CN109594575A - A kind of open caisson periphery grouting and reinforcing soil body construction method - Google Patents
A kind of open caisson periphery grouting and reinforcing soil body construction method Download PDFInfo
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- CN109594575A CN109594575A CN201811596680.2A CN201811596680A CN109594575A CN 109594575 A CN109594575 A CN 109594575A CN 201811596680 A CN201811596680 A CN 201811596680A CN 109594575 A CN109594575 A CN 109594575A
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- open caisson
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- 238000010276 construction Methods 0.000 title claims abstract description 43
- 239000002689 soil Substances 0.000 title claims abstract description 29
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 22
- 238000007569 slipcasting Methods 0.000 claims abstract description 63
- 239000002002 slurry Substances 0.000 claims abstract description 38
- 238000005553 drilling Methods 0.000 claims abstract description 24
- 239000011440 grout Substances 0.000 claims abstract description 17
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 238000005259 measurement Methods 0.000 claims abstract description 8
- 238000009826 distribution Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 21
- 239000003673 groundwater Substances 0.000 claims description 12
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 239000004568 cement Substances 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 239000004570 mortar (masonry) Substances 0.000 claims description 5
- 238000000151 deposition Methods 0.000 claims description 4
- 238000013461 design Methods 0.000 claims description 4
- 241000256135 Chironomus thummi Species 0.000 claims description 3
- 238000005520 cutting process Methods 0.000 claims description 2
- 230000011218 segmentation Effects 0.000 claims description 2
- 229920002472 Starch Polymers 0.000 claims 1
- 235000019698 starch Nutrition 0.000 claims 1
- 230000006641 stabilisation Effects 0.000 abstract description 2
- 238000011105 stabilization Methods 0.000 abstract description 2
- 230000002159 abnormal effect Effects 0.000 description 10
- 239000004744 fabric Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000009955 starching Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The present invention relates to underground structrue engineering technical fields, more particularly to a kind of open caisson periphery grouting and reinforcing soil body construction method, the following steps are included: measurement and positioning, drilling, down tube and sealing of hole, slip casting and telephone-moving, construction is simple of the present invention, it can accelerate construction progress, the open caisson periphery soil stabilization being applicable under different geological conditions.Injected hole position distribution is reasonable, while constructing and being segmented jump note using every hole, starts interval skip from most outlet injected hole and infuses to most interior row's injected hole, increase pressure with slip casting elevated height simultaneously, the situation of grout or internal empty slurry can be effectively reduced, construction quality is good, and quality is easily controllable.
Description
Technical field
The present invention relates to underground structrue engineering technical fields, and in particular to a kind of open caisson periphery grouting and reinforcing soil body construction party
Method.
Background technique
With the fast development of market economy and urban construction, requirement of the people to living environment is higher and higher, to city
The demand of infrastructure is also increasingly all to be increased, and urban sewage discharge and improvement are very crucial a part.Engineering wastewater interception pipe is a large amount of
Increase, pipeline is longer, caliber is larger, needs to be continuously increased drainage pipeline and carrys out meet demand.Under normal circumstances, above and below ground condition
It is all very complicated, especially old town and urban centre prosperity location, when construction can not open-cut, at this moment construction by pipeline jacking method is excellent
Gesture just can solve this problem.
Structures matched with push pipe have active well and received well, generally take mechanical or water-washed sinking construction method,
Which kind of, regardless of method for sinking used, all have a certain impact to the open caisson periphery soil body: during well sinking, because will be in open caisson
The soil body of center portion position is dug out, the grogs on open caisson periphery by underground water osmosis and generate seepage flow.With the sinking of open caisson,
Loss, the sinking of the grogs that its periphery is lost from bottom to top, from the near to the distant, the pot bottom-shape ultimately formed centered on open caisson are recessed
Ground, the range and depth of surface depression have great with height, soil layer water penetration power, the well sinking depth of level of ground water etc.
Relationship.Under normal circumstances, level of ground water is higher, soil layer seepage of water is stronger, and surface subsidence range and depth are bigger, on the contrary then small.
