CN116359251B - Indoor model test method and device for crack propagation mechanism under high-energy radiation action of dry-hot rock - Google Patents
Indoor model test method and device for crack propagation mechanism under high-energy radiation action of dry-hot rock Download PDFInfo
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- CN116359251B CN116359251B CN202310636066.9A CN202310636066A CN116359251B CN 116359251 B CN116359251 B CN 116359251B CN 202310636066 A CN202310636066 A CN 202310636066A CN 116359251 B CN116359251 B CN 116359251B
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- 238000010998 test method Methods 0.000 title claims abstract description 18
- 238000012360 testing method Methods 0.000 claims abstract description 85
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N22/00—Investigating or analysing materials by the use of microwaves or radio waves, i.e. electromagnetic waves with a wavelength of one millimetre or more
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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Abstract
The invention provides an indoor model test method and device for a crack propagation mechanism under the action of high-energy radiation of dry-hot rock, and relates to the technical field of renewable energy sources, wherein the indoor test method comprises the following steps: preparing a customized rock sample, and forming test holes in the customized rock sample; placing the prepared customized rock sample in a rock sample metal sleeve; and directing microwaves to the inner wall of the test hole, and radiating the inner wall of the test hole through the microwaves until the custom rock sample breaks. The indoor test model method and the device for the crack propagation mechanism under the high-energy radiation effect of the dry-hot rock can truly simulate the crack propagation rule caused by the high-energy radiation of the deep dry-hot rock in a laboratory.
Description
Technical Field
The invention relates to the technical field of renewable energy sources, in particular to an indoor model test method and device for a crack propagation mechanism under the action of high-energy radiation of dry hot rock.
Background
The great development of clean renewable energy sources is a central key task of the energy industry. Compared with other renewable energy sources, the geothermal energy is stable and reliable, and is clean energy which is not influenced by factors such as seasons, weather, day and night changes and the like. The dry rock has huge heat reserves and wide distribution, and the proportion of the dry rock to the geothermal energy is more than 90 percent. The technology of utilizing microwave high-energy radiation to act on the dry hot rock to perform flexible storage high-efficiency exploitation and utilization is a key method for geothermal development.
The research of the crack propagation mechanism under the high-energy radiation effect of deep dry hot rock is an important research direction of geothermal development. In the existing research, the microwave heating system mostly places the whole material in the metal cavity to perform the whole microwave heating on the article, so as to research the heating characteristic and weakening behavior under the microwave radiation. However, the method is only suitable for observing the radiation action rule of microwaves on the whole material, in the underground construction process, the periphery of a well wall can be exposed to microwave radiation generally, and only the research of the radiation of the inner surface of the well has engineering significance, so that the conventional method is difficult to truly reproduce the crack expansion rule under the high-energy radiation action of the deep dry-hot rock under the well. Meanwhile, the material is directly placed in the metal cavity, so that larger microwave power density and radiation time are needed, the use efficiency of microwave radiation cannot be improved, and the radiation position area can be accurately positioned, so that the waste of time cost and economic cost is caused.
In view of this, the present inventors have devised an indoor model test device for crack propagation mechanism under the effect of high-energy radiation of dry hot rock through trial and error based on production design experience in the field and related fields for many years, so as to solve the problems in the prior art.
Disclosure of Invention
The invention aims to provide an indoor test method and device for a crack expansion mechanism under the effect of high-energy radiation of dry hot rock, which can truly simulate the crack expansion rule caused by the high-energy radiation of deep dry hot rock in a well in a laboratory.
In order to achieve the above purpose, the invention provides an indoor test method of a crack extension mechanism under the action of high-energy radiation of dry-hot rock, wherein the indoor test method comprises the following steps:
preparing a customized rock sample, and forming a test hole in the customized rock sample;
placing the prepared customized rock sample in a rock sample metal sleeve;
and directing microwaves to the inner wall of the test hole, and radiating the inner wall of the test hole through the microwaves until the custom rock sample breaks.
