CN220380501U - Device for measuring tunnel super-underexcavation - Google Patents
Device for measuring tunnel super-underexcavation Download PDFInfo
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- CN220380501U CN220380501U CN202320694423.2U CN202320694423U CN220380501U CN 220380501 U CN220380501 U CN 220380501U CN 202320694423 U CN202320694423 U CN 202320694423U CN 220380501 U CN220380501 U CN 220380501U
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- tunnel
- support
- laser
- measuring
- laser instrument
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- 238000009412 basement excavation Methods 0.000 claims abstract description 31
- 229910000831 Steel Inorganic materials 0.000 claims description 32
- 239000010959 steel Substances 0.000 claims description 32
- 230000002787 reinforcement Effects 0.000 claims 1
- 238000010276 construction Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 6
- 238000005259 measurement Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 7
- 241000282376 Panthera tigris Species 0.000 description 5
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005491 wire drawing Methods 0.000 description 1
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The utility model relates to the technical field of tunnel construction, in particular to a device for measuring the over-and-under excavation of a tunnel, which comprises a support, wherein the support is detachably fixed on a primary supporting surface of the tunnel and is used for supporting a laser instrument, the laser instrument can emit first laser parallel to the axis of the tunnel, and whether the over-and-under excavation or the under excavation of the position can be judged by measuring the distance from each point inside the tunnel to the first laser. Through setting up the laser instrument on the support, the laser instrument sends the first laser that is on a parallel with the tunnel axis, through comparing the distance L2 that has excavated each point to first laser and the distance L1 that laser instrument department just supported the face to first laser, can judge whether the excavation everywhere is overexcavated or underexcavated, in tunnel face department, beat the point on the tunnel face and the distance L1 that laser instrument department just supported the face to first laser through first laser, can instruct the excavation, solved the in-process that the prior art exists at tunnel excavation, the operation degree of difficulty that whether the measurement excavated is overexcavated is great and complex operation's problem.
Description
Technical Field
The utility model relates to the technical field of tunnel construction, in particular to a device for measuring tunnel super-underexcavation.
Background
In the process of excavating a tunnel, the tunnel needs to be excavated strictly according to designed parameters. If the position is not dug to meet, the position is not dug, and the excavation needs to be continued to a preset position; if the concrete is beyond the preset position, the concrete is overdrawn, and the concrete needs to be filled in the subsequent supporting construction, so that the cost is not saved. Therefore, in the process of excavating the tunnel, whether the excavation boundary line has over-excavation or under-excavation conditions is required to be measured.
There are two common detection modes, one is suspension wire and lead wire measurement, and the other is instrument measurement. And (3) measuring a suspension wire lead, namely determining a control wire at the top of the tunnel along the inner clearance of the side wall of the tunnel by a neutral line offset distance of 1.0m, and testing the distance from the primary supporting surface to the control wire on site. However, the difficulty of on-site wire drawing is high, and the control wire nailed is easy to fall off, so that the operation is complex. The instrument measurement rule is to use total station to set up station in the process of excavation, and the directional site survey excavates the boundary line and accords with excavation headroom and steel bow member and erect the size requirement. However, the environment of the construction site is very complex, so that the operation is very difficult and complicated.
Disclosure of Invention
The utility model aims at: aiming at the problems of the prior art that whether the operation difficulty is large and the operation is complex when the tunnel is excavated or not is measured in the process of excavating the tunnel, the device for measuring the tunnel over-and-under excavation is provided.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the utility model provides a measure device that tunnel was surpassed and was dug, contains support and measuring device, the support can dismantle and be fixed in the preliminary tread of tunnel, the support is used for bearing laser instrument, the laser instrument can send to be on a parallel with the first laser of axis of tunnel, measuring device is used for measuring the each point on the preliminary tread reaches the distance of first laser, through the correspondence point of the different sections of preliminary tread extremely the excavation profile difference of the corresponding point of different sections can be obtained to the distance of first laser.
The support can be dismantled and be fixed in the preliminary bracing face in tunnel, compares directly with placing the support on ground, is difficult for being collided, then stability is better. If the support is directly fixed on the ground, more materials are needed when the self height of the support needs to be lifted, so that the device saves related materials and has good economical efficiency. The straight line determined by two points on different sections is parallel to the axis of the tunnel, and the two points are corresponding points of different sections. The difference value of the excavation profile, namely the difference value of the distances from the corresponding points of different sections to the first laser. The first laser emitted by the laser instrument is parallel to the axis of the tunnel, and whether the excavated part is overexcavated or underexcavated can be judged by comparing the excavation profile difference values of different sections. At the position of an unexcavated tunnel face, a point on the tunnel face is driven by first laser to push a corresponding distance to one side of an excavation line of a tunnel close to the point, so that a boundary profile of a preset excavation is found, and the excavation can be guided.
As a preferable mode of the utility model, a track is detachably arranged on the reinforcing steel bar of the primary supporting surface, the track is perpendicular to the axis of the tunnel, and the bracket can move along the track.