If encountering the dark creek in special underground, undercut, land subsidence, inclination will aggravations.It is right if not taking any measure in well sinking
Periphery pipe engineering, building, structures, road engineering will affect, and will cause pipeline when serious by drawing crack, build
Build object, structures, road foundation uneven settlement and the adverse effects such as destroyed.It was heavy in the past to eliminate this some effects
Well periphery use antiseepage stake and water-stop curtain working measure, although can to avoid or reduce the periphery soil body be lost, investment compared with
Greatly, especially when open caisson is deeper, investment is bigger, therefore its adaptability has certain limitation.
Summary of the invention
In view of the deficiencies in the prior art and problem, the present invention provide a kind of open caisson periphery grouting and reinforcing soil body construction
Method.
The present invention solves scheme used by its technical problem: a kind of open caisson periphery grouting and reinforcing soil body construction method,
The following steps are included: measurement and positioning, drilling, down tube and sealing of hole, slip casting and telephone-moving, every procedure specifically:
Step 1: measurement and positioning:
(1) determine grouting and reinforcing range: measurement well sinking depth, level of ground water, soil property type determine grouting and reinforcing range,
Guarantee the injected hole that no less than 3 rows are disposed with outside open caisson, wherein slip casting hole depth is from original place table to blade foot bottom, and slip casting depth is
Caisson cutting edge bottom to level of ground water top, level of ground water range above are not necessarily to slip casting；
(2) determine injected hole distributing position: injected hole is in the in a row distribution of open caisson outer annular, close to the first row injected hole of open caisson
Away from open caisson outer wall 1.2-1.8m, the array pitch of adjacent two rows injected hole is 0.8-1.2m, adjacent two injected hole between every row's injected hole
Spacing be 0.8-1.2m, making injected hole is integrally in quincuncial arrangement；
Step 2: drilling:
Drilling uses down-the-hole drill, and drilling is not more than 10cm using revolution mode or impact mode, bore position and height variation；
Boring aperture is 80-120mm；
Step 3: down tube and sealing of hole:
Grouting Pipe uses the iron pipe of 2mm thickness, diameter 23-27mm, and being provided on the pipeline section of Grouting Pipe lower part 2-4m high makes slurries outflow
Solution cavity, by Grouting Pipe tripping in injected hole and keep it is parallel with injected hole side wall, on the injected hole on the outside of Grouting Pipe at aperture
It is sealed using cement slurry；Sealing of hole hole to be drilled can carry out mortar depositing construction after completing 24 hours；
Step 4: slip casting:
(1) Grouting Pipe starts the slip casting into Grouting Pipe after reaching design altitude, from the outlet injected hole far from open caisson to close to heavy
The direction of interior row's injected hole of well distributes multiple order holes, according to order respectively to each Grouting Pipe carry out slip casting, i.e., using every
Note is jumped in hole segmentation, is started interval skip from most outlet injected hole and is carried out slip casting to most interior row's injected hole；
(2) starting grouting pressure is controlled in 0.4-0.6MPa, the corresponding grouting pressure of the every raising 1m of slip casting increases 0.02-
0.05Mpa；
(3) determine whether hole is filled with by the grouting amount of encryption injected hole, i.e., the slip casting in the case where controlling pressure of each injected hole
Amount is less than 0.10m3, it is believed that injected hole has been expired, and is entered immediately with the upper end that dry cement blocks Grouting Pipe after slip casting is full in injected hole
Mouthful；
Step 4: slip casting machine is moved into next job location.
Further, further include abnormal conditions counter-measure, bring difficulty in the drilling hole that occurs collapsing to pore-forming or cause to infuse
When bottom hole cannot smoothly be arrived down by starching pipe, casing retaining wall can be used and first creep into heel into casing.
It further, further include abnormal conditions counter-measure, when slurries are serious from injected hole hole wall leakage, to cement slurry
Middle addition accelerator, and handled by the way of gradation slip casting.
It further, further include abnormal conditions counter-measure, when there are slurries out of this injected hole and emerging earth's surface situation,
Grouting pressure is reduced, while improving concentration of slurry.
