CN112196565A - Hob-free hard rock tunneling machine for breaking rock by utilizing microwave and high-pressure air jet - Google Patents
Hob-free hard rock tunneling machine for breaking rock by utilizing microwave and high-pressure air jet Download PDFInfo
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- CN112196565A CN112196565A CN202010143590.9A CN202010143590A CN112196565A CN 112196565 A CN112196565 A CN 112196565A CN 202010143590 A CN202010143590 A CN 202010143590A CN 112196565 A CN112196565 A CN 112196565A
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- 239000011435 rock Substances 0.000 title claims abstract description 133
- 230000005641 tunneling Effects 0.000 title description 7
- 230000005855 radiation Effects 0.000 claims abstract description 35
- 230000007246 mechanism Effects 0.000 claims description 8
- 239000007788 liquid Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000007858 starting material Substances 0.000 claims description 3
- 238000009412 basement excavation Methods 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 3
- 238000010438 heat treatment Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
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- 238000010521 absorption reaction Methods 0.000 description 2
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- 230000006378 damage Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
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- 229910052751 metal Inorganic materials 0.000 description 2
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- 230000035882 stress Effects 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
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- 238000010079 rubber tapping Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/1073—Making by using boring or cutting machines applying thermal energy, e.g. by projecting flames or hot gases, by laser beams
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/1066—Making by using boring or cutting machines with fluid jets
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/1086—Drives or transmissions specially adapted therefor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
- E21D9/10—Making by using boring or cutting machines
- E21D9/1093—Devices for supporting, advancing or orientating the machine or the tool-carrier
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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Abstract
The invention discloses a hob-free hard rock heading machine for breaking rock by utilizing microwave and high-pressure air jet flow, and solves the technical problems that the existing hob-free heading machine cannot realize the heading of a hard rock stratum, and a hob head needs to be maintained when the hob head is used for heading the hard rock, so that the cost is high, and the construction period is long. The high-span central driving system comprises a high-span central driving system connected with a non-hob cutter disc, wherein a microwave emitter is arranged on the non-hob cutter disc and connected with a microwave radiation arm, a high-pressure air jet nozzle is arranged on the non-hob cutter disc, and the high-pressure air jet nozzle is connected with a high-pressure air system through a high-pressure air pipe. According to the invention, the microwave and ultrahigh pressure air jet flow coupled rock breaking system is adopted, the conventional cutter rock breaking technology is thoroughly abandoned, the excavation efficiency is improved, and the excavation cost is reduced.
Description
Technical Field
The invention relates to the technical field of fifth generation tunnel boring machines, in particular to a hob-free hard rock boring machine for breaking rock by utilizing microwave and high-pressure air jet flow.
Background
At present, tunnel excavation aims at rock stratums, and mainly aims at achieving the purpose of crushing rock masses by means of pressing rocks with a disc-shaped hob, the compressive strength of the rocks is mainly overcome, the rock crushing efficiency of the rock stratums with common strength (within 100 MPa) is still good, but in harder rock stratums, the hob rock crushing method is poor in economy. Therefore, a novel development machine and a rock breaking method are needed to be subversively invented.
Through retrieval, the prior Chinese utility model patent with the application date of 2018.12.25 and the application number of 201822184738.4 discloses a microwave-assisted rock breaking TBM cutter head for hard rock, which comprises a TBM cutter head main body, wherein the TBM cutter head main body mainly comprises a single-edge rock breaking hob, a double-edge rock breaking hob, a water spray dust removal port and a microwave-assisted rock breaking transmitter; the cutter head covers rock breaking paths with different tracks through the combined arrangement of the double-edge hob and the single-edge hob; the cutter head panel is provided with a plurality of water spraying dust removing openings; the cutter head panel is provided with a plurality of microwave rock breaking transmitters, each microwave rock breaking transmitter consists of a microwave transmitting disc, a waveguide structure and a microwave transmitting module, and when a hard rock stratum is met, a microwave transmitting device is started, the rock is rapidly heated through microwaves, the mechanical properties such as the load strength of a rock point, the uniaxial compressive strength and the tensile strength are reduced, and rock breaking by a TBM hob is assisted by a rock joint crack.
