A kind of femtosecond laser knife and diamond knife combined mining drill bit and mining method thereof
A technology of femtosecond laser and diamond knife, which is applied in ground mining, underground mining, special mining, etc. It can solve the problems that the field of drilling and mining engineering has not been widely used, the cost is high, and the heat-affected area of femtosecond laser positioning accuracy is small. , to achieve the effect of reducing mining cost, reducing ore strength, and good rock breaking effect
Active Publication Date: 2021-05-25
北京明睿光谱科技有限公司
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Problems solved by technology
Different from ordinary lasers, the femtosecond laser produced by it has the characteristics of high peak power, high positioning accuracy, and small heat-affected area. It is mainly used in medical technology and precision processing and other fields, and has not been widely used in drilling and mining engineering fields.
However, countries around the world have carried out research in this area. The US Phillipse Company used MIRACL lasers to conduct drilling tests. The laser beam can penetrate a 60mm thick sandstone-shale-sandstone interlayer within 1 second, and its penetration speed is higher than that of conventional drilling. Hundreds of times more expensive
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Embodiment Construction
[0032] The present invention will be further elaborated below through specific embodiments in conjunction with the accompanying drawings.
[0033] like figure 1As shown, the composite mining drill bit of femtosecond laser knife and diamond knife in this embodiment includes: drill rod 1, drill bit 2, drilling fluid channel 14, femtosecond laser channel, high-pressure air flow channel 3, femtosecond laser output hole 12, control cable 4. Anti-shock layer 5, femtosecond laser 6, transmission optical cable 7, laser probe 9, electric adjustment frame 10, light-through window 11, protective shutter 13 and ground control host; wherein, the bottom end of the drill pipe 1 is connected as a whole Drill bit 2; three drilling fluid passages 14 distributed symmetrically about the center axis are opened in the integrated drill pipe 1 and drill bit 2, and the top surface of the drill pipe 1 and the bottom surface of the drill bit 2 are opened, and the drilling fluid passages 14 are parallel ...
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Abstract
The invention discloses a mining drill combined with a femtosecond laser knife and a diamond knife and a mining method thereof. The invention assists the laser rock-breaking means on the rigid mechanical rock-breaking means of the traditional diamond bit, and focuses the femtosecond laser on the front of the drill bit. Auxiliary cutting rock breaking greatly reduces the strength of ore, reduces the loss of diamond bits and improves mining efficiency, and further reduces mining costs; and is equipped with laser probes and electric adjustment frames, which are uniformly controlled by the control system. The focal length is variable, collaborative focus, Coaxial focusing, to a large extent, adapts to the mining needs of various occasions; at the same time, the femtosecond laser is used, and the peak power is dozens of orders of magnitude higher than that of the ordinary continuous femtosecond laser. Power lasers not only reduce mining costs, but also improve the efficiency of laser rock breaking.
Description
technical field [0001] The invention belongs to the field of mining devices, and in particular relates to a mining drill combined with a femtosecond laser knife and a diamond knife and a mining method thereof. Background technique [0002] Drilling is essential in stone exploration, mine mining and other projects, and diamond drill bits are widely used in drilling bits at this stage. The traditional diamond drill bit is greatly affected by the rock formation, and the wear is serious when operating in the rock formation with a large stiffness coefficient, and the drill bit is easily damaged. For this reason, people have developed a water jet diamond drill bit, which improves the efficiency of mining, but water jet mining needs to pressurize the entire circulation system, which may cause unimaginable dangers to the operation. At the same time, under the condition of high confining pressure in deep wells, the hydrodynamic pressure drops sharply and the energy utilization rate ...
Claims
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IPC IPC(8): E21C41/16E21C27/20E21B7/14E21B21/14
CPCE21B7/14E21B21/14E21C27/20E21C41/16
Inventor 李汉明曹强
Owner 北京明睿光谱科技有限公司