The laser instrument can be along ascending or descending of the track, so that the excavation of areas with different heights of the face can be guided, the excavation faces with different heights can be checked to excavate, the construction precision of the tunnel is facilitated, and the integral quality of the tunnel is also facilitated.
As a preferable scheme of the utility model, a plurality of round holes are evenly distributed on the rail, through holes are formed in the bracket, and a roller penetrates through the through holes and the round holes and is used for locking the position of the bracket on the rail.
As a preferred embodiment of the utility model, the height of the track is no more than 2.5m.
The height of the track is not more than 2.5m, which is beneficial to operation.
As a preferred scheme of the utility model, the laser instrument can also emit vertical second laser, and the measuring device can judge the height of the steel arch by measuring the distance from the laser instrument to the steel arch in the tunnel along the direction of the second laser.
When the tunnel is subjected to primary support, a steel arch needs to be arranged on the steel bars of the primary support, and the steel arch is attached to the primary support surface and is used for carrying out primary support on the tunnel. The height from the laser instrument to the steel arch is measured, so that the precision of the subsequent construction of the tunnel is facilitated, and the precision of the tunnel is also facilitated.
As a preferable scheme of the utility model, the bracket comprises a steel pipe frame, and the steel pipe frame is fixed on the steel arch through a U-shaped tiger mouth clamp.
The size of the steel pipe rack is determined according to actual requirements. The size of the U-shaped tiger mouth clamp is determined according to actual requirements. The primary support surface of the tunnel comprises a steel arch. The steel pipe frame is fixed on the steel arch through the U-shaped tiger mouth clamp, and then the bracket is also fixed on the steel arch. The U-shaped tiger mouth clamp is connected with the steel arch frame, so that the bracket can be detached, and the position of the bracket can be moved according to the requirement.
As a preferable scheme of the utility model, one side of the support far away from the laser instrument is provided with at least one support rod, two ends of the support rod are respectively connected with the bottom of the support and the primary supporting surface, and the support rod is used for supporting the support in an inclined manner.
The support rod is used for reinforcing the support, so that deformation or damage of the support due to the fact that the weight of the laser instrument cannot be born is reduced, the stability of the whole device is facilitated, and the construction efficiency delayed due to the damage of the device is also reduced.
As a preferred embodiment of the present utility model, the support is a plate, and the wing plates of the plate are located on two sides of the support perpendicular to the axis of the tunnel.
The wing plates are arranged on the two sides of the bracket, so that the bending resistance of the bracket is enhanced, the stability of the whole bracket is facilitated, and the service life of the bracket can be prolonged.
As a preferable aspect of the present utility model, the bracket is a steel member.
The strength of the steel material is high, so that the steel material cannot be easily deformed when bearing the laser. And the dead weight of the steel material is light, and the steel material is convenient to carry and install. The bracket is made of steel materials, and compared with the steel, the cost performance is best.
As a preferable mode of the present utility model, the laser is fixed to the bracket by a bolt.
The limiting piece fixes the position of the laser instrument, is favorable for the accuracy of integral excavation and the accuracy of measuring whether overexcavation and underexcavation are carried out, and is favorable for the construction quality of tunnels.
As a preferred embodiment of the present utility model, the bracket is fixed to the primary support surface by a plurality of expansion screws.
In summary, due to the adoption of the technical scheme, the beneficial effects of the utility model are as follows:
1. the utility model provides a measure device of tunnel super underexcavation, through set up the support on the face of just supporting, set up the laser instrument on the support, the laser instrument can send the first laser that is on a parallel with the tunnel axis, through comparing the distance L2 that has excavated each point to first laser and the distance L1 that laser instrument department just supported the face to first laser, can judge whether the excavation everywhere is super or underexcavated, in the face department of not excavating, beat the point on the face through first laser and the distance L1 that laser instrument department just supported the face to first laser, can instruct the excavation, this device easy operation has solved the in-process that the prior art exists at tunnel excavation, the operation degree of difficulty of measuring whether the super underexcavation of excavation is great and complex operation's problem.
Drawings
Fig. 1 is a schematic structural diagram of an apparatus for measuring tunnel undermining in embodiment 1;
fig. 2 is an enlarged view of a in fig. 1.
The marks in the figure: 1-bracket, 2-laser instrument, 3-supporting rod, 4-primary supporting surface, 5-wing plate, 7-first laser, 8-second laser, 9-track and 10-round hole.
Detailed Description
The present utility model will be described in detail with reference to the accompanying drawings.
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Example 1
As shown in fig. 1, a device for measuring tunnel super-underexcavation comprises a support 1 and a measuring device, wherein the support 1 is detachably fixed on a primary supporting surface 4 of a tunnel, the support 1 is used for supporting a laser instrument 2, the laser instrument 2 can emit first laser 7 parallel to the axis of the tunnel, the measuring device is used for measuring the distance from each point on the primary supporting surface 4 to the first laser 7, and the excavation contour difference value of the corresponding points of different sections can be obtained through the distances from the corresponding points of different sections of the primary supporting surface 4 to the first laser 7.
