CN-121993039-A - Deep hard rock microwave-assisted rock breaking drilling system

Abstract

The invention discloses a deep hard rock microwave-assisted rock breaking drilling system, which relates to the technical field of rock breaking and comprises a ground control and energy supply system, a flange plate main body and a microwave generator. The system adopts a modularized design on the whole structure, and is formed by sequentially connecting a ground control and energy supply system, a microwave generator, a microwave transmission assembly, a microwave drill bit assembly and a cooling and sealing system, in the use process, microwaves output by the microwave generator are transmitted to the end part of the drill bit through the waveguide transmission assembly, so that the microwave action on a rock mass is realized, meanwhile, a mechanical drilling driving device drives the drill bit to realize conventional drilling operation, so that a cooperative rock breaking mode of microwave presplitting and mechanical breaking is formed, the microwave transmission assembly in the system is arranged in a drill string, stable transmission is realized through a sealing protection structure, and the cooling system is used for reducing the temperature of the system and ensuring the structural safety.

Inventors

• GAO MINGZHONG
• Yang Zundong
• Yang Bengao
• ZHANG YANG
• TANG RUIFENG
• ZHOU XUEMIN
• YANG LEI
• WANG YUNLONG
• LUO CHANGYUAN
• ZHAO XIYUAN

Assignees

• 四川大学

Dates

Publication Date

20260508

Application Date

20260213

Claims (9)

1. 1. The deep hard rock microwave-assisted rock breaking and drilling system comprises a ground control and energy supply system (1), a flange plate main body (2) and a microwave generator (3), wherein the ground control and energy supply system (1) and the microwave generator (3) are connected through the flange plate main body (2); The novel microwave drilling machine is characterized in that the flange main body (2) consists of a first flange (8) and a second flange (10), one side of the microwave generator (3) is connected with a microwave transmission assembly (4), one side of the microwave transmission assembly (4) is provided with a mechanical drilling driving device (6), the outer side of the mechanical drilling driving device (6) is provided with a drill stem (5), one side of the drill stem (5) is provided with a microwave irradiation wall body (7), the outer side of the drill stem (5) is provided with a microwave drill bit assembly (24), and the outer side of the microwave drill bit assembly (24) is provided with a cooling and sealing device (23).
2. 2. The deep hard rock microwave-assisted rock breaking drilling system according to claim 1, wherein positioning blocks (22) are uniformly fixed at the bottom end of the first flange plate (8), positioning grooves (21) are uniformly formed in the top end of the second flange plate (10), and the positioning grooves (21) are connected with the positioning blocks (22).
3. 3. The deep hard rock microwave-assisted rock breaking drilling system according to claim 2, wherein slots (14) are formed in the outer side of the positioning block (22), a chassis (15) is fixed on the outer side of the microwave generator (3), a locking seat (9) is uniformly and slidably connected to the top end of the chassis (15), locking blocks (11) are fixed on the inner side of the locking seat (9), locking grooves (12) are uniformly formed in the outer side of the flange plate main body (2), the locking grooves (12) are connected with the locking blocks (11), movable rods (16) are hinged to the inner side of the locking seat (9), a rotary table (17) is connected to the top end of the chassis (15), a driving motor (20) is fixed to the inner side of the microwave generator (3), a gear (19) is fixed on the outer side of an output shaft of the driving motor (20), a gear ring (18) is fixed on the inner side of the rotary table (17), the gear ring (18) is meshed with the gear (19), and bolts (13) are fixed on the inner side of the locking seat (9).
4. 4. The deep hard rock microwave-assisted rock breaking and drilling system according to claim 3, wherein guide blocks are fixed on two sides of the bottom end of the rotary table (17), guide grooves are formed in the top end of the chassis (15), and the guide grooves are connected with the guide blocks.
5. 5. The deep hard rock microwave-assisted rock breaking drilling system according to claim 3, wherein locking blocks (11) are fixed on the inner side of the locking seat (9), locking grooves (12) are uniformly formed in the outer side of the flange plate main body (2), and the locking grooves (12) are connected with the locking blocks (11).
6. 6. The deep hard rock microwave-assisted rock breaking drilling system according to claim 5, wherein the width of the locking block (11) is matched with the width of the locking groove (12), and the cross sections of the locking block (11) and the locking groove (12) are arranged to be convex.
7. 7. The deep hard rock microwave-assisted rock breaking drilling system according to claim 3, wherein sliding rails are uniformly fixed at the top end of the chassis (15), and sliding grooves matched with the sliding rails are formed in the bottom end of the locking seat (9).
8. 8. A deep hard rock microwave-assisted rock breaking drilling system according to claim 3, wherein the locking seats (9) are arranged in four groups, and the locking seats (9) are distributed at the top end of the chassis (15) in a cross-shaped arrangement.
9. 9. A deep hard rock microwave-assisted rock breaking drilling system according to claim 1, wherein the microwave drill bit assembly (24) comprises a microwave radiating cavity and a mechanical drilling tool structure.

