CN117804859A - Oblique splitting crack device for injection induced dry-hot rock fault activation - Google Patents
Oblique splitting crack device for injection induced dry-hot rock fault activation Download PDFInfo
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- CN117804859A CN117804859A CN202311767581.7A CN202311767581A CN117804859A CN 117804859 A CN117804859 A CN 117804859A CN 202311767581 A CN202311767581 A CN 202311767581A CN 117804859 A CN117804859 A CN 117804859A
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- 239000011435 rock Substances 0.000 title claims abstract description 44
- 230000004913 activation Effects 0.000 title claims abstract description 40
- 238000002347 injection Methods 0.000 title claims abstract description 36
- 239000007924 injection Substances 0.000 title claims abstract description 36
- 238000012360 testing method Methods 0.000 abstract description 41
- 230000007246 mechanism Effects 0.000 abstract description 11
- 230000004048 modification Effects 0.000 abstract description 8
- 238000012986 modification Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 19
- 206010017076 Fracture Diseases 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 208000010392 Bone Fractures Diseases 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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- Sampling And Sample Adjustment (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to the technical field of dry-hot rock, in particular to an inclined splitting crack device for injection induced dry-hot rock fault activation, which comprises an upper disc and a lower disc, wherein a first inclined cutting edge is arranged on one side of the upper disc, which is close to the lower disc, a second inclined cutting edge is arranged on one side of the lower disc, which is close to the upper disc, the first inclined cutting edge and the second inclined cutting edge are used for inclined cutting of a cylinder sample, and the first inclined cutting edge and the axis of the cylinder sample are arranged in an inclined manner. According to the invention, the first oblique cutting edge and the second oblique cutting edge are used for oblique cutting of the cylindrical sample, so that the cracks generated by the cylindrical sample are similar to the fracture layer of the dry-hot rock reservoir, and the cracks generated by the cylindrical sample have certain roughness, so that the cracks generated by the cylindrical sample are more close to a real state, the influence of an indoor test of injection-induced fault activation is reduced, the accuracy of test results is improved, and the injection-induced fault activation mechanism in the modification of the dry-hot rock reservoir can be further understood.
Description
Technical Field
The invention relates to the technical field of dry-hot rock, in particular to an inclined splitting crack device for injection-induced dry-hot rock fault activation.
Background
After the "two carbon" goal has been set forth, geothermal resources have begun to receive more attention as a green energy source. The dry hot rock is used as geothermal resource and has the characteristics of wide range, safety, reliability and huge reserves. However, the natural fracture development degree in the dry-hot rock reservoir is low, an effective flow network is difficult to form, and the reservoir is generally reformed by manual means to form the effective fracture network. Injection of large amounts of high pressure fluids into the hot dry rock reservoir can lead to increased pore water pressure, coupled with stress disturbances from reservoir modification, which can induce hot dry rock reservoir failure to activate, which can jeopardize public safety and reduce hot dry rock reservoir life. Therefore, the injection-induced dry-hot rock activation mechanism can be studied in an indoor test to further understand the dry-hot rock reservoir transformation and fault activation mechanism, and the method has important significance for the dry-hot rock reservoir transformation and long-term stability.
At present, in the indoor test research of radiation induced fault activation, a cylindrical sample is mostly cut by adopting a vertical split crack or an inclined linear cutting crack, and the research results provide a certain knowledge background for the injection induced dry-hot rock fault activation mechanism. However, in the vertical splitting crack, a shearing sliding space is needed to be vacated by the silica gel sheet at the upper pressure head and the lower pressure head, and along with the increase of shearing sliding displacement, the possible resistance generated by the silica gel sheet can also be increased along with deformation, which greatly influences the test result and further influences the analysis injection induced fault activation mechanism. For a wire-cut inclined fracture, the fracture appearance is similar to a dry hot rock reservoir fracture. However, the dry rock reservoir discontinuities must have some roughness, while the use of pre-cut oblique fractures has almost negligible roughness, which also affects the test results.
How to reduce the influence of the indoor test of injection induced fault activation, so that the injection induced fault activation mechanism in the modification of the dry hot rock reservoir can be further understood.
