CN110261403A - A kind of device and method for grouting construction stage detection sleeve grouting full weight - Google Patents
A kind of device and method for grouting construction stage detection sleeve grouting full weight Download PDFInfo
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- CN110261403A CN110261403A CN201910372961.8A CN201910372961A CN110261403A CN 110261403 A CN110261403 A CN 110261403A CN 201910372961 A CN201910372961 A CN 201910372961A CN 110261403 A CN110261403 A CN 110261403A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/90—Investigating the presence of flaws or contamination in a container or its contents
- G01N21/909—Investigating the presence of flaws or contamination in a container or its contents in opaque containers or opaque container parts, e.g. cans, tins, caps, labels
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Fluid Mechanics (AREA)
- Working Measures On Existing Buildindgs (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a kind of devices for grouting construction stage detection sleeve grouting full weight, including perforation rubber stopper, lucite pipe, active rubber plug and push-pull rod, perforation rubber stopper is set in transparent plastic pipe surface, the side that lucite pipe is located at perforation rubber stopper small end is set as dip section, and the side that lucite pipe is located at perforation rubber stopper big end is set as imaging section；Active rubber plug is arranged in lucite pipe and connect to form push-and-pull plug with push-pull rod one end, and the push-pull rod other end is additionally provided with the stopper section with the cooperation limit of the imaging section end of lucite pipe on lucite pipe to outside, push-pull rod；Also provide a kind of detection method, when grouting directlys adopt detection device closure, then adjusts lucite pipe and is located at the position in sleeve, and push-and-pull plug is drawn out to imaging section when detection, determines result by the substantial degree of slurry of observation imaging section.The configuration of the present invention is simple, it is convenient to operate, and is conducive to the quality control during sleeve grouting construction.
Description
Technical field
The present invention relates to assembled architecture technical fields, and in particular to one kind is for grouting construction stage detection sleeve grouting
The device and method of full weight.
Background technique
Grout sleeve connection is one of main connection type of reinforcing bar in current prefabricated assembled concrete structure, and the technology is logical
Cross dedicated grout sleeve and realize that reinforcing bar connect with high-intensitive contraction-free grouting concrete, have quick construction, stress simply, additional stress
The advantages that small, applied widely, easy absorption construction error.Connector quantity because of the connection type in the same section of component is
100%, and it is typically in the important force part of component, therefore quality of connection is most important, if being in the milk insatiable hunger inside grout sleeve
Full, the estimated performance of design will be not achieved in reinforcing bar connection, then may bring serious structure security risk.
In the construction process, spillage, few the case where filling, blocking, happen occasionally inside grout sleeve, and grout sleeve connects matter
Undesirable engineering problem is measured also to be reported.Plumpness (or full weight) detection method currently, existing sleeve is in the milk
Mainly include pre-buried sensor method, pre-buried steel wire hubbing, x-ray method, endoscope, capillary water flood, along pulp duct
Unilateral ultrasonic method and along pulp duct impact demould method.But in addition to pre-buried sensor method can fill in the above method
The slurry construction stage carries out outside grouting full weight detection, remaining method was researched and developed for the inspection of quality stage, needs until filling
It just can be carried out coherent detection after slurry setting and hardening, be difficult to carry out benefit slurry testing result is undesirable.In addition, although pre-buried
Sensor method can be suitable for the grouting construction stage, but the sensor after detection whether make us being entangled with by recycling, if not returning
It receives and utilizes, sensor cost is too high, if recycling, the grout outlet to be opened that is bound to changes traditional rubber stopper, is blocking plug replacement
In the process, it is extracted out out of pulp duct with sensor, will lead to grout outlet spillage, this is undoubtedly the original intention phase with Construction control
It violates.
Therefore, it needs to research and develop a kind of suitable for the sleeve grouting full weight detection device in grouting construction stage and detection side
Method, to realize the quality control during sleeve grouting construction.
Summary of the invention
Sleeve grouting full weight is detected for the grouting construction stage the technical problem to be solved in the present invention is to provide a kind of
Device and method, structure is simple, and it is convenient to operate, and is conducive to the quality control during sleeve grouting construction.
