CN115389254A - Minimally invasive probing method and device for urban rail transit tunnel structure - Google Patents
Minimally invasive probing method and device for urban rail transit tunnel structure Download PDFInfo
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- CN115389254A CN115389254A CN202210820949.0A CN202210820949A CN115389254A CN 115389254 A CN115389254 A CN 115389254A CN 202210820949 A CN202210820949 A CN 202210820949A CN 115389254 A CN115389254 A CN 115389254A
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- 238000000034 method Methods 0.000 title claims abstract description 32
- 239000002689 soil Substances 0.000 claims abstract description 15
- 238000012360 testing method Methods 0.000 claims abstract description 11
- 230000007547 defect Effects 0.000 claims abstract description 9
- 239000011435 rock Substances 0.000 claims abstract description 7
- 238000005553 drilling Methods 0.000 claims abstract description 6
- 239000011800 void material Substances 0.000 claims abstract description 4
- 210000000078 claw Anatomy 0.000 claims description 4
- 230000006378 damage Effects 0.000 abstract description 24
- 238000005070 sampling Methods 0.000 abstract description 12
- 238000005259 measurement Methods 0.000 abstract description 4
- 201000010099 disease Diseases 0.000 description 13
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 13
- 230000007797 corrosion Effects 0.000 description 10
- 238000005260 corrosion Methods 0.000 description 10
- 238000001514 detection method Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 5
- 238000003763 carbonization Methods 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/18—Measuring arrangements characterised by the use of mechanical techniques for measuring depth
-
- 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
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention provides a minimally invasive exploration method and a minimally invasive exploration device for an urban rail transit tunnel structure, wherein the minimally invasive exploration method comprises the following steps: A. drilling micropores with the diameter less than or equal to phi 20mm on the tunnel lining structure; B. probing various defects in the lining room void and the drill hole by using an endoscope; C. extracting a lining surrounding rock soil sample in the drill hole by using an endoscope and combining a sampler; D. measuring the thickness of the lining by using a measuring scale; E. and (4) grabbing foreign matters in the tunnel structure by using a four-claw extractor for testing. The method for carrying out the minimally invasive exploration from the inside of the tunnel structure drills micropores with the diameter of phi 20mm on the existing tunnel lining structure, only negligibly minimally invasively explores the structure, comprehensively adopts a sampler, an object extractor, an endoscope and measuring scale equipment, realizes the comprehensive exploration functions of damage exploration, size measurement, sampling and fetching and the like in the structure, improves the exploration precision and saves the cost.
Description
Technical Field
The invention relates to the technical field of municipal pipe network design, in particular to a minimally invasive exploration method and device for an urban rail transit tunnel structure.
Background
Under the condition of long-term service of the concrete of the composite lining subway tunnel structure, the structure can generate diseases such as leakage, deformation, damage and the like in different degrees. In order to treat such diseases, detailed exploration needs to be performed on the damage state and the cause of the subway structure, and currently, existing exploration technologies include lossless and lossy technologies.
The method is characterized in that a nondestructive exploration method such as a geological radar method, a transient electromagnetic method and the like is convenient and continuous to explore, the structure is not damaged, but the exploration depth and precision are not enough, and the properties of soil layers around the subway structure cannot be described;
the destructive detection method comprises a geological drilling method and the like, the exploration precision is high, the soil body properties around the structure can be described quantitatively, but in order to know the geological state around the subway structure, a long drill hole (generally with the depth of more than 10 m) needs to be drilled from the ground to achieve the purpose (as shown in figure 1), and the cost is high.
In addition, because the ground drilling can not damage the subway structure, the damage state of the lining of the subway structure can not be detected.
Disclosure of Invention
In view of this, the present invention aims to develop a method and a device for minimally invasive exploration from inside of a tunnel structure, which drill micropores with a diameter of only phi 20mm on an existing tunnel lining structure, and comprehensively use a sampler, a fetching device, an endoscope and a measuring scale device to realize comprehensive exploration functions of damage exploration, size measurement, sampling and fetching of objects in the structure.
The invention provides a minimally invasive exploration method for an urban rail transit tunnel structure, which comprises the following steps of:
A. drilling micropores with the diameter less than or equal to phi 20mm on the tunnel lining structure;
B. probing various defects in the lining room and the drill hole by using an endoscope;
C. extracting a lining surrounding rock soil sample in the drill hole by using an endoscope combined with a sampler;
D. measuring the thickness of the lining by using a measuring scale;
E. the foreign matter in the tunnel structure can be grabbed by the four-claw extractor with the endoscope for testing.
Further, the endoscope in the steps B and C is of a turnable type.
Further, the diameter of the endoscope in the step B is less than or equal to phi 4mm.
