Automatic projection system for tunnel blasting contour line

Abstract

The invention relates to an automatic projection system for a tunnel blasting contour line, and aims to automatically generate and adjust the tunnel blasting contour line through combination of optical projection and an image processing technology so as to improve the blasting precision and safety in tunnel construction. The system comprises a light source module, a projection device, a real-time monitoring module and a control system. Through real-time analysis of geological conditions in a tunnel, an optimal blasting contour line is generated by using a topological algorithm, and the optimal blasting contour line is automatically projected to a tunnel face of a construction tunnel to assist constructors in accurate blasting. According to the method, the over-excavation and under-excavation phenomena in the blasting process can be remarkably reduced, the construction efficiency and safety are improved, and the method has important engineering application value.

Description

Technical Field

[0001] The invention relates to the technical field of tunnel construction, in particular to an automatic projection system for tunnel blasting contour lines. Background Art

[0002] During tunnel construction, blasting is a common excavation method. However, due to the complexity of geological conditions and uncontrollable factors in the construction environment, the blasting effect is often difficult to accurately predict, resulting in over-excavation, under-excavation and safety hazards. Traditional blasting construction relies on manual experience to formulate blasting contours, lacks real-time monitoring and dynamic adjustment mechanisms, and is difficult to ensure the accuracy and safety of construction. Summary of the invention

[0003] The purpose of the present invention is to provide a tunnel blasting contour automatic projection system, which can generate and adjust the tunnel blasting contour in real time through the combination of optical projection and image processing technology, thereby improving the accuracy and safety of construction.

[0004] To achieve the above object, the present invention proposes an automatic tunnel blasting contour line projection system, characterized in that the system includes a light source module, a projection device, a real-time monitoring module and a control system, and can generate and adjust the tunnel blasting contour line in real time.

[0005] Preferably, the automatic tunnel blasting contour line projection system is characterized in that the light source module adopts a laser light source to ensure high precision and high contrast of the projected image, and the emission power of the light source is 50mW to 500mW.

[0006] Preferably, the automatic tunnel blasting contour line projection system is characterized in that the projection device is composed of a projector and a projection lens, and the projector can adjust the projection focal length according to the input contour line data to achieve the best projection effect.

[0007] Preferably, the automatic tunnel blasting contour projection system is characterized in that the real-time monitoring module includes a laser rangefinder and a high-resolution camera to monitor the geometry and geological conditions in the tunnel in real time and generate a three-dimensional model.

[0008] Preferably, the automatic tunnel blasting contour projection system is characterized in that the control system adopts a microprocessor-based controller, calculates the optimal blasting contour through an algorithm, and performs fitting using the least squares method.

[0009] Preferably, the control system is characterized in that the algorithm is based on an objective function defined as:

[0010]

[0011] Among them, yi is the actual measured geological data, and f(xi) is written as the fitted contour function.

[0012] Preferably, the automatic tunnel blasting contour projection system is characterized in that the system can dynamically adjust the blasting contour according to the real-time monitored geological data to ensure the accuracy and safety of the blasting.

[0013] Preferably, the automatic tunnel blasting contour line projection system is characterized in that the system adopts data fusion technology to comprehensively analyze data from different sensors to improve the accuracy and reliability of contour line generation.

[0014] Preferably, the automatic tunnel blasting contour projection system is characterized in that the update frequency of the projection image is 1 Hz to 10 Hz to ensure real-time performance and accuracy during the construction process.

[0015] Preferably, the automatic tunnel blasting contour projection system is characterized in that the controller of the system can transmit real-time data and projection results to a remote monitoring center via a wireless network, thereby realizing remote management of the construction site.

[0016] The beneficial effects of the present invention based on its technical solution are:

[0017] 1. The present invention can realize accurate projection of tunnel blasting contour line, thus improving the accuracy and safety of blasting;

[0018] 2. The dynamic adjustment capability enables the system to adapt to a variety of complex geological conditions, reducing over-excavation and under-excavation during construction;

[0019] 3. The application of real-time monitoring and data fusion technology improves the reliability and effectiveness of the system and can provide real-time guidance during blasting construction;

[0020] 4. The system's remote monitoring function improves the efficiency of construction management and ensures safety and standardization during the construction process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a flow chart of an automatic projection system for tunnel blasting contour lines of the present invention;

[0022] Figure 2 This is a design diagram of the light source module in the present invention;

[0023] Figure 3 This is a design diagram of the projection module in the present invention;

[0024] Figure 4 This is a design diagram of the real-time monitoring module in the present invention;

[0025] Figure 5 The design diagram of the computer integrated device in the present invention;

[0026] 1-light source; 1-1-light source rod; 1-2-signal receiver; 1-3-light source; 2-tunnel face; 3-projection device; 3-1 projection camera; 3-2-projection rod; 4-real-time monitoring module; 5-tunnel geometry; 6-blasting contour; 7-tunnel geology; 8-tunnel deformation data; 9-signal control system; 10-projection control system; 11-light source control switch; 12-projection control switch; 13-alarm device; 14-computer integrated device; DETAILED DESCRIPTION

[0027] In order to achieve the purpose of the present invention and to better understand the technical solution and effects, the embodiments of the present invention will be further described in conjunction with the accompanying drawings.