The invention also provides an indoor model test device of the crack propagation mechanism under the effect of the high-energy radiation of the dry-hot rock, wherein the indoor model test device at least comprises:
the microwave generating device is provided with a waveguide end, the waveguide end is columnar, and an opening for guiding out microwaves is formed in the side wall of the waveguide end;
the metal sleeve is arranged in an alignment manner with the waveguide end, a containing cavity is formed in the metal sleeve, and the containing cavity is opened towards one end of the waveguide end and is used for placing a customized rock sample.
Compared with the prior art, the invention has the following characteristics and advantages:
according to the indoor test method and device for the crack propagation mechanism under the high-energy radiation effect of the dry-hot rock, microwaves enter the test hole of the customized rock sample through the waveguide end, and are guided out through the opening on the side wall of the waveguide end, so that the inner side wall of the test hole is subjected to accurate positioning radiation. Under the action of microwaves, different dielectric materials in the rock absorb and reflect microwaves, but different volume expansion is generated due to the different capacities of the dielectric materials for absorbing and reflecting microwaves, and cracks are macroscopically generated in the rock under the action of the volume expansion. During the test, the waveguide ends with different shapes can be used for matching with the customized rock sample to realize the simulation of microwave radiation under different working conditions in the underground in actual engineering, so that the influence factors and the weakening mechanism of the microwave radiation rock surface in the well are known, and an effective indoor simulation method is provided for further researching the crack propagation mechanism under the action of high-energy radiation in the rock.
According to the indoor test method and device for the crack extension mechanism under the high-energy radiation effect of the dry-hot rock, microwaves enter the test hole of the customized rock sample through the waveguide end, the radiation target is small, the radiation distance is short, the use efficiency of microwave radiation is effectively improved, the customized rock sample can be broken only by a small amount of microwaves, and the dry-hot rock crack extension process under the indoor simulation high-energy radiation effect is possible.
According to the indoor test method and device for the crack expansion mechanism under the high-energy radiation effect of the dry-heat rock, the custom rock sample is wrapped by the metal sleeve, the metal sleeve can prevent the custom rock sample from being disintegrated and burst due to uneven heating, and the safety of the dry-heat rock crack expansion mechanism under the indoor simulation high-energy radiation effect is ensured.
Drawings
The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, proportional sizes, and the like of the respective components in the drawings are merely illustrative for aiding in understanding the present invention, and are not particularly limited. Those skilled in the art with access to the teachings of the present invention can select a variety of possible shapes and scale sizes to practice the present invention as the case may be.
FIG. 1 is an external view of an indoor model test apparatus according to the present invention;
FIG. 2 is a schematic diagram of an indoor model test device according to the present invention;
FIG. 3 is a schematic view of the installation of a metal sleeve according to the present invention;
FIG. 4 is a schematic view of a custom rock sample of the present invention disposed within a metal sleeve;
FIG. 5 is a schematic view of a waveguide tip in accordance with the present invention;
FIG. 6 is a schematic view of a custom rock sample of the present invention;
FIG. 7 is a schematic view of a metal sleeve according to the present invention.
Description of the reference numerals
| 100. Indoor modelA model test device; | 10. a microwave generating device; |
| 11. a waveguide end; | 111. opening holes; |
| 12. a waveguide; | 13. a magnetron; |
| 20. a metal sleeve; | 21. a bolt; |
| 30. customizing a rock sample; | 31. a test well; |
| 40. a microwave box; | 41. a test chamber; |
| 42. a door; | 43. a glass window; |
| 44. a lighting lamp; | 45. a door handle; |
| 50. a base; | 51. bolt holes; |
| 60. a control box; | 61. a PLC control panel; |
| 62. a microwave adjusting button; | 63. starting a switch; |
| 64. an emergency stop switch; | 70. and (3) a cable. |
Detailed Description
The details of the invention will be more clearly understood in conjunction with the accompanying drawings and description of specific embodiments of the invention. However, the specific embodiments of the invention described herein are for the purpose of illustration only and are not to be construed as limiting the invention in any way. Given the teachings of the present invention, one of ordinary skill in the related art will contemplate any possible modification based on the present invention, and such should be considered to be within the scope of the present invention.
