A pseudo-triaxial rock mechanics testing device

Abstract

The application discloses a kind of quasi-triaxial rock mechanics testing device, belong to oil and gas exploitation technical field.It includes: the confining pressure oil is stored in confining pressure chamber, and the confining pressure chamber is in full oil state;Delivery component, the delivery component is used to send experimental sample to the confining pressure chamber;Liquid level adjusting component, the liquid level adjusting component is connected with the confining pressure chamber for adjusting the oil liquid saturation state of confining pressure oil in the confining pressure chamber;Pressure increasing component, the pressure increasing component is connected with the confining pressure chamber for applying confining pressure to the sample in the confining pressure chamber;Pore pressure adjusting component, the pore pressure adjusting component is connected with experimental sample for applying pore pressure to experimental sample;Temperature adjusting assembly, the temperature adjusting assembly is connected with the confining pressure chamber for adjusting the temperature of confining pressure oil in the confining pressure chamber.The confining pressure chamber is set to store confining pressure oil, without oil injection before each test, oil discharge after test, avoid the time consumption of injection / oil discharge, effectively improve the test efficiency.

Description

Technical Field

[0001] This invention relates to the field of oil and gas extraction technology, and specifically to a pseudo-triaxial rock mechanics testing device. Background Technology

[0002] In the process of oil and gas exploration and development, rock mechanics instruments are often used to test the elastic modulus, Poisson's ratio and other mechanical parameters of the formation rocks, so as to provide important basic data for oil and gas exploration and development.

[0003] In existing related technologies, such as Figures 1 to 3 As shown, the confining pressure chamber 01 of the rock mechanics instrument is covered by the upper pressure head 02, the heat shrinkable tube 03, and the lower pressure head 04. The confining pressure chamber 01 has no bottom surface. The lower edge of the confining pressure chamber 01 is in sealed contact with the upper surface of the base. The first end of the upper pressure head 02 passes through the upper end surface of the confining pressure chamber 01 and then contacts the first end of the sample. The first end of the lower pressure head 04 contacts the second end of the sample. The first end of the upper pressure head 02, the sample, and the first end of the lower pressure head 04 are all located inside the heat shrinkable tube 03. The second end of the lower pressure head 04 is connected to the upper surface of the base.

[0004] However, in existing related technologies, the confining pressure chamber 01 has no bottom surface. Only after the confining pressure chamber 01 falls to the point where its lower edge makes sealing contact with the upper surface of the base, forming a closed space, can confining pressure oil be injected into the confining pressure chamber 01 before the test can begin. After the test, the confining pressure oil must be drained before the sample can be removed. As a result, the injection / draining of oil consumes a lot of time, resulting in low testing efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a pseudo-triaxial rock mechanics testing device to solve the problem that existing rock mechanics instruments have long oil injection / drainage times, resulting in low testing efficiency.

[0006] The technical solution of the present invention to solve the above-mentioned technical problems is as follows:

[0007] This invention provides a pseudo-triaxial rock mechanics testing device, comprising:

[0008] A confining pressure chamber, wherein the confining pressure chamber stores confining pressure oil and is in a full oil state;

[0009] A delivery component, the delivery component being used to deliver experimental samples into the confining pressure chamber;

[0010] A liquid level regulating component, which is connected to the confining pressure chamber and is used to regulate the saturation state of the confining pressure oil in the confining pressure chamber;

[0011] A pressurizing component, connected to the confining pressure chamber, is used to apply confining pressure to the sample in the confining pressure chamber;

[0012] A pore pressure regulating component, which is connected to the experimental sample to apply pore pressure to the experimental sample;

[0013] A temperature regulating component, which is connected to the confining pressure chamber, is used to regulate the temperature of the confining pressure oil in the confining pressure chamber.

[0014] Furthermore, in the aforementioned pseudo-triaxial rock mechanics testing device, the confining pressure chamber is composed of a bottom plate and multiple side plates, with the multiple side plates arranged on the bottom plate to form a space for storing confining pressure oil.

[0015] Furthermore, in the aforementioned pseudo-triaxial rock mechanics testing device, the delivery component includes: a top plate, an upper pressure head, a lower pressure head, and a rubber sleeve;

[0016] The top plate is located at the top of the confining pressure chamber, and a sample delivery hole for the experimental sample to enter the confining pressure chamber is provided on the top plate.

