阅读说明：本技术 一种隧道立体重建成像方法、系统及其应用 (Tunnel stereo reconstruction imaging method, system and application thereof ) 是由 王薇 张春武 王晓勇 李小平 张瑞杰 于 2020-12-23 设计创作，主要内容包括：本发明公开了一种隧道立体重建成像方法、系统及其应用,利用精准的高频电磁波,对隧道主体结构上划分的每个检测单元区进行高精度、多断面扫描,将采集到的电磁波信号转换为数字信号,利用计算机将数字信号生成数字矩阵,形成立体图像,能够更加直观准确的判断隧道结构的质量,具有扫描时间快、方便迅速、高密度分辨力、图像清晰、立体直观、可生成高精度的各个方位剖切面等特点；可用于在建隧道施工质量评估、已运营隧道立体无损检测、隧道的建筑信息模型获取,能大大提高检测工作的准确度和效率、降低检测作业风险,检测后重建成的立体图像具有直观可视、判识难度低的优点,为交通基础设施的工程质量、运营安全提供重要保障。(The invention discloses a tunnel three-dimensional reconstruction imaging method, a system and application thereof.A high-precision and multi-section scanning is carried out on each detection unit area divided on a tunnel main body structure by utilizing precise high-frequency electromagnetic waves, an acquired electromagnetic wave signal is converted into a digital signal, the digital signal is generated into a digital matrix by utilizing a computer to form a three-dimensional image, the quality of the tunnel structure can be judged more intuitively and accurately, and the tunnel three-dimensional reconstruction imaging method has the characteristics of quick scanning time, convenience and rapidness, high density resolution, clear image, three-dimensional intuition, capability of generating high-precision cutting planes in all directions and the like; the method can be used for tunnel construction quality assessment under construction, operated tunnel three-dimensional nondestructive testing and tunnel building information model acquisition, can greatly improve the accuracy and efficiency of detection work and reduce the detection operation risk, and the three-dimensional image reconstructed after detection has the advantages of intuition, visibility and low judgment difficulty, and provides important guarantee for the engineering quality and operation safety of traffic infrastructure.)

1. A tunnel stereo reconstruction imaging method is characterized in that,

dividing the inner surface of a detected tunnel structure (10) into a plurality of detection unit areas (11);

utilizing a plurality of data collectors (31), wherein each data collector (31) performs electromagnetic wave scanning for each corresponding detection unit area (11);

converting the collected electromagnetic wave signals into digital signals through a computer processing and analyzing system (41) and storing the digital signals as data, forming a unique unit data for each detection unit area (11), and establishing a digital matrix by the computer processing and analyzing system (41) according to the unit data of all the detection unit areas (11) to form a three-dimensional image of the tunnel structure (10).

2. The tunnel stereo reconstruction imaging method according to claim 1, characterized in that the detection cell area (11) is provided to the inner surface of the tunnel structure (10) with grid lines divided into several rectangles.

3. The tunnel stereo reconstruction imaging method according to claim 2, wherein the scanning object corresponding to each data collector (31) is a column of the detection unit regions (11) along the tunnel axial direction.

4. The tunnel stereo reconstruction imaging method according to any one of claims 1 to 3, wherein the computer processing analysis system (41) outputs the stereo image to a display terminal (52), and the display terminal (52) displays the stereo image.

5. A system using the tunnel stereo reconstruction imaging method of any one of claims 1 to 4, it is characterized by comprising a circumferential scanning platform (21) and a transverse scanning platform (22) connected with the bottom of the circumferential scanning platform, the annular scanning platform (21) and the transverse scanning platform (22) are matched with the shape of the inner wall of the tunnel, and is connected with a system base (23), the system base (23) is provided with a system travelling wheel (27), the system traveling wheel (27) is used for moving along the axial direction of the tunnel, the annular scanning platform (21) is provided with an annular moving slideway (25), a transverse moving slideway (26) is arranged on the transverse scanning platform (22), a plurality of data collectors (31) are respectively arranged on the annular moving slideway (25) and the transverse moving slideway (26), the data collector (31) can move along the circular moving slide way (25) or the transverse moving slide way (26).

6. The tunnel stereo reconstruction imaging system according to claim 5, characterized in that a longitudinal moving slideway (24) is arranged on the system base (23) along the tunnel axial direction, and the annular scanning platform (21) and the transverse scanning platform (22) can move along the longitudinal moving slideway (24).

