CN115182736A - Construction method of tunnel - Google Patents
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- 238000010276 construction Methods 0.000 title claims abstract description 59
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/003—Arrangement of measuring or indicating devices for use during driving of tunnels, e.g. for guiding machines
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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
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
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Abstract
The invention provides a construction method of a tunnel, which comprises the following steps: carrying out geological survey to collect geological data of a soil body and formulating a construction scheme according to the geological data; dividing a tunnel to be constructed into a plurality of unit sections; excavating earthwork of the Nth unit section, constructing to form a supporting layer, and collecting strength data of the supporting layer of the Nth unit section; providing a three-dimensional laser scanner, scanning the Nth unit segment, generating a three-dimensional model, and comparing the three-dimensional model with the standard model to acquire deformation data of the Nth unit segment; and when the strength data is higher than the set value and the deformation data is lower than the set value, excavating earthwork of the (N + 1) th unit section. The invention collects data in tunnel construction in all directions, and carries out scientific and visual construction guidance according to reports generated by the data, thereby improving the safety of tunnel construction.
Description
Technical Field
The invention relates to the technical field of tunnel construction, in particular to a tunnel construction method.
Background
At present, tunnel engineering in the building field is applied more and more commonly, shallow buried tunnels, bias tunnels, large sections and porous tunnels are more and more, and tunnel excavation may face weak and broken surrounding rocks, landslides, karst and other unfavorable geological conditions. In the tunnel construction process, the deformation condition of the surrounding rock is very important for the whole construction of the tunnel engineering, so the prevention and monitoring technical method in the construction process is very important. At present, a single processing method for monitoring and measuring surrounding rocks or forecasting advanced geology or monitoring an induction system is generally applied, for example, in CN114323091A, data are measured by a sensor and transmitted into a signal processor, and tunnel construction is guided according to collected data.
Disclosure of Invention
In view of the above situation, the invention provides a tunnel construction method, which solves the technical problems of incomplete monitoring and large potential safety hazard in the traditional construction, and data in tunnel construction are acquired in an all-around manner by using a geological survey, a segmented monitoring and measuring technology and a three-dimensional scanning technology, scientific and visual construction guidance is performed according to reports generated by the data, and the safety of tunnel construction is improved.
In order to achieve the purpose, the invention adopts the technical scheme that:
a construction method of a tunnel comprises the following steps:
s1, carrying out geological survey on a soil body in a region of a tunnel to be constructed so as to acquire geological data of the soil body, and formulating a construction scheme according to the geological data;
s2, dividing the tunnel to be constructed into a plurality of unit sections;
s3, excavating earthwork of the Nth unit section, constructing to form a supporting layer, and collecting strength data of the supporting layer of the Nth unit section, wherein N =1;
s4, providing a three-dimensional laser scanner, scanning the Nth unit segment, generating a three-dimensional model, and comparing the three-dimensional model with a standard model of the tunnel to obtain deformation data of the Nth unit segment;
s5, when the strength data are higher than the set strength value and the deformation data are lower than the set deformation value, excavating earthwork of the (N + 1) th unit section, constructing to form a supporting layer, and collecting the strength data of the supporting layer of the (N + 1) th unit section;
and (4) enabling the N = N +1, and repeating the S4-S5 until all the unit sections are excavated to form the tunnel.
The construction method of the tunnel is further improved in that geological data of the soil body is collected through a TSP advanced geological forecast system.
The construction method of the tunnel is further improved in that the geological data comprise hydrological data, topographic data, landform data, temperature, humidity, seismic data and surrounding rock strength data.
The construction method of the tunnel is further improved in that the surrounding rock strength data is matched with the design surrounding rock Jiang Dushu of the area of the tunnel to be constructed, and when the surrounding rock strength data is lower than the design surrounding rock strength data, an outer support is constructed in the area of the tunnel to be constructed.
