CN111911228A - Ground penetrating radar special track for shield tunnel grouting detection - Google Patents
Ground penetrating radar special track for shield tunnel grouting detection Download PDFInfo
- Publication number
- CN111911228A CN111911228A CN202010781574.2A CN202010781574A CN111911228A CN 111911228 A CN111911228 A CN 111911228A CN 202010781574 A CN202010781574 A CN 202010781574A CN 111911228 A CN111911228 A CN 111911228A
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- Prior art keywords
- track
- hydraulic cylinder
- circular track
- ground penetrating
- penetrating radar
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- 230000000149 penetrating effect Effects 0.000 title claims abstract description 32
- 238000001514 detection method Methods 0.000 title claims abstract description 27
- 239000003921 oil Substances 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 5
- 230000017525 heat dissipation Effects 0.000 claims description 3
- 239000010720 hydraulic oil Substances 0.000 claims description 2
- 238000007569 slipcasting Methods 0.000 claims 1
- 230000008602 contraction Effects 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 8
- 239000002689 soil Substances 0.000 description 5
- 239000011440 grout Substances 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention relates to a ground penetrating radar special track for shield tunnel wall back grouting detection, wherein a circular track and a ground penetrating radar are arranged in a shield tunnel and are arranged on the end surface of a trolley, the upper half part of the circular track is provided with two horizontal hydraulic cylinders, two ends of a piston rod of each horizontal hydraulic cylinder are respectively hinged with the upper part and the inner side of the upper part of the circular track, two sides of the bottom of the circular track are respectively connected with a horizontal guide rail, and two ends of each horizontal guide rail are fixedly connected with the circular track; the horizontal hydraulic cylinder is connected with a hydraulic system, the circular track is connected with the end face of the trolley through four connecting rods, the two connecting rods at the upper part are respectively hinged with a cylinder barrel of the horizontal hydraulic cylinder and the end face of the trolley, and the two connecting rods at the lower part are respectively hinged with a sliding block of the horizontal guide rail and the end face of the trolley; and supporting hydraulic cylinders are respectively hinged between the two connecting rods at the upper part and the end surface of the trolley, and the connecting rods are driven to rotate upwards or downwards by the extension/contraction of the supporting hydraulic cylinders so as to drive the circular track to move upwards or downwards, so that the circular track can be adjusted to be concentric with any tunnel section.
Description
Technical Field
The invention relates to a shield tunnel backfill grouting detection device, in particular to a ground penetrating radar track for shield tunnel backfill grouting detection.
Background
Examples at home and abroad show that a plurality of deformation factors cause shield tunnel construction, and soil layer loss is mainly caused by excavating soil bodies in the shield tunnel construction stage. Timely and sufficient synchronous grouting after the wall can effectively reduce the soil loss, whether grouting is sufficient or not, whether loss is generated in the grouting process or not, and factors such as disturbance of the grout on the soil layer and shrinkage of the grout can cause additional deformation on the soil layer.
At present, a ground penetrating radar is widely applied to detection work of shield tunnel wall back grouting as nondestructive detection equipment. The time for achieving the solidification stable state of the post-grouting is a period of time after the assembly of the duct piece, and usually needs 0.3 to 3 days according to different geological conditions and slurry components. If the shield construction advances 3-4 rings (about 4-6 meters) every day, the segment ring to be detected is usually in the area of the shield machine trolley (usually, the length of a single trolley is 6-10 meters, and the total length is at least 50-100 meters and more). Equipment machines such as platform truck, pipeline exist in this region, and the centre still need to remain transports the transport corridor of section of jurisdiction etc. and the space that can use ground penetrating radar is narrower and smaller. An advantageous and feasible way of using ground penetrating radar for mechanical detection, especially during construction, is to add a circular track to the trolley, on which track the ground penetrating radar is moved, so that the radar antenna can sweep the pipe wall for detection.
Particularly, the curved construction working condition of the shield tunnel, that is, the turning section in the horizontal plane, the turning section in the vertical plane, or the combination of the two, is considered, which is commonly found in the shield tunnels in cities. Under the working condition, the linear trolley is usually deviated from the middle shaft of the tunnel in the turning section area and leans to one side of the wall of the tunnel pipe to drive the circular track on the linear trolley to be deviated to one side. Therefore, the circular track needs to have the function of adjusting movement, so that the circular track can keep a concentric state with any section of the tunnel as far as possible, and the ground penetrating radar can cling to the wall of the shield pipe, thereby effectively finishing the detection work.
