CN207974823U - A kind of grouting pipeline structure of deep hole grouting - Google Patents
A kind of grouting pipeline structure of deep hole grouting Download PDFInfo
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- CN207974823U CN207974823U CN201820299115.9U CN201820299115U CN207974823U CN 207974823 U CN207974823 U CN 207974823U CN 201820299115 U CN201820299115 U CN 201820299115U CN 207974823 U CN207974823 U CN 207974823U
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- grouting
- pipe
- aperture
- slip casting
- hole
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Abstract
The utility model discloses a kind of grouting pipeline structure of deep hole grouting, including aperture Grouting Pipe, aperture exhaust pipe and grouting pump, shown aperture Grouting Pipe and aperture exhaust pipe are inserted at injected hole 50~100mm of bottom, and aperture exhaust pipe usesPlastic tube, the hole between face and conduit is closed using Anchor Agent, mortar leakage prevention, high pressure valve is installed on aperture Grouting Pipe and aperture exhaust pipe, high pressure valve is closed, aperture Grouting Pipe connects mixer with aperture exhaust pipe, and mixer connects grouting pump by feed pipe for mortar, valve, the input terminal connection cement mortar and waterglass slurries of grouting pump are installed on feed pipe for mortar；Slurries are injected in conduit steel pipe using hydraulic pressure slip casting machine, slip casting uses aperture Grouting Pipe slip casting, aperture exhaust pipe and Grouting Pipe, controls switch by valve, mortar leakage prevention ensures that the inexcessive slurry of slip casting, running pulp, slip casting effect are good.
Description
Technical field
The utility model is related to shield well adit construction field, the grouting pipeline structures of specifically a kind of deep hole grouting.
Background technology
Deep hole grouting can be closely knit by the filling of different geology soil layers, changes original soil body and physical property, increases the close of the soil body
Degree, improves its resistance to compression, anti-interference fatigue resistance, reaches the part water-stagnating effect of the soil body, particularly with horizontal towards stone section construction shield well
Pebble layer involved by channel transition and widened section has good consolidation effect.
Deep hole grouting refers to uniform from slip casting duct with cement mortar (modified water glass/cement mortar-waterglass slurries/phosphoric acid)
Ground injects in the soil body, by filling, infiltration and it is compacted etc. in a manner of, drive away the moisture and gas between soil particle, and fill its position, lead to
It crosses contained mineral in slurries and hydrolysis, hydration reaction and granulationn etc. occurs respectively with the water and soil in the soil body, form suspension colloid
Body and granule so that the slurries for not flowing and consolidating are filled in particulate interspaces, formation intensity is big after hardening, it is small and anti-to compress
The soil body that oozing property is high, has good stability makes the reduction of soil layer water penetration, and forms relative water resisting layer.
During constructing shield well adit construction, slurries gelling time can be changed by adjusting grout coordinate ratio, especially
It can preferably fill soil layer gap in the larger cobble of infiltration coefficient, medium coarse sand, Extra-fine sand, reach the sealing effect of the soil body
Fruit, it is ensured that dry slot construction.
Utility model content
The purpose of this utility model is to provide a kind of grouting pipeline structure of deep hole grouting, transverse passage-way choose high changeover portion,
Transverse passage-way chooses 1.5m models other than the arch advanced deep hole grouting sealing ranging from excavation contour line of high section and shield launching widened section
0.5 meter of range in the soil body and profile is enclosed, injected hole arrangement is determined according to on-site actual situations.Deep hole note, which often recycles at position, to be both needed to
Net spray 80mm thickness concrete is as wall for grouting, to solve the problems mentioned in the above background technology.
To achieve the above object, the utility model provides the following technical solutions：
A kind of grouting pipeline structure of deep hole grouting, including aperture Grouting Pipe, aperture exhaust pipe and grouting pump, shown aperture
Grouting Pipe and aperture exhaust pipe are inserted at injected hole 50~100mm of bottom, and aperture Grouting Pipe connects mixer with aperture exhaust pipe, are mixed
Clutch connects grouting pump by feed pipe for mortar, and valve, the input terminal connection cement mortar and waterglass of grouting pump are equipped on feed pipe for mortar
Slurries.