The construction method of the tunnel is further improved in that when the anti-seismic data are collected, the method further comprises the following steps:
and providing a plurality of receivers, embedding the receivers in the region of the tunnel to be constructed at intervals, setting a plurality of detonation points in the region of the tunnel to be constructed at intervals, and detonating the detonation points so that the receivers can acquire anti-seismic data.
The construction method of the tunnel is further improved in that hydrological data, topographic data and landform data are collected through a geological radar instrument.
The construction method of the tunnel is further improved in that after the supporting layer of the Nth unit section is constructed and formed, the construction method further comprises the following steps:
and collecting pressure value data of the supporting layer, and constructing to form an inverted arch and a second lining on the inner wall of the supporting layer corresponding to the unit section when the pressure value data reaches a set pressure value and is within a set range within a certain time.
The construction method of the tunnel of the invention is further improved in that the method further comprises the following steps:
a plurality of sampling points are arranged on the inner wall of the supporting layer at intervals;
and providing a plurality of detectors, and correspondingly arranging the detectors at the sampling points to acquire the strength data of the supporting layer.
The construction method of the tunnel is further improved in that the method further comprises the steps of scanning the Nth unit section by using a three-dimensional laser scanner to obtain a plurality of point cloud data of the inner wall of the tunnel, and generating a three-dimensional model according to the point cloud data.
The construction method of the tunnel of the invention is further improved in that the method further comprises the following steps:
before generating a three-dimensional model, carrying out registration, slice extraction and fitting on the point cloud data;
and after the three-dimensional model is generated, comparing the three-dimensional model with a standard model of the tunnel and extracting deformation data of the point cloud data.
The construction method of the tunnel acquires data in tunnel construction in all directions by utilizing geological survey, unit section monitoring and three-dimensional scanning technology, carries out scientific and visual construction guidance according to reports generated by the data, improves the safety of tunnel construction, and determines the construction time of a secondary lining and an inverted arch of the inner wall of the tunnel by monitoring the continuous change of the data and analyzing the action and effect of a supporting structure; by analyzing and processing the unit section monitoring data and the three-dimensional model, the stratum stability change rule is mastered, accidents and dangerous situations are foreseen, basic data are provided for the development condition, research and decision of large deformation, and the basic data are used as the basis for adjusting and correcting support design parameters and construction methods, so that the final stable information of surrounding rocks and support lining is provided.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic view of monitoring sites of unit segments in the tunnel construction method of the present invention.
Detailed Description
To facilitate an understanding of the present invention, the following description is made in conjunction with the accompanying drawings and examples.
Referring to fig. 1, the present invention provides a tunnel construction method, which utilizes geological exploration, unit segment monitoring and a three-dimensional model to perform scientific and systematic construction guidance for each time segment of tunnel construction, wherein the method comprises the following steps:
s1, carrying out geological survey on soil in a region of a tunnel to be constructed so as to collect geological data of the soil, and formulating a construction scheme according to the geological data;
s2, dividing the tunnel to be constructed into a plurality of unit sections;
s3, excavating earthwork of the Nth unit section, constructing to form a supporting layer, and collecting strength data of the supporting layer of the Nth unit section, wherein N =1;
s4, providing a three-dimensional laser scanner, scanning the Nth unit segment, generating a three-dimensional model, and comparing the three-dimensional model with a standard model of the tunnel to obtain deformation data of the Nth unit segment;
s5, when the strength data are higher than the set strength value and the deformation data are lower than the set deformation value, excavating earthwork of the (N + 1) th unit section, constructing to form a supporting layer, and collecting the strength data of the supporting layer of the (N + 1) th unit section;
and (4) enabling the N = N +1, and repeating the S4-S5 until all the unit sections are excavated to form the tunnel.
A better implementation case of the construction method of the tunnel is that geological data of a soil body is collected through a TSP advanced geological forecast system.
In particular, the geological data includes hydrological data, topographic data, landform data, temperature, humidity, seismic data, and surrounding rock strength data.