Compared with the traditional cutterhead, the microwave-assisted rock breaking TBM cutterhead for hard rock is provided with the microwave transmitting device to assist the hob in breaking rock, and can improve the tunneling performance relative to the traditional cutterhead, so that the abrasion and the hob changing times of the hob in hard rock are reduced. However, as described in the publication, the hob still has a considerable amount of wear with the advance of the excavation and rock breaking, and maintenance such as replacement of the hob is still required, so that the construction period cannot be shortened greatly and the construction investment cannot be reduced.
In addition, through the retrieval, the current application date is 2018.06.29, the chinese invention patent application that application number is CN201810699426.9 discloses a tunneller that utilizes high-pressure wind to break rock, including the tunneller host computer and with tunneller host computer complex high-pressure wind output system, the front portion of tunneller host computer is equipped with the blade disc system, evenly is equipped with a plurality of high-pressure wind generating device on the blade disc of blade disc system, high-pressure wind generating device's gas outlet and the face rock of excavation department have inclination, high-pressure wind generating device passes through pipe-line system and is connected the cooperation with high-pressure wind output system, pipe-line system mainly comprises high-pressure hose, the middle part of tunneller host computer is equipped with the actuating system of drive blade disc system, inside being equipped with of tunneller host computer with the slag tapping system of blade disc system complex, be equipped with the step-by-.
The tunneling machine for breaking rocks by using high-pressure wind only breaks rocks by using high-pressure wind, and can break rocks only by using extremely high-pressure wind, the requirement of extra-high-voltage wind on a pipeline system is extremely high, and the existing material cannot meet the requirement. Even if it is practical, the driving can be performed only by using high-pressure wind alone when it is used in a soft rock stratum. However, tunneling cannot be performed in a hard rock formation at all, and a great potential safety hazard exists.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a hob-free hard rock heading machine for breaking rock by utilizing microwave and high-pressure air jet, which solves the technical problems that the existing hob-free heading machine cannot realize the heading of a hard rock stratum, and a hob head needs to be maintained when the hob head is used for heading the hard rock, so that the cost is high and the construction period is long.
The technical scheme of the invention is realized as follows: the utility model provides an utilize no hobbing cutter hard rock entry driving machine of broken rock of microwave and high-pressure wind efflux, includes central actuating system, central actuating system is connected with no hobbing cutter blade disc through the link that the span is greater than a meter, because no hobbing cutter blade disc quality is light, and be different from traditional blade disc and utilize cutter extrusion rock on the blade disc to break the rock, consequently need not to use traditional actuating mechanism, can abandon the traditional drive mode of peripheral multiunit motor or hydraulic motor speed reducer, only adopt high-span central actuating system to drive do not have the hobbing cutter blade disc rotatory can. Because the hob-free cutterhead is driven by a high-span central driving system, the back of the hob-free cutterhead can have enough assembly space, and the back of the hob-free cutterhead is provided with a microwave emitter. The microwave emitter is connected with a microwave radiation arm which is communicated with the front side of the hob-free cutter head, microwaves generated by the microwave emitter can be transmitted to the surface of the rock through the microwave radiation arm, and the temperature of the rock is heated to be higher than 50 ℃ by utilizing different absorption characteristics of different mineral components in the rock on microwave energy. At this time, the rock is subjected to crystal fracture and transgranular fracture due to the internal stress generated by different thermal expansion of each mineral, so that the rock is damaged and microcracked, and the strength of the rock is reduced. The hob-free cutter head is provided with a high-pressure air jet nozzle, and the high-pressure air jet nozzle is connected with a high-pressure air system through a high-pressure air pipe. The high-pressure air system is started on the basis of the action of microwaves, the rock generates strong thermal stress impact under huge temperature difference to generate cracks, and the cracks are subjected to the strong impact of high-pressure air, so that the rock is stripped under the multiple actions.
Furthermore, the microwave radiation arm is retractable, and the retractable microwave radiation arm is adjusted according to the distance adaptation between no hobbing cutter blade disc and the rock, makes the microwave radiation arm closely laminate the rock section all the time, avoids too much scattering of microwave or reflects away and reduces the radiating efficiency.
Further, the microwave radiation arm comprises a microwave emission end matched with the non-hob cutter head in a splicing mode, the microwave emission end is connected with a first telescopic cylinder, one end of the first telescopic cylinder is connected with the microwave emission end, the other end of the first telescopic cylinder is connected with the non-hob cutter head, and the microwave emission end can be driven to axially stretch relative to the non-hob cutter head through stretching of the first telescopic cylinder, so that the microwave emission end is close to the rock at the front end.