As further program of the utility model：The aperture exhaust pipe isPlastic tube is closed by Anchor Agent
High pressure valve is installed on hole between face and conduit, aperture Grouting Pipe and aperture exhaust pipe.
As further program of the utility model：Deep hole grouting depth 12m, excavation length 10m, injected hole diameter of phi
43, quincuncial arrangement, shield launching section transverse passage-way slip casting depth is 4m, is retrusive segmenting slip casting.
As further program of the utility model：The slip casting pitch of holes 500mm, injected hole set two rows, blossom type
Arrangement, injected hole diameter of phi 43mm, slip casting angle are within the scope of 18 °~25 °.
As further program of the utility model：Drilling is all-hydraulic drill and pneumatic drilling machine, and bore diameter is more than note
3~5mm of pipe diameter is starched, drilling isHole depth be more than design length 100mm, air drill trepanning, in addition limb drill outward,
Grouting Pipe is installed in time after the completion of drilling.
As further program of the utility model：Grouting pressure is controlled in 0.3~0.5MPa.
As further program of the utility model：Measure the relational expression between slurries grouting amount in sealing soil body side：
Q=η α β V
The total soil stabilization grouting amount m3 of Q-；Measure m3 in total soil body side that V-to be reinforced；η-formation pore rate；α-slurries exist
Effective volumetric efficiency in stratum；β-slurries waste, takes 1.0~1.2；L-slip casting length m.
Compared with prior art, the utility model has the beneficial effects that：A kind of grouting pipeline knot of the deep hole grouting
Structure is injected slurries in conduit steel pipe using hydraulic pressure slip casting machine, and slip casting uses aperture Grouting Pipe slip casting, aperture exhaust pipe and slip casting
Pipe controls switch by valve, and mortar leakage prevention ensures that the inexcessive slurry of slip casting, running pulp, slip casting effect are good.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Specific implementation mode
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Referring to Fig. 1, in the utility model embodiment, a kind of grouting pipeline structure of deep hole grouting, including aperture slip casting
Pipe, aperture exhaust pipe and grouting pump, shown aperture Grouting Pipe and aperture exhaust pipe are inserted at injected hole 50~100mm of bottom, aperture
Exhaust pipe usesPlastic tube closes the hole between face and conduit using Anchor Agent, mortar leakage prevention, aperture Grouting Pipe and
High pressure valve is installed on the exhaust pipe of aperture, closes high pressure valve, aperture Grouting Pipe connects mixer with aperture exhaust pipe, and mixer is logical
Feed pipe for mortar connection grouting pump is crossed, valve, the input terminal connection cement mortar and waterglass slurries of grouting pump are installed on feed pipe for mortar.
It should be strongly noted that
1) grouting parameter：Deep hole grouting depth 12m, excavation length 10m, slip casting pitch of holes are true according to live physical condition
It is fixed, injected hole diameter of phi 43, quincuncial arrangement.Shield launching section transverse passage-way slip casting depth is 4m, using retrusive segmenting slip casting.
2) slip casting cloth hole：Slip casting pitch of holes 500mm, injected hole set two rows, blossom type arrangement, injected hole diameter of phi
43mm, slip casting angle are within the scope of 18 °~25 °, and injected hole and slip casting angle can be adjusted according to field condition.
First according to design drawing hole position, drilling parameter, bore position is released, paint is used in combination to demarcate.
3) it drills：All-hydraulic drill and pneumatic drilling machine are selected in drilling, and bore diameter should be greater than slip casting pipe diameter 3~5mm, and one
As drillHole depth is more than design length 100mm.It has been drilled with the angularly outer drilling of the extrapolation of design using air drill trepanning
Grouting Pipe is installed in time at rear, avoids the occurrence of collapse hole.
First according to design drawing drilling parameter, bore position (being determined according to on-site actual situations) is released, paint is used in combination to demarcate.
Drill pipe angle is adjusted, prism is placed on the tail end of drilling rod by mobile drill by drill bit alignment hole position, and drilling rod is checked with total powerstation
Posture, and be adjusted.