Specifically, the surrounding rock strength data and the design surrounding rock Jiang Dushu of the area of the tunnel to be constructed are paired, when the surrounding rock strength data are lower than the design surrounding rock strength data, an outer support is constructed in the area of the tunnel to be constructed, and when the surrounding rock strength data are higher than the design surrounding rock strength data, the tunnel can be directly constructed.
Specifically, when gathering antidetonation data, still include:
and providing a plurality of receivers, embedding the receivers in the region of the tunnel to be constructed at intervals, arranging a plurality of initiation points in the region of the tunnel to be constructed at intervals, and detonating the initiation points so that the receivers can acquire anti-seismic data.
Preferably, a plurality of receiver holes are drilled at intervals in a site to be constructed, and probes of the receivers are buried in the receiver holes; providing detonating equipment, setting a plurality of blasting points at intervals in a site to be constructed, and placing a blaster of the detonating equipment in the blasting points; and starting a control switch of the initiation device to detonate the blaster, and receiving the waveband data detected by the probe by a signal instrument of the receiver when the blaster explodes.
Preferably, the TSP advanced geological prediction system comprises a TSPwin processing system, and after the TSPwin processing system processes the waveband data through programming analysis, a two-dimensional result map and a three-dimensional result map are generated, and constructors analyze the two-dimensional result map and the three-dimensional result map to draw conclusions such as surrounding rock strength and the like so as to guide the construction of the tunnel according to the conclusions.
Preferably, the TSPwin processing system is installed in an indoor computer, and the TSPwin processing system adopts a multi-wave and multi-component analysis processing technology according to the principles of tunnel seismic reflection waves and diffracted waves, and adopts an automatic processing mode as much as possible for simple, repeated and time-consuming steps, and for the processing process of explaining important conclusions, a source contrast check mode and a multi-parameter comprehensive result contrast function are set up by a program, so that the TSPwin processing system has the function of providing a two-dimensional result graph and a three-dimensional space result graph in order to facilitate geological analysis inference and explanation. The TSPwin processing system generates a TSP report after processing data, and the TSP report is appended with a result chart as follows: (1) a field data record table; (2) TSP seismic wave advance forecast achievement icon mainly includes: the seismic wave three-component original recording map, the seismic wave migration homing result map of the horizontal section and the vertical section, the TSP comprehensive geological forecast result map, the three-dimensional space geological interface distribution map, the rock mass specific velocity parameter result map and the three-dimensional space cross section scanning result map.
Specifically, hydrological data, topographic data and landform data are collected by a geological radar instrument.
Specifically, the geological radar instrument is provided with a plurality of signal triggers for controlling data acquisition, and the signal triggers comprise control modes of measuring wheel triggering and keyboard triggering;
preferably, the control mode triggered by the measuring wheel is adopted when plain terrain is collected, the control mode triggered by a keyboard is adopted when fields such as mountains, hills, tunnel faces and the like are collected, and the normal work of the measuring wheel cannot be ensured generally because the tunnel face is uneven, so the trigger mode triggered by the measuring wheel is not adopted; the triggering mode of keyboard triggering is to send command to radar control system by computer keyboard, to press keyboard to collect one data, and the antenna moves according to fixed distance to collect one data.
Preferably, the data measured by the geological radar apparatus requires, when processed: the radar record should be clear, the reflection waveform and the in-phase axis are obvious, and the unqualified record should be remeasured. The qualified records should be processed as necessary according to the recording condition, such as: editing, filtering, gain, convolution, channel analysis, speed analysis, background interference elimination and the like to obtain a time section; marking a reflected wave group of the detection object in a time section, and determining the form and scale of a reflector; the position and the shape of the reflector are determined through explanation, and the filling condition of the reflector is inferred. If necessary, a model is made for inversion analysis. The following data were submitted: a survey line layout drawing; original recording; time profile; resolving parameters and resolving results.
Preferably, stratum lithology, geological structure, unfavorable geology, hydrogeological features and the like are obtained according to the geological report, the integrity and the classification of surrounding rocks of the tunnel are judged, geological data obtained by reconnaissance and geological investigation are combined to predict the geological condition in front of the tunnel, geological disasters in construction are avoided, and the construction safety is improved.