7. The tunnel stereo reconstruction imaging system according to claim 5, wherein a general control system (51), a display terminal (52) and at least one computer processing and analyzing system (41) are arranged on the circumferential scanning platform (21) and/or the transverse scanning platform (22), the general control system (51) is used for controlling the movement of each data collector (31), the scanning of the data collector (31) and the movement of the system road wheel (27), and the display terminal (52) displays the stereo image.

8. The tunnel stereo reconstruction imaging system according to claim 7, wherein one of the computer processing and analyzing systems (41) is connected with a plurality of the data collectors (31) through a data transmission line (32), or one of the computer processing and analyzing systems (41) is connected with a plurality of the data collectors (31) through wireless communication.

9. The tunnel stereo reconstruction imaging system according to any one of claims 5 to 8, wherein at least two sets of the circumferential scanning platform (21) and the transverse scanning platform (22) are arranged on the system base (23), and the data collectors (31) on the circumferential scanning platform (21) and the transverse scanning platform (22) are arranged in a staggered manner.

10. Use of the tunnel stereo reconstruction imaging method according to any one of claims 1 to 4 or the tunnel stereo reconstruction imaging system according to any one of claims 5 to 9 for construction quality of tunnels, nondestructive inspection of operated tunnels, and acquisition of a building information model of tunnels.

Technical Field

The invention relates to the field of traffic infrastructure detection, in particular to a tunnel three-dimensional reconstruction imaging method and system and application thereof.

Background

At present, the domestic traffic infrastructure is adjusted from high-speed development to high-quality development, and the engineering quality and the operation safety attention degree of traffic infrastructure in the industry are greatly improved, so that the detection of the tunnel structure and the rock-soil characteristics behind the tunnel structure is an important work.

The existing universal tunnel nondestructive testing mode is that an electromagnetic wave scanner is used for advancing along the axial direction of a tunnel, and then scanning is carried out to obtain two-dimensional section data along the axial direction of the tunnel, the scanning is carried out for five times or seven times, the scanning position comprises a tunnel vault and a side wall, namely, five or seven two-dimensional section data along the axial direction of the tunnel are obtained by scanning, the quality of a tunnel structure is analyzed by integrating the two-dimensional section data, the mode of utilizing two-dimensional data to collect and analyze is used for detecting the tunnel, the operation is inconvenient, the working efficiency is low, the detection effect is poor, the safety risk is large, and the line traffic is greatly influenced. Therefore, an application of the tunnel nondestructive testing by using the tunnel stereo reconstruction imaging method and system is necessary.

Disclosure of Invention

The invention aims to: the tunnel three-dimensional reconstruction imaging method, the tunnel three-dimensional reconstruction imaging system and the application thereof are provided for solving the problems that in the prior art, the tunnel is detected by a two-dimensional data acquisition and analysis mode, the operation is inconvenient, the working efficiency is low, the detection effect is poor, the safety risk is high, and the line traffic is greatly influenced.

In order to achieve the purpose, the invention adopts the technical scheme that:

a tunnel three-dimensional reconstruction imaging method,

dividing the inner surface of a detected tunnel structure into a plurality of detection unit areas;

utilizing a plurality of data collectors, wherein each data collector is used for carrying out electromagnetic wave scanning on each corresponding detection unit area;

the acquired electromagnetic wave signals are converted into digital signals through a computer processing and analyzing system and stored as data, unique unit data are formed for each detection unit area, and the computer processing and analyzing system establishes a digital matrix according to the unit data of all the detection unit areas to form a three-dimensional image of the tunnel structure.

By adopting the tunnel three-dimensional reconstruction imaging method, each detection unit area divided on the tunnel main body structure is scanned with high precision and multiple sections by using accurate high-frequency electromagnetic waves, the acquired electromagnetic wave signals are converted into digital signals, and the digital signals are generated into digital matrixes by using a computer to form three-dimensional images, so that the quality of the tunnel structure can be judged more intuitively and accurately, and the tunnel three-dimensional reconstruction imaging method has the characteristics of quick scanning time, convenience and rapidness, high density resolution, clear images, three-dimensional intuition, capability of generating high-precision section planes in various directions and the like; the method can be used for tunnel construction quality assessment under construction, operated tunnel three-dimensional nondestructive detection and tunnel building information model acquisition, can greatly improve the accuracy and efficiency of detection work and reduce the detection operation risk, and the three-dimensional image reconstructed after detection has the advantages of intuition, visibility and low judgment difficulty, and provides important guarantee for the engineering quality and operation safety of traffic infrastructure; the method has simple steps, convenient operation and good effect.