Drilling is carried out by the sequence of first inner ring, rear outer ring, and outer ring drilling can refer to the sequence of inner ring drilling, and postorder hole can be examined
The slip casting effect in preamble hole is looked into, on the one hand grouting parameter can be adjusted according to drilling situation by gradually encrypting slip casting, if on the other hand sending out
Existing slip casting effect has reached design requirement, you can the drilling for carrying out next collar aperture reduces the workload of drilling, quickening construct into
Degree.It performs borehole log when drilling, including hole number, drilling depth, the beginning and ending time, water burst position, water yield and water burst pressure occurs.
Borehole cleaning clears up boring mud using high-pressure blast from bottom hole to aperture.
4) slip casting
1. selection and the dosage of slurries
This bid section water-bearing layer is mainly cobble, medium coarse sand, Extra-fine sand, and infiltration coefficient is larger, the selection of grouting modified water glass
With cement mortar dual slurry, grouting pressure control is in 0.3~0.5MPa, the cooperation of specific waterglass and cement mortar when grouting pressure
It can be determined according to test section soil stabilization and geological condition.
The slurries of the features such as slurries, permeability strong, rapid hardening strong using mobility
A liquid：Cement mortar uses normal silicate P.O42.5 cement, and match ratio is water:Cement=1:1.
B liquid：Waterglass uses concentration 42Be', and match ratio is water:Waterglass=1:1.
A liquid and B liquid, A liquid is selected to match 1 with B liquid when slip casting according to field condition:1.Mainly based on A liquid and B liquid.Root
Accelerator is added according to slip casting situation.
It is A liquid and B liquid 30s~90s to prepare dual slurry slurries gel time.
Grouting amount is calculated by sealing soil body side amount or slurries grouting amount, and following equation is that sealing soil body side amount is noted with slurries
Relational expression between slurry amount：
Q=η α β V
The total soil stabilization grouting amount m3 of Q-；
Measure m3 in total soil body side that V-to be reinforced；η-formation pore rate；
The effective volumetric efficiency of α-slurries in the earth formation；β-slurries waste, takes 1.0~1.2；
L-slip casting length m；
2. the setting of Grouting Pipe
Slip casting uses aperture Grouting Pipe slip casting, aperture exhaust pipe and Grouting Pipe, controls switch by valve, exhaust pipe usesPlastic tube is inserted at 50~100mm of bottom hole, then connects the various pipelines such as Grouting Pipe, and face is closed using Anchor Agent
Hole between conduit, mortar leakage prevention.Aperture valve is closed, grouting pump is opened and carries out pipeline packer permeability test, it is timely if any leakage
Maintenance, test pressure are equal to final grouting pressure.
5) grout injection control
1. waterglass slurries use mixer slurrying, slurries are injected in conduit steel pipe using hydraulic pressure slip casting machine, before slip casting
It first checks pipeline and mechanical condition, makees mud jacking experiment after confirming normally, determine rational grouting parameter, construct according to this.
2. slip casting is completed in two steps, the slurries of first time slip casting carry out second of slip casting after fully shrinking.Note is taken in slip casting
Slurry final pressure and grouting amount dual control, grouting pressure are advisable with 0.3~0.5MPa, are held 3~5s of pressure and are stopped noting, grouting amount is generally 1.5 times
Drill volume.If grouting amount, which transfinites, is still not up to pressure requirements, adjustment concentration of slurry continues slip casting, until meeting grouting quality mark
It is accurate.Ensure to be slurries filling around drilling surrounding rock body and steel pipe.Grouting pressure such as increases suddenly, and row is applied again after ascertaining the reason
Work.
3. using the slip casting at a slow speed of small pressure according to strata condition when starting slip casting, sealed when being promoted to specific soil layer
Hole, slip casting carry out sealing of hole using slurries self-characteristic.Stringent control pumpback amplitude, often walks and is not more than 20cm, at the uniform velocity pumpback pays attention to
Driller parameters change.Stringent control grouting pressure, while pressure gauge is paid close attention to, it is starched when pressure flies up or overflows from hole wall
When, slip casting should be stopped immediately, the adjustment measures such as grouting design parameter or displacement slip casting again is taken after ascertaining the reason.Slip casting is completed
Afterwards, take measures is answered to ensure the inexcessive slurry of slip casting, running pulp.
