CN107816047A - The method that backfill construction is carried out using premixing fluidised form solidified earth - Google Patents
The method that backfill construction is carried out using premixing fluidised form solidified earth Download PDFInfo
- Publication number
- CN107816047A CN107816047A CN201711060680.6A CN201711060680A CN107816047A CN 107816047 A CN107816047 A CN 107816047A CN 201711060680 A CN201711060680 A CN 201711060680A CN 107816047 A CN107816047 A CN 107816047A
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- Prior art keywords
- backfill
- slurries
- earthwork
- fluidised form
- solidified earth
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/18—Making embankments, e.g. dikes, dams
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/10—Improving by compacting by watering, draining, de-aerating or blasting, e.g. by installing sand or wick drains
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- Soil Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
A kind of method that backfill construction is carried out using premixing fluidised form solidified earth, this method are comprised the following steps：The earthwork is backfilling into the construction part for needing to carry out backfill with nature；Then to the curing agent slurries that premixing is poured into backfill, slurries are higher by backfill earthwork certain altitude and form the gravity impetus so that the slurries are infiltrated through in the earthwork of backfill in the presence of self gravitation；Whether detection slurries have penetrated into earthwork bottom, be at the position do not permeated completely if the earthwork is not completely by slurry infiltration, and supplement is poured into curing agent slurries and continues to permeate and/or be stirred using agitating device at the position.Or this method comprises the following steps：The soil body is inputted in mixer, while the curing agent slurries mixed are also added in mixer in ratio set in advance and is sufficiently mixed, crushed and stirred, forms premixing fluidised form solidified earth；Premixing fluidised form solidified earth is delivered to backfill job site by pump or tank car, and carries out backfill operation；In backfilling operation process big aggregate is being thrown into premixing fluidised form solidified earth.Using two method can most efficiently utilizing works excavate to greatest extent the earthwork in itself, speed of application is fast, and cost is low, reliable in quality.
Description
Technical field
The present invention relates to a kind of method that backfill construction is carried out using premixing fluidised form solidified earth.
Background technology
The construction for largely needing backfill in fields such as construction, road construction, water conservancy construction, mining industry goafs be present
Operating mode.The conventional method backfilled mostly using dirt segmentation branch in the prior art, this method speed of application is slow, human factor
More, construction quality is unstable, and many hidden danger are brought to construction quality；With expanding economy, some engineerings use low grade
Concrete replaces dirt to carry out backfill construction, and this method speed of application is fast, reliable in quality, but cost is too high, and the later stage
Such as need to excavate and will bring very big inconvenience.
Engineers and technicians have carried out many practices and invention for backfill, occur in recent years using traditional backfill
Layer, bed course is provided with the upper surface of the back fill course, through hole is offered on the bed course, is worn in the through hole for cement
The Grouting Pipe of slurries water conservancy diversion, the Grouting Pipe are worn to back fill course, are condensed into after cement grout solidification with back fill course
One induration, the intensity of back fill course is improved, prevents the sedimentation of back fill course.Also just like Chinese patent CN104963349
Disclosed in backfill construction method, methods described be on the place of former deep pit digging, by interim excavation soil sorting accumulation
On the ground near deep basal pit, then excavation soil is again returned in a manner of mud in former deep basal pit using filling technique,
Make the soil property after backfill closely knit by draining in backfilling process, and be allowed to same layer soil balanced Matching regulation and control appropriateness, thus successively
Backfill untill the terrace absolute altitude of design control.
Engineering also uses the method that water sinks, and adds water in the earthwork of backfill, passes through the induced effect soil of water
Fang Mishi, but often due to the dosage control of water is bad and causes spongy soil or land subsidence.
A kind of method that backfill construction is carried out using premixing fluidised form solidified earth of present invention offer, premixing fluidised form solidified earth,
Premixing can be formed in mixer, can also at the construction field (site) in be separately added into the earthwork and hardening slurry stirs to be formed.The party
Method can most efficiently utilizing works excavate to greatest extent the earthwork in itself, speed of application is fast, and cost is low, reliable in quality.