Preferably, the inner surface of the tunnel structure is provided with the detection unit area which is divided into a plurality of rectangles by grid lines.

By adopting the method, the inner surface of the tunnel structure is partitioned by utilizing the simplest grid partition mode, so that the data acquisition unit is favorable for conveniently scanning the detection unit area of each rectangle on one hand, and the computer processing and analyzing system is favorable for quickly establishing a digital matrix on the other hand.

Further preferably, the scanning object corresponding to each data acquisition device is a column of the detection unit regions along the axial direction of the tunnel.

In this way, each data collector can scan each detection unit area in a column of detection unit areas while moving along the axial direction of the tunnel, and a plurality of data collectors do not need to be arranged for the column of detection unit areas, so that the construction of a tunnel stereoscopic reconstruction imaging system is facilitated, and the cost is saved.

Preferably, the computer processing and analyzing system outputs the stereoscopic image to a display terminal, and the display terminal displays the stereoscopic image.

The invention also provides a system adopting the tunnel three-dimensional reconstruction imaging method, which comprises a circumferential scanning platform and a transverse scanning platform connected to the bottom of the circumferential scanning platform, wherein the circumferential scanning platform and the transverse scanning platform are matched with the shape of the inner wall of the tunnel and are connected to a system base, the system base is provided with a system travelling wheel, the system travelling wheel is used for moving along the axial direction of the tunnel, a circumferential moving slideway is arranged on the circumferential scanning platform, a transverse moving slideway is arranged on the transverse scanning platform, a plurality of data collectors are respectively arranged on the circumferential moving slideway and the transverse moving slideway, and the data collectors can move along the circumferential moving slideway or the transverse moving slideway.

By adopting the tunnel three-dimensional reconstruction imaging system, the annular direction of the detection unit area can be scanned by moving the data collector along the annular movement slideway or the transverse movement slideway, the longitudinal direction of the detection unit area is driven by moving the system travelling wheel along the axial direction of the tunnel, namely, the surface area of the whole detection unit area is scanned by the data collector along the annular direction and the longitudinal direction, the thickness area of the detection unit area is detected by the electromagnetic wave sent by the data collector, the three-dimensional data form of the detection unit area is established by the surface area and the thickness area of the detection unit area, the three-dimensional digital matrix is established by the three-dimensional data form of the detection unit area, the three-dimensional reconstruction imaging can be carried out on the main body structure of the tunnel, the whole tunnel can be scanned by moving the system travelling wheel along the tunnel once, repeated back-and-forth scanning is not needed, the detection effect is good, the tunnel structure can be visually known, and the smooth circuit is ensured; the system has the advantages of simple structure, convenient use, good effect, novel form, high intelligent degree, safety and reliability, and can provide guarantee for the tunnel construction quality control and the regular maintenance in the operation stage.

Preferably, a longitudinal moving slideway is arranged on the system base along the axial direction of the tunnel, and the annular scanning platform and the transverse scanning platform can move along the longitudinal moving slideway.

By adopting the structure, the detected tunnel can be divided into a plurality of sections according to the length of the longitudinal moving slideway, the system walking wheel drives the tunnel three-dimensional reconstruction imaging system to move to one section, the data acquisition unit moves along the annular moving slideway or the transverse moving slideway to scan the annular direction of the detection unit area in the section, the annular moving slideway and the transverse moving slideway move along the longitudinal moving slideway to scan the longitudinal direction of the detection unit area in the section, and after the scanning of the section is completed, the system walking wheel drives the tunnel three-dimensional reconstruction imaging system to move to the next section, so that the tunnel three-dimensional reconstruction imaging system can move rapidly in the tunnel through the system walking wheel and can perform longitudinal scanning slowly through the longitudinal moving slideway, and the scanning precision is ensured.

