Rock surface fracturing microwave focusing radiator

Abstract

A rock surface fracturing microwave focusing radiator comprises a standard waveguide section, an impedance matching section and a compression radiation section. The standard waveguide section is used for allowing microwaves transmitted by a microwave source to be connected and is connected with the compression radiation section through the impedance matching section which forms impedance matching between the standard waveguide section and the compression radiation section. The compression radiation section radiates the focused microwaves outwards. The standard waveguide section and the compression radiation section both adopt uniform section rectangular metal cavities, and the impedance matching section adopts a variable section rectangular metal cavity. The wide edge sizes of the standard waveguide section, the impedance matching section and the compression radiation section are matched with the wave length of the microwaves transmitted by the microwave source. The longitudinal narrow edge size of the impedance matching section is in linear transition from large to small. The large size end of the impedance matching section is connected with the standard waveguide section, and the small size end of the impedance matching section is connected with the compression radiation section. The standard waveguide section has two microwave connection structure forms, the first microwave connection structure form is that the microwaves are connected through a rectangular waveguide or annular device, and the second microwave connection structure form is that the microwaves are connected through a coaxial converter and a coaxial cable.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering and mining engineering, and in particular relates to a rock surface cracking microwave focusing radiator. Background technique [0002] At present, in geotechnical engineering and mining engineering, rock-breaking technology is always developing. In order to make rock-breaking technology more efficient and economical, researchers and related technical personnel have never stopped working hard. [0003] At this stage, the mechanical rock breaking method is the most mature, and on the basis of the mechanical rock breaking method, relevant technical personnel have also proposed the idea of ​​mechanical rock breaking with the assistance of microwaves. Because different mineral components in the rock have different absorption characteristics for microwaves, and the internal stress of each mineral due to different thermal expansion will cause intergranular fracture and transgranular fra...

AI Technical Summary

Problems solved by technology

At present, although the general-purpose pyramidal horn radiating antenna can focus and emit microwaves to a certain extent, the size of the pyramidal horn radiating antenna is relatively large, and the aperture efficiency is low, and the absorption efficiency for rocks is also low, and the energy The loss is large, and the fracturing effect on the rock surface is difficult to meet the requirements

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