Furthermore, the microwave transmitting end is made of copper or aluminum, so that microwave scattering can be effectively prevented, and the effect of concentrated energy rock breaking is achieved.
Furthermore, the high-pressure air jet nozzle is arranged around the microwave emitter, so that the microwave radiation arm and the high-pressure air jet nozzle can be matched with each other more effectively, and the optimal rock breaking effect is achieved.
Furthermore, the first telescopic cylinder is a pneumatic telescopic cylinder or a hydraulic telescopic cylinder, and the form of the first telescopic cylinder can be various as long as the first telescopic cylinder can drive the microwave transmitting end head to realize stretching.
Furthermore, a pressure sensor connected with a controller is arranged in the pneumatic telescopic cylinder or the hydraulic telescopic cylinder, and the controller is connected with an electromagnetic valve for controlling the on-off of an air inlet of the pneumatic telescopic cylinder or a liquid inlet of the hydraulic telescopic cylinder. The pressure sensor can monitor pressure in real time, and the controller can control the on-off of the electromagnetic valve in real time according to the monitored pressure so as to control the stretching state of the pneumatic stretching cylinder or the hydraulic stretching cylinder.
Further, a threshold value for controlling the pressure in the first telescopic cylinder to be constant is set in the controller. The pressure value monitored by the pressure sensor in real time is compared with a threshold value, when the pressure value monitored in real time reaches the threshold value, the controller controls the electromagnetic valve to be disconnected, the air inlet of the pneumatic telescopic cylinder or the liquid inlet of the hydraulic telescopic cylinder is closed, and the elongation of the pneumatic telescopic cylinder or the hydraulic telescopic cylinder is maintained; when the real-time monitored pressure value is smaller than the threshold value, the controller controls the electromagnetic valve to be communicated, the air inlet of the pneumatic telescopic cylinder or the liquid inlet of the hydraulic telescopic cylinder is communicated, and the pneumatic telescopic cylinder or the hydraulic telescopic cylinder extends until the pressure reaches the threshold value.
Furthermore, a protection mechanism for protecting the microwave radiation arm is arranged on the front end face of the hob-free cutter head, the protection mechanism comprises a second telescopic cylinder radially arranged in the hob-free cutter head, and the telescopic end of the second telescopic cylinder is connected with a protection plate blocked on the front side of the microwave radiation arm. The extension of second telescoping cylinder can drive guard plate radial movement, and then can shelter from the protection to the microwave radiation arm, needs to use the microwave radiation arm to carry out the during operation, and the retraction of second telescoping cylinder can drive the guard plate and remove the sheltering from to the microwave radiation arm.
Further, the second telescopic cylinder is an electric telescopic cylinder, a pneumatic telescopic cylinder or a hydraulic telescopic cylinder. The form of second telescoping cylinder can have the multiple, as long as can drive the guard plate and realize flexible can.
Furthermore, the second telescopic cylinder is connected with a controller, and the controller is connected with the second telescopic cylinder through a timer and a starter. The controller can set time to the timer according to the length of time of microwave heating, and after microwave heating for a few seconds, the second telescoping cylinder drives the automatic, instantaneous microwave radiation arm that covers of guard plate and protects, avoids broken rock fragment to bounce back and causes the injury on the microwave radiation arm.
The invention adopts a microwave and ultrahigh pressure air jet flow coupled rock breaking system, thoroughly abandons the conventional cutter rock breaking technology, solves the problem that the metal cutter of the development machine is very easy to be abnormally damaged when cutting rocks, solves the problem that the existing non-hob development machine can not realize the development of hard rock stratum, simultaneously improves the development efficiency and reduces the development cost. The invention has the structural characteristics different from the conventional shield tunneling machine, and the front panel of the tunneling machine has light weight because the rock is broken without depending on the extrusion of a hob, and the high-span central driving system is adopted to drive the hob-free cutterhead to rotate. In addition, the propulsion system does not need strong thrust to extrude rocks, and can be reduced from dozens of propulsion oil cylinders of a conventional shield to four oil cylinders, so that the purpose of pushing the front shield body to move forwards can be met.
Drawings
In order to illustrate the embodiments of the invention more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are only some embodiments of the invention, and that other drawings may be derived from those drawings by a person skilled in the art without inventive effort.