[0028] Please refer to Figure 1 , Figure 1 This is a flow chart of an automatic projection system for tunnel blasting contour lines of the present invention;

[0029] In order to achieve the above objectives,

[0030] The present invention provides a tunnel blasting contour automatic projection system, which can generate and adjust the tunnel blasting contour in real time through the combination of optical projection and image processing technology, thereby improving the accuracy and safety of construction. Figure 2 , 1-light source; 1-1-light source rod; 1-2-signal receiver; 1-3-light source;

[0031] The present invention proposes an automatic projection system for tunnel blasting contours, characterized in that the system comprises a light source module, a projection device, a real-time monitoring module and a control system, and can generate and adjust tunnel blasting contours in real time. Figure 3 , 3-projection device; 3-1 projection camera; 3-2-projection rod;

[0032] The automatic tunnel blasting contour line projection system is characterized in that the light source module adopts a laser light source to ensure high precision and high contrast of the projected image, and the emission power of the light source is 50mW to 500mW.

[0033] The automatic tunnel blasting contour line projection system is characterized in that the projection device is composed of a projector and a projection lens, and the projector can adjust the projection focal length according to the input contour line data to achieve the best projection effect. Figure 4 , 4-real-time monitoring module; 5-tunnel geometry; 6-blasting contour; 7-tunnel geology; 8-tunnel deformation data;

[0034] The automatic projection system for tunnel blasting contours is characterized in that the real-time monitoring module includes a laser rangefinder and a high-resolution camera to monitor the geometry and geological conditions in the tunnel in real time and generate a three-dimensional model. Figure 5 , 9-signal control system; 10-projection control system; 11-light source control switch; 12-projection control switch; 13-alarm device; 14-computer integrated device;

[0035] The automatic tunnel blasting contour projection system is characterized in that the control system adopts a microprocessor-based controller, calculates the optimal blasting contour through an algorithm, and uses the least squares method to perform fitting.

[0036] The control system is characterized in that the algorithm is defined based on the objective function as:

[0037]

[0038] Among them, yi is the actual measured geological data, and f(xi) is written as the fitted contour function.

[0039] The automatic tunnel blasting contour projection system is characterized in that the system can dynamically adjust the blasting contour according to the real-time monitored geological data to ensure the accuracy and safety of the blasting.

[0040] The automatic tunnel blasting contour line projection system is characterized in that the system adopts data fusion technology to comprehensively analyze data from different sensors to improve the accuracy and reliability of contour line generation.

[0041] The automatic tunnel blasting contour line projection system is characterized in that the update frequency of the projection image is 1 Hz to 10 Hz to ensure real-time performance and accuracy during the construction process.

[0042] The automatic tunnel blasting contour line projection system is characterized in that the controller of the system can transmit real-time data and projection results to a remote monitoring center via a wireless network, thereby realizing remote management of the construction site.

Claims

1. The present invention proposes a tunnel blasting contour automatic projection system, characterized in that: The system includes a light source module, a projection device, a real-time monitoring module and a control system, and can generate and adjust the tunnel blasting contour line in real time.

2. The automatic tunnel blasting contour projection system according to claim 1 is characterized in that: The light source module adopts a laser light source to ensure high precision and high contrast of the projected image, and the emission power of the light source is 50mW to 500mW.

3. The automatic tunnel blasting contour projection system according to claim 1, characterized in that: The projection device is composed of a projector and a projection lens. The projector can adjust the projection focal length according to the input contour line data to achieve the best projection effect.

4. The automatic tunnel blasting contour projection system according to claim 1, characterized in that: The real-time monitoring module includes a laser rangefinder and a high-resolution camera to monitor the geometry and geological conditions in the tunnel in real time and generate a three-dimensional model.

5. The automatic tunnel blasting contour projection system according to claim 1, characterized in that: The control system adopts a microprocessor-based controller, calculates the optimal blasting contour line through an algorithm, and performs fitting using the least square method.

6. The control system according to claim 5, characterized in that: The algorithm is based on the objective function defined as: Among them, yi is the actual measured geological data, and f(xi) is written as the fitted contour function.

7. The automatic tunnel blasting contour projection system according to claim 1, characterized in that: The system can dynamically adjust the blasting contour according to the real-time monitored geological data to ensure the accuracy and safety of the blasting.

8. The automatic tunnel blasting contour projection system according to claim 1, characterized in that: The system adopts data fusion technology to comprehensively analyze the data from different sensors to improve the accuracy and reliability of contour line generation.

9. The automatic tunnel blasting contour projection system according to claim 1, characterized in that: The update frequency of the projection image is 1 Hz to 10 Hz to ensure real-time and accuracy during the construction process.

10. The automatic tunnel blasting contour projection system according to claim 1, characterized in that: The controller of the system can transmit real-time data and projection results to a remote monitoring center via a wireless network, thereby realizing remote management of the construction site.

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