Disclosure of Invention
The invention aims to provide an inclined splitting crack device for injection induced dry-hot rock fault activation, which is characterized in that a first inclined cutting edge and a second inclined cutting edge are used for inclined splitting a cylinder sample, so that cracks generated by the cylinder sample are similar to a dry-hot rock reservoir interruption layer, the cracks generated by the cylinder sample have certain roughness, the cracks generated by the cylinder sample are more similar to a real state, the influence of an indoor test of injection induced fault activation is reduced, the accuracy of test results is improved, and the injection induced fault activation mechanism in the modification of the dry-hot rock reservoir can be further understood.
In order to achieve the aim of the invention, the invention adopts the technical scheme that: the utility model provides a slope split crack device for injection induction dry-hot rock fault activation, includes upper disc and lower disc, the upper disc is close to one side of lower disc is provided with first oblique cutting edge, the lower disc is close to one side of upper disc is provided with the second oblique cutting edge, first oblique cutting edge with the second oblique cutting edge is used for the oblique to cylinder sample, the axis slope setting of first oblique cutting edge and cylinder sample, the axis slope setting of second oblique cutting edge and cylinder sample.
The invention is used in practice: the device and the universal testing machine are matched for use, the cylindrical sample is fixed through the universal testing machine, the upper disc and the lower disc are arranged on the universal testing machine, the cylindrical sample is located between the upper disc and the lower disc, then the universal testing machine drives the upper disc and the lower disc to move close to each other, the first oblique cutting edge and the second oblique cutting edge are used for oblique cutting of the cylindrical sample, cracks generated by the cylindrical sample are similar to a dry hot rock reservoir fracture layer, the cracks generated by the cylindrical sample can be enabled to have certain roughness, the cracks generated by the cylindrical sample are enabled to be more close to a real state, the influence of an injection induced fault activation indoor test is reduced, the accuracy of test results is improved, and therefore the injection induced fault activation mechanism in the modification of the dry hot rock reservoir can be further understood.
Further, the cutting edge of the first oblique cutting edge is arc-shaped, and the cutting edge of the second oblique cutting edge is arc-shaped.
By adopting the technical scheme, the arc-shaped cutting edge is easier to split the cylindrical sample, and the stability of the first oblique cutting edge and the second oblique cutting edge to the splitting of the cylindrical sample is improved.
Further, the upper disc is close to one side of the lower disc and forms a first arc-shaped groove, a first oblique cutting edge is fixed on the groove wall of the first arc-shaped groove, the first oblique cutting edge and the axis of the first arc-shaped groove are obliquely arranged, the lower disc is close to one side of the upper disc and forms a second arc-shaped groove, the second oblique cutting edge is fixed on the groove wall of the second arc-shaped groove, the axes of the second oblique cutting edge and the second arc-shaped groove are obliquely arranged, and the axes of the first arc-shaped groove and the second arc-shaped groove are respectively parallel to the axis of the cylinder sample.
Through adopting above-mentioned technical scheme, form the split space of cylinder sample between first arc wall and the second arc wall, and first arc wall maintains the shape of first oblique cutting edge more easily, and the second arc wall maintains the shape of second oblique cutting edge more easily, can improve the stability of first oblique cutting edge and second oblique cutting edge at splitting cylinder sample in-process, reduces the influence that the indoor test that injection induced fault activated received, has improved the accuracy of test result.
Further, the arc angle range of the first arc-shaped groove is 165-175 degrees, and the arc angle range of the second arc-shaped groove is 165-175 degrees.
Through adopting above-mentioned technical scheme, when first wedge sword and second wedge sword are to cylinder sample surface contact, the axis coincidence of first arc wall and second arc wall, and the axis coincidence of first arc wall and cylinder sample because the angle of first arc wall and second arc wall is when this scope for upper disc and lower inventory are at the interval this moment for first wedge sword and second wedge sword can displace under the external force effect, are convenient for carry out the wedge to the cylinder sample.
Further, the two end faces of the first oblique cutting edge are flush with the end face of the upper disc, which is close to the lower disc, and the two end faces of the second oblique cutting edge are flush with the end face of the lower disc, which is close to the upper disc.
By adopting the technical scheme, the splitting range of the first oblique cutting edge and the second oblique cutting edge to the cylindrical sample can be improved.
Further, the first oblique cutting edge and the second oblique cutting edge are symmetrically arranged.
Through adopting above-mentioned technical scheme, at the in-process of splitting cylinder sample, can keep the shape of the crack of cylinder sample, and through the symmetry setting, at the in-process of splitting cylinder sample, can keep the atress stability of cylinder sample.
Further, when the first oblique cutting edge and the second oblique cutting edge are respectively contacted with the cylindrical sample, the first oblique cutting edge and the second oblique cutting edge are respectively attached to the cylindrical sample.