[0017] The upper pressure head is located above the outside of the confining pressure chamber, and the lower pressure head is located at the bottom inside the confining pressure chamber. The upper pressure head passes through the sample delivery hole and enters the confining pressure chamber to continue pushing the experimental sample downward to contact the lower pressure head and achieve sealing.

[0018] The rubber sleeve is disposed in the confining pressure chamber. One end of the rubber sleeve is connected to the bottom end of the top plate and communicates with the sample delivery hole, and the other end of the rubber sleeve is connected to the lower pressure head.

[0019] Furthermore, in the aforementioned pseudo-triaxial rock mechanics testing device, the liquid level regulating component includes a liquid level regulating tank and a liquid level control valve;

[0020] The liquid level regulating tank is connected to the top plate through a liquid regulating pipeline, and the liquid level control valve is installed on the liquid regulating pipeline for oil saturation.

[0021] Furthermore, in the aforementioned pseudo-triaxial rock mechanics testing device, the pressurization component includes a confining pressure booster, which is connected to the confining pressure chamber via a pressurization pipeline.

[0022] Furthermore, in the aforementioned pseudo-triaxial rock mechanics testing device, the pore pressure adjustment component includes: a sealing element and a pore pressure controller.

[0023] The upper end of the experimental sample is connected to the sealing component via a pore pressure pipeline, and the lower end of the experimental sample is connected to the pore pressure controller via a pore air pressure pipeline.

[0024] Furthermore, in the aforementioned pseudo-triaxial rock mechanics testing device, the temperature control component includes:

[0025] A heating element, disposed outside the confining pressure chamber, is used to heat the confining pressure oil in the confining pressure chamber;

[0026] A heat exchange component, which is connected to the confining pressure chamber for heat exchange of the confining pressure oil in the confining pressure chamber.

[0027] Furthermore, in the aforementioned pseudo-triaxial rock mechanics testing device, the heating component includes a temperature controller, which is sleeved on the outer side wall of the confining pressure chamber.

[0028] Furthermore, in the aforementioned pseudo-triaxial rock mechanics testing device, the heat exchange components include: a heat exchange coil, a water storage tank, an inlet valve, and an outlet valve;

[0029] The heat exchange coil is arranged in a ring inside the confining pressure chamber. The water inlet of the heat exchange coil is connected to the water outlet of the water storage tank through a water inlet pipe, and the water outlet of the heat exchange coil is connected to the water inlet of the water storage tank through a water outlet pipe.

[0030] The inlet valve is installed on the inlet pipe, and the outlet valve is installed on the outlet pipe.

[0031] Furthermore, in the aforementioned pseudo-triaxial rock mechanics testing device, the water storage tank includes: a tank body, the tank body being divided into a cold source chamber and a heat source chamber, the cold source chamber and the heat source chamber being connected by a connecting valve;

[0032] The outlet of the water storage tank is connected to the cold source chamber, and the inlet of the water storage tank is connected to the heat source chamber.

[0033] The present invention has the following beneficial effects:

[0034] The pseudo-triaxial rock mechanics testing device provided by this invention delivers samples via a delivery component, regulates the saturation state of the confining pressure oil via a level adjustment component, applies confining pressure to the sample via a pressurization component, applies pore pressure to the experimental sample via a pore pressure adjustment component, and regulates the temperature of the confining pressure oil via a temperature adjustment component, thereby completing the rock mechanics test of the sample. This invention configures the confining pressure chamber to store the confining pressure oil, eliminating the need for oil filling before each test and draining afterward, thus avoiding the time-consuming process of oil filling / draining and effectively improving testing efficiency. Attached Figure Description

[0035] The accompanying drawings, which are included to provide a further understanding of embodiments of the invention and form part of this application, do not constitute a limitation thereof. In the drawings:

[0036] Figure 1 This is a schematic diagram of the rock mechanics instrument in the background art of this invention;

[0037] Figure 2 This is a schematic diagram of the connection between the upper and lower pressure heads in the background art of this invention;

[0038] Figure 3 This is a schematic diagram of the structure of the heat shrink tubing in the background art of this invention;

[0039] Figure 4 This is a schematic diagram of the structure of the pseudo-triaxial rock mechanics testing device in an embodiment of the present invention;