The invention provides an indoor test method of a crack propagation mechanism under the action of high-energy radiation of dry-hot rock, which comprises the following steps:
preparing a customized rock sample, and forming test holes in the customized rock sample; the method comprises the steps of carrying out a first treatment on the surface of the
Placing the prepared customized rock sample in a rock sample metal sleeve;
and directing microwaves to the inner wall of the test hole, and radiating the inner wall of the test hole through the microwaves until the custom rock sample breaks.
The invention also provides an indoor model test device 100 of a crack propagation mechanism under the action of high-energy radiation of the dry-hot rock, as shown in fig. 1 to 7, the indoor model test device 100 at least comprises:
the microwave generating device 10 is provided with a waveguide end 11, the waveguide end 11 is columnar, and an opening 111 for guiding out microwaves is formed in the side wall of the waveguide end 11;
the metal sleeve 20 is arranged in alignment with the waveguide end 11, and a containing cavity is arranged in the metal sleeve, is open towards one end of the waveguide end 11 and is used for placing the customized rock sample 30.
According to the indoor test method and device for the crack propagation mechanism under the high-energy radiation effect of the dry-hot rock, microwaves generated by the microwave generating device 10 can enter the test hole 31 of the customized rock sample 30 through the waveguide end 11 and are guided out through the opening 111 on the side wall of the waveguide end 11, so that the inner side wall of the test hole 31 is subjected to accurate positioning radiation. Under the action of microwaves, different dielectric materials in the rock absorb and reflect microwaves, but different volume expansion is generated due to the different capacities of the dielectric materials for absorbing and reflecting microwaves, and cracks are macroscopically generated in the rock under the action of the volume expansion. During the test, the waveguide ends 11 with different shapes can be used in cooperation with the customized rock sample 30 to realize the simulation of microwave radiation under different working conditions in the underground in actual engineering, so that the influence factors and the weakening mechanism of the microwave radiation rock surface in the well are known, and an effective indoor simulation method is provided for the deep research of the crack propagation mechanism caused by the underground high-energy radiation rock side wall.
According to the indoor test method and device for the crack extension mechanism under the high-energy radiation effect of the dry-hot rock, microwaves enter the test hole 31 of the customized rock sample 30 through the waveguide end head 11, the radiation target is small, the radiation distance is short, the use efficiency of microwave radiation is effectively improved, the customized rock sample 30 can be broken only by a small amount of microwaves, and the dry-hot rock crack extension process under the indoor simulation high-energy radiation effect is possible.
According to the indoor test method and device for the crack extension mechanism under the high-energy radiation effect of the dry-heat rock, the custom rock sample 30 is wrapped by the metal sleeve 20, the metal sleeve 20 can prevent the custom rock sample 30 from disintegrating and cracking due to uneven heating, and the safety of the crack extension mechanism of the dry-heat rock under the indoor simulation high-energy radiation effect is ensured.
In an alternative embodiment of the present invention, the indoor model test apparatus 100 further includes a microwave box 40, the interior of the microwave box 40 is hollow and is formed with a test chamber 41, the microwave generating apparatus 10 is disposed at the top of the test chamber 41 and is fixedly connected with the top of the microwave box 40, the bottom of the test chamber 41 is provided with a base 50, and the metal sleeve 20 is disposed on the base 50. By adopting the structure, during the test, the microwave generating device 10, the metal sleeve 20 and the customized rock sample 30 are arranged in the microwave box 40, so that the influence of the external environment on the test is avoided, and the accuracy of the test result is ensured; but also can prevent microwave from leaking out, and effectively protect operators; damage and destruction of test personnel and equipment by crushed rock after fracturing of the custom rock sample 30 can also be avoided.