The content of the invention
A kind of method that backfill construction is carried out using premixing fluidised form solidified earth, this method are comprised the following steps：By the earthwork
The construction part for needing to carry out backfill is backfilling into nature；Then to the curing agent slurries that premixing is poured into backfill,
Slurries are higher by backfill earthwork certain altitude and form the gravity impetus so that the slurries infiltrate through backfill in the presence of self gravitation
In cubic metre of earth；Whether detection slurries have penetrated into earthwork bottom, be incomplete if the earthwork is not completely by slurry infiltration
The position of infiltration, supplement are poured into curing agent slurries and continue to permeate and/or be stirred using agitating device at the position.
Cubic metre of earth use the natural earth excavated in engineering, loose condition (of surface) when keeping during backfill it to be dug out, do not spend
Except bulky grain therein.Backfill substep backfills, and does not backfill i.e. progress slurries after completing a step and pours into, pours into and be verified
Afterwards, next step backfill construction is carried out, the thickness of substep is often to walk 50-150cm.According to condition of construction, plug-in type can be used
Agitator is stirred mix to the soil body for penetrating into slurries.
When the slurries once poured into are excessive, the appropriate backfill earthwork is inserted wherein to absorb slurries.
Big aggregate can be added in the backfill earthwork, big aggregate is concrete block, fragment of brick, stone or clinker.
The soil body can also be inputted in mixer, while the curing agent slurries mixed also are added in ratio set in advance
It is sufficiently mixed, crushed and stirred into mixer, forms premixing fluidised form solidified earth；By premixing fluidised form solidified earth by pump or
Tank car is delivered to backfill job site, and carries out backfill operation；Thrown in backfilling operation process into premixing fluidised form solidified earth
Enter big aggregate；Big aggregate is concrete block, fragment of brick, stone, clinker etc..
After backfilling job execution in two methods, on premixing fluidised form solidified earth surface, cover film is conserved.
In two method that curing agent is levigate by GZM resonance grinders, curing agent granularity is not more than 80 μm.
Horizontal or vertical mixer is used in latter method, mixer has the function of broken soil block, finally mixed and stirred
Solidified earth maximum soil particle is not more than 20mm.The slump for the fluidised form solidified earth mixed and stirred is 8-20mm.Premixing fluidised form solidified earth
Intensity is 0.5-1.5MPa.
The place for needing to backfill is cleaned out before backfill operation is carried out in latter method, and moistening of watering.Backfilling process
It is middle that symmetry operation is carried out according to project situation.
The premixing fluidised form solidified earth that the first step is poured in latter method is highly no more than 50cm.
In latter method in premixing fluidised form solidifies earthen backfill operation process, large granular materials, particle are thrown into thereto
Footpath is not less than 50mm, to prevent premixing fluidised form solidified earth from ftractureing.
In two methods after solidified earth final step is constructed, in the uniform spreading granule materials in its surface, grain diameter
15-30mm.
Curing agent slurries can be replaced with cement grout in two methods.
Curing agent is can to permeate to fill and promote or control the material or mixture of curing reaction with soil particle, and it is wrapped
Active silica-alumina material and exciting agent are included, it improves soil by the plural gel effect after the aquation in the soil body and fill strengthening effect
Intensity, consistency, the stability of body.
Using this method can most efficiently utilizing works excavate to greatest extent the earthwork in itself, speed of application is fast, cost
It is low, reliable in quality.
Embodiment
Construction embodiment 1, a foundation ditch for needing to backfill, foundation ditch most 12 meters of deep position, base widths are average 3 meters, and foundation ditch is about
45 degree of slopes.The backfill earthwork is poured into foundation ditch using navy barrow, height 80cm is put into every time, is then put into by tank car and chute
Curing agent slurries, the proportionings of curing agent slurries are that the weight ratio of curing agent and water is 1：2, the proportion of curing agent slurries is 1.25；
The slurries being put into every time are higher by backfill face 50cm, and when slurry surface does not have bubble to emerge, detector bar is inserted into the soil body, when
When slurries penetrate into uneven, stirred with plug-in type agitator.After final step is constructed, particulate matter is uniformly added on surface
Expect and addition plastic foil is conserved thereon, until test cube in the same condition reaches intensity requirement.