Further, after a supporting layer of the unit section is formed by construction, the method further comprises the following steps:
and collecting pressure value data of the supporting layer, and constructing to form an inverted arch and a second lining on the inner wall of the supporting layer corresponding to the unit section when the pressure value data reaches a set pressure value and is within a set range within a certain time.
Specifically, still include:
a plurality of sampling points are arranged on the inner wall of the supporting layer at intervals;
and providing a plurality of detectors, and correspondingly arranging the detectors at the sampling points to acquire the strength data of the supporting layer.
Preferably, as shown in fig. 1, a plurality of detectors are embedded at intervals at the arch, waist and arch foot positions of the unit segment, and the detectors are used to detect the data of the arch sinking amount at the arch position, the clearance variation amount at the arch waist position, the arch sinking amount and the bulging amount at the arch foot position, and the like.
Specifically, the pressure value data includes an internal deformation amount of the support layer, a pressure value of the inner wall of the tunnel, and a pressure between the linings of the unit section.
Preferably, as shown in fig. 1, monitoring points are respectively buried at the arch top, the arch waist and the arch foot of the center line of the tunnel, and the hole is directly drilled in the rock body, wherein the buried depth of the surrounding rock is not less than 20cm. The embedded measuring point is formed by processing reinforcing steel bars, an impact electric hammer or a pneumatic drill is used for drilling, phi 25 reinforcing steel bars are embedded, after the concrete is sprayed for the first time, the concrete attached to the monitoring point is removed, and a reflector plate is adhered to the direction facing the hole. In order to prevent machines such as an excavator and the like from colliding with the pile, the pile can only be exposed by about 5 cm, a protective cover is required to be arranged at the pile measuring head, and arch crown sinking and horizontal convergence displacement measurement are arranged on the same section. In the implementation, the change of the relative position of two points around the tunnel is analyzed by utilizing the non-prism reflection of the total station and constructing the side length change of a triangle by a corner method.
Preferably, by data analysis, when the general section: when the convergence rate is more than 5mm/d, the surrounding rock is in a rapid change state, and a primary support system needs to be reinforced; when the convergence rate is less than 0.2mm/d, the arch sinking rate is less than 0.15/d, and the surrounding rock is basically stable. Special geological section: the strength and rigidity of the primary support are enhanced, and excessive deformation is strictly controlled. And (3) continuing each measurement item until 1-3 weeks after the deformation is basically stable, and prolonging the measurement time and taking reinforcement measures when the displacement of the fault fracture zone cannot be stable for a long time. Simultaneously, a temporal curve (or a scatter diagram) and a spatial relation curve are drawn for the field measurement data in time, and the stability of the surrounding rock is judged according to the displacement-time curve measured on site as follows:
in the formula: v is a displacement-time parameter
d is displacement, in mm;
u is the displacement rate;
t is time in days.
A is when d 2 u/dt 2 <When 0, the deformation rate is continuously reduced, and the displacement tends to be stable;
b when d 2 u/dt 2 If =0, the deformation rate is kept unchanged, a warning is sent out, and the support system is reinforced in time;
c when d 2 u/dt 2 >And when 0, the deformation rate is continuously increased, the stable situation of the surrounding rock enters a dangerous state, the surrounding rock needs to be stopped immediately, and effective engineering measures are taken for reinforcement.
When the displacement-time curve has a reverse bending point, the surrounding rock and the support are shown to have sudden change and are in an unstable state, at the moment, the dynamic state of the surrounding rock is closely monitored, the support is strengthened, and the excavation is suspended if necessary.
The monitoring data of the unit section can provide a basis for judging the basic stability of the surrounding rock and the supporting system, and the action and the effect of the supporting layer are analyzed through the continuous change of the monitoring data to determine the construction time of the secondary lining and the inverted arch; by analyzing and processing the monitoring data, the change rule of the stratum stability is mastered, accidents and dangerous situations are foreseen, basic data are provided for the development condition, research and decision of large deformation, and the basic data are used as the basis for adjusting and correcting the support design parameters and the construction method, so that the final stable information of surrounding rocks and support lining is provided.