In an alternative example of this embodiment, the base 50 is a liftable base, the top surface of the base 50 is provided with a bolt hole 51, the bottom of the metal sleeve 20 is provided with a bolt 21, the top end of the bolt 21 is fixedly connected with the bottom of the metal sleeve 20, and the bottom end of the bolt 21 is screwed in the bolt hole 51. With the above structure, the metal sleeve 20 is fixedly connected to the base 50, so as to avoid the toppling of the metal sleeve 20 when the base 50 is lifted. Meanwhile, in the test, the liftable base is also convenient for putting in and taking out the customized rock sample 30.
In an alternative embodiment of the present invention, the metal sleeve 20 is made of stainless steel.
In an alternative embodiment of the invention, the inner diameter of the metal sleeve 20 is arranged so that a pre-formed rock sample can just be placed, preferably the inner diameter of the metal sleeve ruler is 51mm and the height is 100mm.
In an alternative example of this embodiment, a door 42 capable of being opened and closed is provided on a side wall of the microwave box 40, and a glass window 43 is provided on the door 42.
In an alternative example, the glass window 43 is composed of a metal mesh and tempered glass, preventing microwave spillage.
In an alternative example, an illumination lamp 44 is further provided in the test chamber 41, and the illumination lamp 44 is fixed to the inner wall of the microwave box 40.
In an alternative example, the door 41 is provided with a door handle 45, and the door handle 45 is mounted on the outside of the door 41.
In an alternative embodiment of the present invention, the microwave generating device 10 further includes a magnetron 13 and a waveguide 12, and the magnetron 13, the waveguide 12 and the waveguide tip 11 are sequentially connected, and the waveguide 12 is a variable cross-section waveguide. Microwaves are first generated by the magnetron 13 and then guided through the waveguide 12 into the waveguide tip 11 and finally from the waveguide tip 11 into the test hole 31 of the custom rock sample 30. Meanwhile, the variable-section waveguide tube can gradually gather and guide microwaves into the waveguide end head 11, and the inner side wall of the test hole 31 is heated through the opening 111 of the waveguide end head 11, under the path, the microwaves are gradually shrunk and gathered, so that the microwave power density at the opening 111 of the waveguide end head 11 is greatly increased, the microwave use efficiency under the same power is improved, and the microwave radiation time for achieving the rock fracturing effect is greatly shortened.
In an alternative example of this embodiment, the magnetron 13 is mounted on the outer top of the microwave box 40, one end of the waveguide 12 is connected to the magnetron 13, the other end of the waveguide 12 extends through the top of the microwave box 40 and into the test chamber 41, and the other end of the waveguide 12 is connected to the waveguide tip 11.
In an alternative example, the magnetron 13, the waveguide 12 and the waveguide tip 11 are respectively stainless steel pipes, and the magnetron 13 and the waveguide 12 and the waveguide tip 11 are welded.
In an alternative example of this embodiment, the cross section of the waveguide 12 may be different, and the variable cross section waveguide 12 with different shape may be replaced during the test, so as to analyze the microwave heating efficiency under the waveguide 12 with different shape, so as to obtain the rock crack propagation rule under different working conditions.
In an alternative example of this embodiment, the cross section of the waveguide 12 gradually decreases in the direction from the magnetron 13 to the waveguide tip 11.
In an alternative example, the waveguide 12 is composed of two square-shaped ducts, the top of the first square-shaped duct is connected to the magnetron 13, the bottom of the first square-shaped duct is smaller than the top, the top of the second square-shaped duct is connected to the bottom of the first square-shaped duct, the bottom of the second square-shaped duct is smaller than the top, and the waveguide tip 11 is inserted into the test hole 31 after being connected to the bottom of the second square-shaped duct.
In an alternative embodiment of the present invention, the waveguide end 11 may have a cylindrical, triangular prism shape or a quadrangular prism shape.