It is full for grouting construction stage detection sleeve grouting that in order to solve the above-mentioned technical problems, the present invention provides one kind
Property device, including perforation rubber stopper, lucite pipe, active rubber plug and push-pull rod, the perforation rubber stopper be set in
Bright plastics pipe surface, the side that the lucite pipe is located at perforation rubber stopper small end are set as dip section, the transparent plastic
The side that pipe is located at perforation rubber stopper big end is set as imaging section；Active rubber plug is arranged in lucite pipe and and push-pull rod
One end connects to form push-and-pull plug, and the push-pull rod other end is additionally provided on lucite pipe to outside, the push-pull rod
With the stopper section of the imaging section end cooperation limit of lucite pipe.
Further, the internal diameter of the lucite pipe is not less than 4 millimeters.
Further, the lucite pipe is located on the end of dip section the touching portion that is provided with, the length in the touching portion
Degree is 3-6mm, when stopper section contradicts the imaging section end of lucite pipe, active rubber plug end and lucite pipe
Dip section end flush.
Further, the imaging segment length is greater than the axial length of active rubber plug.
A method of for grouting construction stage detection sleeve grouting full weight, including inspection described in above-mentioned any one
Device is surveyed, is had follow steps:
The imaging Duan Duan in insertion lucite pipe and stopper section being made to touch lucite pipe is first filled in push-and-pull by step 1)
Then perforation rubber stopper is set on lucite pipe by portion, form combination plug；
Step 2) carries out grouting construction to the sleeve in prefabricated components, and after there is slurry outflow in pulp duct, combination is filled in
From prefabricated components surface, grout outlet is filled in pulp duct and is blocked；
The dip section end that step 3) then adjusts lucite pipe is located at the position in sleeve；
It is waited after the current prefabricated components grouting construction of step 4), and is examined in the 5-10 minute after
It surveys；
Push-and-pull plug is first drawn out to imaging section when step 5) detects, makes to image space and dip section space in section and penetrates through；
Whether with the presence of slurry in step 6) observation imaging section；
When imaging in section without slurry or a small amount of slurry, then judge that sleeve grouting is not full；
When imaging the slurry for existing in section and enriching, then judge that sleeve grouting is full；
After step 7) judges, push-and-pull plug is resetted；
When it is not full for judging sleeve grouting, slurry supplementary irrigation is carried out, plug will be combined and gone out, and continue to execute step 2)
Operation；
When judge sleeve grouting for it is full when, lucite pipe is extracted outward first, makes the dip section end of lucite pipe
Portion is located in pulp duct, then will protrude above lucite pipe and the push-pull rod removal of perforation rubber stopper big end, completes detection.
Further, in step 3, when lucite pipe has touching portion, then lucite pipe is pushed into sleeve simultaneously
So that touching portion is connected in the sleeve lining or sleeve on sleeve grout outlet opposite on the surface of connection reinforcing bar.
Further, in step 3, when lucite pipe does not have touching portion, lucite pipe is pushed into sleeve simultaneously
So that dip section end abutment is connected in the sleeve lining or sleeve on sleeve grout outlet opposite on the surface of reinforcing bar, then reversely
It extracts, extraction distance 3-6mm.
Further, in step 7, the distance that lucite pipe is extracted outward is not less than sleeve diameter or not less than connection
The spacing of reinforcing bar and sleeve lining.
Beneficial effects of the present invention:
1, by the cooperation of perforation rubber stopper, lucite pipe and push-and-pull plug, can effective plugging grouting material and with
It is directly whether full to the grouting material of barrel bore to detect, and can be the grouting material for observing judgement again after detection
Send barrel bore back to.
2, detection device is rubber, plastic material, and structure is simple, low in cost, use easy to spread.