FIG. 1 is a schematic cross-sectional view of the present invention;
FIG. 2 is a left side view of FIG. 1;
FIG. 3 is a schematic structural view of the shielding mechanism of FIG. 1;
FIG. 4 is a side view of FIG. 3;
FIG. 5 is a schematic structural view of a microwave radiating arm;
in the figure, 1, a hob-free cutter head, 2, a high-span central driving system, 3, a microwave emitter, 4, a microwave radiation arm, 41, a first telescopic cylinder, 42, a microwave emission end, 5, a high-pressure air jet nozzle, 6, a high-pressure air pipe, 61, a glass fiber layer, 7, a high-pressure air system, 8, a shield body, 81, a protection plate, 82, a second telescopic cylinder, 9, a propulsion oil cylinder, 10, a segment erector, 11, a segment, 12 and a spiral conveyor.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without inventive effort based on the embodiments of the present invention, are within the scope of the present invention.
Because the hob-free cutterhead 1 is driven by a high-span central driving system 2, the back of the hob-free cutterhead can have enough assembly space, and the microwave emitter 3 is arranged at the back of the hob-free cutterhead 1. The microwave emitter 3 is connected with a microwave radiation arm 4 leading to the front side of the hob-free cutter head 1. The microwave is an ultrahigh frequency electromagnetic wave with the wavelength of 0.01-1 m and the frequency of 0.3-300 GHz, has the characteristics of short wavelength and high frequency, and the commonly used rock breaking microwave frequency is 0.915 GHz and 2.45 GHz. The microwave heating of the rock is that the internal friction heat is generated by the high-frequency reciprocating motion of dipole molecules in the rock so as to raise the temperature of the rock, and the internal and external parts of the rock can be simultaneously heated and warmed without any heat conduction process.
The microwave generated by the microwave emitter 3 can be transmitted to the surface of the rock through the microwave radiation arm, and the rock is heated to more than 50 ℃ by utilizing different absorption characteristics of different mineral components in the rock to microwave energy. At this time, the rock is subjected to crystal fracture and transgranular fracture due to the internal stress generated by different thermal expansion of each mineral, so that the rock is damaged and microcracked, and the strength of the rock is reduced.
The hob-free cutter head 1 is provided with a high-pressure air jet nozzle 5, the high-pressure air jet nozzle 5 is connected with a high-pressure air system 7 through a high-pressure air pipe 6, and the high-pressure air jet nozzle 5 can emit high-pressure air larger than 5 MPa. The high-pressure air system is started on the basis of the action of microwaves, the rock generates strong thermal stress impact under huge temperature difference to generate cracks, and the cracks are subjected to the strong impact of high-pressure air, so that the rock is stripped under the multiple actions. The hob-free cutter head 1 is provided with a large slag hole, large stripped rocks can be discharged through the large slag hole, and the discharged rocks are discharged through the screw conveyor 12.
The invention adopts the microwave and high-pressure air jet flow coupled rock breaking system, thoroughly abandons the conventional cutter rock breaking technology, solves the problem that the metal cutter of the development machine is easy to be abnormally damaged when cutting rocks, improves the excavation efficiency and reduces the excavation cost.
The microwave radiation arm 4 comprises a microwave emission end 42 in plug-in fit with the hob-free cutter head 1, the microwave emission end 42 is connected with a first telescopic cylinder 41, one end of the first telescopic cylinder 41 is connected with the microwave emission end 42, and the other end of the first telescopic cylinder is connected with the hob-free cutter head 1. The first telescopic cylinder 41 can be used for driving the microwave transmitting end 42 to axially extend relative to the hob-free cutterhead 1, so that the microwave transmitting end 13 is close to the rock at the front end.
The first telescopic cylinder 41 is a first pneumatic telescopic cylinder or a first hydraulic telescopic cylinder, and the form of the first telescopic cylinder can be various, as long as the first telescopic cylinder can drive the microwave transmitting end 42 to realize stretching.
The other structure of this embodiment is the same as embodiment 1.
A threshold value for controlling the pressure in the first pneumatic telescopic cylinder or the first hydraulic telescopic cylinder to be constant is set in the controller, a pressure value monitored by the first pressure sensor in real time is compared with the threshold value, when the pressure value monitored in real time reaches the threshold value, the controller controls the electromagnetic valve to be switched off, the air inlet of the first pneumatic telescopic cylinder or the liquid inlet of the first hydraulic telescopic cylinder is closed, and the elongation of the first pneumatic telescopic cylinder or the first hydraulic telescopic cylinder is kept; when the real-time monitored pressure value is smaller than the threshold value, the controller controls the first electromagnetic valve to be communicated, the air inlet of the first pneumatic telescopic cylinder or the liquid inlet of the first hydraulic telescopic cylinder is communicated, and the first pneumatic telescopic cylinder or the first hydraulic telescopic cylinder extends until the pressure reaches the threshold value.