4. conduit construction installs stop grouting plug before completing grouting behind shaft or drift lining to institute's perforation, while line up is sealed with aperture side
Processing.
5. slip casting process answers journey that special messenger is sent to be responsible for, fill in " slip casting record sheet ", record slip casting time, slurry consumption amount and note
The data such as pressure are starched, pressure tabular value is observed, communication apparatus is monitored, avoids being abnormal situation because pressure surges.
6) slip casting effect judges
1. analytic approach：Slip casting is recorded for statistical analysis, checks whether reach slip casting ending standard per pore pressure force flow,
Whether there is or not spillage, grout leaking situation, inverse grout mixings；Check whether all injected holes of this cycle have been carried out in accordance with regulations slip casting,
Whether there is or not leakage note or can not slip casting the case where, judge slip casting effect.
2. macroscopic examination method：Slurries spread condition is observed in digging process, whether stratum reaches effective consolidation, whether there is or not
Next grouting parameter is improved and changed to leak and drift sand phenomenon.
7) abnormal conditions are handled
In boring procedure, prominent mud situation is met, stop to bore immediately, extract drilling rod, mounting hole pipe and high pressure valve, noted
Slurry.
If face rimala spillage, crack first is clogged with the flax silk that cement mortar impregnated, and adjust grout coordinate ratio, shortened
Gel time；If still running pulp, using brill Shallow hole grouting consolidation at spillage；
When grouting pressure increases suddenly, then neat slurry or clear water are only noted, when pump pressure restores normal, then row biliquid note
Slurry；If pressure does not restore normal, stop slip casting, checks whether pipeline blocks.
When grout absorption is very big, lengthy pressure does not increase, then adjusts concentration of slurry and match ratio, shortens gel time, takes
Small flow, low-pressure slip casting；Sometimes intermittent slip casting can also be carried out, interval time is no more than slurries gel time.
8) Safety assurance measures
1) labour protection of operating personnel
1. drilling machine operating personnel will wear anti-dust mask.
2. operating personnel is equipped with safety cap, gloves by regulation.
2) bore operation construction safety
1. the pressure and speed grasping trepanning and normally creep into prevent disconnected bar accident.
2. bit freezing, inclined hole, hole failure of collapsing such as occur in drilling, treatment measures should be taken in time.
3. carry out paying attention to cooperation with rig operations hand when drilling rod handling, start before avoiding drilling rod from not installing cause personnel by
Wound.
3) conduit mortar depositing construction safety
1. mud deslagging drilling machine, will perform draining and mud pit, pollution environment is avoided.
2. when conduit slip casting, construction personnel will avoid face Grouting Pipe.
3. running check and the slip casting pipe fitting for replacing damage in time.
The utility model is not limited to above-described embodiment, on the basis of technical solution disclosed by the utility model, this
For the technical staff in field according to disclosed technology contents, not needing performing creative labour can be special to some of which technology
Sign makes some simple modification, equivalent change and modifications, is all within the scope of the technical scheme of the utility model.
Claims (7)
1. a kind of grouting pipeline structure of deep hole grouting, including aperture Grouting Pipe, aperture exhaust pipe and grouting pump, feature exist
In shown aperture Grouting Pipe and aperture exhaust pipe are inserted at injected hole 50~100mm of bottom, and aperture Grouting Pipe and aperture exhaust pipe connect
Mixer is connect, mixer connects grouting pump by feed pipe for mortar, and valve is equipped on feed pipe for mortar, and the input terminal of grouting pump connects cement
Slurry and waterglass slurries.
2. a kind of grouting pipeline structure of deep hole grouting according to claim 1, which is characterized in that the aperture exhaust pipe
ForPlastic tube is closed the hole between face and conduit by Anchor Agent, is installed on aperture Grouting Pipe and aperture exhaust pipe
There is high pressure valve.