As shown in fig. 2, a track 9 is detachably arranged on the reinforcing steel bar of the primary support surface 4, the track 9 is perpendicular to the axis of the tunnel, and the bracket 1 can move along the track 9. The track 9 is evenly provided with round holes 10 along the length direction, the rollers penetrate through the round holes 10 and then penetrate through the through holes in the support 1, and the support is fixed on the primary support surface 4 through a plurality of expansion screws. The position height of the support 1 is determined according to the actual situation.
The laser 2 is also capable of emitting a second laser 8 perpendicular to the axis of the tunnel, which second laser 8 can be used to measure the position height of the steel arch inside the tunnel.
The lower part of the support 1 is provided with a support rod 3, two ends of the support rod 3 are respectively connected with the bottom of the support 1 and the primary supporting surface 4, and the support rod 3 is used for reinforcing the support 1. The support 1 is a plate, and the wing plates 5 of the plate are positioned on two sides of the support 1 perpendicular to the axis of the tunnel, so that the bending resistance of the plate can be increased.
The first laser 7 emitted by the laser instrument 2 is parallel to the tunnel axis, and the laser instrument 2 is arranged at the section of the standard excavation. The distance L1 from the primary support surface 4 of the section at the position of the laser instrument 2 to the first laser 7 is measured, and whether the excavated position is overexcavated or underexcavated can be judged by comparing the distances L2 and L1 from the corresponding point at the excavated position to the first laser 7. At the position of an unexcavated tunnel face, a point on the tunnel face is pushed by the first laser 7 to push L1 to one side of a tunnel close to the point, so that a boundary of preset excavation is found, and excavation can be guided.
Example 2
The device for measuring tunnel super underexcavation is basically similar to the embodiment 1 in structure, except that the bracket comprises a steel pipe frame, the U-shaped tiger mouth clamp is clamped with the steel pipe frame, so that the bracket 1 is detachably fixed on the steel arch, and the size of the bracket 1 is determined according to practical conditions. The position of the bracket 1 on the steel arch can be adjusted according to the requirement, so that the position and the height of the bracket 1 can be adjusted.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.
Claims (10)
1. The utility model provides a measure device of tunnel super underexcavation, its characterized in that contains support (1) and measuring device, support (1) can dismantle and be fixed in preliminary tread (4) of tunnel, support (1) are used for bearing laser instrument (2), laser instrument (2) can send to be on a parallel with first laser (7) of the axis of tunnel, measuring device is used for measuring the distance of each point on preliminary tread (4) to first laser (7), through the corresponding point of the different sections of preliminary tread (4) to the excavation profile difference of the corresponding point of different sections can be obtained to first laser (7) distance.
2. Device for measuring tunnel undermining according to claim 1, characterized in that the reinforcement of the primary support surface (4) is detachably provided with a track (9), the track (9) being perpendicular to the tunnel axis, the support (1) being movable along the track (9).
3. The device for measuring tunnel super underexcavation according to claim 2, wherein a plurality of round holes (10) are evenly distributed on the track (9), through holes are formed in the support (1), and a roller penetrates through the through holes and the round holes (10) to lock the position of the support (1) on the track (9).
4. A device for measuring tunnel undermining according to claim 3, characterized in that the position height of the track (9) is not more than 2.5m.
5. A device for measuring tunnel super-underexcavation according to claim 1, characterized in that the laser instrument (2) is further capable of emitting a second laser (8) in a vertical direction, and the measuring device is capable of determining the height of the steel arch by measuring the distance of the laser instrument (2) from the steel arch inside the tunnel in the direction of the second laser (8).
6. A device for measuring tunnel super underexcavation according to claim 5, characterized in that the support (1) comprises a steel pipe frame which is fixed to the steel arch by means of a U-shaped jaw clamp.
7. A device for measuring tunnel super-underexcavation according to any of claims 1-6, characterized in that the support (1) further comprises at least one support bar (3), the support bar (3) being adapted to brace the support (1), the end of the support bar (3) remote from the support (1) being connected to the primary support surface (4).
8. A device for measuring tunnel undermining according to claim 7, characterized in that the support (1) comprises plates, the wings (5) of which plates are located on both sides of the support (1) perpendicular to the axis of the tunnel.
9. A device for measuring tunnel undermining according to any of claims 1-6, characterized in that the laser (2) is fastened to the support (1) by means of bolts.
10. A device for measuring tunnel undermining according to any of claims 1-6, characterized in that the support (1) is fastened to the primary support surface (4) by means of expansion screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320694423.2U CN220380501U (en) | 2023-03-31 | 2023-03-31 | Device for measuring tunnel super-underexcavation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320694423.2U CN220380501U (en) | 2023-03-31 | 2023-03-31 | Device for measuring tunnel super-underexcavation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220380501U true CN220380501U (en) | 2024-01-23 |
Family
ID=89561886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320694423.2U Active CN220380501U (en) | 2023-03-31 | 2023-03-31 | Device for measuring tunnel super-underexcavation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220380501U (en) |
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2023
- 2023-03-31 CN CN202320694423.2U patent/CN220380501U/en active Active
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