By adopting the technical scheme, the splitting effect on the cylindrical sample can be improved.
Further, a first force application plane is formed on one side, far away from the lower disc, of the upper disc, a second force application plane is formed on one side, far away from the upper disc, of the lower disc, and the first force application plane and the second force application plane are arranged in parallel.
Through adopting above-mentioned technical scheme, in the use, apply the effort of perpendicular to first application of force plane to the upper disc with the help of the universal testing machine, apply the effort of perpendicular to second application of force plane to the lower disc with the help of the universal testing machine, first application of force plane and second application of force plane are convenient for the universal testing machine to upper disc and lower disc application of force, can improve the stability to the cylinder sample splitting in-process.
Further, the cross section of the first oblique cutting edge is triangular, and the cross section of the second oblique cutting edge is triangular.
Through adopting above-mentioned technical scheme, the first oblique cutting edge and the second oblique cutting edge of this kind of structure are convenient for split to cylinder sample, and at the in-process of splitting cylinder sample for the crack that cylinder sample produced has certain roughness, makes the crack that cylinder sample produced be close to true state more, improves the accuracy of follow-up test result.
Further, a plurality of guide posts are arranged on one side of the lower disc, which is close to the upper disc, a plurality of guide holes are formed on one side of the upper disc, which is close to the lower disc, and the guide posts and the guide holes are in one-to-one fit.
Through adopting above-mentioned technical scheme, through guide post and guiding hole cooperation, can make at the in-process of splitting cylinder sample, upper disc and lower disc can remain symmetrical state all the time, can improve the stability to the in-process of splitting of cylinder sample.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the first oblique cutting edge and the second oblique cutting edge which are oblique to the cylindrical sample are arranged, so that in the using process, the first oblique cutting edge and the second oblique cutting edge oblique to the cylindrical sample, the cracks generated by the cylindrical sample are similar to those generated by the dry hot rock reservoir fracture layer, and the cracks generated by the cylindrical sample have certain roughness, so that the cracks generated by the cylindrical sample are more similar to a real state, the influence of an indoor test of injection induced fault activation is reduced, the accuracy of test results is improved, and the injection induced fault activation mechanism in the modification of the dry hot rock reservoir can be further understood.
2. According to the invention, when the first oblique cutting edge and the second oblique cutting edge are respectively contacted with the cylindrical sample, the first oblique cutting edge and the second oblique cutting edge are respectively attached to the cylindrical sample, and the first oblique cutting edge and the second oblique cutting edge with the structure can improve the splitting effect on the cylindrical sample.
3. According to the invention, the plurality of guide posts are arranged on the lower disc, and the plurality of guide holes which are in plug-in fit with the guide posts are arranged on the upper disc, so that the upper disc and the lower disc can always maintain a symmetrical state in the process of splitting the cylindrical sample, and the stability of the cylindrical sample in the splitting process can be improved.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention.
Fig. 1 is a schematic structural diagram of an oblique fracture splitting device for injection-induced dry-hot rock fault activation according to an embodiment of the invention.
Fig. 2 is a schematic diagram of the structure of the upper disc according to the embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a bottom wall according to an embodiment of the present invention.
Fig. 4 is a schematic view showing a state where the first wedge and the second wedge are in contact with the cylindrical sample according to the embodiment of the present invention.
Wherein, the reference numerals are as follows: 001. a cylindrical sample; 1. a top plate; 2. a lower plate; 3. a first arc-shaped groove; 4. a first wedge edge; 5. a second arc-shaped groove; 6. a second wedge edge; 7. a first force application plane; 8. a second force application plane; 9. a guide post; 10. and a guide hole.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. Of course, the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
Examples:
referring to fig. 1 to 4, the invention provides a technical scheme that an oblique splitting and cracking device for injection induction dry-hot rock fault activation comprises an upper disc 1 and a lower disc 2, wherein a first arc-shaped groove 3 is formed on one side, close to the lower disc 2, of the upper disc 1, a first oblique cutting edge 4 is fixed on the groove wall of the first arc-shaped groove 3, and the axes of the first oblique cutting edge 4 and the first arc-shaped groove 3 are obliquely arranged. The cutting edge of the first oblique cutting edge 4 is in an elliptical arc shape, the projection of the cutting edge of the first oblique cutting edge 4 on a plane perpendicular to the axis of the first arc-shaped groove 3 is in an arc shape, and the radius of the arc formed by the projection is the same as that of the cylindrical sample 001. One side that lower disc 2 is close to upper disc 1 forms second arc wall 5, is fixed with second wedge sword 6 on the cell wall of second arc wall 5, and upper disc 1 and lower disc 2 are the symmetry setting, and first arc wall 3 and second arc wall 5 are the symmetry setting, and first wedge sword 4 and second wedge sword 6 are the symmetry setting.