And further, scanning the Nth unit section by using a three-dimensional laser scanner to obtain a plurality of point cloud data of the inner wall of the tunnel, and generating a three-dimensional model according to the point cloud data.
Specifically, still include:
before generating a three-dimensional model, carrying out registration, slice extraction and fitting on the point cloud data;
and after the three-dimensional model is generated, comparing the three-dimensional model with a standard model of the tunnel, and extracting and analyzing the point cloud data according to the deformation data.
Preferably, the scanner of the three-dimensional laser scanner is mounted in the tunnel, the target of the three-dimensional laser scanner is mounted in the tunnel at intervals, and the tunnel is scanned by the three-dimensional laser scanner to obtain the point cloud data.
Preferably, a come Scan Station P40 three-dimensional laser scanner is adopted, and information such as three-dimensional coordinates, reflectivity, texture and the like of a large number of dense points on the surface of the measured object is recorded by using the principle of laser ranging. The scanning result is directly displayed as point cloud by combining computer vision and image processing technology, and the three-dimensional model of the measured target and various drawing data such as lines, surfaces, bodies and the like can be quickly reconstructed. The comprehensive information can give a feeling that an object is truly reproduced in a computer. The tunnel point cloud internal processing comprises data downloading pretreatment, point cloud registration and splicing, point cloud slice extraction, point cloud fitting, deformation information extraction and analysis and the like.
The construction method of the tunnel acquires data in tunnel construction in all directions by utilizing geological survey, unit section monitoring and three-dimensional scanning technology, carries out scientific and visual construction guidance according to reports generated by the data, improves the safety of tunnel construction, and determines the construction time of a secondary lining and an inverted arch of the inner wall of the tunnel by monitoring the continuous change of the data and analyzing the action and effect of a supporting structure; by analyzing and processing the unit section monitoring data and the three-dimensional model, the stratum stability change rule is mastered, accidents and dangerous situations are foreseen, basic data are provided for the development condition, research and decision of large deformation, and the basic data are used as the basis for adjusting and correcting support design parameters and construction methods, so that the final stable information of surrounding rocks and support lining is provided.
The specific implementation case of the construction method of the tunnel is that the tunnel to be constructed is subjected to geological exploration, a TSP advanced geological forecast system is used, a receiver is buried in the tunnel to be constructed at intervals, a plurality of explosion points are arranged at intervals on the tunnel to be constructed, the explosion points are ignited to enable the receiver to collect earthquake-resistant data, hydrographic data, topographic data, landform data, temperature, humidity, earthquake-resistant data and other geological data are collected, the geological data are analyzed to specify a construction scheme, the geological data and design data of the area of the tunnel to be constructed are paired, when the surrounding rock strength data in the geological data are lower than the design surrounding rock strength data, an outer support is constructed in the area of the tunnel to be constructed, and when the surrounding rock strength data in the geological data are higher than the design surrounding rock strength data, tunnel excavation is directly carried out;
dividing a tunnel to be constructed into a plurality of unit sections;
excavating earthwork of a first unit section, constructing to form a supporting layer, arranging a plurality of sampling points on the inner wall of the supporting layer at intervals, correspondingly arranging detectors on the sampling points to acquire strength data and pressure value data of the supporting layer of the first unit section, and constructing to form an inverted arch and a second lining on the inner wall of the supporting layer when the pressure value data reaches a set pressure value and is within a set range within a certain time after the strength data of the supporting layer reaches the standard;
mounting a scanner of the three-dimensional laser scanner in a tunnel, mounting targets of the three-dimensional laser scanner in the tunnel at intervals, and scanning the tunnel by using the three-dimensional laser scanner;
generating a point cloud according to the data scanned by the three-dimensional laser scanner, carrying out registration, slice extraction and fitting on the point cloud to generate a three-dimensional model, detecting the deformation of the tunnel according to the three-dimensional model, and comparing the three-dimensional model with a standard model of the tunnel to acquire the deformation data of a first unit section;
and when the deformation data is lower than a set value, excavating earthwork of the second unit section, and repeating the operation of excavating the first unit section until all the unit sections are excavated to form the tunnel.
