107489158A (en) | 2017-09-23 | 2017-09-23 | A kind of spiral-digging pore stirs the construction method of water spray soil occlusion curtain pile |
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| CN201710870695.2A CN107489158A (en) | 2017-09-23 | 2017-09-23 | A kind of spiral-digging pore stirs the construction method of water spray soil occlusion curtain pile |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108589715A (en) * | 2018-05-10 | 2018-09-28 | 周同和 | One kind fetches earth Jet-Mixing Cement-Soil construction method |
| CN108842789A (en) * | 2018-08-31 | 2018-11-20 | 中建四局第四建筑工程有限公司 | A kind of support pile and the two-in-one constructing structure of water-stop curtain |
| CN110055934A (en) * | 2018-11-21 | 2019-07-26 | 中铁十一局集团第六工程有限公司 | A kind of high water level earth and rockfill dam Construction of plastic concrete cut-off wall method |
| CN112323560A (en) * | 2020-11-19 | 2021-02-05 | 中电建路桥集团有限公司 | Roadbed construction settlement control system and method under complex soft foundation environment |
| CN112459045A (en) * | 2020-12-01 | 2021-03-09 | 南京深地智能建造技术研究院有限公司 | Construction process of rotary digging hole-forming construction method pile |
| CN113136885A (en) * | 2021-04-02 | 2021-07-20 | 远强地基工程(天津)股份有限公司 | Cement soil waterproof curtain construction process with desulfurized gypsum cement as curing agent |
| CN113653083A (en) * | 2021-08-16 | 2021-11-16 | 北京市市政一建设工程有限责任公司 | Construction process of grouting waterproof curtain |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108589715A (en) * | 2018-05-10 | 2018-09-28 | 周同和 | One kind fetches earth Jet-Mixing Cement-Soil construction method |
| CN108842789A (en) * | 2018-08-31 | 2018-11-20 | 中建四局第四建筑工程有限公司 | A kind of support pile and the two-in-one constructing structure of water-stop curtain |
| CN110055934A (en) * | 2018-11-21 | 2019-07-26 | 中铁十一局集团第六工程有限公司 | A kind of high water level earth and rockfill dam Construction of plastic concrete cut-off wall method |
| CN112323560A (en) * | 2020-11-19 | 2021-02-05 | 中电建路桥集团有限公司 | Roadbed construction settlement control system and method under complex soft foundation environment |
| CN112323560B (en) * | 2020-11-19 | 2022-03-01 | 中电建路桥集团有限公司 | Roadbed construction settlement control system in complex soft foundation environment |
| CN112459045A (en) * | 2020-12-01 | 2021-03-09 | 南京深地智能建造技术研究院有限公司 | Construction process of rotary digging hole-forming construction method pile |
| CN113136885A (en) * | 2021-04-02 | 2021-07-20 | 远强地基工程(天津)股份有限公司 | Cement soil waterproof curtain construction process with desulfurized gypsum cement as curing agent |
| CN113653083A (en) * | 2021-08-16 | 2021-11-16 | 北京市市政一建设工程有限责任公司 | Construction process of grouting waterproof curtain |
| CN113653083B (en) * | 2021-08-16 | 2022-11-04 | 北京市市政一建设工程有限责任公司 | Construction process of grouting waterproof curtain |
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Application publication date: 20171219 |