In an alternative example of this embodiment, when the waveguide end 11 is cylindrical, it is 20mm in diameter and 50mm in height; when the waveguide end 11 is in a triangular prism shape, the side length of the triangular prism is 20mm, and the height is 50mm; when the waveguide end 11 is in a quadrangular prism shape, the side length of the quadrangular prism is 20mm, and the height is 50mm.
In an alternative embodiment of the present invention, the waveguide end 11 is provided with a plurality of openings 111.
In an alternative embodiment of the invention, the openings 111 are rectangular holes, preferably the openings 111 are rectangular holes having dimensions 10mm by 5 mm.
In an alternative embodiment of the present invention, the indoor model test apparatus 100 further includes a control box 60, and a PLC control panel 61, a microwave adjusting button 62, a start switch 63, and a scram switch 64 are disposed in the control box 60, and the PLC control panel 61 is electrically connected to the microwave adjusting button 62, the start switch 63, the scram switch 64, and the microwave generating apparatus 10, respectively.
In an alternative example of this embodiment, a PLC control panel 61, a microwave adjusting button 62, a start switch 63, and a scram switch 64 are mounted on the front panel of the control box 60.
In an alternative example of this embodiment, the microwave generating device 10 is connected to the PLC control panel 61 through a cable 70, one end of the cable 70 is connected to the right lower side of the back plate of the control box 60, and the other end of the cable 70 is connected to the magnetron.
In an alternative example of this embodiment, the PLC control panel 61 may display the temperature in the microwave box 40 in real time, and may also control the height of the base 50 to facilitate the disassembly and assembly of the customized rock sample 30, with a precision of up to 1mm; meanwhile, the PLC control panel can also adjust the microwave power,
in an alternative example, the microwave generating device 10 may be a microwave oven with a high frequency, i.e. the microwave generating device 10 may have a frequency higher than the conventional frequency of 2.45GHz.
In an alternative embodiment of the present invention, the customized rock sample 30 is in a column shape, and a test hole 31 is formed on an end surface of one end of the customized rock sample 30, and the waveguide end 11 extends into the test hole 31 and guides microwaves to an inner wall of the test hole 31 through the opening 111.
In an alternative example of this embodiment, the test hole 31 is formed in the top center of the custom rock sample 30, and the depth of the test hole 31 is 50mm.
Further, the test hole 31 may have a shape of a cylinder, a triangular prism, or a quadrangular prism.
Preferably, when the test hole 31 is cylindrical, the diameter of the cylinder is 21mm and the height is 50mm; when the test hole 31 is triangular prism-shaped, the triangular prism has a side length of 21mm and a height of 50mm; when the test hole 31 is of a quadrangular prism shape, the side length of the quadrangular prism is 21mm, and the height is 50mm.
The invention provides an indoor test method and device for a crack propagation mechanism under the action of high-energy radiation of dry-hot rock, which comprises the following specific implementation processes:
(1) Firstly, customizing three kinds of customized rock samples 30 according to test requirements, wherein the shapes of test holes 31 of the three kinds of customized rock samples 30 are respectively cylindrical, triangular prism-shaped and quadrangular prism-shaped, and the corresponding sizes of the three test holes 31 are respectively cylindrical with the diameter of 21mm and the height of 50mm; the side length of the triangular prism is 21mm, and the height is 50mm; the side length of the quadrangular prism is 21mm, and the height is 50mm;
(2) Customizing the waveguide end 11, customizing the cylindrical, triangular prism-shaped and quadrangular prism-shaped waveguide ends 11 according to three types of customizing rock samples 30, wherein the three types of waveguide ends 11 respectively correspond to the cylindrical shape with the diameter of 20mm and the height of 50mm; the side length of the triangular prism is 20mm, and the height is 50mm; the side length of the quadrangular prism is 20mm, the height is 50mm, and meanwhile, 10mm multiplied by 5mm open holes 111 (rectangular windows) are respectively formed in the side wall of the waveguide end 11 so as to facilitate microwave guiding-out;
(3) Connecting the waveguide tip 11 with a variable cross-section waveguide 12;
(4) Loading a custom rock sample 30 into a metal sleeve 20;
(5) Fixing the metal sleeve 20 to a bolt hole 51 in the liftable base 50 by a bottom bolt 21;
(6) Opening the start switch 63;
(7) The height of the base 50 is adjusted through the PLC control panel 61 until the test requirement is met;
(8) Inserting the waveguide tip 11 into the test hole 31 of the custom rock sample 30;
(9) Closing the door 41 provided with the glass window 43;
(10) The microwave adjusting button 62 is turned to a preset power, and radiation fracturing is performed in the test hole 31 of the customized rock sample 30 by microwaves, so that the test is completed.