Therefore, the retractable microwave radiating arm 4 can be adaptively adjusted according to the distance between the hob-less cutter head 1 and the rock.
The other structure of this embodiment is the same as embodiment 2.
Embodiment 4, a hob-free hard rock boring machine for breaking rock by using microwaves and high-pressure air jet, as shown in fig. 1 and 2, a protection mechanism for protecting a microwave radiation arm 4 is provided on a front end surface of a hob-free cutter head 1. As shown in fig. 3 and 4, the protection mechanism includes a second telescopic cylinder 82 radially disposed in the hob-free cutterhead 1, and a protection plate 81 stopped at the front side of the microwave radiation arm 4 is connected to the telescopic end of the second telescopic cylinder 82. The extension of second telescoping cylinder 82 can drive guard plate 81 radial movement, and then can shelter from the protection to microwave radiation arm 4, needs to use microwave radiation arm 4 to carry out the during operation, and the retraction of second telescoping cylinder 82 can drive guard plate 81 and remove and shelter from microwave radiation arm 4.
Further, the second telescopic cylinder 82 is an electric telescopic cylinder, a pneumatic telescopic cylinder or a hydraulic telescopic cylinder. The form of the second telescopic cylinder may be various as long as it can drive the protection plate 81 to realize the extension and contraction.
Other structures of this embodiment may be the same as any of embodiments 1 to 3.
In embodiment 5, the second telescoping cylinder 82 is connected to a controller, and the controller is connected to the second telescoping cylinder 82 through a timer and a starter. The controller can set time for the timer according to the microwave heating duration, and after the microwave heating is carried out for several seconds, the second telescopic cylinder 82 drives the protection plate 81 to automatically and instantaneously cover and protect the microwave radiation arm 4, so that the broken rock fragments are prevented from rebounding to the microwave radiation arm 4 to cause damage.
The other structure of this embodiment is the same as embodiment 4.
Other structures of this embodiment may be the same as any of embodiments 1 to 5.
Other structures of this embodiment may be the same as any of embodiments 1 to 6.
Nothing in this specification is intended to be exhaustive of all conventional and well known techniques.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (11)
1. The utility model provides an utilize no hobbing cutter hard rock entry driving machine of broken rock of microwave and high-pressure wind efflux which characterized in that: the novel high-pressure air jet flow machine comprises a central driving system (2), wherein the central driving system (2) is connected with a non-hob cutter disc (1) through a connecting frame with the span of more than one meter, a microwave emitter (3) is arranged on the non-hob cutter disc (1), the microwave emitter (3) is connected with a microwave radiation arm (4), a high-pressure air jet flow nozzle (5) is arranged on the non-hob cutter disc (1), and the high-pressure air jet flow nozzle (5) is connected with a high-pressure air system (7) through a high-pressure air pipe (6.
2. The hobless hard rock boring machine for breaking rock by using microwave and high-pressure wind jet flow according to claim 2, characterized in that: the microwave radiation arm (4) is telescopic.
3. The hobless hard rock boring machine for breaking rock by using microwave and high-pressure wind jet flow according to claim 3, characterized in that: the microwave radiation arm (4) comprises a microwave transmitting end (42) which is in plug-in fit with the non-hob cutter head (1), the microwave transmitting end (42) is connected with a first telescopic cylinder (41), one end of the first telescopic cylinder (41) is connected with the microwave transmitting end (42), and the other end of the first telescopic cylinder is connected with the non-hob cutter head (1).
4. The hobless hard rock boring machine for breaking rock by using microwave and high-pressure wind jet flow according to claim 4, characterized in that: the microwave transmitting end (42) is made of copper or aluminum.
5. The hobless hard rock boring machine for breaking rock using microwave and high pressure wind jet according to any one of claims 1 to 4, characterized in that: the high-pressure wind jet nozzle (5) is arranged around the microwave emission end head (42).
6. The hobless hard rock boring machine for breaking rock by using microwave and high-pressure wind jet flow according to claim 5, characterized in that: the first telescopic cylinder (41) is a pneumatic telescopic cylinder or a hydraulic telescopic cylinder.
