CN113701705B - Automatic monitoring method for absolute deformation of tunnel section - Google Patents
Automatic monitoring method for absolute deformation of tunnel section Download PDFInfo
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- CN113701705B CN113701705B CN202110852516.9A CN202110852516A CN113701705B CN 113701705 B CN113701705 B CN 113701705B CN 202110852516 A CN202110852516 A CN 202110852516A CN 113701705 B CN113701705 B CN 113701705B
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- 238000012544 monitoring process Methods 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000006073 displacement reaction Methods 0.000 claims abstract description 84
- 239000011435 rock Substances 0.000 claims abstract description 37
- 238000005553 drilling Methods 0.000 claims abstract description 28
- 230000001133 acceleration Effects 0.000 claims abstract description 11
- 238000009434 installation Methods 0.000 claims abstract description 11
- 238000013461 design Methods 0.000 claims description 3
- 238000004873 anchoring Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000010276 construction Methods 0.000 description 4
- 238000005422 blasting Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008520 organization Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
Abstract
The invention discloses an automatic monitoring method for absolute deformation of a tunnel section. It comprises the following steps: drilling a hole in the deep part of surrounding rock of the tunnel at one side of the section of the deformed tunnel, and burying a multipoint displacement meter in the drilled hole; installing a plurality of hard pipes on the inner wall or the inside of a tunnel lining structure one by one, wherein two adjacent hard pipes are connected by adopting a hose, and acceleration sensors are installed in single hard pipes; installing an installation base at the hole opening of the drill hole, and firmly connecting the installation base with a single section of hard tube corresponding to one end head of the array displacement meter; connecting the data acquisition equipment with an array displacement meter and a multipoint displacement meter respectively; and connecting the terminal equipment with the data acquisition equipment, receiving the monitoring data uploaded by the data acquisition equipment by the terminal equipment, and analyzing and calculating the monitoring data by using the equipped software. According to the method, the relative deformation data and the absolute deformation data are overlapped, so that the absolute deformation data of the inner wall of the tunnel section relative to the deep motionless point of the surrounding rock are obtained.
Description
Technical Field
The invention relates to the technical field of tunnel deformation monitoring, in particular to an automatic monitoring method for absolute deformation of a tunnel section.
Background
The water delivery engineering is an effective way for solving the problem of uneven space-time distribution of water resources in China, and TBM tunnels (Tunnel Boring Machine, TBM for short, tunnel boring machines), shield tunnels, drilling and blasting tunnels and the like are main forms of the water delivery engineering. The tunnels often pass through urban underground, mountain, river and the like, but TBM or shield machine construction and drilling, explosion, excavation and blasting can influence adjacent rock-soil body stratum or ground buildings, and the problems of overlarge ground settlement, uneven ground settlement and the like can be caused. The full-section deformation of the inner wall of the surrounding rock of the tunnel is an index for intuitively evaluating the influence degree and is also an important basis for judging the safety of the tunnel in the construction process, so that the method for timely and continuously acquiring the full-section deformation form of the inner wall of the surrounding rock of the tunnel has important significance.
At present, in actual tunnel engineering, the conventional monitoring method for deformation of the inner wall of the surrounding rock of the tunnel comprises the following steps: convergence method, bassett method, total station method, etc. The convergence gauge method is characterized in that hooks are arranged on the section of the tunnel in the circumferential direction manually, and the distance between the two hooks is measured by using a steel ruler convergence gauge. The basalt method is to measure the convergence deformation of a tunnel by using a triangle structure formed by a long arm and a short arm and an inclination sensor on the arm, and the triangle structure in the method affects the passing area of the tunnel. The total station method adopts manual standing at a fixed point outside the section to optically observe different measuring points on the section, and calculates vault subsidence or horizontal convergence deformation data through conversion.
