CN108952758A - A kind of layer of sand slip casting earth's surface lifting control method based on borehole collapse and induction splitting - Google Patents
A kind of layer of sand slip casting earth's surface lifting control method based on borehole collapse and induction splitting Download PDFInfo
- Publication number
- CN108952758A CN108952758A CN201810670494.2A CN201810670494A CN108952758A CN 108952758 A CN108952758 A CN 108952758A CN 201810670494 A CN201810670494 A CN 201810670494A CN 108952758 A CN108952758 A CN 108952758A
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- China
- Prior art keywords
- drilling
- layer
- slip casting
- earth
- splitting
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/001—Improving soil or rock, e.g. by freezing; Injections
Abstract
Control method is lifted for the earth's surface based on induction splitting and drilling of collapsing the present invention provides a kind of.Layer of sand transverse passage-way front pre-grouting is crossed for subway engineering to reinforce, and is drilled by laying to collapse to induce splitting drilling and collapse, realization control slurries trend and the purpose for reducing earth's surface lifting.By induction splitting drilling, lower target stabilization zone reservoir stress, control slurries trend prevents earth's surface running pulp；By drilling of collapsing, uplift buffer area is created, reduces earth's surface lifting.The two cooperates pipe canopy, both can guarantee slip casting effect while can be effectively controlled earth's surface lifting.
Description
Technical field
The invention mainly relates to the controls that earth's surface during a kind of transverse passage-way layer of sand grouting and reinforcing for subway engineering is lifted
Method.
Background technique
In recent years, China's subway engineering puts into construction in succession, and various geological disaster controls become key urgently to be resolved and ask
Topic.Layer of sand grouting and reinforcing is the common technical problem faced in a kind of Metro Construction especially in coastal cities.Under wear
The transverse passage-way pre-grouting of municipal highway reinforces difficulty maximum, and Major Difficulties are as follows:
(1) water supply line, combustion gas handle money, electric power piping lane and sewage conduct etc. are generally laid along municipal highway, for slip casting
Caused earth's surface lifting requires more harsh.
(2) transverse passage-way buried depth is shallower, and enough only slurry stratum, slurries are lacked during slip casting and are easier to from earth's surface running pulp；
Final grouting pressure is not high simultaneously, and slip casting effect is bad.
(3) layer of sand compressibility itself is not high, and slip casting is easy to cause earth's surface lifting excessive, and slip casting difficulty is larger.
Therefore, it is badly in need of a kind of method that both can guarantee slip casting effect while can be effectively controlled earth's surface lifting.
Summary of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the present invention provides one kind for based on induction splitting and drilling of collapsing
Earth's surface be lifted control method.By induction splitting drilling, lower target stabilization zone reservoir stress, control slurries trend prevents
Earth's surface running pulp；By drilling of collapsing, uplift buffer area is created, reduces earth's surface lifting.The two cooperates pipe canopy, both can guarantee
Slip casting effect can be effectively controlled earth's surface lifting simultaneously.
The technical scheme adopted by the invention is that:
A kind of layer of sand slip casting earth's surface lifting control method based on borehole collapse and induction splitting, primarily directed to ground ironworker
Journey crosses the reinforcing of layer of sand transverse passage-way front pre-grouting, is drilled by laying to collapse to induce splitting drilling and collapse, realization control slurries
Trend and the purpose for reducing earth's surface lifting.
Further, collapsing induction splitting drilling, is laid in below inlet well, issues in grouting pressure influence
Raw to collapse, surrounding formation stress reduces, bad student's plane of weakness, provides splitting space for slurries, induction slurries generate horizontal splitting with
Partial stowage is compacted, and control slurries spread running pulp to earth's surface, carries out reducing earth's surface lifting.
Further, collapsing drilling is laid in above inlet well at pipeline, and drilling of collapsing is lifted on stratum
It can collapse under the influence of rising, form a buffer area, absorb stratum deformation, reducing influences earth's surface and pipeline.