In this embodiment, the first wedge edge 4 may be fixed to the groove wall of the first arc groove 3 by welding, and the second wedge edge 6 may be fixed to the groove wall of the second arc groove 5 by welding. Because the first arc-shaped groove 3 and the second arc-shaped groove 5 are arc-shaped structures, the arc-shaped structures of the first oblique cutting edge 4 and the second oblique cutting edge 6 are more stable, the stability of the first oblique cutting edge 4 and the second oblique cutting edge 6 in the process of splitting the cylindrical sample 001 can be improved, the influence of the injection induced fault activation on the indoor test is reduced, and the accuracy of the test result is improved.
Referring to fig. 1 and 4, when in use, the device is matched with a universal testing machine, a cylinder sample 001 is fixed through the universal testing machine, an upper disc 1 and a lower disc 2 are installed on the universal testing machine, the cylinder sample 001 is located between the upper disc 1 and the lower disc 2, then the universal testing machine drives the upper disc 1 and the lower disc 2 to move close to each other, when a first oblique cutting edge 4 and a second oblique cutting edge 6 are respectively contacted with the cylinder sample 001, the first oblique cutting edge 4 and the second oblique cutting edge 6 are respectively attached to the cylinder sample 001, so that the splitting effect on the cylinder sample 001 is improved, the first oblique cutting edge 4 and the second oblique cutting edge 6 are oblique to the cylinder sample 001, cracks generated by the cylinder sample 001 are similar to a dry thermal rock reservoir interrupt layer, and the cracks generated by the cylinder sample 001 can have certain roughness, so that the cracks generated by the cylinder sample 001 are closer to a real state, the influence of an indoor test of injection induction activation is reduced, the accuracy of test results is improved, and therefore, the fault activation mechanism of a fault in a fault activation layer can be further understood.
Because the first oblique cutting edge 4 and the second oblique cutting edge 6 are symmetrically arranged, the shape of a crack of the cylinder sample 001 can be kept in the process of splitting the cylinder sample 001, and the stress stability of the cylinder sample 001 can be kept in the process of splitting the cylinder sample 001 through the symmetrical arrangement.
Referring to fig. 2 and 3, the end surfaces of the upper disc 1 and the lower disc 2 which are close to each other are kept flush, the end surfaces of the first oblique cutting edge 4 are flush with the end surface of the upper disc 1 which is close to the lower disc 2, and the end surfaces of the second oblique cutting edge 6 are flush with the end surface of the lower disc 2 which is close to the upper disc 1, so that the splitting range of the first oblique cutting edge 4 and the second oblique cutting edge 6 to the cylindrical sample 001 can be improved.
In this example, the arc angle range of the first arc-shaped groove 3 is 165 ° to 175 °, the arc angle range of the second arc-shaped groove 5 is 165 ° to 175 °, through this arrangement, when the first oblique cutting edge 4 and the second oblique cutting edge 6 contact the surface of the cylindrical sample 001, the axes of the first arc-shaped groove 3 and the second arc-shaped groove 5 coincide, and the axes of the first arc-shaped groove 3 and the cylindrical sample 001 coincide, because the angle of the first arc-shaped groove 3 and the second arc-shaped groove 5 is in this range, the upper disc 1 and the lower disc 2 have a distance at this time, so that the first oblique cutting edge 4 and the second oblique cutting edge 6 can displace under the action of external force, and the oblique cutting of the cylindrical sample 001 is facilitated.
Referring to fig. 1, a first force application plane 7 is formed on one side of the upper disc 1 away from the lower disc 2, the first force application plane 7 is parallel to the end surface of the upper disc 1 close to the lower disc 2, a second force application plane 8 is formed on one side of the lower disc 2 away from the upper disc 1, the second force application plane 8 is parallel to the end surface of the lower disc 2 close to the upper disc 1, and the first force application plane 7 and the second force application plane 8 are arranged in parallel. In use, a force is applied to the first force application plane 7 of the upper disc 1 by means of the universal testing machine, and is perpendicular to the first force application plane 7, and a force is applied to the second force application plane 8 of the lower disc 2 by means of the universal testing machine, and is perpendicular to the second force application plane 8. The first force application plane 7 and the second force application plane 8 are convenient for the universal testing machine to apply force to the upper disc 1 and the lower disc 2, so that the stability of the cylindrical sample 001 in the splitting process can be improved.