3, detection method is simple push-and-pull process, operation is very easy, reduces professional threshold, has when in use
Conducive to the quality control during sleeve grouting construction.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of present invention detection grouting full weight device；
Fig. 2 is schematic diagram when detection device insertion of the invention blocks；
Fig. 3 is present invention lucite pipe schematic diagram adjusted under full operating condition of being in the milk；
Fig. 4 is schematic diagram of the present invention under spillage operating condition；
Fig. 5 is detection schematic diagram of the present invention under full operating condition of being in the milk；
Fig. 6 is detection schematic diagram of the present invention under spillage operating condition；
Fig. 7 is the schematic diagram after the completion of present invention detects under full operating condition of being in the milk；
Fig. 8 is schematic diagram when detection device of the invention is used for half grout sleeve；
Schematic diagram when Fig. 9 is to be detected after the detection device in the touchless portion of the present invention adjusts.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings and specific examples, so that those skilled in the art can be with
It more fully understands the present invention and can be practiced, but illustrated embodiment is not as a limitation of the invention.
Shown in referring to FIG. 1 and FIG. 2, the one of the device for grouting construction stage detection sleeve grouting full weight of the invention
Embodiment, including perforation rubber stopper 1, lucite pipe 2, active rubber plug 3 and push-pull rod 4, perforation rubber stopper are set in transparent
Plastics pipe surface, the side that lucite pipe is located at perforation rubber stopper small end are set as dip section 5, and lucite pipe is located at perforation
The side of rubber stopper big end is set as imaging section 6；Active rubber plug is arranged in lucite pipe and connect with push-pull rod one end
Push-and-pull plug 9 is formed, the push-pull rod other end is additionally provided with aobvious with lucite pipe on lucite pipe to outside, push-pull rod
As the stopper section 7 of section end cooperation limit.Above-mentioned apparatus is prepared using rubber and plastics, and structure is simple, at low cost, can be with
It promotes and applies well.
In use, push-and-pull plug is plugged in lucite pipe, perforation rubber stopper is set on lucite pipe, to prefabricated structure
Sleeve in part carries out grouting construction, after grouting material goes out from pulp duct uniform flow, is blocked using the device.Then adjust
Whole lucite pipe position simultaneously can push and pull plug by pull, and the movement of push-and-pull plug can take out the grouting material in sleeve from dip section
To imaging section, since imaging section is located at outside prefabricated components, can intuitively judge to image situation in section.Work as grouting material
In imaging section, then it is qualified that it is full, which to represent grouting in sleeve,；It is imaged in section when grouting material is not in, then there is spillage
Problem.Using simply, as a result reliably, one inserts the device, a drawing can determine whether, and is in the inspection of grouting construction stages operating
The problem of survey, construction party or management side can voluntarily detect, and can preferably prevent " grouting fills discontented ", and work as and spillage occur
When problem, slurry can be mended in time in the grouting construction stage.
Push-and-pull plug can extract grouting material, grouting material can also be pushed to return in sleeve, therefore same reaching testing goal
When, and the storage of grouting material in sleeve is not influenced, it is ensured that do not cause grouting material to be lost because of detection, causes grouting not full.
The internal diameter of above-mentioned lucite pipe is not less than 4 millimeters, can be avoided the coarse sand contained in grouting material in transparent plastic
Plugging problem is formed in pipe.
And touching portion 8 is provided on the end that lucite pipe is located at dip section, the length in touching portion is 3-6mm,
So that lucite pipe is when in use, the end of dip section will not by sleeve connection reinforcing bar or sleeve lining block, lead to
Cross touching portion abutting, it is ensured that there are path clearances between the end and abutting portion of dip section, and grouting material is flowed
Pass through.Touching portion can be obtained by carrying out cut-out in the end of lucite pipe dip section, can also be disposably opened
Molding.
Since grouting material is more liquid, in order to avoid influencing testing result, when stopper section contradicts the aobvious of lucite pipe
When as section end, active rubber plug end is flushed with the dip section end of lucite pipe, and when in use, grouting material will not be preparatory
Into in lucite pipe, therefore can be to avoid in advance into the grouting material in lucite pipe when detecting by pull to imaging
Section and caused by judge problem by accident.Certainly above-mentioned imaging segment length is greater than the axial length of active rubber plug, to have enough
The visual length of naked eyes judgement, to see whether that there are grouting materials well.