It further, further include abnormal conditions counter-measure, when there are slurries out of this injected hole and emerging earth's surface situation,
Limitation slip casting is taken, control unit midge amount is no more than 20L/min-30L/min.
It further, further include abnormal conditions counter-measure, when there are slurries out of this injected hole and emerging earth's surface situation,
Using the method for interval slip casting, i.e., stop filling after discovery grout, be filled again to 10-20 or so.
Further, further include abnormal conditions counter-measure, emerge ground expression when there are slurries from other neighbouring injected holes
When condition, increases order pitch of holes and increase construction order.
Further, further include abnormal conditions counter-measure, emerge ground expression when there are slurries from other neighbouring injected holes
When condition, extend the interval of two neighboring order hole construction time, previous order hole slurries is made to solidify or have some strength substantially
Afterwards, then sequentially secondary drilling after starting.
Further, further include abnormal conditions counter-measure, emerge ground expression when there are slurries from other neighbouring injected holes
When condition, grout leaking hole if to grout, take and meanwhile the method for parallel-connected grouting handle, if grout leaking hole is drilling, then stop bore closing
Aperture restores to drill again after slip casting is complete.
Beneficial effects of the present invention: open caisson periphery grouting and reinforcing soil body construction method of the invention, constructing operation is simple, can
It accelerates construction progress, the open caisson periphery soil stabilization being applicable under different geological conditions.Injected hole position distribution is reasonable, constructs simultaneously
Note is jumped using being segmented every hole, interval skip is started from most outlet injected hole and is infused to most interior row's injected hole, while with slip casting height
Degree, which is promoted, increases pressure, can effectively reduce the situation of grout or internal empty slurry, construction quality is good, and quality is easily controllable.At
This is cheap, economical and practical.Open caisson periphery grogs can be effectively reduced with the situation of seepage action of ground water, substantially improve open caisson periphery
Surface depression.
Detailed description of the invention
Fig. 1 is the location map of open caisson periphery of the present invention injected hole；
Fig. 2 is the entirety sectional view of open caisson periphery of the present invention injected hole；
Fig. 3 is the elevation of injected hole；
Fig. 4 is the cross-sectional structure schematic diagram of injected hole；
Fig. 5 is the structural schematic diagram of Grouting Pipe；
Fig. 6 is rectangle cloth hole schematic diagram；
Fig. 7 is quincunx cloth hole schematic diagram.
In figure: 1- open caisson, 2- injected hole, 3- Grouting Pipe, 4- solution cavity, the sealing of 5- pipe cap.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
Embodiment 1: a kind of open caisson periphery grouting and reinforcing soil body construction method of the invention is navigated in Zhengzhou as shown in figs. 1-7
Implementation process in the rapid engineering third bid section sewage pipe-jacking project in airport economic comprehensive test region riverfront West Road is as follows:
It is reported according to geological analysis provided by engineering investigation institute, foundation soil is divided into 7 layers from top to bottom, and soil quality stabilizing is poor,
This engineering is located in the poor silty sand ground of soil property, and underground water is extremely abundant, and level of ground water at 7 meters, was being sunk below earth's surface
Phenomena such as piping is easily generated in journey；
Select the slip casting ratio of mud for 0.5:1；Slurries are made of cement special blender, and mixing time is no less than 5min.
(1) grouting and reinforcing range: outer 5 meters of 1 borehole wall of open caisson to well outer wall slip casting, slip casting depth is blade foot bottom to below ground
7m, 7 meters of range above of level of ground water are not necessarily to slip casting.
(2) injected hole horizontal layout: 3 row's Grouting Pipes (25 iron pipe) is arranged on the outside of active well, received well, inside first row
Away from open caisson outer wall 1.5m, array pitch 1.0m, injected hole (100mm) spacing is 1.0m, quincuncial arrangement, slip casting hole depth between every row
Degree is from original place table to blade foot bottom.