In view of the above circumstances, it is urgently needed to develop a special track suitable for various working conditions in the shield tunnel construction stage, especially suitable for tunnel at the construction turning section, and simultaneously, the cost is suitable, and the risk of ascending operation of measuring staff can be avoided.
Disclosure of Invention
The invention aims to provide a ground penetrating radar special track for detecting the back grouting of a shield tunnel, which can be used in different shield tunnels and different construction positions and is used for carrying a ground penetrating radar to detect the back grouting of the shield tunnel.
In order to achieve the purpose, the technical scheme of the invention is as follows:
a ground penetrating radar special track for shield tunnel wall back grouting detection is provided with a circular track, wherein a ground penetrating radar is arranged at the upper part of the circular track, the circular track and the ground penetrating radar are arranged in a shield tunnel and are arranged on the end surface of a trolley, two horizontal hydraulic cylinders are arranged at the upper half part of the circular track and are symmetrically arranged at two sides of the circular track, two ends of a piston rod of each horizontal hydraulic cylinder are respectively hinged with the upper part and the inner side of the upper part, two sides of the bottom of the circular track are respectively connected with a horizontal guide rail, and two ends of each horizontal guide rail are fixedly connected with the circular track; the horizontal hydraulic cylinder is connected with a hydraulic system, and a piston rod of the horizontal hydraulic cylinder is controlled by the hydraulic system to transversely move left and right, so that the circular track is driven to transversely move left and right; the circular track is connected with the end face of the trolley through four connecting rods, the two connecting rods at the upper part are respectively hinged with the cylinder barrel of the horizontal hydraulic cylinder and the end face of the trolley, and the two connecting rods at the lower part are respectively hinged with the sliding block on the horizontal guide rail and the end face of the trolley; and supporting hydraulic cylinders are respectively arranged between the two connecting rods at the upper part and the end surface of the trolley, and the connecting rods are driven by the telescopic action of the supporting hydraulic cylinders to rotate up and down so as to drive the circular track to move up and down, so that the circular track can be adjusted to be concentric with any tunnel section.
Further, the horizontal hydraulic cylinder is a double-piston-rod hydraulic cylinder or a constant-speed oil cylinder.
Furthermore, the supporting hydraulic cylinder is a double-acting single-rod hydraulic cylinder.
Furthermore, the horizontal guide rail adopts a ball linear guide rail.
Furthermore, a guide rail clamp is arranged at the slide block of the horizontal guide rail.
Further, the circular track is formed by two parallel circular ring-shaped pipe fittings; the section of a single wire is a hollow rectangle, and two ends of the single wire are closed; two parallel round pipe fittings are connected and fixed by a group of sleepers, and simultaneously, the pipe fittings are also used as a part of an oil pipe loop of a hydraulic system and play a role in heat dissipation of hydraulic oil.
Furthermore, distance measuring sensors are respectively arranged on the two sides and the top of the circular track and used for measuring the distance between the track and the inner wall of the tunnel; the hydraulic system is also connected with a supporting hydraulic cylinder and a guide rail clamp, an electromagnetic directional valve in the hydraulic system is used for controlling the extension and retraction of the horizontal hydraulic cylinder and the supporting hydraulic cylinder, and the two groups of hydraulic cylinders adopt a synchronous valve to control the parallel extension and retraction stroke of the hydraulic cylinders; the horizontal hydraulic cylinder adopts a duplex hydraulic control one-way valve to lock the stroke ending position; the supporting hydraulic cylinder adopts a balance valve as a safe locking mode of a stroke ending position.
Further, the distance measuring sensor adopts a laser distance measuring sensor.
Furthermore, the distance measuring sensor and the hydraulic system are connected with a control system, the control system is an embedded industrial control system, six distance detection data of the distance measuring sensor are calculated through an internal algorithm, the transverse moving stroke of the horizontal hydraulic cylinder and the telescopic stroke of the supporting hydraulic cylinder are obtained, and the hydraulic system controls the hydraulic cylinder to operate, so that the circular track is positioned at the position coaxial with any tunnel section.
Further, the hydraulic system adopts a closed circuit.
The invention has the beneficial effects that:
1. can adjust the track body to with the sectional concentric position in tunnel, prevent that the track from leaning on tunnel one side to make ground penetrating radar lose measuring space.