Specifically, a kind of method for grouting construction stage detection sleeve grouting full weight is also provided, it is mixed to assembled
The sleeve grouting full weight of reinforced bar sleeve grouting connecting node is detected in Xtah Crude Clay structure.Referring to shown in Fig. 2, reinforced bar sleeve is filled
Slurry connecting node includes adopting prefabricated components, the sleeve 10 in prefabricated components and the connection reinforcing bar 11 with sleeve cooperation, when grouting
With grouting material 12, specific detection method are as follows:
Detection device is first assembled, push-and-pull is filled in insertion lucite pipe and stopper section is made to touch the aobvious of lucite pipe
As section end, then perforation rubber stopper is set on lucite pipe, forms combination plug；
Set-up time selection carries out grouting construction to the sleeve in prefabricated components, has slurry uniformly to flow out to pulp duct
Afterwards, combination plug is filled in pulp duct from prefabricated components surface grout outlet to block, referring to shown in Fig. 2；
Referring to shown in Fig. 3, position adjusting is carried out, the dip section end that lucite pipe is adjusted after closure is located in sleeve
Position so that dip section end position is located in sleeve, and does not influence detection device suction grouting material；Dip section end
Whether position is adjusted so as to when being the key that guarantee one of testing result correctness, and when there is spillage, sleeve entoplasm charge level can
Spillage situation is embodied, and then there is residual in the grouting material in pulp duct, it can if dip section end only exists in pulp duct
Testing result can be will affect；Lucite pipe in Fig. 3 has touching portion, and the sleeve in prefabricated components is full grout sleeve,
The adjusting method of lucite pipe is to be pushed into full grout sleeve and touching portion is connected in sleeve to connect lucite pipe
Connect the surface of reinforcing bar.
Grouting material reflux is waited, is waited after current prefabricated components grouting construction, and the 5-10 after points
It is detected in clock；Waiting time can satisfy the reflux of grouting material when there is spillage substantially, avoid grouting material reflux also not
Terminate i.e. detection too early, improves the accuracy of testing result；Predominantly two kinds of situations, one kind are to be in the milk full and do not leak
Slurry is to be in the milk not full or spillage occurs there are also one kind, grouting material is lower than pulp duct in sleeve inner height referring to shown in Fig. 3
The height of bottom, referring to shown in Fig. 4；
When detection, push-and-pull plug is first drawn out to imaging section, makes to image space and dip section space in section and penetrates through, in pull-out
Meanwhile being greater than the air pressure in lucite pipe using the air pressure in sleeve, grouting material can be evacuated in imaging section；
Whether the existence by slurry in observation imaging section is full to judge to be in the milk in sleeve；Exist when in imaging section
When substantial slurry, then judge that sleeve grouting is full, referring to Figure 5；When in imaging section without slurry or only a small amount of slurry
When, then judge that cylinder grouting is not full, referring to shown in Fig. 6；
Judgement can strive operating to property after obtaining result:
When judge sleeve grouting be it is not full when, carry out slurry supplementary irrigation, first will push-and-pull plug reset, then will combine plug
Out, and the step of continuing to execute the operating procedure of grouting, installed referring next to said combination plug continue full to grouting material in sleeve
Full property carries out detection judgement；
When judge sleeve grouting be it is full when, will push-and-pull plug reset, lucite pipe is extracted outward then, makes transparent modeling
The dip section end of expects pipe is located in pulp duct, specifically, for being connected using the grouting of full grout sleeve, lucite pipe
Spacing of the distance extracted outward not less than connection reinforcing bar and sleeve lining；It then will protrude above the transparent of perforation rubber stopper big end
Plastic tube and push-pull rod are wiped out or are cut off, and detection can be completed, referring to shown in Fig. 7.