And furthermore, the outer diameter of the sampler in the step C is less than or equal to phi 16mm, and the inner diameter of the sampler is less than or equal to phi 10mm.
Further, the diameter of the measuring scale in the step D is less than or equal to phi 15mm.
And furthermore, the diameter of the head of the four-claw extractor in the step E is less than or equal to phi 15mm, and the opening size of the completely opened claws is less than or equal to 3 cm.
Further, the four-claw extractor is provided with an endoscope.
The invention also provides a minimally invasive exploration device for the urban rail transit tunnel structure, which uses the minimally invasive exploration method for the urban rail transit tunnel structure, and comprises the following steps: the device comprises an endoscope, a sampler, a measuring scale and a four-claw extractor;
the endoscope is used for probing various defects in lining room void and a drill hole;
the sampler is combined with the endoscope to extract a lining surrounding rock soil sample in the borehole;
the measuring scale is used for measuring the thickness of the lining;
the four-claw extractor is used for grabbing foreign matters in the tunnel structure to test.
Compared with the prior art, the invention has the beneficial effects that:
the method for performing minimally invasive exploration from the interior of the tunnel structure drills micropores with the diameter of phi 20mm on the existing tunnel lining structure, only negligibly minimally invasively explores the structure, comprehensively adopts a sampler, a fetching device, an endoscope and measuring scale equipment, realizes comprehensive exploration functions of damage exploration, size measurement, sampling and fetching and the like in the structure, improves exploration precision and saves cost.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention.
In the drawings:
FIG. 1 is a schematic diagram of a prior art ground survey hole arrangement;
FIG. 2 is a schematic view of the endoscopic operation of the minimally invasive probing method according to the embodiment of the invention;
FIG. 3 is a schematic diagram of the operation of a sampler in the minimally invasive probing method according to the embodiment of the invention;
FIG. 4 is a schematic view of a measuring scale for the minimally invasive probing method according to the embodiment of the invention;
FIG. 5 is a schematic diagram of the operation of a four-claw extractor in the minimally invasive probing method of the embodiment of the invention;
fig. 6 is an end view of a sampler used in an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. The following description refers to the accompanying drawings in which the same numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of devices and products consistent with certain aspects of the disclosure, as detailed in the appended claims.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at" \8230; "or" when 8230; \8230; "or" in response to a determination ", depending on the context.
The embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
The embodiment of the invention provides a minimally invasive exploration method for an urban rail transit tunnel structure, which comprises the following steps:
A. drilling micropores with the diameter less than or equal to phi 20mm on the tunnel lining structure;
B. probing lining cavity and various defects in the borehole by using an endoscope, as shown in fig. 2;
the principle of the endoscope adopted in the embodiment is similar to that of an industrial endoscope, and the diameter is less than or equal to phi 4mm; see table 1 for host parameters of the endoscope:
TABLE 1
C. Using endoscope combined with sampler to extract the soil sample of surrounding rock around the lining in the borehole, as shown in fig. 3;
the outer diameter of the sampler adopted in the embodiment is less than or equal to phi 16mm, the inner diameter is less than or equal to phi 10mm, the length is 0.3m, and the sampler is made of stainless steel; the end of the sampler is shown in fig. 6;
pressing a sampling head of the sampler into soil behind the lining through a controller of an endoscope, enabling a collected soil sample to enter the sampling head through an opening of the sampler, rotating the side wall of the sampling head through the controller of the endoscope to seal the soil in the sampling head, and then retracting the sampling head, so that the soil sample can be taken out of the soil behind the lining;
in this embodiment, the endoscope in the steps B and C is of a steerable type;
D. measuring the thickness of the lining by using a measuring scale, and referring to fig. 4;
the dipperstick that adopts in this embodiment is cylindrical ruler, and the type is: the diameter of the cylindrical stainless steel column is 15mm, a circle of stainless steel column is fully marked with scales, the stainless steel column is similar to a cylindrical ruler, and the measuring range is 50cm;
E. the foreign matter in the tunnel structure can be grabbed by the four-claw picker for testing, and the test is shown in fig. 5;
preferably, the four-paw extractor is provided with an endoscope;
the head diameter of the four-claw extractor adopted in the embodiment is phi 15mm, and the fully-opened size of the claw is 3cm; the controller of the endoscope controls the opening and closing of the claws to grab foreign matters such as soil blocks, stones, concrete blocks and the like in the tunnel.
The embodiment of the invention also provides a minimally invasive probing device for the urban rail transit tunnel structure, which uses the minimally invasive probing method for the urban rail transit tunnel structure, and comprises the following steps: the device comprises an endoscope, a sampler, a measuring scale and a four-claw extractor;
the endoscope is used for probing various defects in lining room void and a drill hole;
the sampler is combined with the endoscope to extract a lining surrounding rock soil sample in the borehole;
the measuring scale is used for measuring the thickness of the lining;
the four-claw extractor is used for grabbing foreign matters in the tunnel structure to test.