Description

Deep hard rock microwave-assisted rock breaking drilling system Technical Field The invention relates to the technical field of rock breaking, in particular to a deep hard rock microwave-assisted rock breaking drilling system. Background As mineral resources and oil gas resources are exploited and continuously extend to the deep part, deep hard rock strata generally have the characteristics of high strength, high elastic modulus, high compactness and the like, and the traditional mechanical rock breaking mode has low breaking efficiency, high energy consumption, serious abrasion of drilling tools and severely limits the construction efficiency of deep engineering; the common rock breaking method in the prior art comprises the modes of rotary rock breaking, hydraulic impact rock breaking, high-temperature thermal rock breaking and the like, but has the following defects that 1, the mechanical rock breaking mode depends on the mechanical contact between a drill bit and rock to realize the breaking, the drilling speed in high-strength hard rock is obviously reduced, 2, the hydraulic impact rock breaking can improve the drilling speed, but the equipment structure is complex, the number of vulnerable parts is large, the maintenance cost is high, 3, the thermal rock breaking depends on a surface heating mode, the action depth is limited, the thermal efficiency is lower, in recent years, the research proposes to utilize the internal heating expansion of the microwave action rock to generate thermal cracks, so that the compressive strength of the rock is reduced, the breaking efficiency is improved, however, the traditional microwave rock breaking technology stays at the equipment stage of a laboratory and lacks a system structural scheme which is effectively integrated with drilling engineering equipment, so that development of a microwave-assisted rock breaking drilling system suitable for deep hard rock drilling engineering is needed. Disclosure of Invention The invention aims to provide a deep hard rock microwave-assisted rock breaking drilling system, which aims to solve the problem of deep hard rock drilling in the background technology. In order to achieve the aim, the invention provides the technical scheme that the deep hard rock microwave-assisted rock breaking and drilling system comprises a ground control and energy supply system, a flange plate main body and a microwave generator, wherein the ground control and energy supply system is connected with the microwave generator through the flange plate main body; the flange main part comprises first ring flange and second ring flange, one side of microwave generator is connected with microwave transmission subassembly, and one side of microwave transmission subassembly is provided with mechanical drilling drive arrangement, and mechanical drilling drive arrangement's outside is provided with the drilling string, one side of drilling string is provided with the microwave and shines the wall body, the outside of drilling string is provided with the microwave drill bit subassembly, the outside of microwave drill bit subassembly is provided with cooling and sealing device. Furthermore, the bottom of first ring flange evenly is fixed with the locating piece, the top of second ring flange evenly is provided with the constant head tank, and the constant head tank is connected with the locating piece. Further, the outside of locating piece all is provided with the slot, microwave generator's outside is fixed with the chassis, and the even sliding connection in top on chassis has the locking seat, the inboard of locking seat all is fixed with the locking piece, the outside of ring flange main part evenly is provided with the locking groove, and the locking groove all is connected with the locking piece, the inboard of locking seat all articulates there is the movable rod, the top on chassis is connected with the carousel, and the top of carousel all articulates with the movable rod mutually, microwave generator's inside is fixed with driving motor, and driving motor's output shaft's outside is fixed with the gear, the inboard of carousel is fixed with the ring gear, and ring gear and gear engagement are connected, the inboard of locking seat all is fixed with the bolt. Further, guide blocks are fixed on two sides of the bottom end of the rotary table, guide grooves are formed in the top end of the chassis, and the guide grooves are connected with the guide blocks. Further, the inner sides of the locking seats are respectively fixed with a locking block, the outer sides of the flange plate main bodies are uniformly provided with locking grooves, and the locking grooves are respectively connected with the locking blocks. Further, the width of the locking block is matched with the width of the locking groove, and the cross sections of the locking block and the locking groove are arranged to be convex. Further, the top of chassis evenly is fixed with the slide rail, the