Referring to fig. 2 and 3, four guide posts 9 are fixed on the end surface of the lower disc 2, which is close to the upper disc 1, the axes of the guide posts 9 are perpendicular to the first force application plane 7, the four guide posts 9 are arranged close to four corners of the lower disc 2, four guide holes 10 are formed in the end surface of the upper disc 1, which is close to the lower disc 2, the four guide holes 10 are distributed at the four corners of the upper disc 1, the axes of the guide holes 10 are perpendicular to the second force application plane 8, and the guide posts 9 and the guide holes 10 are in one-to-one fit. In the process of wedge cylinder sample 001, guide post 9 peg graft all the time in guiding hole 10, can make at the in-process of splitting cylinder sample 001, upper disc 1 and lower disc 2 can remain symmetrical state all the time, can improve the stability to the in-process of splitting of cylinder sample 001.
Referring to fig. 2 and 3, it is further required to supplement that the sections of the first oblique cutting edge 4 and the second oblique cutting edge 6 are triangular, in this embodiment, the cutting edge angles of the first oblique cutting edge 4 and the second oblique cutting edge 6 are 30 °, the first oblique cutting edge 4 and the second oblique cutting edge 6 with such structures are convenient for splitting the cylindrical sample 001, and in the process of splitting the cylindrical sample 001, the cracks generated by the cylindrical sample 001 have a certain roughness, so that the cracks generated by the cylindrical sample 001 are closer to the real state, and the accuracy of the subsequent test results is improved.
The embodiment of the invention provides an implementation principle of an inclined splitting crack device for injection induced dry-hot rock fault activation, which comprises the following steps: when the device is used, the device is matched with a universal testing machine, the cylindrical sample 001 is fixed through the universal testing machine, the upper disc 1 and the lower disc 2 are installed on the universal testing machine, the cylindrical sample 001 is located between the upper disc 1 and the lower disc 2, then the universal testing machine drives the upper disc 1 and the lower disc 2 to move close to each other, when the first oblique cutting edge 4 and the second oblique cutting edge 6 are respectively contacted with the cylindrical sample 001, the first oblique cutting edge 4 and the second oblique cutting edge 6 are respectively attached to the cylindrical sample 001, so that the splitting effect on the cylindrical sample 001 is improved, the first oblique cutting edge 4 and the second oblique cutting edge 6 are oblique to the cylindrical sample 001, cracks generated by the cylindrical sample 001 are similar to a dry thermal rock reservoir breaking layer, the cracks generated by the cylindrical sample 001 can have certain roughness, the cracks generated by the cylindrical sample 001 are closer to a real state, the influence of an injection induced fault activation indoor test is reduced, the accuracy of test results is improved, and therefore the induced fault activation mechanism in the modification of dry thermal rock reservoir can be further understood.
The foregoing description of the preferred embodiments of the invention is not intended to limit the invention to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the invention are intended to be included within the scope of the invention.
Claims (10)
1. A slope splitting crack device for injecting induced dry-hot rock fault activation, its characterized in that includes upper disc (1) and lower disc (2), upper disc (1) is close to one side of lower disc (2) is provided with first oblique cutting edge (4), lower disc (2) is close to one side of upper disc (1) is provided with second oblique cutting edge (6), first oblique cutting edge (4) with second oblique cutting edge (6) are used for oblique to cylinder sample (001), the axis slope setting of first oblique cutting edge (4) and cylinder sample (001), the axis slope setting of second oblique cutting edge (6) and cylinder sample (001).
2. The oblique fracture splitting device for injection induced dry thermal rock fault activation according to claim 1, wherein the cutting edge of the first oblique cutting edge (4) is arc-shaped and the cutting edge of the second oblique cutting edge (6) is arc-shaped.