[0040] Figure 5 This is a schematic diagram of a partial structure of the pseudo-triaxial rock mechanics testing device in an embodiment of the present invention. Figure 1 ;

[0041] Figure 6 This is a schematic diagram of a partial structure of the pseudo-triaxial rock mechanics testing device in an embodiment of the present invention. Figure 2 ;

[0042] Figure 7 This is a schematic diagram of a partial structure of the pseudo-triaxial rock mechanics testing device in an embodiment of the present invention. Figure 3 ;

[0043] Figure 8 This is a schematic diagram of a partial structure of the pseudo-triaxial rock mechanics testing device in an embodiment of the present invention. Figure 4 ;

[0044] Figure 9 This is a schematic diagram of the water storage tank in the pseudo-triaxial rock mechanics testing device in an embodiment of the present invention.

[0045] The attached diagram shows the markings and corresponding component names:

[0046] In the diagram: 01-Containing pressure chamber, 02-Upper pressure head, 03-Heat shrink tubing, 04-Lower pressure head;

[0047] 10-Containing pressure chamber, 20-Feeding component, 21-Top plate, 22-Upper pressure head, 23-Lower pressure head, 24-Rubber sleeve, 25-Sample feeding hole, 30-Level regulating component, 31-Level regulating tank, 32-Level control valve, 40-Pressure boosting component, 41-Containing pressure booster, 50-Orifice pressure regulating component, 51-Sealing component, 52-Orifice pressure controller, 60-Temperature regulating component, 61-Temperature controller, 62-Heat exchange coil, 63-Water storage tank, 631-Box body, 632-Cold source chamber, 633-Heat source chamber, 634-Connecting valve, 64-Inlet valve, 65-Outlet valve. Detailed Implementation

[0048] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0049] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0050] Example

[0051] Please refer to Figure 4-9 This invention provides a pseudo-triaxial rock mechanics testing device, comprising:

[0052] Confining pressure chamber 10, which stores confining pressure oil and is in a full oil state;

[0053] Delivery component 20, which is used to deliver experimental samples into the confining pressure chamber 10;

[0054] A liquid level regulating component 30 is connected to the confining pressure chamber 10 and is used to regulate the saturation state of the confining pressure oil in the confining pressure chamber 10.

[0055] A pressurizing component 40 is connected to the confining pressure chamber 10 and is used to apply confining pressure to the sample in the confining pressure chamber 10.

[0056] A pore pressure regulating component 50 is connected to the experimental sample and is used to apply pore pressure to the experimental sample.

[0057] Temperature regulating component 60, which is connected to the confining pressure chamber 10, is used to regulate the temperature of the confining pressure oil in the confining pressure chamber 10.

[0058] The pseudo-triaxial rock mechanics testing device provided by this invention delivers samples via a delivery component 20, regulates the saturation state of the confining pressure oil via a level regulating component 30, applies confining pressure to the sample via a pressurizing component 40, applies pore pressure to the experimental sample via a pore pressure regulating component 50, and regulates the temperature of the confining pressure oil via a temperature regulating component, thereby completing the rock mechanics test of the sample. This invention configures the confining pressure chamber 10 to store confining pressure oil, eliminating the need for oil filling before each test and draining afterward, thus avoiding the time wasted on oil filling / draining and effectively improving testing efficiency.

[0059] In some feasible embodiments, the confining pressure chamber 10 consists of a bottom plate and a plurality of side plates, the plurality of side plates being disposed on the bottom plate to form a space for storing confining pressure oil.

[0060] The confining pressure chamber 10 consists of a bottom plate and side plates. The bottom edge of the top plate 21 is connected to the top of the confining pressure chamber 10. The confining pressure chamber 10 forms a space that can store confining pressure oil. During the test, the confining pressure chamber 10 can always be full of oil, eliminating the need to add oil before each test and drain oil after each test. This avoids the time wasted on adding / draining oil and effectively improves the test efficiency.

[0061] In some feasible implementations, the delivery component 20 includes: a top plate 21, an upper pressure head 22, a lower pressure head 23, and a rubber sleeve 24;

[0062] The top plate 21 is located at the top of the confining pressure chamber 10, and a sample delivery hole 25 for the experimental sample to enter the confining pressure chamber 10 is provided on the top plate 21.

