CN109736845A - Disturbance displacement compacting grouting construction method - Google Patents
Disturbance displacement compacting grouting construction method Download PDFInfo
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- CN109736845A CN109736845A CN201910074829.9A CN201910074829A CN109736845A CN 109736845 A CN109736845 A CN 109736845A CN 201910074829 A CN201910074829 A CN 201910074829A CN 109736845 A CN109736845 A CN 109736845A
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- Prior art keywords
- slip casting
- grouting
- hole
- construction method
- pressure
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- 238000010276 construction Methods 0.000 title claims abstract description 24
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 22
- 238000007569 slipcasting Methods 0.000 claims abstract description 66
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000002002 slurry Substances 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 16
- 238000007596 consolidation process Methods 0.000 claims abstract description 11
- 230000008569 process Effects 0.000 claims abstract description 10
- 239000011257 shell material Substances 0.000 claims abstract description 7
- 230000006378 damage Effects 0.000 claims abstract description 3
- 239000004568 cement Substances 0.000 claims description 6
- 235000019353 potassium silicate Nutrition 0.000 claims description 6
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 6
- 238000005553 drilling Methods 0.000 claims description 5
- 230000011218 segmentation Effects 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 239000004927 clay Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000000750 progressive effect Effects 0.000 claims description 3
- 238000009955 starching Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 12
- 230000002787 reinforcement Effects 0.000 abstract description 8
- 238000007789 sealing Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 238000005728 strengthening Methods 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a kind of disturbances to replace compacting grouting construction method, comprising: interval calibrates several slip casting hole locations in plum blossom-shaped at the earth's surface to slip casting section；It carries out high-pressure blast in one of slip casting hole location to drill to projected depth to disturb destruction to the stratum original structure of slip casting section and form injected hole, the diameter of injected hole is set as 80~100 millimeters；After successively merogenesis transfers Grouting Pipe to the end of injected hole in injected hole, configured sleeve shell material is injected between Grouting Pipe and injected hole；High-pressure slip-casting is carried out to carry out displacement and compacted consolidation process to Grouting Pipe using slip casting core pipe, during high-pressure slip-casting, grouting pressure is set as 8~10 megapascal；And repeat the above steps, until completing the disturbance displacement compacting grouting process to slip casting section.It is drilled by high-pressure blast, disturbance destroys the original compact texture of thin silt in advance, keeps stratum slightly loose, then high pressure injects fine grained slurries, carries out displacement and compacted consolidation, has achieved the effect that water reinforcement.
Description
Technical field
The present invention relates to Tunnel Engineering technical field more particularly to a kind of notes for water reinforcement rich water thin silt
Starch construction method.
Background technique
The aqueous rich water fine sand layer of saturation dynamic is a great problem of tunneling and underground engineering soft rock water rich strata construction,
Water burst easily occurs when tunneling is constructed in this stratum and gushes the engineering project disasters such as sand.Slurry injection technique is tunnel and underground work
The important householder method of weak surrounding rock and water rich strata is handled in journey construction.But in rich water thin silt, due to original place layer
Particle is very thin, and the mechanism of infiltration and filling slip casting cannot be applicable in.
Currently, fracture grouting progress water reinforcement is generallyd use in rich water thin silt, but fracture grouting mechanism
Although can occur under superelevation grouting pressure, because fine sand layer is very fine and close, splitting homogenate rapid pulse amount is few, cannot effective shape
At intertwining form, water plugging effect is poor.
A kind of rich water thin silt mobilism mortar depositing construction as disclosed in Chinese patent application 201310576180.3
Method, comprising: entire range of grouting is divided by sealing area, water sealing consolidation area according to stratum and groundwater condition from outside to inside
And stabilization zone；It detects formation parameter and carries out preparation of construction；Water-stop slurry is configured according to formation parameter, slip casting is carried out to sealing area and is stopped
Water；Sealing and strengthening stratum slurries are configured according to formation parameter, ejection for water plugging and strengthening stratum are carried out to water sealing consolidation area；According to
Formation parameter configures strengthening stratum slurries, carries out Grouting Consolidation to stabilization zone；Excavation area, which carries out the water pressure test, is waited for tunnel,
Infiltration coefficient is examined, and is tested to soil strength, checks slip casting effect；When inspection result is that slip casting effect is good, into
Row tunnel excavation, in inspection result be slip casting effect it is bad when, find slip casting weak link, to slip casting weak link specific aim into
Row supplement slip casting.But the invention still remains following disadvantage or deficiency: (1), this method fail to disclose how carry out slip casting add
Solid process and method；(2), slip casting is directly carried out, slip casting osmotic effect is poor, and water reinforcement effect is not significant.