In one embodiment, referring to shown in Fig. 8, the sleeve in prefabricated components is half grout sleeve, when lucite pipe has
When having touching portion, then lucite pipe is pushed into half grout sleeve and touching portion is made to be connected to the set on sleeve grout outlet opposite
On cylinder inner wall；
When touching portion is connected to the situation that on the sleeve lining on sleeve grout outlet opposite and grouting is full, lucite pipe
To be in the position of grouting material package be therefore when detecting that the grouting material in sleeve can be evacuated to imaging for dip section end
Section；After result judgement, to make lucite pipe not continue to stay in sleeve, in order to avoid influence the mechanical property of sleeve grouting connection
Can, lucite pipe need to be extracted outward, for above-mentioned operating condition, the distance that lucite pipe is extracted outward should be not less than in sleeve
Diameter, so that the dip section end of lucite pipe is located in pulp duct.
In one embodiment, referring to shown in Fig. 9, the sleeve in prefabricated components is half grout sleeve, when lucite pipe not
When with touching portion, lucite pipe is pushed into half grout sleeve and makes dip section end abutment on sleeve grout outlet opposite
Sleeve lining on, then reversed to extract, the dip section end of lucite pipe can be effectively ensured in extraction distance 3-6mm
Detection device suction grouting material is not influenced in sleeve inner and.
Above embodiments are only to absolutely prove preferred embodiment that is of the invention and being lifted, and protection scope of the present invention is not
It is limited to this.Those skilled in the art's made equivalent substitute or transformation on the basis of the present invention, in guarantor of the invention
Within the scope of shield.Protection scope of the present invention is subject to claims.
Claims (8)
1. it is a kind of for the grouting construction stage detection sleeve grouting full weight device, which is characterized in that including perforation rubber stopper,
Lucite pipe, active rubber plug and push-pull rod, the perforation rubber stopper are set in transparent plastic pipe surface, the transparent plastic
The side that pipe is located at perforation rubber stopper small end is set as dip section, and the lucite pipe is located at the side of perforation rubber stopper big end
It is set as imaging section；Active rubber plug is arranged in lucite pipe and connect to form push-and-pull plug with push-pull rod one end, described to push away
The pull rod other end is additionally provided on lucite pipe to outside, the push-pull rod matches with the imaging section end of lucite pipe
Close the stopper section of limit.
2. the device for grouting construction stage detection sleeve grouting full weight as described in claim 1, which is characterized in that institute
The internal diameter of lucite pipe is stated not less than 4 millimeters.
3. the device for grouting construction stage detection sleeve grouting full weight as described in claim 1, which is characterized in that institute
It states lucite pipe and is located on the end of dip section the touching portion that is provided with, the length in the touching portion is 3-6mm, when stopper section is supported
When touching the imaging section end of lucite pipe, active rubber plug end is flushed with the dip section end of lucite pipe.
4. the device for grouting construction stage detection sleeve grouting full weight as described in claim 1, which is characterized in that institute
State the axial length that imaging segment length is greater than active rubber plug.
5. a kind of method for grouting construction stage detection sleeve grouting full weight, which is characterized in that including claim 1-4
Detection device described in any one, has follow steps:
The imaging section end in insertion lucite pipe and stopper section being made to touch lucite pipe is first filled in push-and-pull by step 1), so
Perforation rubber stopper is set on lucite pipe afterwards, forms combination plug；
Step 2) carries out grouting construction to the sleeve in prefabricated components, and after there is slurry outflow in pulp duct, combination is filled in from pre-
Component surface grout outlet processed is filled in pulp duct and is blocked；
The dip section end that step 3) then adjusts lucite pipe is located at the position in sleeve；
It is waited after the current prefabricated components grouting construction of step 4), and is detected in the 5-10 minute after；
Push-and-pull plug is first drawn out to imaging section when step 5) detects, makes to image space and dip section space in section and penetrates through；
Whether with the presence of slurry in step 6) observation imaging section；
When imaging in section without slurry or a small amount of slurry, then judge that sleeve grouting is not full；
When imaging the slurry for existing in section and enriching, then judge that sleeve grouting is full；
After step 7) judges, push-and-pull plug is resetted；
When it is not full for judging sleeve grouting, slurry supplementary irrigation is carried out, plug will be combined and gone out, and continue to execute the behaviour of step 2)
Make；
When it is full for judging sleeve grouting, first lucite pipe is extracted outward, makes the dip section end of lucite pipe
In the lucite pipe and push-pull rod removal that in pulp duct, then will protrude above perforation rubber stopper big end, detection is completed.