2, operational procedure and method:
(1) mortar depositing construction process:
Measurement and positioning-drill-squeezes into Grouting Pipe-sealing of hole-slip casting-telephone-moving
(2) it drills
1) drilling uses down-the-hole drill；
2) by transverse direction and longitudinal direction spacing shown in " strengthening of foundation floor plan ", drill position
It sets and height variation is no more than 10cm；
3) drilling machine wants accurate, firm in place, and drilling rod verticality and pile position deviation etc. should all control
In specification allowed band.
4) boring aperture is 100mm, it is therefore intended that can be smoothly lower to bottom hole by Grouting Pipe 3, it creeps into and uses revolution mode or impact
Mode；
5) as the drilling hole that occurs collapsing brings difficulty to pore-forming or causes Grouting Pipe smoothly lower to 2 bottom of injected hole, set can be used
It manages and protects wall and first creeps into heel into casing.
(3) down tube and sealing
1) to better ensure that construction quality, this project is using thick 25 iron pipes of 2mm；Sealing 5 is sealed with pipe cap in Grouting Pipe lower end,
The solution cavity 4 for making slurries outflow is provided on the pipeline section of Grouting Pipe lower part 2-4m high；
2) in the thick 25 iron pipe tripping in holes 2mm and it will keep vertical；
3) level of ground water is to original ground, using cement slurry sealing of hole.
(4) slip casting
1) mortar depositing construction can be carried out after drilling and sealing 24 hours；
2) sequence of slip casting is inwardly arranged in slip casting using first outlet, is jumped and is infused every hole；Injected hole is from 5 meters on the outside of the borehole wall to well center cloth
It sets, pitch-row 1m, is in plum blossom cross arrangement, comparison diagram 6 and Fig. 7, from the point of view of the rectangular cloth hole pattern of Fig. 6, in " the center of gravity of rectangle
Easily there is slip casting blind area in position ", and realizes optimal overlap joint when the quincunx cloth hole of Fig. 7, between the row of hole, is less prone to slip casting blind area.
Therefore, when injected hole cloth hole designs, making injected hole is integrally in quincuncial arrangement.
3) pressure is determined by test by designing institute when slip casting；
Grouting Pipe starts slip casting, the pressure value and earth formation of slip casting, initial slip casting position and slip casting after reaching design altitude
Order, mode etc. it is closely bound up, part of factor is difficult to accurately obtain, therefore before slip casting, it is necessary to carry out live slip casting
The size for determining grouting pressure is tested, when grouting test, usually using the method for stepping up grouting pressure, finds out grouting pressure
With grouting amount relation curve, once pressure rise, to a certain numerical value, grouting amount suddenly increases, then it represents that earth formation is destroyed
Or void size is extended, and it at this moment can be using pressure value at this time as the determining foundation for allowing grouting pressure.By testing,
Starting grouting pressure is controlled in 0.4-0.6MPa, every raising 1m pressure increase 0.02-0.05MPa.
4) when pressure is flown up or overflows slurry from hole wall, ground, stop slip casting immediately.
5) section gap slip casting is taken to avoid generating grout.Start interval skip from open caisson both ends to be infused to well center
Slurry.After, boxed out hole is blocked with dry cement in time, prevents grout, spillage.
6) it checked oneself, mutually looked into daily, the various situations such as hole location, grouting amount, grouting pressure, Mortar mix proportion are recorded.
3, the control of slip casting effect
Hole whether be filled be grouting consolidation effect important indicator, therefore:
(1) the standard of end hole end hole must be strictly pressed during slip casting；
(2) determined by the grouting amount of encryption injected hole, general every hole grouting amount in the case where controlling pressure is less than 0.10m3, it is believed that
Expire.
4, construction note
It needs to perform construction note, the exception in record drilling time, boring procedure in construction work
Situation, abnormal conditions, material utilization amount during slip casting time, slip casting etc..
The principle for following informational construction fills in construction original record according to on-site actual situations, and sidegating effect signature is true
Recognize, timely finishing collecting construction information, analyzes, adjusts, improving arrangement and method for construction, and as the important evidence finally settled accounts.
5, abnormal conditions counter-measure
(1) since the hard impurity in place is more, permeability is strong, cement slurry leakage such as occurs seriously, nothing
Method returns slurry, then adds accelerator, and handle by the way of gradation slip casting.
