Metal lens antenna microwave radiation device for hard rock tunnel excavation

Abstract

The invention discloses a metal lens antenna microwave radiation device for hard rock tunnel excavation. The metal lens antenna microwave radiation device comprises a universal mobile platform vehicle, a microwave power supply, a microwave generator, a connecting waveguide, a horn mouth antenna, a metal lens antenna, a shielding box, a laser displacement sensor, an infrared thermal imager and thelike. The microwave power supply is connected with the microwave generator through a power supply connecting wire; the microwave generator is connected with the horn mouth antenna through the connecting waveguide and the flange plate; the laser displacement sensor and the infrared thermal imager are fixed on the shielding box; the horn mouth antenna, the metal lens antenna and the shielding box are fixed on the universal mobile platform vehicle; microwaves generated by the microwave generator are focused on a tunnel face through the metal lens antenna, the position and the height of the universal mobile platform car are adjusted, and therefore the metal lens antenna microwave radiation device acts on a preset heating point on the tunnel face, and efficient and economical excavation of thehard rock tunnel is achieved.

Description

Technical field [0001] The invention belongs to the technical field of tunnel engineering, and particularly relates to a metal lens antenna microwave radiation device used for hard rock tunnel excavation. Background technique [0002] With the in-depth development and implementation of the Western Development Strategy, my country plans to build a large number of deeply buried and extra-long tunnels. In tunnel engineering, the research of rock breaking technology is one of the most important topics. The current mainstream rock breaking methods mainly include blasting and mechanical rock breaking methods. The blasting method has a large disturbance to the original rock during the construction process, and is easy to cause damage to the surrounding rocks. It has disadvantages such as low construction accuracy, uneven fragmentation, and difficulty in supporting the surrounding rock; the mechanical rock breaking method faces the compressive strength In the case of higher hard rock, m...

AI Technical Summary

Problems solved by technology

However, for the microwave focusing device proposed in this scheme, as the distance between the outlet and the rock increases, the microwave power density drops sharply

In addition, due to the uneven face of the tunnel during excavation, it is difficult for the radiator in this scheme to cling to the face of the tunnel, resulting in poor microwave radiation effect

Therefore, the device proposed in the above scheme is difficult to meet the needs of actual engineering

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