HIGH-POWER MICROWAVE BOREHOLE FRACTURING DEVICE FOR ENGINEERING ROCK MASS

    公开(公告)号:US20200040717A1

    公开(公告)日:2020-02-06

    申请号:US16317738

    申请日:2018-05-16

    Abstract: A high-power microwave borehole fracturing device for an engineering rock mass includes a high-power microwave generator, a high-power microwave coaxial heater, a high-power low-loss microwave coaxial transmission line, and a microwave power adaptive regulation and control system. The high-power microwave generator includes a continuous wave magnetron, a permanent magnet, a waveguide excitation chamber, a coaxial circulator, a coaxial matching load, a coaxial coupling converter, a waveguide coaxial converter, and an output waveguide. The high-power microwave coaxial heater includes a microwave transmission inner conductor, a microwave transmission outer conductor, a microwave input connector, a microwave short circuit cap, and a conductor supporting cylinder. The high-power low-loss microwave coaxial transmission line includes an input end coaxial line, middle section coaxial lines, and an output end coaxial line. The microwave power adaptive regulation and control system includes an impedance matching regulator, a microwave power controller, and a temperature sensor.

    MICROWAVE DRILL BIT CAPABLE OF ACHIEVING FRACTURING OF BOREHOLE WALL AND END OF DEEP HARD ROCK WHILE DRILLING AND USE METHOD THEREOF

    公开(公告)号:US20240376810A1

    公开(公告)日:2024-11-14

    申请号:US18260454

    申请日:2023-04-21

    Abstract: A microwave drill bit capable of achieving fracturing of a borehole wall and end of a deep hard rock while drilling and a use method thereof are provided. The microwave drill bit comprises a microwave drill bit body, wherein a support frame front plate, a metal sleeve and a water inlet ring sequentially sleeve on the microwave drill bit body, the metal sleeve is connected with a rotary drive I mounted on the support frame front plate, the microwave drill body is connected with a microwave mode converter and a microwave splitter II respectively, the microwave mode converter and the microwave splitter II are connected with a microwave splitter I by a rectangular waveguide, the microwave splitter I is sequentially connected with a microwave rotating joint, a fixed waveguide and a microwave generator, and the microwave rotating joint is connected with a rotary drive II mounted on the support frame rear plate.

    TEST SYSTEM FOR HARD ROCK BREAKING BY MICROWAVE INTELLIGENT LOADING BASED ON TRUE TRIAXIAL STRESS

    公开(公告)号:US20220412855A1

    公开(公告)日:2022-12-29

    申请号:US17618378

    申请日:2020-12-08

    Abstract: Provided is a test system for hard rock breaking by a microwave intelligent loading based on true triaxial stress, including: a true triaxial stress loading device consisting of a loading frame and a rock sample moving structure; a microwave-induced hard rock breaking device consisting of an excitation cavity, a rectangular waveguide, a magnetron, a thermocouple, a circulator, a cold water circulation device, a flowmeter, a power meter, an automatic impedance tuner, a coupler, a microwave heater and a shielding cavity; and a dynamic rock response monitoring and intelligent microwave parameter control system consisting of a CCD industrial camera, a temperature acquisition device and an anti-electromagnetic high-temperature resistant acoustic wave-acoustic emission integrated sensor. According to the test system, the microwave-induced hard rock breaking test, dynamic monitoring temperature and rock breaking in microwave-induced breaking process and intelligent control over microwave power and heating time are achieved.

    MECHANICAL CONTINUOUS MINING DEVICE INTEGRATING MICROWAVES AND CUTTER HEADS, AND USE METHOD

    公开(公告)号:US20240392683A1

    公开(公告)日:2024-11-28

    申请号:US18259760

    申请日:2023-05-18

    Abstract: A mechanical continuous mining device integrating microwaves and cutter heads, and a use method are provided. The mechanical continuous mining device comprises an equipment platform, a cutter head cutting system, a microwave fracturing system, a loading device and a cantilever crane. The microwave fracturing system and the cutter head cutting system are fixed to the equipment platform, and the loading device and the cantilever crane are mounted at a front end of the equipment platform. A microwave mechanical longwall mining method for a metallic ore is provided. Microwaves move in sync with machines to break a rock, microwave fracturing methods comprise high-power microwave integral fracturing and local rapid fracturing of soft microwave coaxial lines in the cutter heads; and a lateral cutting method of an ore body by a cutter head technology is applied, a mechanical rock breaking principle is changed from previous extrusion breaking to tension breaking.

    MICROWAVE PLASMA ADAPTIVE ROCK BREAKING DEVICE FOR MICROWAVE-INSENSITIVE ROCKS AND METHOD FOR USING THE SAME

    公开(公告)号:US20230145203A1

    公开(公告)日:2023-05-11

    申请号:US17919439

    申请日:2021-11-18

    CPC classification number: E21C37/16 H05B6/80 H05B2206/044

    Abstract: The invention provides a microwave plasma adaptive rock breaking device for microwave-insensitive rocks and a using method thereof, and relates to the technical field of rock breaking. The microwave plasma adaptive rock breaking device comprises a microwave system, a microwave plasma conversion system and a cutter head system. The microwave system and the microwave plasma conversion system are mounted in the cutter head system, and the microwave system is connected with the microwave plasma conversion system. Under the premise that only a microwave source is used to supply energy, the combined action of ordinary microwave irradiation and plasma irradiation in the form of high-temperature flame is realized, and a full-section hard rock tunnel boring machine is in cooperation for breaking rocks, so that the problem of microwave-induced cracks of the microwave-insensitive rocks is solved, and the application scope of a microwave rock breaking technology is enlarged.

Patent Agency Ranking