(2) during slip casting, discovery slurries are emerged earth's surface i.e. grout, take property measure control as follows:
1. reducing grouting pressure, while improving concentration of slurry；
2. slip casting of limiting the quantity, control unit midge amount is no more than 20L/min-30L/min or smaller；
3. the method for using interval slip casting is just stopped to fill, be filled again again to 15min or so after discovery grout.
(3) during slip casting, it is grouts when slurries are flowed out from other drillings nearby, following method is taken to handle:
1. increasing order pitch of holes increases construction order；
2. the interval of two neighboring order hole construction time is appropriately extended, makes previous order hole in mobilization
After slurries solidify substantially or have some strength, then sequentially secondary drilling after starting；
3. grout leaking hole if to grout, take and meanwhile the method for parallel-connected grouting handle, if grout leaking hole is drilling, then stop bore closing
Aperture restores to drill again after slip casting is complete.
Claims (9)
1. a kind of open caisson periphery grouting and reinforcing soil body construction method, it is characterised in that: the following steps are included: measurement and positioning, drilling,
Down tube and sealing of hole, slip casting and telephone-moving, every procedure specifically:
Step 1: measurement and positioning:
(1) determine grouting and reinforcing range: measurement well sinking depth, level of ground water, soil property type determine grouting and reinforcing range,
Guarantee the injected hole that no less than 3 rows are disposed with outside open caisson, wherein slip casting hole depth is from original place table to blade foot bottom, and slip casting depth is
Caisson cutting edge bottom to level of ground water top, level of ground water range above are not necessarily to slip casting；
(2) determine injected hole distributing position: injected hole is in the in a row distribution of open caisson outer annular, close to the first row injected hole of open caisson
Away from open caisson outer wall 1.2-1.8m, the array pitch of adjacent two rows injected hole is 0.8-1.2m, adjacent two injected hole between every row's injected hole
Spacing be 0.8-1.2m, making injected hole is integrally in quincuncial arrangement；
Step 2: drilling:
Drilling uses down-the-hole drill, and drilling is not more than 10cm using revolution mode or impact mode, bore position and height variation；
Boring aperture is 80-120mm；
Step 3: down tube and sealing of hole:
Grouting Pipe using 2mm, sealed with pipe cap by thick, diameter 23-27mm iron pipe, Grouting Pipe lower end, Grouting Pipe lower part 2-4m
Be provided on high pipeline section make slurries outflow solution cavity, by Grouting Pipe tripping in injected hole and keep it is parallel with injected hole side wall, infuse
It starches and is sealed at aperture using cement slurry on the injected hole on the outside of pipe；Sealing of hole hole to be drilled can carry out mortar depositing construction after completing 24 hours；
Step 4: slip casting:
(1) Grouting Pipe starts the slip casting into Grouting Pipe after reaching design altitude, from the outlet injected hole far from open caisson to close to heavy
The direction of interior row's injected hole of well distributes multiple order holes, according to order respectively to each Grouting Pipe carry out slip casting, i.e., using every
Note is jumped in hole segmentation, is started interval skip from most outlet injected hole and is carried out slip casting to most interior row's injected hole；
(2) starting grouting pressure is controlled in 0.4-0.6MPa, the corresponding grouting pressure of the every raising 1m of slip casting increases 0.02-
0.05Mpa；
(3) determine whether hole is filled with by the grouting amount of encryption injected hole, i.e., the slip casting in the case where controlling pressure of each injected hole
Amount is less than 0.10m3, it is believed that injected hole has been expired, and is entered immediately with the upper end that dry cement blocks Grouting Pipe after slip casting is full in injected hole
Mouthful；
Step 4: slip casting machine is moved into next job location.
2. a kind of open caisson periphery grouting and reinforcing soil body construction method according to claim 1, it is characterised in that: further include different
Reason condition counter-measure, drilling occur collapsing hole to pore-forming bring difficulty or cause Grouting Pipe cannot smoothly it is lower to bottom hole when, can
Heel is first crept into casing using casing retaining wall.