2. Has the function of measuring the distance of the space position, can automatically adjust the space position of the track,
3. simple structure, the operation is reliable, improves the level of mechanization of detection achievement, avoids operating personnel to ascend a height and the risk of falling, effectively reduces intensity of labour.
Drawings
FIG. 1 is a schematic front view of the general structure of a ground penetrating radar special track for shield tunnel grouting detection of the invention;
fig. 2 is a schematic side view of the general structure of the ground penetrating radar special track for shield tunnel grouting detection.
Detailed Description
The embodiments of the present invention will be described in detail below with reference to the accompanying drawings and examples.
As shown in fig. 1 and 2, the ground penetrating radar special track for shield tunnel grouting detection comprises a track 1, a horizontal hydraulic cylinder 2, a horizontal guide rail 3, a guide rail clamp 3-1, a connecting rod 4, a supporting hydraulic cylinder 5, a distance measuring sensor 6, a hydraulic system 7 (a pump, a reversing valve group and the like), a control system 8 and other accessory functional components. The upper part of the track 1 is provided with a ground penetrating radar 10.
The track 1 is composed of 2 parallel round pipe fittings, and the section of a single pipe fitting is a hollow rectangle; both ends are closed. The two are connected and fixed by a group of sleepers. The radial dimension of the track 1 is tailored to the inner diameter of the shield tunnel wall 9.
The horizontal hydraulic cylinder 2 is a double-acting double-rod hydraulic cylinder, piston rod heads at two ends are provided with joint bearings, and the joint bearings and the track 1 form a mode that trunnions are hinged and connected. The number of the rails is 2, and the rails are respectively arranged on the inner side of the upper part of the rail 1 and are symmetrically and horizontally arranged. The left and right transverse movement of the track is driven by controlling the left and right transverse movement of the hydraulic cylinder.
The horizontal guide rails 3 are positioned at the bottom of the track and are symmetrically and horizontally arranged. Preferably, a ball linear guide rail is adopted, and two ends of the guide rail are fixedly connected with the track.
The guide rail clamp 3-1 is positioned at the slide block of the horizontal guide rail 3 and is in a locking state at ordinary times, so that the slide block is stably positioned on the guide rail. The horizontal hydraulic cylinder 2 is loosened before moving, and locked after moving to a target position.
The number of the connecting rods 4 is four, and every two connecting rods are symmetrically distributed. 2 upper portions are respectively connected with the cylinder barrel of the horizontal hydraulic cylinder 2 and the end face of the trolley 11, 2 lower portions are respectively connected with the sliding block of the horizontal guide rail 3 and the end face of the trolley, and the connection mode adopts a rotating shaft hinge mode.
The supporting hydraulic cylinder 5 is a double-acting single-rod hydraulic cylinder, and a joint bearing is arranged on a connecting lug seat of the piston rod and the cylinder barrel. The cylinder end is connected with a connecting rod 4 positioned at the upper part, and the trunnion is hinged; the piston rod end is hinged with an ear seat arranged on the end surface of the trolley through a trunnion. When the piston rod extends out, the connecting rod 4 is driven to rotate upwards, and then the track 1 is driven to move upwards. When the piston rod retracts, the connecting rod 4 is driven to rotate downwards, and then the track 1 is driven to move downwards.
The distance measuring sensors 6 are used for measuring the distance between the track and the inner wall of the tunnel, are preferably arranged in number of 6, are respectively positioned at the two ends and the top of the track on one side, and are preferably laser distance measuring sensors.
The hydraulic system 7 is used for controlling the operation of the horizontal hydraulic cylinder 2, the support hydraulic cylinder 5 and the guide rail clamp 3-1. A closed hydraulic system is adopted, an electromagnetic directional valve is used for controlling the extension and retraction of the hydraulic cylinders 2 and 5, the horizontal hydraulic cylinder 2 adopts a synchronous valve to control the parallel extension and retraction stroke, and a hydraulic lock (a duplex hydraulic control one-way valve) is adopted to lock the stroke end position; the supporting hydraulic cylinder 5 adopts a synchronous valve to control parallel telescopic strokes, and adopts a balance valve as a safe locking mode of a stroke end position to prevent decompression retraction. Wherein 2 guide rails in the track 1 are used as part of the oil line circuit of the hydraulic system and at the same time serve for heat dissipation.