Application example
The invention is applied to inspecting the lining concrete structure of the subway tunnel and preventing the lining from generating quality problems.
1. Analysis of common diseases in subway tunnel lining concrete structure
1. In the application of subway tunnel lining concrete structure engineering, one of the common diseases is concrete corrosion disease. The occurrence of the concrete corrosion disease phenomenon seriously influences the structural safety of the lining concrete of the subway tunnel, and the corrosion phenomenon of the engineering structure also causes great influence on the application life of the engineering structure and the safety of the subway in the passing process.
In addition, the causes of corrosion diseases of concrete structures are analyzed, and the causes of corrosion of the subway tunnel lining concrete structures are mainly divided into chemical corrosion, biological corrosion and physical corrosion. The chemical corrosion has a large proportion in subway disease cases, the damage caused by the chemical corrosion is high, and the generated maintenance cost is high.
2. In the application of the subway tunnel lining concrete structure deformation damage subway tunnel lining concrete structure engineering, along with the increase of application time, the change of the static load force of a structure is applied, the deformation damage occurs to the tunnel lining concrete structure, which is also a common structure damage phenomenon, wherein the occurrence of the structure deformation damage phenomenon is mainly represented as follows: the compressive strength of the structure is reduced, and the internal stress of the structure is unbalanced and the generated structure is extruded and deformed in the relatively stable environment of static loading force. The harm that the disease early stage produced is less for the structure deformation, can restore through certain strut reinforcement technique, and later stage is along with the worsening of deformation disease, then easily causes other incident phenomena such as structure collapse.
3. In the construction application of the subway tunnel lining concrete structure, the defect of poor foundation settlement is also a common defect phenomenon. The structural settlement damage phenomenon is mainly shown in the aspect of structural balance, namely, the subway tunnel lining concrete structure subsides to cause the stress unbalance phenomenon of a subway foundation, a structural framework and a tunnel structure, and a certain structural crack phenomenon is generated. Secondly, the occurrence of the settlement damage phenomenon of the subway tunnel lining concrete structure causes great harm to the safety stability of the ground surface building foundation and the structural safety of the ground surface building engineering.
4. And (5) concrete carbonization damage of the subway tunnel lining. The subway tunnel lining concrete structure is evaluated from the aspect of construction and application environment, and the phenomenon of carbonization diseases of the structure is more common. The phenomenon of carbonization diseases of the subway tunnel lining concrete structure is mainly shown as follows: the lining concrete structure has performance failure, structure stripping and falling off, and causes serious harm to the control of supporting force between structures and the safety control of the structure. In addition, the occurrence of the carbonization disease of the lining concrete structure ensures the design life of the subway tunnel engineering and the traffic safety and the structural safety of the subway, which cause great harm.
5. The subway tunnel lining concrete structure has structural cracks and structural leakage damage phenomena in application, and is a ubiquitous damage phenomenon. The occurrence of structural cracks and leakage phenomena causes the relative strength reduction of tunnel engineering, the structural safety reduction and great harm to the safe and stable application of the engineering. In addition, analysis is carried out on the aspect of electric power safety application in subway operation, and the occurrence of structural cracks and leakage phenomena causes great harm to the safe and stable operation of related electric power facilities, so that the safe and stable operation of subway engineering is not facilitated.
The application example of the invention adopts a sampling detection technology of minimally invasive exploration to carry out detection test operation on the subway tunnel lining concrete structure. In the implementation of the sampling detection technology, the structural safety, the detection efficiency and the detection cost are considered, the embodiment of the invention performs minimally invasive exploration and sampling from the interior of a tunnel structure, drills micropores with the diameter of phi 20mm on the existing tunnel lining structure, only negligibly minimally invasively explores the structure, comprehensively adopts a sampler, a fetching device, an endoscope and measuring scale equipment, realizes the comprehensive exploration functions of damage exploration, size measurement, sampling and fetching and the like in the structure, improves the exploration precision and saves the cost. Through sample test block preparation, simulation subway tunnel lining concrete application environment, through the experiment in turn of dry, wet environment to and the mode of blending into corrosive chemical composition solution, carry out the compressive strength of test block, and its dead load capacity detects. The method comprises the steps of analyzing the current quality situation of the subway tunnel lining concrete structure, carrying out assessment on the quality of the subway tunnel lining concrete structure based on detection data and by combining design data and safety requirements, reasonably assessing the quality of the lining concrete structure, optimizing a structure maintenance technology, prolonging the application life of the structure, and finally achieving the purposes of improving the construction quality of the engineering, guaranteeing the application safety of the subway tunnel and guaranteeing the actual application effect of the engineering.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is apparent to those skilled in the art that the scope of the present invention is not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can be within the protection scope of the invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention; various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A minimally invasive exploration method for an urban rail transit tunnel structure is characterized by comprising the following steps:
A. drilling micropores with the diameter less than or equal to phi 20mm on the tunnel lining structure;
B. probing various defects in the lining room and the drill hole by using an endoscope;
C. extracting a lining surrounding rock soil sample in the drill hole by using an endoscope and combining a sampler;
D. measuring the thickness of the lining by using a measuring scale;
E. and (4) grabbing foreign matters in the tunnel structure by using a four-claw extractor for testing.
2. The minimally invasive exploration method for urban rail transit tunnel structures according to claim 1, characterized in that the endoscopes of the steps B and C are of a turnable type.
3. The minimally invasive exploration method for urban rail transit tunnel structures according to claim 2, characterized in that the diameter of said endoscope is less than or equal to Φ 4mm.
4. The minimally invasive exploration method for urban rail transit tunnel structures according to claim 1, characterized in that the outer diameter of the sampler in step C is less than or equal to phi 16mm, and the inner diameter is less than or equal to phi 10mm.
5. The minimally invasive exploration method for urban rail transit tunnel structures according to claim 1, characterized in that the diameter of the measuring ruler in step D is not more than phi 15mm.
6. The minimally invasive exploration method for the urban rail transit tunnel structure according to claim 1, wherein the head diameter of the four-claw extractor in the step E is less than or equal to 15mm, and the opening size of a completely opened claw is less than or equal to 3 cm.
7. The minimally invasive exploration method for the urban rail transit tunnel structure according to claim 1, wherein the four-paw picker is provided with an endoscope.
8. A minimally invasive exploration device for urban rail transit tunnel structures, which is used for the minimally invasive exploration method for the urban rail transit tunnel structures according to any one of claims 1 to 7, and is characterized by comprising the following steps: the device comprises an endoscope, a sampler, a measuring scale and a four-claw extractor;
the endoscope is used for probing various defects in lining room void and a drill hole;
the sampler is combined with the endoscope to extract a lining surrounding rock soil sample in the borehole;
the measuring scale is used for measuring the thickness of the lining;
the four-claw extractor is used for grabbing foreign matters in the tunnel structure to test.
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| CN202210820949.0A CN115389254A (en) | 2022-07-13 | 2022-07-13 | Minimally invasive probing method and device for urban rail transit tunnel structure |
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| CN202210820949.0A CN115389254A (en) | 2022-07-13 | 2022-07-13 | Minimally invasive probing method and device for urban rail transit tunnel structure |
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Citations (7)
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|---|---|---|---|---|
| JP2008203275A (en) * | 2008-05-27 | 2008-09-04 | Nishimatsu Constr Co Ltd | Inspection method of concrete, and measurement tool used for it |
| CN101832140A (en) * | 2010-04-20 | 2010-09-15 | 北京交通大学 | Testing method of water pressure distribution law of subsea tunnel lining |
| KR20170051264A (en) * | 2015-11-02 | 2017-05-11 | 재단법인 아산사회복지재단 | Multi-spectral autoanalysis endoscope apparatus and method of processing image using the same |
| CN212207060U (en) * | 2020-04-17 | 2020-12-22 | 广州冠粤路桥检测有限公司 | Tunnel lining detection device |
| US20210017861A1 (en) * | 2019-07-19 | 2021-01-21 | Tongji University | Method for inspecting service performance of tunnel lining based on defect characteristics thereof |
| CN212748712U (en) * | 2020-08-06 | 2021-03-19 | 中铁四局集团有限公司 | Structure for endoscopic forward on palm surface |
| CN112879047A (en) * | 2021-03-01 | 2021-06-01 | 中铁十六局集团有限公司 | Intelligent comprehensive judgment method for concrete pouring and emptying of secondary lining vault of tunnel |
-
2022
- 2022-07-13 CN CN202210820949.0A patent/CN115389254A/en active Pending
Patent Citations (7)
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|---|---|---|---|---|
| JP2008203275A (en) * | 2008-05-27 | 2008-09-04 | Nishimatsu Constr Co Ltd | Inspection method of concrete, and measurement tool used for it |
| CN101832140A (en) * | 2010-04-20 | 2010-09-15 | 北京交通大学 | Testing method of water pressure distribution law of subsea tunnel lining |
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| US20210017861A1 (en) * | 2019-07-19 | 2021-01-21 | Tongji University | Method for inspecting service performance of tunnel lining based on defect characteristics thereof |
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| Title |
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