When deformation observation is carried out on the surrounding rock inner walls of a TBM tunnel, a shield tunnel and a drilling and blasting method tunnel, the observation space is narrow, the observation time is very limited, and the conventional monitoring method generally has the problems of low automation degree, high observation cost, influence on main body construction, section passing and the like. Although the patent 'an automatic monitoring system for the convergence deformation of the tunnel section' (publication number: CN 110186420A) can realize the automatic monitoring of the convergence deformation of the tunnel section, the measurement result is that the relative deformation of the tunnel section relative to the tail end or the head end of the monitoring equipment cannot be established, namely the absolute deformation data of the tunnel section cannot be obtained. The method can only acquire the local relative deformation condition of the section of the tunnel, cannot acquire the whole absolute deformation, and is difficult to accurately and comprehensively judge the absolute deformation rule of the full section of the tunnel.
Disclosure of Invention
The invention aims to provide an automatic monitoring method for absolute deformation of a tunnel section, which realizes automatic monitoring of absolute deformation of the whole section of the inner wall of a surrounding rock of a tunnel, reduces the manual observation cost, and simultaneously avoids the defect of unclear knowledge of the absolute deformation rule of the tunnel section caused by monitoring only relative deformation of the tunnel section.
In order to achieve the purpose, the invention provides an automatic monitoring method for absolute deformation of a tunnel section, which is characterized by comprising the following steps:
step 1), drilling holes in the deep part of surrounding rock of a tunnel on one side of the tunnel section according to the deformation tunnel section determined by tunnel engineering monitoring design, burying N measuring rods with different lengths in the multi-point displacement meter in the holes in parallel at intervals, wherein one end head of each measuring rod is provided with a displacement sensor, the other end head is provided with an anchor head in anchoring connection with the deep part of the surrounding rock, and the anchor head at the deepest position is regarded as a fixed point of the deep part of the surrounding rock;
step 2), determining the length and the number of single-section hard pipes in the array displacement meter according to the section size of the tunnel, installing a plurality of sections of hard pipes one by one on the inner wall or inside a lining structure of the tunnel, connecting two adjacent sections of hard pipes by adopting hoses, and installing acceleration sensors in the single section of hard pipes;
step 3), installing an installation base capable of penetrating through the measuring rod at the hole opening of the drill hole, and firmly connecting the installation base with a single section of hard tube corresponding to one end head of the array displacement meter;
step 4), connecting the data acquisition equipment with the array displacement meter and the multipoint displacement meter respectively, and acquiring and storing monitoring data of the array displacement meter and the multipoint displacement meter in real time;
and 5) connecting the terminal equipment with the data acquisition equipment, sending an automatic telemetry instruction to the data acquisition equipment by the terminal equipment to obtain various monitoring data, receiving the monitoring data uploaded by the data acquisition equipment, and analyzing and calculating the monitoring data by using equipped software to obtain absolute deformation data of the inner wall of the tunnel section relative to the deep motionless point of the surrounding rock.
Further, in the step 1), a hole is drilled on one side of the section of the tunnel towards the deep part of surrounding rock of the tunnel along the horizontal direction, N measuring rods with different lengths are buried in the horizontal hole horizontally, and the displacement sensor corresponding to the longest measuring rod is used for monitoring the absolute displacement data of the drilling hole opening relative to the fixed point of the deep part of the surrounding rock in real time.
Further, the drilling hole depth is larger than the double tunnel diameter.
Further, N is 6 or less.
Further, each measuring rod is provided with a supporting ring at intervals along the length direction, and the supporting rings are used for preventing the measuring rod from knotting or twisting.
Further, the displacement sensor is fixed to the mounting base by a mounting plate.
Further, in the step 2), each section of the hard pipe is provided with an acceleration sensor at the middle part, and each acceleration sensor is used for monitoring deformation form data of the inner wall of the tunnel at the corresponding position in real time, so that the array displacement meter which is cooperatively deformed with the tunnel section can determine relative deformation form data of the tunnel section relative to one end head of the array displacement meter.
Still further, the individual sections of the hard tube length specification have 0.3m, 0.5m and 1.0m.