6. the method for grouting construction stage detection sleeve grouting full weight as claimed in claim 5, which is characterized in that step
In rapid 3, when lucite pipe has touching portion, then lucite pipe is pushed into sleeve and touching portion is made to be connected to sleeve
In the sleeve lining or sleeve on grout outlet opposite on the surface of connection reinforcing bar.
7. the method for grouting construction stage detection sleeve grouting full weight as claimed in claim 5, which is characterized in that step
In rapid 3, when lucite pipe does not have touching portion, lucite pipe is pushed into sleeve and dip section end abutment is existed
It is then reversed to extract in the sleeve lining or sleeve on sleeve grout outlet opposite on the surface of connection reinforcing bar, extraction distance 3-
6mm。
8. the method for grouting construction stage detection sleeve grouting full weight as claimed in claim 5, which is characterized in that step
In rapid 7, the distance that lucite pipe is extracted outward is not less than sleeve diameter or not less than the spacing of connection reinforcing bar and sleeve lining.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910372961.8A CN110261403B (en) | 2019-05-06 | 2019-05-06 | Device and method for detecting grouting fullness of sleeve in grouting construction stage |
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| CN201910372961.8A CN110261403B (en) | 2019-05-06 | 2019-05-06 | Device and method for detecting grouting fullness of sleeve in grouting construction stage |
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Cited By (5)
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| CN111122605A (en) * | 2020-02-28 | 2020-05-08 | 中建科技(济南)有限公司 | Method for detecting fullness of grouting sleeve by adopting endoscope method |
| CN112798767A (en) * | 2020-12-29 | 2021-05-14 | 宁波工程学院 | Grouting fullness detection device and method for prefabricated concrete structure |
| CN113668897A (en) * | 2021-09-26 | 2021-11-19 | 昆山市建设工程质量检测中心 | Low-pressure filling and renovating method for slurry leakage of communication cavity at bottom of prefabricated shear wall |
| CN115436289A (en) * | 2022-09-21 | 2022-12-06 | 中建三局科创产业发展有限公司 | Sleeve grouting fullness detection system and detection method |
| CN115961785A (en) * | 2022-12-30 | 2023-04-14 | 昆山市建设工程质量检测中心 | Method for adjusting extending position of grout supplementing pipe for semi-grouting sleeve grouting repair and remediation |
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| CN111122605A (en) * | 2020-02-28 | 2020-05-08 | 中建科技(济南)有限公司 | Method for detecting fullness of grouting sleeve by adopting endoscope method |
| CN112798767A (en) * | 2020-12-29 | 2021-05-14 | 宁波工程学院 | Grouting fullness detection device and method for prefabricated concrete structure |
| CN112798767B (en) * | 2020-12-29 | 2023-04-25 | 宁波工程学院 | Device and method for detecting grouting fullness of assembled concrete structure |
| CN113668897A (en) * | 2021-09-26 | 2021-11-19 | 昆山市建设工程质量检测中心 | Low-pressure filling and renovating method for slurry leakage of communication cavity at bottom of prefabricated shear wall |
| CN113668897B (en) * | 2021-09-26 | 2022-05-31 | 昆山市建设工程质量检测中心 | Low-pressure filling and renovating method for slurry leakage of communication cavity at bottom of prefabricated shear wall |
| CN115436289A (en) * | 2022-09-21 | 2022-12-06 | 中建三局科创产业发展有限公司 | Sleeve grouting fullness detection system and detection method |
| CN115436289B (en) * | 2022-09-21 | 2024-05-14 | 中建三局建筑科技湖北有限公司 | Sleeve grouting fullness detection system and detection method |
| CN115961785A (en) * | 2022-12-30 | 2023-04-14 | 昆山市建设工程质量检测中心 | Method for adjusting extending position of grout supplementing pipe for semi-grouting sleeve grouting repair and remediation |
| CN115961785B (en) * | 2022-12-30 | 2023-09-01 | 昆山市建设工程质量检测中心 | Grouting pipe extending position adjusting method for repairing grouting sleeve |
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