Preferably, the annular scanning platform and/or the transverse scanning platform are/is provided with a master control system, a display terminal and at least one computer processing and analyzing system, the master control system is connected with the computer processing and analyzing system and the display terminal, the master control system is used for controlling the movement of the data acquisition units, the scanning of the data acquisition units and the movement of the system travelling wheels, and the display terminal displays the three-dimensional image.

Further preferably, each data collector comprises a driving trolley, and the driving trolley is slidably connected to the annular moving slideway or the transverse moving slideway.

Further preferably, one computer processing and analyzing system is connected with a plurality of data collectors through data transmission lines, or one computer processing and analyzing system is connected with a plurality of data collectors through wireless communication.

Preferably, at least two sets of the annular scanning platform and the transverse scanning platform are arranged on the system base, and the data acquisition devices on the annular scanning platform and the transverse scanning platform are arranged in a staggered manner.

By adopting the structure, the data collectors arranged on different annular scanning platforms and transverse scanning platforms can be arranged in a staggered manner to accurately scan the divided detection unit areas with smaller areas, namely, the data collectors on the former annular scanning platform and the transverse scanning platform scan two detection unit areas at two sides in the three adjacent detection unit areas in rows, the data collectors on the latter annular scanning platform and the transverse scanning platform scan the detection unit areas positioned in the middle in the three adjacent detection unit areas in rows, and then the digital matrix is spliced and constructed by the computer processing and analyzing system, so that the scanning precision and speed can be greatly improved, and the quality of the formed tunnel three-dimensional image is higher.

The invention also provides an application of the tunnel three-dimensional reconstruction imaging method or the tunnel three-dimensional reconstruction imaging system in tunnel construction quality establishment, operated tunnel nondestructive testing and acquisition of a Building Information Model (BIM) of a tunnel.

In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:

1. according to the tunnel three-dimensional reconstruction imaging method, accurate high-frequency electromagnetic waves are utilized to perform high-precision multi-section scanning on each detection unit area divided on a tunnel main body structure, collected electromagnetic wave signals are converted into digital signals, the digital signals are generated into digital matrixes by a computer to form three-dimensional images, the quality of the tunnel structure can be judged more visually and accurately, and the tunnel three-dimensional reconstruction imaging method has the characteristics of being fast in scanning time, convenient and rapid, high in density resolution, clear in images, three-dimensional and visual, capable of generating high-precision section planes in all directions and the like; the method can be used for tunnel construction quality assessment under construction, operated tunnel three-dimensional nondestructive detection and tunnel building information model acquisition, can greatly improve the accuracy and efficiency of detection work and reduce the detection operation risk, and the three-dimensional image reconstructed after detection has the advantages of intuition, visibility and low judgment difficulty, and provides important guarantee for the engineering quality and operation safety of traffic infrastructure; the method has simple steps, convenient operation and good effect;

2. the invention relates to a tunnel three-dimensional reconstruction imaging system, which can scan the ring direction of a detection unit area by using a data collector to move along a ring direction moving slideway or a transverse moving slideway, can drive the data collector to scan the longitudinal direction of the detection unit area by using a system travelling wheel to move along the axial direction of a tunnel, namely, can scan the surface area of the whole detection unit area along the ring direction and the longitudinal direction by using the data collector, can detect the thickness area of the detection unit area by using electromagnetic waves sent by the data collector, can establish the three-dimensional data form of the detection unit area by using the surface area and the thickness area of the detection unit area, can carry out three-dimensional reconstruction imaging on the main body structure of the tunnel by establishing a three-dimensional digital matrix by using the three-dimensional data form of the detection unit area, can scan the whole tunnel by using the system travelling wheel to walk along the, The detection effect is good, the tunnel structure can be visually known, and the smooth circuit is ensured; the system has the advantages of simple structure, convenient use, good effect, novel form, high intelligent degree, safety and reliability, and can provide guarantee for the tunnel construction quality control and the regular maintenance in the operation stage.

Drawings

Fig. 1 is a schematic front view of a stereoscopic tunnel reconstruction imaging system according to the present invention;

fig. 2 is a schematic side view of a tunnel stereo reconstruction imaging system according to the present invention.

The labels in the figure are: 10-a tunnel structure, 11-a detection unit area, 21-a circumferential scanning platform, 22-a transverse scanning platform, 23-a system base, 24-a longitudinal moving slideway, 25-a circumferential moving slideway, 26-a transverse moving slideway, 27-a system traveling wheel, 31-a data collector, 32-a data transmission line, 41-a computer processing and analyzing system, 51-a master control system and 52-a display terminal.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings.