Still further, the array displacement meter still includes the fixture with the one-to-one correspondence in a plurality of sections hard tube both ends, the fixture is fixed to be set up on tunnel lining structure inner wall surface for with the hard tube card that corresponds it go into fixedly.
Further, the clamp is connected with corresponding expansion screws on the inner wall of the tunnel lining structure, and the expansion screws are arranged in expansion holes drilled on the inner wall of the tunnel lining structure.
The invention has the advantages that:
according to the automatic monitoring method for absolute deformation of the tunnel section, provided by the invention, the relative deformation of the tunnel section relative to one end head of the array displacement meter is monitored in real time on one hand, the absolute displacement of the drilling hole opening relative to the surrounding rock deep motionless point is monitored in real time on the other hand, and the relative deformation data and the absolute deformation data are superimposed to obtain the absolute deformation data of the inner wall of the tunnel section relative to the surrounding rock deep motionless point.
Different from the conventional monitoring method, the invention can greatly reduce the monitoring cost on the premise of ensuring high-frequency and high-precision monitoring. Compared with the patent 'a tunnel section convergence deformation automatic monitoring system' (publication number: CN 110186420A), the invention avoids the defect that the absolute deformation rule of the tunnel section is not known clearly due to the fact that only the relative deformation of the tunnel section is monitored.
Drawings
FIG. 1 is a schematic diagram of a front view structure of structural member arrangement in an automatic monitoring method for absolute deformation of a tunnel section;
FIG. 2 is an enlarged view of a portion of the array displacement meter of FIG. 1;
FIG. 3 is an enlarged view of a portion of the multi-point displacement meter of FIG. 1;
FIG. 4 is a flow chart of an automatic monitoring method for absolute deformation of a tunnel section;
in the figure: the system comprises an array displacement meter 1, a hard pipe 11, a hose 12, an acceleration sensor 13, a clamp 14, a multipoint displacement meter 2, a measuring rod 21, a first measuring rod 21-1, a second measuring rod 21-2, a third measuring rod 21-3, a displacement sensor 22, a mounting base 23, a mounting plate 24, a fixing bolt 25, an anchor head 26, a supporting ring 27, a data acquisition device 3, a terminal device 4, a lining structure 5, a surrounding rock 6 and a drilling hole 7.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the invention.
The invention discloses an automatic monitoring method for absolute deformation of a tunnel section, which comprises the following steps:
step 1), drilling holes in the deep part of surrounding rock 6 of a tunnel according to the deformation tunnel section determined by tunnel engineering monitoring design, burying N measuring rods 21 with different lengths in a multipoint displacement meter 2 in the drill holes 7 in parallel and at intervals, wherein each measuring rod 21 is provided with a displacement sensor 22 at one end, an anchor head 26 in anchored connection with the deep part of the surrounding rock 6 is arranged at the other end, and the anchor head 26 at the deepest position is regarded as a fixed point in the deep part of the surrounding rock 6.
As shown in fig. 1 and 3, in the above technical solution, a hole is drilled in a horizontal direction in a side of a section of a deformed tunnel toward a depth of a surrounding rock 6 of the tunnel, three measuring rods 21 with different lengths in a multipoint displacement meter 2 are buried in the drilled hole 7 horizontally, and the three measuring rods 21 are respectively stainless steel measuring rods. Wherein the first measuring staff 21-1 has a length of 30 meters, the second measuring staff 21-2 has a length of 15 meters, and the third measuring staff 21-3 has a length of 5 meters.
The displacement sensor 22 is used for monitoring in real time absolute displacement data at the aperture of the borehole 7 relative to the position of the corresponding measuring staff anchor head 26. The anchor head 26 at the other end of the first measuring rod 21-1 (i.e. the longest measuring rod) is regarded as a deep stationary point of the surrounding rock 6. The displacement sensor 22 at one end of the first measuring rod 21-1 (i.e. the longest measuring rod) is used for monitoring the absolute displacement vector of the hole opening of the drilling hole 7 relative to the deep stationary point of the surrounding rock 6 in real time. The tunnel diameter is 6m, and the 7 holes of the horizontal drilling hole are 30m deep. The diameter phi of the drilling hole 7 is 200mm (the diameter of the drilling hole 7 is specifically determined according to the size of the multipoint displacement meter 2, the diameter of the drilling hole 7 is not limited by the invention), and the diameter phi of the drilling hole 7 of the rest 29.5m is 110mm.