Further, casing, ring flange and valve are respectively mounted in each collapsing induction splitting drilling and drilling of collapsing
Door can carry out switch adjustment according to running pulp situation and earth's surface lifting during slip casting, the solidification of dual slurry Local Instantaneous is avoided to cause
Earth's surface be lifted suddenly.
Further, specific construction method is as follows:
(1) drilling of multiple sequences is bored in the transversal cross-section in channel, including collapse induction splitting drilling, multilayer slip casting
Hole, collapsing hole；Drilling is horizontal drilling, and aperture depth is lower than desired drilling depth, and the sealing casing in each drilling,
In casing outer end mounting flange and valve；
(2) induction splitting of collapsing will be laid and drill whole drilling wells to specified segmentation depth, keep valve in the open state；
(3) according to the sequence from centre to two sides, first layer injected hole is crept into specified segmentation depth and is carried out one by one
Slip casting；After the completion of first layer mortar depositing construction, by this layer of slip casting hole drill, all drilling makes valve be in open shape to segmentation depth again
State, the inlet well of this layer is used as induction splitting drilling of collapsing at this time；
(4) according to the sequence from centre to two sides, the drilling of the second layer is crept into specified segmentation depth and is carried out one by one
Slip casting, the drilling of the second layer is as inlet well at this time；Likewise, after the completion of second layer mortar depositing construction, by this layer of slip casting hole drill
All drilling keeps valve in the open state, the inlet well of this layer is bored as induction splitting of collapsing at this time to segmentation depth again
Hole uses；
(6) drilling that next layer is successively carried out according to step (4), until this section of slip casting is completed；
(7) face is drilled and creeps into row segmentation depth progress slip casting；After first section long whole slip casting, repeat above-mentioned
Process carries out next segment length's mortar depositing construction.
Further, during above-mentioned slip casting, it is lifted excessive situation if there is earth's surface or pipeline, can be bored collapsing
All drilling keeps the valve in collapsing hole in the open state, then carries out according still further to the above process to corresponding segmentation depth in hole
Slip casting；Before each bored grouting, situation is lifted according to earth's surface, the drilling that can will collapse carries out repeating cleaning bottom of hole.
Further, in the step (3): if induction splitting drilling of collapsing occurs to close valve when running pulp is serious；
When carrying out next bored grouting, then it will collapse and splitting drilling induced to be placed in opening state.
Further, in the step (4): during slip casting, if occur can will be right when running pulp is serious for first layer drilling
The valve answered is closed；When carrying out next bored grouting, then the hole is placed in opening state.
Further, the collapsing induction splitting drilling is located at the lower section of first layer injected hole, first layer slip casting hole location
In the lower section of second layer injected hole, the collapsing hole is located at the top of all injected holes.
Beneficial effects of the present invention are as follows:
The present invention lowers target stabilization zone reservoir stress by induction splitting drilling, and control slurries trend prevents earth's surface from running
Slurry；By drilling of collapsing, uplift buffer area is created, reduces earth's surface lifting.The two cooperates pipe canopy, both can guarantee that slip casting was imitated
Fruit can be effectively controlled earth's surface lifting simultaneously.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation are not constituted an undue limitation on the present application for explaining the application.
Fig. 1 are as follows: collapse induction splitting drilling schematic diagram；
Fig. 2 are as follows: collapse drilling schematic diagram；
Fig. 3 are as follows: the schematic diagram of integral construction；
Fig. 4 are as follows: sealing casing, the schematic diagram of ring flange and valve are installed in drilling.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.Unless another
It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination；
In order to facilitate narration, if there is "upper", "lower" printed words in the present invention, the upper and lower with attached drawing itself is only indicated
To consistent, restriction effect is not played to structure, it is only for convenient for the description present invention and simplify description, rather than indicate or dark
Show that signified equipment or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.
As background technique is introduced, the transverse passage-way pre-grouting for wearing municipal highway down in the prior art reinforces difficulty most
Greatly, Major Difficulties are as follows:
(1) water supply line, combustion gas handle money, electric power piping lane and sewage conduct etc. are generally laid along municipal highway, for slip casting
Caused earth's surface lifting requires more harsh.