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example 1

The invention relates to a tunnel three-dimensional reconstruction imaging method, which comprises the following steps:

dividing virtual grid lines arranged on the inner surface of a detected tunnel structure 10 into a plurality of rectangular detection unit areas 11;

utilizing a plurality of data collectors 31, wherein each data collector 31 performs electromagnetic wave scanning on each corresponding detection unit region 11, specifically, a scanning object corresponding to each data collector 31 is a column of detection unit regions 11 along the axial direction of the tunnel;

converting the collected electromagnetic wave signals into digital signals and storing the digital signals as data through the computer processing and analyzing system 41, forming a unique unit data for each detection unit area 11, wherein the computer processing and analyzing system 41 can call the stored unit data of all the detection unit areas 11 at any time to establish a digital matrix to form a three-dimensional image of the tunnel structure 10;

the computer processing and analyzing system 41 outputs the stereoscopic image to the display terminal 52, and the display terminal 52 displays the stereoscopic image.

According to the tunnel three-dimensional reconstruction imaging method, accurate high-frequency electromagnetic waves are utilized to perform high-precision multi-section scanning on each detection unit area 11 divided on a tunnel main body structure, collected electromagnetic wave signals are converted into digital signals, the digital signals are generated into digital matrixes by a computer to form three-dimensional images, the quality of the tunnel structure 10 can be judged more visually and accurately, and the tunnel three-dimensional reconstruction imaging method has the characteristics of being fast in scanning time, convenient and fast, high in density resolution, clear in images, three-dimensional, visual, capable of generating high-precision cross-section planes in all directions and the like; partitioning the inner surface of the tunnel structure 10 by using the simplest grid partitioning mode is beneficial to the data acquisition unit 31 to conveniently scan the detection unit region 11 of each rectangle on one hand, and is beneficial to the computer processing and analyzing system 41 to quickly establish a digital matrix on the other hand; meanwhile, each data collector 31 can scan each detection unit area 11 in a column of detection unit areas 11 while moving along the axial direction of the tunnel, and a plurality of data collectors 31 are not required to be arranged for the column of detection unit areas 11, so that the construction of a tunnel stereoscopic reconstruction imaging system is facilitated, and the cost is saved.

The tunnel three-dimensional reconstruction imaging method can be used for tunnel construction quality assessment under construction, operated tunnel three-dimensional nondestructive detection and tunnel building information model acquisition, can greatly improve the accuracy and efficiency of detection work and reduce the detection operation risk, and a reconstructed three-dimensional image after detection has the advantages of intuition, visibility and low judgment difficulty, and provides important guarantee for the engineering quality and the operation safety of traffic infrastructure; the method has simple steps, convenient operation and good effect.

Example 2

As shown in fig. 1 and 2, a system using the tunnel stereo reconstruction imaging method according to embodiment 1 includes a system base 23, a circumferential scanning platform 21, and a transverse scanning platform 22.

Horizontal scanning platform 22 connect in hoop scanning platform 21 bottom, hoop scanning platform 21 with horizontal scanning platform 22 adaptation tunnel inner wall shape, be equipped with longitudinal movement slide 24 along the tunnel axial on the system base 23, hoop scanning platform 21 with horizontal scanning platform 22 can follow longitudinal movement slide 24 removes.

The system base 23 is provided with a system travelling wheel 27, the system travelling wheel 27 is used for moving along the axial direction of the tunnel, the annular scanning platform 21 is provided with an annular moving slideway 25, the transverse scanning platform 22 is provided with a transverse moving slideway 26, the annular moving slideway 25 and the transverse moving slideway 26 are respectively provided with a plurality of data collectors 31, each data collector 31 comprises a driving trolley, and the driving trolley is connected with the annular moving slideway 25 or the transverse moving slideway 26 in a sliding manner; each data collector 31 can walk on the circular moving slideway 25 or the transverse moving slideway 26 according to a predetermined path and collect data, and the circular scanning platform 21 at the upper part and the transverse scanning platform 22 at the bottom can longitudinally walk in a predetermined walking manner through the longitudinal moving slideway 24 on the system base 23, thereby driving the data collectors 31 distributed on the circular scanning platform 21 at the upper part and the transverse scanning platform 22 at the bottom to perform longitudinal data collection.