The stainless steel spindle 21 is chosen to be assembled in situ at the aperture of the borehole 7 due to installation space and installation conditions. Safety ropes are used during installation in order to be able to pull the measuring rod 21 back if necessary.
The assembly of the measuring bars 21 requires an orderly organization, the installation must be started in the order of the longest measuring bar to the shortest measuring bar, and each measuring bar 21 is connected first from the anchor head 26, and the connected length is noted to control the installation position of the next anchor head 26. The identification of the anchor heads (measuring points) 26 is performed during the installation process, so that the confusion of the positions of the anchor heads 26 is prevented, each anchor head 26 needs to be tied with a safety rope, and a supporting ring 27 is arranged on each measuring rod 21 at a certain distance to prevent the measuring rod 21 from knotting and twisting.
The mounting base 23 is preassembled before being mounted as much as possible, which is convenient to overcome the narrow and inconvenient construction site and can improve the work efficiency by times. The measuring rod 21 and the mounting base 23 are correspondingly connected according to the number of the measuring rod 21 on site, meanwhile, the displacement sensor 22 is inserted into a mounting hole in the mounting plate 24, after the connecting point of the measuring rod 21 is reached, the displacement sensor 22 is applied with certain pressure to the connecting direction and screwed into a connecting hole at the top of the measuring rod 21 clockwise, and finally, the mounting plate 24 and the mounting base 23 are connected and screwed by using the fixing bolt 25. The part of the longest measuring rod 21-1 extending out of the mounting base 23 is firmly connected with one end head of the array displacement meter 1, the anchor head 26 of the measuring rod 21-1 is anchored at the position of tens of meters deep in surrounding rock of a tunnel, the anchor head 26 can be regarded as an immobile point, and the displacement sensor 22 of the measuring rod 21-1 is used for monitoring absolute displacement data of the orifice of the drill hole 7 relative to the immobile point deep in the surrounding rock 6 in real time.
Step 2), determining the length and the number of single-section hard pipes 11 in the array displacement meter 1 according to the section size of a tunnel, installing a plurality of sections of hard pipes 11 on the inner wall or the inside of a tunnel lining structure 5 one by one, connecting two adjacent sections of hard pipes 11 by adopting flexible pipes 12, and installing acceleration sensors 13 on the single section of hard pipes 11.
As shown in fig. 1 and 2, in the above technical solution, the array displacement meter 1 is disposed on the inner wall surface of the tunnel lining structure 5, the array displacement meter 1 further includes clamps 14 corresponding to two ends of the plurality of hard pipes 11 one by one, and the clamps 14 are fixedly disposed on the inner wall surface of the tunnel lining structure 5, and are used for clamping and fixing the hard pipes 11 corresponding to the array displacement meter. In the installation process, according to the length of a single hard pipe 11, expansion holes are continuously drilled on the inner wall of the lining structure 5, the clamps 14 are installed on the inner wall one by combining expansion screws, and then the hard pipes 11 of the array displacement meter 1 are clamped into the clamps 14 one by one, so that the section of a tunnel and the array displacement meter 1 cooperatively deform, and the sensing of the relative deformation of the tunnel is realized. And each section of hard pipe 11 is provided with an acceleration sensor 13 in the middle, and each acceleration sensor 13 is used for monitoring deformation form data of the inner wall of the tunnel at the corresponding position in real time, so that the array displacement meter 1 which is deformed cooperatively with the tunnel section can determine the relative deformation form data of the tunnel section relative to one end head of the array displacement meter 1.