The main working principle of the indoor test method of the crack propagation mechanism under the effect of the high-energy radiation of the dry-hot rock provided by the invention is as follows:
when the microwave adjusting button 62 rotates to a preset power, the alternating current transmitted by the cable 70 is converted into direct current and is transmitted to the magnetron 13, the magnetron 13 consists of a vertical electric field and a vertical magnetic field, LC oscillation is generated through the movement of electrons to emit microwaves, and the microwaves are gradually contracted and gathered through the variable-section waveguide tube 12 and are transmitted to the waveguide end 11. Microwaves enter the test hole 31 through the waveguide end 11, the microwaves directly act on the inner wall of the test hole 31 through 10mm multiplied by 5mm openings 111 (rectangular windows) on the side wall of the waveguide end 11, and the different dielectric materials in the rock absorb and reflect different microwave energy under the action of the microwaves, so that different volume expansion is generated, and cracks are macroscopically generated in the rock under the action of the volume expansion.
The indoor model test device for the crack extension mechanism under the high-energy radiation action of the dry-hot rock is easy to process, materials are easy to obtain, structural assembly parts are simple, the crack extension test under the high-energy radiation action of the deep dry-hot rock can be effectively simulated in a laboratory, and the accurate positioning radiation on the inner side wall of the test hole 31 is realized. Meanwhile, the combination of the variable-section waveguide tube 12 and the waveguide end 11 gathers the microwaves inside the waveguide end 11, so that the microwave power density at the opening of the waveguide end 11 is greatly increased, the use efficiency under the same microwave power is improved, and the microwave radiation time is greatly shortened to achieve the rock fracturing effect.
The detailed explanation of the embodiments described above is only for the purpose of explaining the present invention so as to enable a better understanding of the present invention, but the descriptions should not be construed as limiting the present invention in any way, and in particular, the respective features described in the different embodiments may be arbitrarily combined with each other to constitute other embodiments, and these features should be understood as being applicable to any one embodiment, except for the explicitly contrary descriptions.
Claims (6)
1. An indoor model test method of a crack propagation mechanism under the action of high-energy radiation of dry-hot rock is characterized by comprising the following steps:
preparing a customized rock sample, wherein the customized rock sample is cylindrical, and a testing hole is formed in the center of the top of the customized rock sample;
placing the prepared customized rock sample in a rock sample metal sleeve, wherein a containing cavity is formed in the metal sleeve, and one end of the containing cavity is opened and used for placing the customized rock sample; the inner diameter of the metal sleeve is set so that the custom rock sample can be just put in;
the microwave generating device is used for guiding microwaves to the inner wall of the test hole in a directional manner, and comprises a waveguide end, a waveguide tube and a magnetron which are sequentially connected, wherein the waveguide tube is a variable-section waveguide tube, the waveguide end stretches into the test hole, and the microwaves radiate the inner wall of the test hole until the customized rock sample is broken;
customizing three customized rock samples according to test requirements, wherein the shapes of the test holes of the three customized rock samples are respectively cylindrical, triangular prism-shaped and quadrangular prism-shaped;
the waveguide ends of three different shapes, cylindrical, triangular prism, and quadrangular prism, are customized according to the three types of customized rock samples.