Construction embodiment 2, in a piping lane engineering, 18 meters of buried depth, the equal gunite concrete bank protection of bilateral slope, piping lane bottom
Bed course stretches out, and connects with double-sided bevel bank protection.Fertile groove is cleaned out, backfill premixing fluidised form is used as using the earthwork that piping lane is dug out
The material of solidified earth, is delivered in horizontal mixer with conveyer belt, and curing agent is prepared into slurries is also delivered in mixer, Gu
The addition of agent be final products weight than 22%；It is sufficiently mixed after adding curing agent slurries, mixer crushes
The earthwork is crushed and is sufficiently stirred to form premixing fluidised form solidified earth by device.Premixing fluidised form solidified earth is poured into fertile groove by chute
Interior, fluidised form solidified earth is poured simultaneously in piping lane both sides, and it is 50cm that first layer, which pours height, after the first laminar flow regime solidified earth initial set
Continue to pour.Slump control is not less than 1.5MPa in 10mm, 60 days intensity of premixing fluidised form solidified earth.In premixing fluidised form solidified earth
In be thrown into the building wastes such as fragment of brick, its particle diameter is 80-150mm, with being thrown into pouring.After the completion of premixing fluidised form solidified earth is poured,
Particle diameter 15-30mm granule materials are uniformly sprinkled on its surface, treat that the initial set of fluidised form solidified earth is spread plastic sheeting backward and supported thereon
Shield 28 days.
Construction embodiment 3, a coal mine gob, 15 meters of tunnel buried depth, 5 meters of Breadth Maximum, 2.5 meters of height.The earthwork is defeated
Vertical mixer is delivered to, while curing agent is prepared into slurries and is also delivered in mixer, the addition of curing agent is final production
Product weight than 14%；It is sufficiently mixed after adding curing agent slurries, the breaker of mixer is broken and abundant by the earthwork
Stirring forms premixing fluidised form solidified earth.The discharging opening of ground pump and mixer is connected, collapses and send fluidised form solidified earth to enter goaf, is flowed
The slump of state solidified earth is 18mm, and 60 days intensity of premixing fluidised form solidified earth is not less than 0.5MPa.
Claims (10)
- A kind of 1. method that backfill construction is carried out using premixing fluidised form solidified earth, it is characterised in that this method includes following step Suddenly：The earthwork is backfilling into the construction part for needing to carry out backfill with nature；Then to pouring into consolidating for premixing in backfill Agent slurries, slurries are higher by backfill earthwork certain altitude and form the gravity impetus so that the slurries ooze in the presence of self gravitation Penetrate in the earthwork of backfill；Whether detection slurries have penetrated into earthwork bottom, if the earthwork is not completely by slurry infiltration At the position do not permeated completely, supplement is poured into curing agent slurries and continues to permeate and/or carried out using agitating device at the position Stirring.
- 2. the method as described in claim 1, it is characterised in that the earthwork uses the natural earth excavated in engineering, during backfill Keep its loose condition (of surface) after being dug out；Backfill substep backfills, and carrying out slurries after one step of often backfill completion pours into, and pours into simultaneously After being verified, next step backfill construction is carried out, the thickness of substep is often to walk 50-150cm.
- 3. method as claimed in claim 1 or 2, it is characterised in that according to condition of construction, plug-in type agitator pair can be used The soil body for penetrating into slurries is stirred mix.
- 4. method as claimed in claim 1 or 2, it is characterised in that big aggregate can be added in the backfill earthwork, big aggregate is concrete Block, fragment of brick, stone or clinker.
- A kind of 5. method that backfill construction is carried out using premixing fluidised form solidified earth, it is characterised in that this method includes following step Suddenly：The soil body is inputted in mixer, while the curing agent slurries mixed are also added in mixer in ratio set in advance It is sufficiently mixed, crushed and stirred, forms premixing fluidised form solidified earth；Premixing fluidised form solidified earth is delivered to by pump or tank car Backfill job site, and carry out backfill operation；Big aggregate is being thrown into premixing fluidised form solidified earth in backfilling operation process, greatly Aggregate is concrete block, fragment of brick, stone or clinker.
- 6. the method as described in claim 1 or 5, it is characterised in that after backfill job execution, in premixing fluidised form solidified earth Surface cover film is conserved.
- 7. the method as described in claim 1 or 5, it is characterised in that it is wherein that curing agent is levigate by GZM resonance grinders, Curing agent granularity is not more than 80 μm.
- 8. method as claimed in claim 5, it is characterised in that wherein have broken using horizontal or vertical mixer, mixer The function of soil crushing, the solidified earth maximum soil particle finally mixed and stirred are not more than 20mm；The slump for the fluidised form solidified earth mixed and stirred It is 0.5-1.5MPa to spend for 8-20mm, premixing fluidised form solidified earth intensity.