3. The oblique fracture splitting device for injection induced dry thermal rock fault activation according to claim 2, wherein a first arc-shaped groove (3) is formed on one side of the upper disc (1) close to the lower disc (2), the first oblique cutting edge (4) is fixed on the groove wall of the first arc-shaped groove (3), the axes of the first oblique cutting edge (4) and the first arc-shaped groove (3) are obliquely arranged, a second arc-shaped groove (5) is formed on one side of the lower disc (2) close to the upper disc (1), the second oblique cutting edge (6) is fixed on the groove wall of the second arc-shaped groove (5), the axes of the second oblique cutting edge (6) and the second arc-shaped groove (5) are obliquely arranged, and the axes of the first arc-shaped groove (3) and the axis of the second arc-shaped groove (5) are respectively and parallelly arranged with the axis of the cylindrical sample (001).
4. A oblique fracture splitting device for injection induced dry thermal rock fault activation according to claim 3, characterized in that the arc angle of the first arc-shaped groove (3) ranges from 165 ° to 175 °, and the arc angle of the second arc-shaped groove (5) ranges from 165 ° to 175 °.
5. An oblique fracture splitting device for injection induced dry thermal rock fracture activation as claimed in claim 3 or 4, wherein the two end faces of the first oblique cutting edge (4) are flush with the end face of the upper disc (1) adjacent to the lower disc (2), and the two end faces of the second oblique cutting edge (6) are flush with the end face of the lower disc (2) adjacent to the upper disc (1).
6. A oblique fracture device for injection induced dry thermal rock fracture activation according to claim 2, characterized in that the first oblique cutting edge (4) and the second oblique cutting edge (6) are symmetrically arranged.
7. An oblique fracture device for injection induced dry thermal rock fracture activation according to claim 2, characterized in that the first oblique cutting edge (4) and the second oblique cutting edge (6) are attached to each other with the cylindrical sample (001) when the first oblique cutting edge (4) and the second oblique cutting edge (6) are in contact with the cylindrical sample (001), respectively.
8. An oblique fracture splitting device for injection-induced dry thermal rock fracture activation according to claim 1, wherein a side of the upper disc (1) remote from the lower disc (2) forms a first force application plane (7), a side of the lower disc (2) remote from the upper disc (1) forms a second force application plane (8), and the first force application plane (7) and the second force application plane (8) are arranged in parallel.
9. The oblique fracture splitting device for injection induced dry thermal rock fracture activation according to claim 1, wherein the cross section of the first oblique cutting edge (4) is triangular, and the cross section of the second oblique cutting edge (6) is triangular.
10. The oblique fracture splitting device for injection induced dry-hot rock fault activation according to claim 1, wherein a plurality of guide posts (9) are arranged on one side of the lower disc (2) close to the upper disc (1), a plurality of guide holes (10) are formed on one side of the upper disc (1) close to the lower disc (2), and the guide posts (9) and the guide holes (10) are in one-to-one fit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311767581.7A CN117804859B (en) | 2023-12-21 | 2023-12-21 | Oblique splitting crack device for injection induced dry-hot rock fault activation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311767581.7A CN117804859B (en) | 2023-12-21 | 2023-12-21 | Oblique splitting crack device for injection induced dry-hot rock fault activation |
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| CN117804859B CN117804859B (en) | 2024-06-18 |
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| CN109781485A (en) * | 2019-01-31 | 2019-05-21 | 中国矿业大学 | A kind of splitting device and splitting method generated for the coarse fissure-plane of rock sample |
| GB202005194D0 (en) * | 2019-04-10 | 2020-05-20 | Univ Guangxi | Cylindrical concrete specimen splitting device and splitting method |
| CN113447331A (en) * | 2021-07-05 | 2021-09-28 | 长沙理工大学 | Rock splitting device with controllable splitting surface and splitting method |
| CN114354305A (en) * | 2021-12-09 | 2022-04-15 | 三峡大学 | Method for manufacturing curved surface type joint in rock sample |
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2023
- 2023-12-21 CN CN202311767581.7A patent/CN117804859B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109781485A (en) * | 2019-01-31 | 2019-05-21 | 中国矿业大学 | A kind of splitting device and splitting method generated for the coarse fissure-plane of rock sample |
| GB202005194D0 (en) * | 2019-04-10 | 2020-05-20 | Univ Guangxi | Cylindrical concrete specimen splitting device and splitting method |
| CN113447331A (en) * | 2021-07-05 | 2021-09-28 | 长沙理工大学 | Rock splitting device with controllable splitting surface and splitting method |
| CN114354305A (en) * | 2021-12-09 | 2022-04-15 | 三峡大学 | Method for manufacturing curved surface type joint in rock sample |
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