2. An indoor model test device of crack extension mechanism under dry hot rock high energy radiation effect, its characterized in that, indoor model test device includes at least:
the microwave generating device is provided with a waveguide end, a waveguide tube and a magnetron which are sequentially connected, the waveguide end is columnar, an opening for guiding out microwaves is formed in the side wall of the waveguide end, and the waveguide tube is a variable-section waveguide tube;
the metal sleeve is arranged in alignment with the waveguide end, a containing cavity is formed in the metal sleeve, and the containing cavity is opened towards one end of the waveguide end and is used for placing a customized rock sample; the customized rock sample is cylindrical, a testing hole is formed in the center of the top of the customized rock sample, the waveguide end head stretches into the testing hole, and the inner diameter of the metal sleeve is set to enable the customized rock sample to be just put in;
customizing three customized rock samples according to test requirements, wherein the shapes of the test holes of the three customized rock samples are respectively cylindrical, triangular prism-shaped and quadrangular prism-shaped;
customizing the waveguide ends in three different shapes of a cylinder shape, a triangular prism shape and a quadrangular prism shape according to the three customized rock samples;
the indoor model test device further comprises a microwave box body, a test chamber is formed in the hollow inside of the microwave box body, the microwave generating device is arranged at the top of the test chamber and is fixedly connected with the top end of the microwave box body, a base is arranged at the bottom of the test chamber, and the metal sleeve is arranged on the base;
the base is the liftable base, the bolt hole has been seted up on the top surface of base, the bolt is installed to metal telescopic bottom, the bolt top with metal telescopic bottom fixed connection, the bolt bottom spiral shell is located in the bolt hole.
3. The indoor model test device for the crack propagation mechanism under the action of the high-energy radiation of the dry-hot rock is characterized in that a box door capable of being opened and closed is arranged on the side wall of the microwave box body, and a glass window is arranged on the box door.
4. The indoor model test device for the crack propagation mechanism under the action of the high-energy radiation of the dry-hot rock according to claim 2, wherein an illuminating lamp is further arranged in the test chamber.
5. The device for in-chamber modeling of crack propagation mechanism under the action of high-energy radiation of dry-heated rock according to claim 4, wherein the cross section of the waveguide tube gradually decreases in the direction from the magnetron to the waveguide tip.
6. The indoor model test device for the crack propagation mechanism under the action of the high-energy radiation of the dry-hot rock is characterized by further comprising a control box, wherein a PLC control panel, a microwave adjusting button, a starting switch and a scram switch are arranged in the control box, and the PLC control panel is electrically connected with the microwave adjusting button, the starting switch, the scram switch and the microwave generating device respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310636066.9A CN116359251B (en) | 2023-05-31 | 2023-05-31 | Indoor model test method and device for crack propagation mechanism under high-energy radiation action of dry-hot rock |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310636066.9A CN116359251B (en) | 2023-05-31 | 2023-05-31 | Indoor model test method and device for crack propagation mechanism under high-energy radiation action of dry-hot rock |
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| CN116359251A CN116359251A (en) | 2023-06-30 |