A general control system 51, a display terminal 52 and at least one computer processing and analyzing system 41 are arranged on the circumferential scanning platform 21 and/or the transverse scanning platform 22, the general control system 51 is connected with the computer processing and analyzing system 41 and the display terminal 52, the general control system 51 is used for controlling the movement of each data collector 31, the scanning of the data collector 31 and the movement of the system road wheels 27, all working steps of the tunnel stereo reconstruction imaging system are controlled by the general control system 51, the general control system 51 can be visually operated on the display terminal 52, the display terminal 52 displays the stereo images, one computer processing and analyzing system 41 is connected with a plurality of data collectors 31 through data transmission lines 32, or one computer processing and analyzing system 41 is connected with a plurality of data collectors 31 through wireless communication.

At least two sets of the annular scanning platform 21 and the transverse scanning platform 22 are arranged on the system base 23, and the data acquisition units 31 on the annular scanning platform 21 and the transverse scanning platform 22 are arranged in a staggered manner; by adopting the structure, the divided detection unit areas 11 with smaller areas can be accurately scanned by the data collectors 31 arranged on different annular scanning platforms 21 and transverse scanning platforms 22 in a staggered manner, namely, the data collectors 31 on the previous annular scanning platform 21 and the transverse scanning platform 22 scan two detection unit areas 11 on two sides in the three adjacent detection unit areas 11 in a row, the data collectors 31 on the next annular scanning platform 21 and the transverse scanning platform 22 scan the detection unit areas 11 in the middle of the three adjacent detection unit areas 11 in a row, and then the digital matrixes are constructed by splicing through the computer processing and analyzing system 41, so that the scanning precision and speed can be greatly improved, and the quality of the three-dimensional images of the formed tunnel is higher.

When the tunnel three-dimensional reconstruction imaging system is used, a detected tunnel can be divided into a plurality of sections according to the length of the longitudinal moving slideway 24, the system walking wheel 27 drives the tunnel three-dimensional reconstruction imaging system to move to one section, the data acquisition device 31 moves along the annular moving slideway 25 or the transverse moving slideway 26 to scan the annular direction of the detection unit area 11 in the section, the annular moving slideway 25 and the transverse moving slideway 26 move along the longitudinal moving slideway 24 to scan the longitudinal direction of the detection unit area 11 in the section, and after the scanning of the section is completed, the system walking wheel 27 drives the tunnel three-dimensional reconstruction imaging system to move to the next section, so that the tunnel three-dimensional reconstruction imaging system can move rapidly in the tunnel through the system walking wheel 27 and perform longitudinal scanning slowly through the longitudinal moving slideway 24, and the scanning accuracy is ensured.

The invention relates to a tunnel three-dimensional reconstruction imaging system, which can scan the annular direction of a detection unit area 11 by utilizing the movement of a data collector 31 along an annular movement slideway 25 or a transverse movement slideway 26, can scan the longitudinal direction of the detection unit area 11 by utilizing a system travelling wheel 27 to move along the axial direction of a tunnel to drive the data collector 31 to scan the longitudinal direction of the detection unit area 11, namely, the data collector 31 scans the surface area of the whole detection unit area 11 along the annular direction and the longitudinal direction, can detect the thickness area of the detection unit area 11 by utilizing electromagnetic waves emitted by the data collector 31, can establish the three-dimensional data form of the detection unit area 11 by utilizing the surface area and the thickness area of the detection unit area 11, can carry out three-dimensional reconstruction imaging on the main structure of the tunnel by establishing a three-dimensional data matrix through the detection unit area 11, can scan the whole tunnel by utilizing the system travelling wheel 27 to, the working efficiency is high, the detection effect is good, the tunnel structure 10 can be visually known, and the smooth circuit is ensured; the system has the advantages of simple structure, convenient use, good effect, novel form, high intelligent degree, safety and reliability, and can provide guarantee for the tunnel construction quality control and the regular maintenance in the operation stage.

Example 3

The tunnel stereo reconstruction imaging method or system provided by the invention can be applied to acquiring the BIM data information of the tunnel besides being applied to the construction quality of the tunnel under construction and the nondestructive detection of the operated tunnel as in embodiment 1 or embodiment 2.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.