The length specification of the hard pipe 11 of a single section is 0.3m, 0.5m and 1.0m. In the above technical solution, the length of the single section of the hard tube 11 is 0.3 m.
And 3) firmly connecting the preassembled mounting base 23 with the single-section hard tube 11 corresponding to one end head of the array displacement meter 1 at the hole opening of the drilling hole 7, wherein a welding mode can be adopted, and the invention does not limit the connection mode of the mounting base 23 and the single-section hard tube 11 corresponding to one end head of the array displacement meter 1.
And 4) respectively connecting the data acquisition equipment 3 with the array displacement meter 1 and the multipoint displacement meter 2 by cables, and acquiring and storing relative deformation form data of the section of the tunnel relative to one end head of the array displacement meter 1 and absolute displacement data of the hole opening of the drilling hole 7 relative to the deep fixed point of the surrounding rock 6 in real time.
Step 5), connecting the terminal equipment 4 with the data acquisition equipment 3 through a cable, and sending an automatic telemetry instruction to the data acquisition equipment 3 by the terminal equipment 4 to obtain relative deformation form data of the tunnel section relative to one end head of the array displacement meter 1 and absolute displacement data of the deep motionless point of the hole opening of the drilling hole 7 relative to the surrounding rock 6. The terminal equipment 4 receives the monitoring data uploaded by the data acquisition equipment 3, analyzes and calculates relative deformation form data of the tunnel section relative to one end head of the array displacement meter 1 and absolute displacement data of the hole opening of the drilling 7 relative to the deep fixed point of the surrounding rock 6 by using equipped software, and superimposes the absolute displacement vector measured by the displacement sensor 22 corresponding to the longest measuring rod 21-1 and the relative vector measured by the array displacement meter 1 to obtain absolute deformation data of the inner wall of the tunnel section relative to the deep fixed point of the surrounding rock 6. The specific process flow is shown in fig. 4.
The invention relates to a monitoring system corresponding to an automatic monitoring method for absolute deformation of a tunnel section, which comprises the following steps: the system comprises an array displacement meter 1 for monitoring the relative deformation of the section of a tunnel in real time, wherein the array displacement meter 1 is arranged on the inner wall or inside a tunnel lining structure 5, a multipoint displacement meter 2 is arranged at one end head of the array displacement meter 1, and the multipoint displacement meter 2 is buried in a drilling hole 7 from the tunnel wall to the deep part of a surrounding rock 6 and is used for monitoring the absolute displacement of an orifice of the drilling hole 7 relative to a fixed point at the deep part of the surrounding rock 6 in real time; the system also comprises a data acquisition device 3 and a terminal device 4, wherein the data acquisition device 3 is respectively connected with the array displacement meter 1 and the multipoint displacement meter 2 and is used for acquiring and storing monitoring data of the array displacement meter 1 and the multipoint displacement meter 2 in real time; the terminal equipment 4 is connected with the data acquisition equipment 3 and is used for sending an automatic telemetry instruction to the data acquisition equipment 3, receiving the monitoring data uploaded by the data acquisition equipment 3 and analyzing the related data to obtain absolute deformation data of the inner wall of the tunnel section relative to the deep motionless point of the surrounding rock 6.