- 9. the method as described in claim 1 or 5, it is characterised in that curing agent slurries can be replaced with cement grout.
- 10. the method as described in claim 1 or 5, it is characterised in that after the final step of fluidised form solidified earth is constructed, The uniform spreading granule materials in its surface, grain diameter 15-30mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711060680.6A CN107816047A (en) | 2017-11-01 | 2017-11-01 | The method that backfill construction is carried out using premixing fluidised form solidified earth |
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|---|---|---|---|
| CN201711060680.6A CN107816047A (en) | 2017-11-01 | 2017-11-01 | The method that backfill construction is carried out using premixing fluidised form solidified earth |
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| CN107816047A true CN107816047A (en) | 2018-03-20 |
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| CN201711060680.6A Pending CN107816047A (en) | 2017-11-01 | 2017-11-01 | The method that backfill construction is carried out using premixing fluidised form solidified earth |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111676987A (en) * | 2020-06-02 | 2020-09-18 | 北京建材地质工程有限公司 | Construction method for backfilling construction of construction fertilizer tank by vibrating, slurry-flushing and ramming method |
| CN112252336A (en) * | 2020-10-16 | 2021-01-22 | 中建八局发展建设有限公司 | Construction method for backfilling foundation trench of premixed fluidized solidified soil |
| CN112359848A (en) * | 2020-10-30 | 2021-02-12 | 北京住总第六开发建设有限公司 | Construction method for backfilling fertilizer groove by using solidified soil |
| CN112695772A (en) * | 2021-01-18 | 2021-04-23 | 北京建材地质工程有限公司 | Construction method for backfilling construction of construction fertilizer groove by slurry filling interlayer method |
| CN112813993A (en) * | 2021-01-04 | 2021-05-18 | 上海市城市建设设计研究总院（集团）有限公司 | Backfill construction method for grooving and pipe burying foundation trench by adopting self-compacting backfill |
| CN113006090A (en) * | 2021-03-01 | 2021-06-22 | 北京建材地质工程有限公司 | Self-compacting filling method for top of pipe gallery or ground reservoir by using slurry |
| CN113089747A (en) * | 2021-02-25 | 2021-07-09 | 中建三局第二建设工程有限责任公司 | Fertilizer groove backfilling construction method based on self-compacting backfilled soil |
| CN115403352A (en) * | 2022-09-16 | 2022-11-29 | 蒋黔湘 | Method for preparing fluid solidified soil by using building residue soil |
| CN115450229A (en) * | 2022-08-31 | 2022-12-09 | 上海城建市政工程（集团）有限公司 | Pipeline groove excavation backfill construction method based on in-situ solidification of retaining wall slurry |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111676987A (en) * | 2020-06-02 | 2020-09-18 | 北京建材地质工程有限公司 | Construction method for backfilling construction of construction fertilizer tank by vibrating, slurry-flushing and ramming method |
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| CN112813993A (en) * | 2021-01-04 | 2021-05-18 | 上海市城市建设设计研究总院（集团）有限公司 | Backfill construction method for grooving and pipe burying foundation trench by adopting self-compacting backfill |
| CN112695772A (en) * | 2021-01-18 | 2021-04-23 | 北京建材地质工程有限公司 | Construction method for backfilling construction of construction fertilizer groove by slurry filling interlayer method |
| CN113089747A (en) * | 2021-02-25 | 2021-07-09 | 中建三局第二建设工程有限责任公司 | Fertilizer groove backfilling construction method based on self-compacting backfilled soil |
| CN113006090A (en) * | 2021-03-01 | 2021-06-22 | 北京建材地质工程有限公司 | Self-compacting filling method for top of pipe gallery or ground reservoir by using slurry |
| CN115450229A (en) * | 2022-08-31 | 2022-12-09 | 上海城建市政工程（集团）有限公司 | Pipeline groove excavation backfill construction method based on in-situ solidification of retaining wall slurry |
| CN115403352A (en) * | 2022-09-16 | 2022-11-29 | 蒋黔湘 | Method for preparing fluid solidified soil by using building residue soil |
| CN115403352B (en) * | 2022-09-16 | 2023-09-05 | 蒋黔湘 | Method for preparing fluid solidified soil by using building slag soil |
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