Although the present invention has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A construction method of a tunnel is characterized by comprising the following steps:
s1, carrying out geological survey on soil in a region of a tunnel to be constructed so as to collect geological data of the soil, and formulating a construction scheme according to the geological data;
s2, dividing the tunnel to be constructed into a plurality of unit sections;
s3, excavating earthwork of the Nth unit section, constructing to form a supporting layer, and collecting strength data of the supporting layer of the Nth unit section, wherein N =1;
s4, providing a three-dimensional laser scanner, scanning the Nth unit segment, generating a three-dimensional model, and comparing the three-dimensional model with a standard model of the tunnel to obtain deformation data of the Nth unit segment;
s5, when the strength data are higher than a set strength value and the deformation data are lower than a set deformation value, excavating earthwork of the (N + 1) th unit section, constructing to form a supporting layer, and collecting the strength data of the supporting layer of the (N + 1) th unit section;
and (3) enabling the N = N +1, and repeating S4-S5 until all unit sections are excavated to form the tunnel.
2. The method of constructing a tunnel according to claim 1, wherein the geological data of the soil body is collected by a TSP advanced geological forecast system.
3. The method of constructing a tunnel according to claim 2, wherein the geological data includes hydrological data, topographic data, temperature, humidity, seismic data, and surrounding rock strength data.
4. The method of claim 3, wherein the surrounding rock strength data is matched with design surrounding rock strength data of a region of the tunnel to be constructed, and when the surrounding rock strength data is lower than the design surrounding rock strength data, an outer support is constructed in the region of the tunnel to be constructed.
5. The tunnel construction method according to claim 3, wherein the step of collecting the seismic data further comprises:
and providing a plurality of receivers, embedding the receivers in the area of the tunnel to be constructed at intervals, arranging a plurality of detonation points in the area of the tunnel to be constructed at intervals, and detonating the detonation points so that the receivers collect the anti-seismic data.
6. The method of constructing a tunnel according to claim 3, wherein the hydrological data, topographic data and topographic data are collected by a geological radar apparatus.
7. The method of constructing a tunnel according to claim 1, wherein after forming a support layer of the nth unit segment, the method further comprises:
and collecting pressure value data of the supporting layer, and constructing to form an inverted arch and a second lining on the inner wall of the supporting layer when the pressure value data reaches a set pressure value and is within a set range within a certain time.
8. The method of constructing a tunnel according to claim 1, further comprising:
a plurality of sampling points are arranged on the inner wall of the supporting layer at intervals;
and providing a plurality of detectors, and correspondingly arranging the detectors at the sampling points so as to acquire the strength data of the supporting layer.
9. The method of claim 1, further comprising scanning the nth unit segment with the three-dimensional laser scanner to obtain a plurality of point cloud data of the inner wall of the tunnel, and generating the three-dimensional model from the point cloud data.
10. The method of constructing a tunnel according to claim 9, further comprising:
before the three-dimensional model is generated, the point cloud data is subjected to registration, slice extraction and fitting;
and after the three-dimensional model is generated, comparing the three-dimensional model with a standard model of a tunnel and extracting deformation data of the point cloud data.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210769136.3A CN115182736A (en) | 2022-06-30 | 2022-06-30 | Construction method of tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210769136.3A CN115182736A (en) | 2022-06-30 | 2022-06-30 | Construction method of tunnel |
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| CN117609773A (en) * | 2024-01-24 | 2024-02-27 | 江苏南京地质工程勘察院 | Method for identifying tension-torsion state type of flexible deformation measuring element |
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