Therefore it provides a kind of disturbance displacement compacting grouting construction method of water reinforcement for being suitable for rich water thin silt
As urgent problem in the industry.
Summary of the invention
The object of the present invention is to provide a kind of disturbances to replace compacting grouting construction method, is drilled by high-pressure blast, in advance
Disturbance destroy the original compact texture of thin silt, keep stratum slightly loose, then high pressure inject fine grained slurries, carry out displacement and
Compacted consolidation solves the problems, such as that rich water thin silt water plugging effect is poor, enhances the overall stability on stratum.
To achieve the goals above, the present invention provides a kind of disturbance replace compacting grouting construction method, comprising: (1), in
Several slip casting hole locations in plum blossom-shaped are calibrated to interval at the earth's surface of slip casting section；(2), in one of slip casting hole location
It carries out high-pressure blast to drill to projected depth to disturb destruction to the stratum original structure of slip casting section and form injected hole, injected hole
Diameter be set as 80~100 millimeters；(3), it after successively merogenesis transfers Grouting Pipe to the end of injected hole in injected hole, is infusing
Configured sleeve shell material is injected between slurry pipe and injected hole；High-pressure slip-casting is carried out to replace to Grouting Pipe using slip casting core pipe
With compacted consolidation process, during high-pressure slip-casting, grouting pressure is set as 8~10 megapascal；And (4) repeat step (2) and
(3), until completing the disturbance displacement compacting grouting process to slip casting section.
Preferably, in step (1), the distance between two neighboring slip casting hole location is set as 2~3 meters, it is highly preferred that phase
The distance between adjacent two slip casting hole locations are set as 1~2 meter, so that original compact texture of thin silt is effectively destroyed, pine
Stratum is dissipated, subsequent grouting for water blocking effect is convenient for.
Preferably, in step (2), the pressure of high-pressure blast is set as 2~5 standard atmospheric pressures, it is highly preferred that high-pressure blast
Pressure be set as 3~4 standard atmospheric pressures.
Selectively, it in step (2), carries out being placed with several outlet air on the peripheral wall of the air hose drill bit of high-pressure blast drilling
Mouthful, the revolving speed of air hose drill bit is set as 10~20 revs/min.
Preferably, air outlet is arranged in the shape of a spiral.
Preferably, the working time of air hose drill bit is set as 3~10 minutes, it is highly preferred that the working time of air hose drill bit
It is set as 6 minutes.
Selectively, in step (3), the diameter of Grouting Pipe is 40~60 millimeters, is equidistantly equipped in Grouting Pipe several
Group penetrates slurry hole, and every group is penetrated between slurry hole 30~50 centimetres of distance.
Preferably, Grouting Pipe is made of PVC, and the outer wall for the Grouting Pipe for penetrating slurry hole corresponding to every group is arranged with elastic tape.
Preferably, the wall thickness of Grouting Pipe is 5~6 millimeters.
Selectively, in step (3), slip casting process takes segmentation retrusive grouting process, and slip casting is segmented step pitch setting
It is 40~60 centimetres.
Selectively, in step (3), sleeve shell material includes water, cement and the clay that weight ratio is 1.5~1.6:1:1.
Preferably, in step (3), during slip casting, injection slurry include weight ratio be 1:1~0.8 cement slurry and
Waterglass slurry, wherein the concentration of waterglass slurry is set as 35 Baume degrees.
Selectively, in step (4), the high-pressure blast drilling sequences and grouting sequence of injected hole are from centrally located
The slip casting hole location progressive action of slip casting hole location around.
The beneficial effects of the present invention are: (1), pass through high-pressure blast drill, in advance disturbance destroy the original densification of thin silt
Structure keeps stratum slightly loose, then high pressure injects fine grained slurries, carries out displacement and compacted consolidation, reaches the effect of water reinforcement
Fruit；(2), it is more suitable for rich water thin silt, solves the problems, such as rich water thin silt water reinforcement, enhance stratum
Overall stability；(3), the slurries and Extra-fine sand of slip casting form complex morphological, change the attribute of thin silt completely, further
Improve grouting consolidation effect.
Detailed description of the invention
Fig. 1 shows the flow chart of disturbance displacement compacting grouting construction method of the invention.
Fig. 2 shows the structural schematic diagrams of air hose drill bit of the invention.