What is not described in detail in this specification is prior art known to those skilled in the art.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (7)
1. The automatic monitoring method for the absolute deformation of the section of the tunnel is characterized by comprising the following steps:
step 1), drilling holes in the deep part of surrounding rock (6) of a tunnel according to a deformation tunnel section determined by tunnel engineering monitoring design, burying N measuring rods (21) with different lengths in a multipoint displacement meter (2) in the holes (7) in parallel at intervals, wherein a displacement sensor (22) is arranged at one end head of each measuring rod (21), an anchor head (26) in anchoring connection with the deep part of the surrounding rock (6) is arranged at the other end head, and the anchor head (26) at the deepest position is regarded as a deep fixed point of the surrounding rock (6);
in the step 1), drilling holes in the horizontal direction on one side of the section of the tunnel towards the deep part of surrounding rock (6) of the tunnel, horizontally burying N measuring rods (21) with different lengths in the horizontal drilling holes (7), and monitoring absolute displacement data of the position of an orifice of the drilling holes (7) relative to a deep part fixed point of the surrounding rock (6) in real time by using a displacement sensor (22) corresponding to the longest measuring rod (21);
the displacement sensor (22) is fixed on the mounting base (23) through the mounting plate (24);
step 2), determining the length and the number of single-section hard pipes (11) in the array displacement meter (1) according to the section size of a tunnel, installing a plurality of sections of hard pipes (11) on the inner wall or the inside of a tunnel lining structure (5) one by one, connecting two adjacent sections of hard pipes (11) by adopting hoses (12), and installing acceleration sensors (13) in the single section of hard pipes (11);
in the step 2), an acceleration sensor (13) is arranged at the middle part of each hard pipe (11), and each acceleration sensor (13) is used for monitoring deformation form data of the inner wall of the tunnel at a corresponding position in real time, so that the array displacement meter (1) which is cooperatively deformed with the section of the tunnel can determine the relative deformation form data of the section of the tunnel relative to one end head of the array displacement meter (1);
step 3), installing an installation base (23) capable of penetrating through the measuring rod (21) at the hole opening of the drilling hole (7), and firmly connecting the installation base (23) with a single-section hard tube (11) corresponding to one end head of the array displacement meter (1);
step 4), connecting the data acquisition equipment (3) with the array displacement meter (1) and the multipoint displacement meter (2) respectively, and acquiring and storing monitoring data of the array displacement meter (1) and the multipoint displacement meter (2) in real time;
and 5), connecting the terminal equipment (4) with the data acquisition equipment (3), sending an automatic telemetry instruction by the terminal equipment (4) to the data acquisition equipment (3) to obtain various monitoring data, receiving the monitoring data uploaded by the data acquisition equipment (3), analyzing and calculating the monitoring data by using equipped software, and superposing the absolute displacement data and the relative deformation form data to obtain the absolute deformation data of the deep immobile point of the inner wall of the tunnel section relative to the surrounding rock (6).
2. The automated monitoring method for absolute deformation of a tunnel section according to claim 1, wherein: and the hole depth of the drilling hole (7) is larger than the diameter of the double tunnel.
3. The automatic monitoring method for absolute deformation of a tunnel section according to claim 1 or 2, characterized by comprising the steps of: and N is less than or equal to 6.
4. The automated monitoring method for absolute deformation of a tunnel section according to claim 3, wherein: each measuring rod (21) is provided with a supporting ring (27) which is used for preventing the measuring rod (21) from knotting or twisting at intervals along the length direction.
5. The automated monitoring method for absolute deformation of a tunnel section according to claim 1, wherein: the length specification of the single-section hard tube (11) is 0.3m, 0.5m and 1.0m.
6. The automated monitoring method for absolute deformation of a tunnel section according to claim 5, wherein: the array displacement meter (1) further comprises clamps (14) which are in one-to-one correspondence with the two ends of the hard pipes (11), wherein the clamps (14) are fixedly arranged on the inner wall surface of the tunnel lining structure (5) and used for clamping and fixing the hard pipes (11) corresponding to the clamps.
7. The automated monitoring method for absolute deformation of a tunnel section according to claim 6, wherein: the fixture (14) is connected with corresponding expansion screws on the inner wall of the tunnel lining structure (5), and the expansion screws are arranged in expansion holes drilled on the inner wall of the tunnel lining structure (5).
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| CN114279394B (en) * | 2021-12-24 | 2024-04-02 | 广西北投交通养护科技集团有限公司 | Real-time online continuous monitoring method for tunnel deformation |
| CN116698204A (en) * | 2023-05-04 | 2023-09-05 | 中国科学院武汉岩土力学研究所 | High-precision surrounding rock temperature monitoring system and monitoring method suitable for low-temperature environment |
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