[0063] The upper pressure head 22 is located above the outside of the confining pressure chamber 10, and the lower pressure head 23 is located at the bottom inside the confining pressure chamber 10. The upper pressure head 22 passes through the sample delivery hole 25 and enters the confining pressure chamber 10 to continue pushing the experimental sample downward to contact the lower pressure head 23 to achieve sealing.

[0064] The rubber sleeve 24 is disposed inside the confining pressure chamber 10. One end of the rubber sleeve 24 is connected to the bottom end of the top plate 21 and communicates with the sample delivery hole 25. The other end of the rubber sleeve 24 is connected to the lower pressure head 23.

[0065] In the delivery component 20, the upper pressure head 22 and the lower pressure head 23 are matched. The reciprocating motion of the upper pressure head 22 is achieved by an axial piston rod connected to the upper pressure head 22. In other embodiments, the axial piston rod can also be achieved by other telescopic components. The size and dimensions of the upper pressure head 22 and the lower pressure head 23 can be reasonably adjusted according to the size and shape of the experimental sample to achieve good contact between the upper pressure head 22 and the lower pressure head 23 and the experimental sample.

[0066] In practical use, the rubber sleeve 24 is fixedly connected between the top plate 21 and the lower pressure head 23 by a fastener. This eliminates the need to remove or reinstall the rubber sleeve 24 each time a sample is taken out or placed, thus avoiding manual sample sealing and improving testing efficiency. The rubber sleeve 24 is made of a special material that meets laboratory requirements and can be used repeatedly for a long time. The connection between the rubber sleeve 24 and the top plate 21, as well as between the rubber sleeve 24 and the lower pressure head 23, is firm and well-sealed, isolating the sample from the confining pressure oil. Furthermore, after the rubber sleeve 24 is in contact with the experimental sample, it can withstand high pressure and high temperature, and possesses a certain degree of toughness and elasticity to ensure that the sample is not damaged.

[0067] In principle, the present invention does not impose any particular restrictions on the specific selection of the aperture of the sample delivery hole 25. Those skilled in the art can select and adjust it according to the application situation to adapt to the delivery of samples of various sizes.

[0068] In principle, this invention does not impose any particular restrictions on the specific selection of the diameter of the rubber sleeve 24. Those skilled in the art can select and adjust it according to the application to accommodate samples of various sizes. To facilitate processing and meet sample size requirements, the diameter of the rubber sleeve 24 is set to be the same as the diameter of the sample delivery hole 25.

[0069] In this invention, the rubber sleeve 24 is selected as an inflatable and deflated type, which can be inflated to make it bulge and fit against the hole wall of the sample storage hole. After the inflatable and deflated rubber sleeve 24 bulges, it is also convenient to put the sample into the inflatable and deflated rubber sleeve 24.

[0070] In some feasible embodiments, the liquid level regulating component 30 includes a liquid level regulating tank 31 and a liquid level control valve 32;

[0071] The liquid level regulating tank 31 is connected to the top plate 21 through the liquid regulating pipeline, and the liquid level control valve 32 is installed on the liquid regulating pipeline to regulate the overflow of the confining pressure oil.

[0072] Removing the sample from the sleeve 24 frees up space, increasing the oil storage space within the confining pressure chamber 10. Conversely, inserting the sample into the sleeve 24 reduces this space. In other words, the oil storage space within the confining pressure chamber 10 changes with sample removal and insertion. To regulate the amount of confining oil within the confining pressure chamber 10 and ensure it remains full, the level control valve 32 regulates the oil level, maintaining a saturated but unpressurized state. The level control valve 32 also regulates the oil pressure within the confining pressure chamber 10 to prevent pressurization due to the expansion of the sleeve 24 during core insertion and the placement of the pressure head 22, or to prevent the sleeve 24 from failing to expand, thus preventing core insertion and causing oil overflow and pressure release.

[0073] During the process of placing the sample into the sleeve 24, the liquid level control valve 32 opens, and confining pressure oil in the confining pressure chamber 10 overflows into the liquid level regulating tank 31 through the liquid adjustment pipeline. During the process of removing the sample from the sleeve 24, the liquid level control valve 32 opens, and confining pressure oil in the liquid level regulating tank 31 flows back into the confining pressure chamber 10 through the liquid adjustment pipeline. In this embodiment, the liquid level control valve 32 can be a needle valve, a manual valve, or an automatic valve, because the liquid level control valve 32 can be opened or closed manually, or it can be opened or closed by remote control or program control. During the sample handling process, the liquid level control valve 32 can be opened to automatically adjust the amount of confining pressure oil in the confining pressure chamber 10. During the test, the liquid level control valve 32 can be closed to facilitate the formation of a sealed space.