(2) transverse passage-way buried depth is shallower, and enough only slurry stratum, slurries are lacked during slip casting and are easier to from earth's surface running pulp；
Final grouting pressure is not high simultaneously, and slip casting effect is bad.
(3) layer of sand compressibility itself is not high, and slip casting is easy to cause earth's surface lifting excessive, and slip casting difficulty is larger.Therefore, anxious
The method for needing one kind both to can guarantee slip casting effect while can be effectively controlled earth's surface lifting.
In a kind of typical embodiment of the application, layer of sand transverse passage-way front pre-grouting is crossed mainly for subway engineering and is added
Gu it is drilled by laying to collapse to induce splitting drilling and collapse, realization control slurries trend and the purpose for reducing earth's surface lifting.
When construction, several common drillings can be done in advance below inlet well, that is, induction splitting drilling of collapsing is led to slip casting and bored
When the slip casting of hole, induction splitting drilling of collapsing is collapsed under the influence of grouting pressure, and surrounding formation stress reduces, and bad student is weak
Face provides splitting space for slurries, and induction slurries generate horizontal splitting and partial stowage is compacted, and control slurries are spread to earth's surface to be run
Slurry carries out reducing earth's surface lifting.Fig. 1 is shown in induction splitting drilling of collapsing；
It, can be above inlet well, close to danger in order to further control earth's surface lifting when slip casting causes earth's surface lifting excessive
Dangerous pipeline position, the bigger common horizontal drilling of one round diameter of construction, that is, drilling of collapsing.During slip casting, stratum moves up lifting,
Lead to borehole collapse, form a buffer area, absorb stratum deformation, reducing influences earth's surface and pipeline.Fig. 2 is shown in drilling of collapsing；
The present invention lowers target stabilization zone reservoir stress by induction splitting drilling, and control slurries trend prevents earth's surface from running
Slurry；By drilling of collapsing, uplift buffer area is created, reduces earth's surface lifting.The two cooperates pipe canopy, both can guarantee that slip casting was imitated
Fruit can be effectively controlled earth's surface lifting simultaneously.
Below with reference to case history, the present invention is further described.
Grouting program uses protrusive segmenting slip casting, and slurries use cement soluble glass paste, and drilling arrangement is shown in that Fig. 3 includes A
Sequence drilling, the drilling of B sequence, the drilling of C sequence and drilling of collapsing, wherein the drilling of A sequence is induction splitting drilling of collapsing, and the drilling of B sequence is slip casting
Drilling also serves as collapsing induction splitting drilling, and the drilling of C sequence is inlet well.Specific implementation step is as follows:
(1) show first by Fig. 3 and carry out aperture (including the drilling of A sequence, the drilling of B sequence, the drilling of C sequence and collapsing drill), the drilling
It is horizontal drilling, the depth 2m of each aperture, and the sealing casing in each drilling, mounting flange and valve, specifically
Structure is shown in Fig. 4；
In Fig. 4, casing is mounted in drilling, the input terminal mounting flange and valve of casing；The drilling of B sequence, the drilling of C sequence
As the injected hole used time, Grouting Pipe passes through corresponding casing, carries out slip casting.
(2) A sequence is drilled into whole drilling wells to specified segmentation depth, the valve for making A sequence drill is in the open state, and A sequence is bored
Hole is as induction splitting drilling of collapsing；The drilling method of A sequence drilling, which can be, from left to right to be crept into, and is also possible to from centre
It is crept into the sequence of two sides.
(3) according to the sequence from centre to two sides, B sequence drilling drilling to specified segmentation depth is simultaneously infused simultaneously one by one
Slurry, at this time B sequence drilling are used as inlet well.During slip casting, if inciting somebody to action when running pulp is serious occurs in the drilling of some corresponding A sequence
Valve is closed；When carrying out next bored grouting, then the A sequence is drilled and is placed in opening state.