Specific embodiment
Disturbance displacement compacting grouting construction method of the invention is specifically described referring next to attached drawing.
Firstly, as shown in Figure 1, in step sl, if interval is calibrated in plum blossom-shaped at the earth's surface to slip casting section
Dry slip casting hole location.When setting slip casting hole location, the distance between two adjacent slip casting hole locations can be set as 2~3 meters, no
It only can guarantee that effective disturbance destroys the effect of thin silt, but also the workload of bored grouting can be reduced, reduce construction
Cost.
Then, in step s 2, select one of slip casting hole location to carry out high-pressure blast to drill to projected depth, thus real
Now disturbance, which is destroyed, obtains effect to the stratum original structure of slip casting section, has been formed simultaneously an injected hole, the diameter of injected hole is set
It is set to 80~100 millimeters.
In the non-limiting embodiment, the pressure of high-pressure blast is set as 2~5 standard atmospheric pressures, as shown in Fig. 2,
The air hose drill bit 100 for carrying out high-pressure blast drilling includes drill bit (not shown) and the air hose being connected with drill bit, and air hose is adjacent to drill bit
One section of peripheral wall on be placed with the high-pressure blasts of several 200,2~5 standard atmospheric pressures of air outlet and arranged from air outlet 200
Out, the revolving speed of air hose drill bit is set as 10~20 revs/min, and the working time is set as 3~10 minutes.
Then, in step s3, after successively merogenesis transfers Grouting Pipe to the end of injected hole in injected hole, in Grouting Pipe
Configured sleeve shell material is injected between injected hole；High-pressure slip-casting is carried out to be replaced and be squeezed to Grouting Pipe using slip casting core pipe
Close consolidation process, during high-pressure slip-casting, grouting pressure is set as 8~10 megapascal.
As a kind of non-limiting embodiment, the diameter of Grouting Pipe is 40~60 millimeters, is equidistantly equipped in Grouting Pipe
Several groups penetrate slurry hole, and every group is penetrated between slurry hole 30~50 centimetres of distance, i.e. are distributed with two groups or three groups in every meter of Grouting Pipe and penetrate slurry
Hole.
During slip casting, segmentation retrusive grouting process is taken, slip casting segmentation step pitch is set as 50 centimetres.Sleeve shell material is
Weight ratio is water, cement and the clay of 1.5~1.6:1:1, and injection slurry includes the cement slurry and water glass that weight ratio is 1:1~0.8
Glass slurry, wherein the concentration of waterglass slurry is set as 35 Baume degrees.
It is to repeat step S2 and S3, until completing the brill in whole slip castings vacancy in step s 4 after completing above-mentioned steps
Hole and slip casting, that is, complete the disturbance displacement compacting grouting process to slip casting section.
As another non-limiting embodiment, in step s 4, the high-pressure blast drilling sequences of injected hole and slip casting are suitable
Sequence is the slip casting hole location progressive action from centrally located slip casting hole location around, while also to be bored in a manner of jumping hole
Hole and slip casting, so that subsequent water reinforcement effect be effectively ensured.
Although detailed description of the present invention preferred embodiment herein, it is to be understood that the invention is not limited to this
In the specific structure being described in detail and show and step, without departing from the spirit and scope of the present invention can be by this field
Technical staff realize other modifications and variant.
Claims (10)
1. compacting grouting construction method is replaced in a kind of disturbance, comprising:
(1), interval calibrates several slip casting hole locations in plum blossom-shaped at the earth's surface to slip casting section；
(2), high-pressure blast is carried out in one of those described slip casting hole location to drill to projected depth to disturb described in destruction to slip casting
The stratum original structure of section simultaneously forms injected hole, and the diameter of the injected hole is set as 80~100 millimeters；
(3), after successively merogenesis transfers Grouting Pipe to the end of the injected hole in the injected hole, in the Grouting Pipe and institute
It states and injects configured sleeve shell material between injected hole；High-pressure slip-casting is carried out to replace to the Grouting Pipe using slip casting core pipe
With compacted consolidation process, during the high-pressure slip-casting, grouting pressure is set as 8~10 megapascal；And
(4) step (2) and (3) are repeated, until completing the disturbance displacement compacting grouting process to slip casting section.
2. disturbance displacement compacting grouting construction method as described in claim 1, which is characterized in that in step (1), adjacent two
The distance between a described slip casting hole location is set as 2~3 meters.
3. disturbance displacement compacting grouting construction method as claimed in claim 2, which is characterized in that in step (2), high-pressure blast
Pressure be set as 2~5 standard atmospheric pressures.