[0074] In some feasible embodiments, the pressurization component 40 includes a confining pressure booster 41, which is connected to the confining pressure chamber 10 via a pressurization pipeline.

[0075] The confining pressure booster 41 can apply confining pressure to the sample in the confining pressure chamber 10, which can provide a confining pressure environment for the sample and improve the accuracy of the test.

[0076] In some feasible embodiments, the pore pressure regulating component 50 includes: a sealing component 51 and a pore pressure controller 52.

[0077] The upper end of the experimental sample is connected to the sealing element 51 via a pore pressure line, and the lower end of the experimental sample is connected to the pore pressure controller 52 via a pore air pressure line. With the lower end of the experimental sample connected to the sealing element and the upper end connected to the sealing element, pore pressure is applied from bottom to top via the controller.

[0078] In some feasible implementations, the temperature regulating component 60 includes:

[0079] A heating element is disposed outside the confining pressure chamber 10 for heating the confining pressure oil in the confining pressure chamber 10;

[0080] A heat exchange component is connected to the confining pressure chamber 10 for heat exchange of the confining pressure oil in the confining pressure chamber 10.

[0081] In some feasible embodiments, the heating component includes a temperature controller 61, which is sleeved on the outer wall of the confining chamber 10.

[0082] Heating the confining oil through heating facilitates the simulation of the sample being in a formation temperature environment. The temperature control unit (61) is a combination of a heater and a controller; the controller controls the heater to achieve the heating effect.

[0083] In some feasible implementations, the heat exchange components include: a heat exchange coil 62, a water storage tank 63, an inlet valve 64, and an outlet valve 65;

[0084] The heat exchange coil 62 is arranged around the inner side of the confining pressure chamber 10. The water inlet end of the heat exchange coil 62 is connected to the water outlet of the water storage tank 63 through a water inlet pipe, and the water outlet end of the heat exchange coil 62 is connected to the water inlet of the water storage tank 63 through a water outlet pipe.

[0085] The inlet valve 64 is installed on the inlet pipe, and the outlet valve 65 is installed on the outlet pipe.

[0086] Heating of the confining oil is achieved through heat exchange, which facilitates the simulation of the sample being in a formation temperature environment.

[0087] In this embodiment, the heat exchange coil 62 can be set to be relatively long, so that the part of the heat exchange coil 62 located inside the confining pressure chamber 10 can surround the rubber sleeve 24. Furthermore, the curved part of the part of the heat exchange coil 62 located inside the confining pressure chamber 10 can contact the inner wall of the confining pressure chamber 10. This allows the heat exchange coil 62 entering the confining pressure chamber 10 to be long enough, so that the heat exchange coil 62 can effectively play its role in regulating the temperature of the confining pressure oil.

[0088] In some feasible embodiments, the water storage tank 63 includes: a tank body 631, which is divided into a cold source chamber 632 and a heat source chamber 633, and the cold source chamber 632 and the heat source chamber 633 are connected by a connecting valve 634;

[0089] The outlet of the water storage tank 63 is connected to the cold source chamber 632, and the inlet of the water storage tank 63 is connected to the heat source chamber 633.

[0090] When valve 634 is connected to cold source chamber 632, cold water in cold source chamber 632 flows out through the outlet of water storage tank 63 to heat exchange coil 62 to exchange heat and cool the confining pressure oil; when the fourth valve is connected to heat source chamber 633, hot water in heat source chamber 633 flows out through the inlet of water storage tank 63 to heat exchange coil 62 to exchange heat and heat the confining pressure oil.

[0091] The temperature regulating component 60 provided by this invention can not only rapidly heat up the confining pressure oil, but also rapidly cool it down, improving the operability of the test. Because it can achieve rapid cooling, it avoids the time wasted waiting for the oil to cool down, facilitating tests at any temperature and improving test efficiency.