(4) after the completion of the construction of B sequence bored grouting, B sequence is drilled and is all crept into segmentation depth, valve is made to be in open shape
State, at this time B sequence drilling are used as induction splitting drilling of collapsing；
(5) according to the sequence from centre to two sides, C sequence drilling drilling to specified segmentation depth and is subjected to slip casting one by one,
C sequence drilling at this time is used as inlet well.During slip casting, if the drilling of B sequence occurs to close valve when running pulp is serious.It carries out
When next bored grouting, then B sequence is drilled and is placed in opening state.
(6) slip casting is carried out finally, face is drilled and creeps into row segmentation depth.
After (7) first sections long whole slip casting, repeats the above process and carry out next segment length's mortar depositing construction.
(8) during above-mentioned slip casting, it is lifted excessive situation if there is earth's surface or pipeline, can will collapse drilling all
Drilling keeps the valve in collapsing hole in the open state, then carries out slip casting according still further to the above process to corresponding segmentation depth.Often
Before a bored grouting, situation is lifted according to earth's surface, the drilling that can will collapse carries out repeating cleaning bottom of hole.
It further illustrates, above only by taking two layers of slip casting (drilling of B sequence, the drilling of C sequence) as an example, the explanation of progress can
To carry out multilayer slip casting as needed.
Collapsing recited above drills due to the distribution close to pipeline, substantially its distribution form is linear point
Cloth；
A sequence drilling recited above is set to the lower section of pipe canopy；The drilling of B sequence, the drilling of C sequence are set to above pipe canopy；And C sequence
Drilling is located at B sequence drilling top.
The foregoing is merely preferred embodiment of the present application, are not intended to limit this application, for the skill of this field
For art personnel, various changes and changes are possible in this application.Within the spirit and principles of this application, made any to repair
Change, equivalent replacement, improvement etc., should be included within the scope of protection of this application.
Claims (9)
1. a kind of layer of sand slip casting earth's surface based on borehole collapse and induction splitting is lifted control method, which is characterized in that for ground
Ironworker's journey crosses the reinforcing of layer of sand transverse passage-way front pre-grouting, is drilled by laying to collapse to induce splitting drilling and collapse, realization control
Slurries trend and the purpose for reducing earth's surface lifting.
2. the layer of sand slip casting earth's surface as described in claim 1 based on borehole collapse and induction splitting is lifted control method, special
Sign is that the collapsing induction splitting drilling is laid in below inlet well.
3. the layer of sand slip casting earth's surface as described in claim 1 based on borehole collapse and induction splitting is lifted control method, special
Sign is that the collapsing drilling is laid in above inlet well at pipeline.
4. the layer of sand slip casting earth's surface as described in claim 1 based on borehole collapse and induction splitting is lifted control method, special
Sign is, is respectively mounted casing, ring flange and valve, slip casting process in each collapsing induction splitting drilling and drilling of collapsing
In can according to running pulp situation and earth's surface lifting carry out switch adjustment, avoid dual slurry Local Instantaneous solidify caused by earth's surface lift suddenly
It rises.
5. the layer of sand slip casting earth's surface as described in claim 1 based on borehole collapse and induction splitting is lifted control method, special
Sign is, specific as follows:
(1) drilling of multiple sequences is bored in the transversal cross-section in channel, including induction splitting of collapsing drills, multilayer injected hole, collapses
Collapse hole；Drilling is horizontal drilling, and aperture depth is lower than desired drilling depth, and the sealing casing in each drilling, is covering
Pipe outer end mounting flange and valve；
(2) induction splitting of collapsing will be laid and drill whole drilling wells to specified segmentation depth, keep valve in the open state；
(3) according to the sequence from centre to two sides, first layer injected hole is crept into specified segmentation depth one by one and carries out slip casting；
After the completion of first layer mortar depositing construction, by this layer of slip casting hole drill, all drilling keeps valve in the open state to depth is segmented again, this
When this layer inlet well as collapse induction splitting drilling use；
(4) according to the sequence from centre to two sides, the drilling of the second layer is crept into specified segmentation depth one by one and carries out slip casting,
The drilling of the second layer is as inlet well at this time；Likewise, after the completion of second layer mortar depositing construction, again all by this layer of slip casting hole drill
Drilling keeps valve in the open state, the inlet well of this layer is used as induction splitting drilling of collapsing at this time to segmentation depth；
(6) drilling that next layer is successively carried out according to step (4), until this section of slip casting is completed；
(7) face is drilled and creeps into row segmentation depth progress slip casting；After first section long whole slip casting, repeat the above process
Carry out next segment length's mortar depositing construction.