The control system 8 is an embedded industrial control system, 6 distance detection data of the distance measuring sensor 6 are calculated through an internal algorithm, the transverse moving stroke of the horizontal hydraulic cylinder 2 and the telescopic stroke of the supporting hydraulic cylinder are obtained, and the hydraulic cylinder is controlled to operate through the hydraulic system 7, so that the track 1 is positioned at a position coaxial with any tunnel section.
It is to be noted that: the device of the invention is arranged on the end surface of the trolley, namely between two trolleys or the tail of the tail trolley (or the head of the head trolley) in order to obtain the largest possible moving and adjusting space. The mounting position is thus preferably, but not exclusively, provided at the end face of the trolley in practical use.
Claims (10)
1. The utility model provides a ground penetrating radar special track for shield tunnel slip casting detects, has a circular track, and ground penetrating radar, its characterized in that are equipped with on circular track upper portion: the circular track and the ground penetrating radar are arranged in the shield tunnel and are arranged on the end face of the trolley, two horizontal hydraulic cylinders are arranged on the upper half part of the circular track and are symmetrically arranged on two sides of the circular track, two ends of a piston rod of each horizontal hydraulic cylinder are hinged to the upper part and the inner side of the upper part of the circular track respectively, two sides of the bottom of the circular track are connected with horizontal guide rails respectively, and two ends of each horizontal guide rail are fixedly connected with the circular track; the horizontal hydraulic cylinder is connected with a hydraulic system, and a piston rod of the horizontal hydraulic cylinder is controlled by the hydraulic system to transversely move left and right, so that the circular track is driven to transversely move left and right; the circular track is connected with the end face of the trolley through four connecting rods, the two connecting rods at the upper part are respectively hinged with the cylinder barrel of the horizontal hydraulic cylinder and the end face of the trolley, and the two connecting rods at the lower part are respectively hinged with the sliding block on the horizontal guide rail and the end face of the trolley; and supporting hydraulic cylinders are respectively arranged between the two connecting rods at the upper part and the end surface of the trolley, and the connecting rods are driven by the telescopic action of the supporting hydraulic cylinders to rotate up and down so as to drive the circular track to move up and down, so that the circular track can be adjusted to be concentric with any tunnel section.
2. The ground penetrating radar special track for shield tunnel grouting detection according to claim 1, wherein: the horizontal hydraulic cylinder is a double-piston-rod hydraulic cylinder or a constant-speed oil cylinder.
3. The ground penetrating radar special track for shield tunnel grouting detection according to claim 1, wherein: the supporting hydraulic cylinder is a double-acting single-rod hydraulic cylinder.
4. The ground penetrating radar special track for shield tunnel grouting detection according to claim 1, wherein: the horizontal guide rail adopts a ball linear guide rail.
5. The ground penetrating radar special track for shield tunnel grouting detection according to claim 1, wherein: and a guide rail clamp is arranged at the sliding block of the horizontal guide rail.
6. The ground penetrating radar special track for shield tunnel grouting detection according to claim 1, wherein: the circular track is formed by two parallel circular ring-shaped pipe fittings, a single section adopts a hollow rectangle, and two ends of the hollow rectangle are closed; two parallel round pipe fittings are connected and fixed by a group of sleepers, and simultaneously, the pipe fittings are also used as a part of an oil pipe loop of a hydraulic system and play a role in heat dissipation of hydraulic oil.
7. The ground penetrating radar special track for shield tunnel grouting detection according to claim 1, wherein: distance measuring sensors are respectively arranged on the two sides and the top of the circular track and used for measuring the distance between the track and the inner wall of the tunnel; the hydraulic system is also connected with a supporting hydraulic cylinder and a guide rail clamp, an electromagnetic directional valve in the hydraulic system is used for controlling the extension and retraction of the horizontal hydraulic cylinder and the supporting hydraulic cylinder, and the two groups of hydraulic cylinders adopt a synchronous valve to control the parallel extension and retraction stroke of the hydraulic cylinders; the horizontal hydraulic cylinder adopts a duplex hydraulic control one-way valve to lock the stroke ending position; the supporting hydraulic cylinder adopts a balance valve as a safe locking mode of a stroke ending position.
8. The ground penetrating radar special track for shield tunnel grouting detection according to claim 7, wherein: the distance measuring sensor adopts a laser distance measuring sensor.