[0092] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A pseudo-triaxial rock mechanics testing device, characterized in that, include: A confining pressure chamber (10) is provided, which stores confining pressure oil and is in a full oil state. Delivery component (20) is used to deliver the experimental sample into the confining pressure chamber (10); A liquid level regulating component (30) is connected to the confining pressure chamber (10) for regulating the saturation state of the confining pressure oil in the confining pressure chamber (10); A pressurizing component (40) is connected to the confining pressure chamber (10) for applying confining pressure to the sample in the confining pressure chamber (10); A pore pressure regulating component (50) is connected to the experimental sample to apply pore pressure to the experimental sample; Temperature regulating component (60), which is connected to the confining pressure chamber (10) for regulating the temperature of the confining pressure oil in the confining pressure chamber (10); The delivery component (20) includes: a top plate (21), an upper pressure head (22), a lower pressure head (23), and a rubber sleeve (24). The top plate (21) is located at the top of the confining pressure chamber (10), and a sample delivery hole (25) for the experimental sample to enter the confining pressure chamber (10) is provided on the top plate (21). The upper pressure head (22) is located above the outside of the confining pressure chamber (10), and the lower pressure head (23) is located at the bottom inside the confining pressure chamber (10). The upper pressure head (22) passes through the sample delivery hole (25) and enters the confining pressure chamber (10) to continue pushing the experimental sample downward to contact the lower pressure head (23) to achieve sealing. The rubber sleeve (24) is disposed inside the confining pressure chamber (10). One end of the rubber sleeve (24) is connected to the bottom end of the top plate (21) and communicates with the sample delivery hole (25). The other end of the rubber sleeve (24) is connected to the lower pressure head (23).

2. The pseudo-triaxial rock mechanics testing device according to claim 1, characterized in that, The confining pressure chamber (10) consists of a bottom plate and multiple side plates, with the multiple side plates arranged on the bottom plate to form a space for storing confining pressure oil.

3. The pseudo-triaxial rock mechanics testing device according to claim 1, characterized in that, The liquid level regulating component (30) includes: a liquid level regulating tank (31) and a liquid level control valve (32); The liquid level regulating tank (31) is connected to the top plate (10) through the liquid regulating pipeline, and the liquid level control valve (32) is installed on the liquid regulating pipeline to regulate the overflow of the confining pressure oil.

4. The pseudo-triaxial rock mechanics testing device according to claim 1, characterized in that, The pressurization component (40) includes a confining pressure booster (41), which is connected to the confining pressure chamber (10) via a pressurization pipeline.

5. The pseudo-triaxial rock mechanics testing device according to claim 1, characterized in that, The pore pressure regulating component (50) includes: a plugging component (51) and a pore pressure controller (52). The upper end of the experimental sample is connected to the sealing component (51) via a pore pressure pipeline, and the lower end of the experimental sample is connected to the pore pressure controller (52) via a pore air pressure pipeline.

6. The pseudo-triaxial rock mechanics testing device according to claim 1, characterized in that, The temperature regulating component (60) includes: A heating element is disposed outside the confining pressure chamber (10) for heating the confining pressure oil in the confining pressure chamber (10); A heat exchange component is connected to the confining pressure chamber (10) for heat exchange of the confining pressure oil in the confining pressure chamber (10).

7. The pseudo-triaxial rock mechanics testing device according to claim 6, characterized in that, The heating component includes a temperature controller (61), which is sleeved on the outer wall of the confining chamber (10).

8. The pseudo-triaxial rock mechanics testing device according to claim 6, characterized in that, The heat exchange components include: heat exchange coil (62), water storage tank (63), water inlet valve (64), and water outlet valve (65). The heat exchange coil (62) is arranged around the inner side of the confining pressure chamber (10). The water inlet of the heat exchange coil (62) is connected to the water outlet of the water storage tank (63) through the water inlet pipe, and the water outlet of the heat exchange coil (62) is connected to the water inlet of the water storage tank (63) through the water outlet pipe. The inlet valve (64) is installed on the inlet pipe, and the outlet valve (65) is installed on the outlet pipe.

9. The pseudo-triaxial rock mechanics testing device according to claim 8, characterized in that, The water storage tank (63) includes: a tank body (631), which is divided into a cold source chamber (632) and a heat source chamber (633), and the cold source chamber (632) and the heat source chamber (633) are connected by a connecting valve (634); The outlet of the water storage tank (63) is connected to the cold source chamber (632), and the inlet of the water storage tank (63) is connected to the heat source chamber (633).

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