4. disturbance displacement compacting grouting construction method as claimed in claim 2, which is characterized in that in step (2), carry out high
It presses and is placed with several air outlets on the peripheral wall of the air hose drill bit in air drill hole, the revolving speed of the air hose drill bit is set as 10~20
Rev/min.
5. disturbance displacement compacting grouting construction method as claimed in claim 4, which is characterized in that the work of the air hose drill bit
Time is set as 3~10 minutes.
6. disturbance displacement compacting grouting construction method as claimed in claim 5, which is characterized in that in step (3), the note
The diameter for starching pipe is 40~60 millimeters, and several groups are equidistantly equipped in the Grouting Pipe and penetrate slurry hole, every group is penetrated distance between slurry hole
30~50 centimetres.
7. disturbance displacement compacting grouting construction method as claimed in claim 6, which is characterized in that in step (3), the note
Slurry process takes segmentation retrusive grouting process, and slip casting segmentation step pitch is set as 40~60 centimetres.
8. disturbance displacement compacting grouting construction method as claimed in claim 7, which is characterized in that in step (3), the set
Shell material includes water, cement and the clay that weight ratio is 1.5~1.6:1:1.
9. disturbance displacement compacting grouting construction method as claimed in claim 8, which is characterized in that in step (3), described
During slip casting, the injection slurry includes the cement slurry that weight ratio is 1:1~0.8 and waterglass slurry, wherein the waterglass slurry
Concentration be set as 35 Baume degrees.
10. disturbance displacement compacting grouting construction method as claimed in claim 9, which is characterized in that described in step (4)
The high-pressure blast drilling sequences and grouting sequence of injected hole are progressive from the slip casting hole location of centrally located slip casting hole location around
Operation.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910074829.9A CN109736845A (en) | 2019-01-25 | 2019-01-25 | Disturbance displacement compacting grouting construction method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910074829.9A CN109736845A (en) | 2019-01-25 | 2019-01-25 | Disturbance displacement compacting grouting construction method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640120A (en) * | 2016-10-31 | 2017-05-10 | 彭峰 | Ground-surface fixed-point deep hole layered grouting construction method |
| CN106837352A (en) * | 2017-01-22 | 2017-06-13 | 中南大学 | Fault belt surrounding rock tunnel construction method |
| WO2017219792A1 (en) * | 2016-06-23 | 2017-12-28 | 北京建工环境修复股份有限公司 | In situ repair system and method for in situ injection - high pressure rotary jet injection in soil and groundwater |
| CN207598184U (en) * | 2017-11-15 | 2018-07-10 | 中国水利水电第十六工程局有限公司 | Suitable for the air-driven impact formula geological drilling rig of rockfill area drilling |
| CN108951612A (en) * | 2018-07-20 | 2018-12-07 | 中铁三局集团有限公司 | A kind of subway tunnel shield end reinforcement means |
| CN109162736A (en) * | 2018-10-26 | 2019-01-08 | 中国矿业大学 | A kind of liquid mixed deep hole circulation Application of High pressure Split Grouting method of air-water mud |
-
2019
- 2019-01-25 CN CN201910074829.9A patent/CN109736845A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017219792A1 (en) * | 2016-06-23 | 2017-12-28 | 北京建工环境修复股份有限公司 | In situ repair system and method for in situ injection - high pressure rotary jet injection in soil and groundwater |
| CN106640120A (en) * | 2016-10-31 | 2017-05-10 | 彭峰 | Ground-surface fixed-point deep hole layered grouting construction method |
| CN106837352A (en) * | 2017-01-22 | 2017-06-13 | 中南大学 | Fault belt surrounding rock tunnel construction method |
| CN207598184U (en) * | 2017-11-15 | 2018-07-10 | 中国水利水电第十六工程局有限公司 | Suitable for the air-driven impact formula geological drilling rig of rockfill area drilling |
| CN108951612A (en) * | 2018-07-20 | 2018-12-07 | 中铁三局集团有限公司 | A kind of subway tunnel shield end reinforcement means |
| CN109162736A (en) * | 2018-10-26 | 2019-01-08 | 中国矿业大学 | A kind of liquid mixed deep hole circulation Application of High pressure Split Grouting method of air-water mud |
Non-Patent Citations (3)
| Title |
|---|
| 宋宝钟: "岩巷风钻打眼", 31 March 1997, 煤炭工业出版社, pages: 8 - 25 * |
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