3. a kind of open caisson periphery grouting and reinforcing soil body construction method according to claim 1, it is characterised in that: further include different
Reason condition counter-measure adds accelerator into cement slurry, and using note by several times when slurries are serious from injected hole hole wall leakage
The mode of slurry is handled.
4. a kind of open caisson periphery grouting and reinforcing soil body construction method according to claim 1, it is characterised in that: further include different
Reason condition counter-measure reduces grouting pressure, while improving slurries when there are slurries out of this injected hole and emerging earth's surface situation
Concentration.
5. a kind of open caisson periphery grouting and reinforcing soil body construction method according to claim 1, it is characterised in that: further include different
Reason condition counter-measure takes limitation slip casting, controls unit midge when there are slurries out of this injected hole and emerging earth's surface situation
Amount is no more than 20L/min-30L/min.
6. a kind of open caisson periphery grouting and reinforcing soil body construction method according to claim 1, it is characterised in that: further include different
Reason condition counter-measure using the method for interval slip casting, that is, is found when there are slurries out of this injected hole and emerging earth's surface situation
Stop to fill after grout, be filled again to 10-20 or so.
7. a kind of open caisson periphery grouting and reinforcing soil body construction method according to claim 1, it is characterised in that: further include different
Reason condition counter-measure increases order pitch of holes and increases when slurries occur and emerging earth's surface situation from other neighbouring injected holes
Construction order.
8. a kind of open caisson periphery grouting and reinforcing soil body construction method according to claim 1, it is characterised in that: further include different
Reason condition counter-measure extends two neighboring order hole and applies when slurries occur and emerging earth's surface situation from other neighbouring injected holes
Interval between working hour, after solidifying previous order hole slurries substantially or there is some strength, then sequentially secondary drilling after starting.
9. a kind of open caisson periphery grouting and reinforcing soil body construction method according to claim 1, it is characterised in that: further include different
Reason condition counter-measure, when slurries occur and emerging earth's surface situation from other neighbouring injected holes, grout leaking hole is taken if to grout
The method processing of parallel-connected grouting simultaneously then stops to bore closed orifices, restores to drill again after slip casting is complete if grout leaking hole is drilling.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112392487A (en) * | 2020-12-09 | 2021-02-23 | 中国葛洲坝集团第一工程有限公司 | Hole digging construction method for saturated water-bearing sand soil layer under highly permeable rock mass |
| CN114046151A (en) * | 2021-10-25 | 2022-02-15 | 中交隧道工程局有限公司 | Open caisson reinforcing method suitable for shield construction |
| CN114703874A (en) * | 2022-04-15 | 2022-07-05 | 内蒙古满世煤炭集团点石沟煤炭有限责任公司 | Anti-landslide structure of strip mine refuse dump and construction method thereof |
| CN117286870A (en) * | 2023-11-23 | 2023-12-26 | 中国建筑第六工程局有限公司 | Novel intelligent grouting reinforcement method for processing complex geology |
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| JPH0925634A (en) * | 1995-07-10 | 1997-01-28 | Maeda Corp | Method of grout construction onto bedrock surface by moving truck and equipment thereof |
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| CN112392487A (en) * | 2020-12-09 | 2021-02-23 | 中国葛洲坝集团第一工程有限公司 | Hole digging construction method for saturated water-bearing sand soil layer under highly permeable rock mass |
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| CN114046151B (en) * | 2021-10-25 | 2024-04-05 | 中交隧道工程局有限公司 | Open caisson reinforcement method suitable for shield construction |
| CN114703874A (en) * | 2022-04-15 | 2022-07-05 | 内蒙古满世煤炭集团点石沟煤炭有限责任公司 | Anti-landslide structure of strip mine refuse dump and construction method thereof |
| CN114703874B (en) * | 2022-04-15 | 2024-04-30 | 内蒙古满世煤炭集团点石沟煤炭有限责任公司 | Anti-slip slope structure of strip mine dumping site and construction method thereof |
| CN117286870A (en) * | 2023-11-23 | 2023-12-26 | 中国建筑第六工程局有限公司 | Novel intelligent grouting reinforcement method for processing complex geology |
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