7. The hobless hard rock boring machine for breaking rock by using microwave and high-pressure wind jet flow according to claim 6, characterized in that: and a pressure sensor connected with a controller is arranged in the pneumatic telescopic cylinder or the hydraulic telescopic cylinder, and the controller is connected with an electromagnetic valve for controlling the on-off of an air inlet of the pneumatic telescopic cylinder or a liquid inlet of the hydraulic telescopic cylinder.
8. The hobless hard rock boring machine for breaking rock by using microwave and high-pressure wind jet flow according to claim 7, characterized in that: the controller is internally provided with a threshold value for controlling the pressure in the first telescopic cylinder (41) to be constant.
9. The hobless hard rock boring machine for breaking rock using microwave and high pressure wind jet according to any one of claims 1 to 4 or 6 to 8, characterized in that: the front end face of the hob-free cutter head (1) is provided with a protection mechanism of the microwave radiation arm (4), the protection mechanism comprises a second telescopic cylinder (82) which is radially arranged in the hob-free cutter head (1), and the telescopic end of the second telescopic cylinder (82) is connected with a protection plate (81) which is blocked at the front side of the microwave radiation arm (4).
10. The hobless hard rock boring machine for breaking rock by using microwave and high-pressure wind jet flow according to claim 9, characterized in that: the second telescopic cylinder (82) is an electric telescopic cylinder or a pneumatic telescopic cylinder or a hydraulic telescopic cylinder.
11. The hobless hard rock boring machine for breaking rock using microwave and high pressure wind jet according to claim 10, characterized in that: the second telescopic cylinder (82) is connected with a controller, and the controller is connected with the second telescopic cylinder (82) through a timer and a starter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010143590.9A CN112196565A (en) | 2020-03-04 | 2020-03-04 | Hob-free hard rock tunneling machine for breaking rock by utilizing microwave and high-pressure air jet |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010143590.9A CN112196565A (en) | 2020-03-04 | 2020-03-04 | Hob-free hard rock tunneling machine for breaking rock by utilizing microwave and high-pressure air jet |
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| CN112196565A true CN112196565A (en) | 2021-01-08 |
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| CN202010143590.9A Pending CN112196565A (en) | 2020-03-04 | 2020-03-04 | Hob-free hard rock tunneling machine for breaking rock by utilizing microwave and high-pressure air jet |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113107516A (en) * | 2021-05-13 | 2021-07-13 | 盾构及掘进技术国家重点实验室 | Hard rock tunnel boring machine with microwave heating and high-pressure water cutting combined assistance for rock breaking |
| CN113107515A (en) * | 2021-04-15 | 2021-07-13 | 中铁工程装备集团有限公司 | Free-section tunnel boring machine |
| CN113417655A (en) * | 2021-08-12 | 2021-09-21 | 国家电网有限公司 | Cutter head for tunnel boring machine with high rock breaking efficiency |
| WO2022232927A1 (en) * | 2021-05-06 | 2022-11-10 | TopEng Inc. | Tunnel extraction machine (tem) |
| WO2023144184A1 (en) * | 2022-01-25 | 2023-08-03 | Herrenknecht Ag | Device and method for sinking a shaft |
| CN116816370A (en) * | 2023-08-03 | 2023-09-29 | 中铁十四局集团装备有限公司 | Shield cutterhead for shield machine and shield construction method |
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| WO2022232927A1 (en) * | 2021-05-06 | 2022-11-10 | TopEng Inc. | Tunnel extraction machine (tem) |
| GB2622501A (en) * | 2021-05-06 | 2024-03-20 | Topeng Inc | Tunnel extraction machine (TEM) |
| CN113107516A (en) * | 2021-05-13 | 2021-07-13 | 盾构及掘进技术国家重点实验室 | Hard rock tunnel boring machine with microwave heating and high-pressure water cutting combined assistance for rock breaking |
| CN113107516B (en) * | 2021-05-13 | 2022-02-22 | 盾构及掘进技术国家重点实验室 | Hard rock tunnel boring machine with microwave heating and high-pressure water cutting combined assistance for rock breaking |
| CN113417655A (en) * | 2021-08-12 | 2021-09-21 | 国家电网有限公司 | Cutter head for tunnel boring machine with high rock breaking efficiency |
| WO2023144184A1 (en) * | 2022-01-25 | 2023-08-03 | Herrenknecht Ag | Device and method for sinking a shaft |
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