| CN116359251B true CN116359251B (en) | 2024-01-02 |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035316A (en) * | 2017-05-26 | 2017-08-11 | 东北大学 | A kind of rock surface fracturing microwave focusing radiator |
| CN108684099A (en) * | 2018-05-11 | 2018-10-19 | 东北大学 | Fracturing HIGH-POWERED MICROWAVES coaxial heater in a kind of engineering rock mass hole |
| CN108678761A (en) * | 2018-05-11 | 2018-10-19 | 东北大学 | A kind of rock microwave fracturing experimental rig based on true triaxial load |
| CN111220525A (en) * | 2020-01-20 | 2020-06-02 | 中南大学 | Supercritical carbon dioxide rock fracture seepage device under high-temperature and high-pressure conditions |
| CN111521490A (en) * | 2020-06-08 | 2020-08-11 | 山东科技大学 | Induction test device for hydrogen bond fracture of loaded coal rock |
| CN112378808A (en) * | 2020-12-04 | 2021-02-19 | 东北大学 | Microwave intelligent loading fracturing hard rock test system based on true triaxial stress |
| CN113075112A (en) * | 2021-04-26 | 2021-07-06 | 东北大学 | Experimental device and method for hydraulic fracturing and microwave fracturing combined permeability-increasing shale |
| CN115929280A (en) * | 2022-10-27 | 2023-04-07 | 中国地质调查局水文地质环境地质调查中心 | Calibration/calibration device and method for ultrasonic sensor for geothermal well logging |
| CN116026866A (en) * | 2021-10-26 | 2023-04-28 | 中国石油天然气集团有限公司 | Rock crack morphology and crack width monitoring system and method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8950252B2 (en) * | 2012-04-20 | 2015-02-10 | Halliburton Energy Services, Inc. | High pressure rock core testing |
| CN107101890B (en) * | 2017-06-23 | 2018-10-30 | 西南石油大学 | High temperature rock sample strains and sonic test device and test method |
| CN108463020B (en) * | 2018-05-11 | 2020-10-09 | 东北大学 | Large-power microwave hole internal cracking device for engineering rock mass |
-
2023
- 2023-05-31 CN CN202310636066.9A patent/CN116359251B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035316A (en) * | 2017-05-26 | 2017-08-11 | 东北大学 | A kind of rock surface fracturing microwave focusing radiator |
| CN108684099A (en) * | 2018-05-11 | 2018-10-19 | 东北大学 | Fracturing HIGH-POWERED MICROWAVES coaxial heater in a kind of engineering rock mass hole |
| CN108678761A (en) * | 2018-05-11 | 2018-10-19 | 东北大学 | A kind of rock microwave fracturing experimental rig based on true triaxial load |
| CN111220525A (en) * | 2020-01-20 | 2020-06-02 | 中南大学 | Supercritical carbon dioxide rock fracture seepage device under high-temperature and high-pressure conditions |
| CN111521490A (en) * | 2020-06-08 | 2020-08-11 | 山东科技大学 | Induction test device for hydrogen bond fracture of loaded coal rock |
| CN112378808A (en) * | 2020-12-04 | 2021-02-19 | 东北大学 | Microwave intelligent loading fracturing hard rock test system based on true triaxial stress |
| CN113075112A (en) * | 2021-04-26 | 2021-07-06 | 东北大学 | Experimental device and method for hydraulic fracturing and microwave fracturing combined permeability-increasing shale |
| CN116026866A (en) * | 2021-10-26 | 2023-04-28 | 中国石油天然气集团有限公司 | Rock crack morphology and crack width monitoring system and method |
| CN115929280A (en) * | 2022-10-27 | 2023-04-07 | 中国地质调查局水文地质环境地质调查中心 | Calibration/calibration device and method for ultrasonic sensor for geothermal well logging |
Non-Patent Citations (5)
| Title |
|---|
| A novel true triaxial test system for microwave-induced fracturing of hard rocks;Xia-Ting Feng 等;Journal of Rock Mechanics and Geotechnical Engineering;第43卷(第5期);第961-971页 * |
| The Microwave-Induced Fracturing of Hard Rock;Gao-Ming Lu 等;Rock Mechanics and Rock Engineering;第52卷;第3017-3032页 * |
| 基于有限元方法的波导管结构电磁屏蔽屏蔽效能分析;王立龙 等;电子器件;第37卷(第06期);第1068-1071页 * |
| 微波技术辐射岩石实验探讨与成孔应用研究进展;陈登红等;科学技术与工程;第22卷(第22期);第9447-9455页 * |
| 微波辅助机械破岩试验和理论研究进展;卢高明等;岩土工程学报;第38卷(第08期);第1497-1506页 * |
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