6. the layer of sand slip casting earth's surface as claimed in claim 5 based on borehole collapse and induction splitting is lifted control method, special
Sign is, during above-mentioned slip casting, excessive situation is lifted if there is earth's surface or pipeline, and can will collapse all drillings that drills
To corresponding segmentation depth, keeps the valve in collapsing hole in the open state, then carry out slip casting according still further to the above process；Each brill
Before the slip casting of hole, situation is lifted according to earth's surface, the drilling that can will collapse carries out repeating cleaning bottom of hole.
7. the layer of sand slip casting earth's surface as claimed in claim 5 based on borehole collapse and induction splitting is lifted control method, special
Sign is, in the step (3): if induction splitting drilling of collapsing occurs to close valve when running pulp is serious；It carries out next
When bored grouting, then it will collapse and splitting drilling induced to be placed in opening state.
8. the layer of sand slip casting earth's surface as claimed in claim 5 based on borehole collapse and induction splitting is lifted control method, special
Sign is, in the step (4): during slip casting, if first layer drilling occurs to close corresponding valve when running pulp is serious
It closes；When carrying out next bored grouting, then the hole is placed in opening state.
9. the layer of sand slip casting earth's surface as claimed in claim 5 based on borehole collapse and induction splitting is lifted control method, special
Sign is that the collapsing induction splitting drilling is located at the lower section of first layer injected hole, and first layer injected hole is located at second layer note
The lower section in hole is starched, the collapsing hole is located at the top of all injected holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810670494.2A CN108952758B (en) | 2018-06-26 | 2018-06-26 | Sand layer grouting ground surface lifting control method based on borehole collapse and induced splitting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810670494.2A CN108952758B (en) | 2018-06-26 | 2018-06-26 | Sand layer grouting ground surface lifting control method based on borehole collapse and induced splitting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108952758A true CN108952758A (en) | 2018-12-07 |
| CN108952758B CN108952758B (en) | 2020-11-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810670494.2A Active CN108952758B (en) | 2018-06-26 | 2018-06-26 | Sand layer grouting ground surface lifting control method based on borehole collapse and induced splitting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112963119A (en) * | 2021-02-03 | 2021-06-15 | 山东大学 | Induced splitting grouting reinforcement method suitable for silt silty soil stratum |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094658A (en) * | 2011-02-01 | 2011-06-15 | 北京交通大学 | Method for directed induction fracturing grouting in shallow tunnel |
| CN103867208A (en) * | 2014-03-12 | 2014-06-18 | 西安建筑科技大学 | Method for controlling deformation of ground surface and pipelines in process of tunnel and underground works construction |
-
2018
- 2018-06-26 CN CN201810670494.2A patent/CN108952758B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094658A (en) * | 2011-02-01 | 2011-06-15 | 北京交通大学 | Method for directed induction fracturing grouting in shallow tunnel |
| CN103867208A (en) * | 2014-03-12 | 2014-06-18 | 西安建筑科技大学 | Method for controlling deformation of ground surface and pipelines in process of tunnel and underground works construction |
Non-Patent Citations (2)
| Title |
|---|
| 刘光辉等: "隧道注浆加固配套系统研究", 《民营科技》 * |
| 李金明: "注浆加固技术在青岛地铁不良地质地段中的应用", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112963119A (en) * | 2021-02-03 | 2021-06-15 | 山东大学 | Induced splitting grouting reinforcement method suitable for silt silty soil stratum |
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| Publication number | Publication date |
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| CN108952758B (en) | 2020-11-06 |
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