3. a kind of grouting pipeline structure of deep hole grouting according to claim 2, which is characterized in that deep hole grouting depth
12m, excavation length 10m, injected hole diameter of phi 43, quincuncial arrangement, shield launching section transverse passage-way slip casting depth are 4m, to retreat
Formula segmenting slip casting.
4. a kind of grouting pipeline structure of deep hole grouting according to claim 3, which is characterized in that the slip casting pitch of holes
500mm, injected hole set two rows, and blossom type arrangement, injected hole diameter of phi 43mm, slip casting angle is within the scope of 18 °~25 °.
5. a kind of grouting pipeline structure of deep hole grouting according to claim 4, which is characterized in that drill as full-hydraulic drill
Machine and pneumatic drilling machine, bore diameter are more than slip casting 3~5mm of pipe diameter, and drilling isHole depth is more than design length 100mm,
Air drill trepanning, in addition limb drill outward, drilling after the completion of install Grouting Pipe in time.
6. a kind of grouting pipeline structure of deep hole grouting according to claim 5, which is characterized in that grouting pressure control exists
0.3~0.5MPa.
7. a kind of grouting pipeline structure of deep hole grouting according to claim 6, which is characterized in that sealing soil body side measure with
Relational expression between slurries grouting amount：
Q=η α β V
The total soil stabilization grouting amount m3 of Q-；Measure m3 in total soil body side that V-to be reinforced；η-formation pore rate；α-slurries are on stratum
In effective volumetric efficiency；β-slurries waste, takes 1.0~1.2；L-slip casting length m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201820299115.9U CN207974823U (en) | 2018-03-05 | 2018-03-05 | A kind of grouting pipeline structure of deep hole grouting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820299115.9U CN207974823U (en) | 2018-03-05 | 2018-03-05 | A kind of grouting pipeline structure of deep hole grouting |
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| CN207974823U true CN207974823U (en) | 2018-10-16 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110453672A (en) * | 2019-08-16 | 2019-11-15 | 上海市基础工程集团有限公司 | Loose shallow earthing two fluid grouting reinforcement means |
| CN110617027A (en) * | 2019-09-27 | 2019-12-27 | 肥城新查庄地质勘查有限公司 | Movable relay type single-liquid and double-liquid grouting system and grouting method thereof |
| CN111549801A (en) * | 2020-05-15 | 2020-08-18 | 山东东泰工程咨询有限公司 | Construction method for preventing collapse of side slope hole after drilling and injecting slurry into sleeve |
| CN111894632A (en) * | 2020-08-03 | 2020-11-06 | 平顶山天安煤业股份有限公司 | Coal rock mass deep hole sectional grouting reinforcement device and reinforcement method |
| CN113738421A (en) * | 2021-09-27 | 2021-12-03 | 于守东 | Mining full-length anchor injection loop, using method and injection gun |
-
2018
- 2018-03-05 CN CN201820299115.9U patent/CN207974823U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110453672A (en) * | 2019-08-16 | 2019-11-15 | 上海市基础工程集团有限公司 | Loose shallow earthing two fluid grouting reinforcement means |
| CN110453672B (en) * | 2019-08-16 | 2021-07-30 | 上海市基础工程集团有限公司 | Loose shallow earth covering double-liquid grouting reinforcement method |
| CN110617027A (en) * | 2019-09-27 | 2019-12-27 | 肥城新查庄地质勘查有限公司 | Movable relay type single-liquid and double-liquid grouting system and grouting method thereof |
| CN111549801A (en) * | 2020-05-15 | 2020-08-18 | 山东东泰工程咨询有限公司 | Construction method for preventing collapse of side slope hole after drilling and injecting slurry into sleeve |
| CN111549801B (en) * | 2020-05-15 | 2022-02-08 | 山东东泰工程咨询有限公司 | Construction method for preventing collapse of side slope hole after drilling and injecting slurry into sleeve |
| CN111894632A (en) * | 2020-08-03 | 2020-11-06 | 平顶山天安煤业股份有限公司 | Coal rock mass deep hole sectional grouting reinforcement device and reinforcement method |
| CN113738421A (en) * | 2021-09-27 | 2021-12-03 | 于守东 | Mining full-length anchor injection loop, using method and injection gun |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20181016 Termination date: 20190305 |