9. The ground penetrating radar special track for shield tunnel grouting detection according to claim 7, wherein: the distance measuring sensor and the hydraulic system are connected with a control system, the control system is an embedded industrial control system, six distance detection data of the distance measuring sensor are calculated through an internal algorithm, the transverse moving stroke of the horizontal hydraulic cylinder and the telescopic stroke of the supporting hydraulic cylinder are obtained, and the hydraulic cylinder is controlled to operate through the hydraulic system, so that the circular track is positioned at the position coaxial with any tunnel section.
10. The ground penetrating radar special track for shield tunnel grouting detection according to claim 1, wherein: the hydraulic system adopts a closed loop.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010781574.2A CN111911228B (en) | 2020-08-06 | 2020-08-06 | Ground penetrating radar special track for shield tunnel grouting detection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010781574.2A CN111911228B (en) | 2020-08-06 | 2020-08-06 | Ground penetrating radar special track for shield tunnel grouting detection |
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| Publication Number | Publication Date |
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| CN111911228A true CN111911228A (en) | 2020-11-10 |
| CN111911228B CN111911228B (en) | 2022-07-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113882865A (en) * | 2021-09-15 | 2022-01-04 | 上海市基础工程集团有限公司 | Emergency matching device suitable for subway shield tunnel construction |
| CN114370278A (en) * | 2021-12-02 | 2022-04-19 | 山东大学 | Device and method for detecting shield tunnel duct piece and grouting effect behind wall |
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| JPH1088998A (en) * | 1996-09-12 | 1998-04-07 | Mitsubishi Electric Corp | Method for detecting and noticing rock fall inside of tunnel |
| JPH1088997A (en) * | 1996-09-12 | 1998-04-07 | Shinko Electric Co Ltd | In-tunnel fire-extinguishing robot |
| CN2921281Y (en) * | 2006-05-17 | 2007-07-11 | 孟平 | Byoyancy self-balancing tunnel two-lining concrete shuttering trolley |
| CN106672827A (en) * | 2016-10-27 | 2017-05-17 | 苏州大方特种车股份有限公司 | Tunnel rail laying crane |
| CN108906790A (en) * | 2018-08-20 | 2018-11-30 | 中铁工程服务有限公司 | A kind of walking tunnel duct piece automatic flushing device |
| CN110542886A (en) * | 2019-09-06 | 2019-12-06 | 上海市基础工程集团有限公司 | Ground penetrating radar special machine tool for shield tunnel grouting detection |
| CN111271089A (en) * | 2019-12-27 | 2020-06-12 | 上海市基础工程集团有限公司 | Mobile device suitable for large tunnel wall post-grouting |
-
2020
- 2020-08-06 CN CN202010781574.2A patent/CN111911228B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1088998A (en) * | 1996-09-12 | 1998-04-07 | Mitsubishi Electric Corp | Method for detecting and noticing rock fall inside of tunnel |
| JPH1088997A (en) * | 1996-09-12 | 1998-04-07 | Shinko Electric Co Ltd | In-tunnel fire-extinguishing robot |
| CN2921281Y (en) * | 2006-05-17 | 2007-07-11 | 孟平 | Byoyancy self-balancing tunnel two-lining concrete shuttering trolley |
| CN106672827A (en) * | 2016-10-27 | 2017-05-17 | 苏州大方特种车股份有限公司 | Tunnel rail laying crane |
| CN108906790A (en) * | 2018-08-20 | 2018-11-30 | 中铁工程服务有限公司 | A kind of walking tunnel duct piece automatic flushing device |
| CN110542886A (en) * | 2019-09-06 | 2019-12-06 | 上海市基础工程集团有限公司 | Ground penetrating radar special machine tool for shield tunnel grouting detection |
| CN111271089A (en) * | 2019-12-27 | 2020-06-12 | 上海市基础工程集团有限公司 | Mobile device suitable for large tunnel wall post-grouting |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113882865A (en) * | 2021-09-15 | 2022-01-04 | 上海市基础工程集团有限公司 | Emergency matching device suitable for subway shield tunnel construction |
| CN114370278A (en) * | 2021-12-02 | 2022-04-19 | 山东大学 | Device and method for detecting shield tunnel duct piece and grouting effect behind wall |
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| Publication number | Publication date |
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| CN111911228B (en) | 2022-07-08 |
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