Quasi-triaxial rock mechanical testing device

Abstract

The invention discloses a quasi-triaxial rock mechanical testing device, and belongs to the technical field of oil and gas exploitation. The confining pressure chamber stores confining pressure oil, and the confining pressure chamber is in a full oil state; the delivery part is used for delivering an experimental sample into the confining pressure chamber; the liquid level adjusting part is connected with the confining pressure chamber and used for adjusting the oil saturation state of confining pressure oil in the confining pressure chamber; the pressurizing component is connected with the confining pressure chamber and is used for applying confining pressure to a sample in the confining pressure chamber; the pore pressure adjusting part is connected with the experimental sample and is used for applying pore pressure to the experimental sample; the temperature adjusting assembly is connected with the confining pressure chamber and used for adjusting the temperature of confining pressure oil in the confining pressure chamber. The confining pressure chamber is arranged to be capable of storing confining pressure oil, oil injection before each test and oil discharge after the test are not needed, the time consumption of oil injection / discharge is avoided, and the test efficiency is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of oil and gas exploitation, and in particular to a pseudo-triaxial rock mechanics testing device. Background Art

[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 formation rocks to provide important basic data for oil and gas exploration and development.

[0003] In the existing related technologies, such as Figures 1 to 3 As shown, the confining pressure chamber 01 of the rock mechanics instrument is covered outside the upper pressure head 02, the heat shrinkable rubber tube 03 and the lower pressure head 04, the confining pressure chamber 01 has no bottom surface, the lower end edge of the confining pressure chamber 01 is in sealing 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 contacts with the first end of the sample, the first end of the lower pressure head 04 contacts with 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 in the heat shrinkable rubber tube 03, and the second end of the lower pressure head 04 is connected to the upper surface of the base.

[0004] However, since the confining pressure chamber 01 in the prior art has no bottom surface, the confining pressure chamber 01 can only be filled with confining pressure oil after the lower edge of the confining pressure chamber 01 is in sealing contact with the upper surface of the base to form a closed space, and then the test can be started. After the test, the confining pressure oil needs to be drained before the sample can be taken out. Therefore, the injection / draining of oil will consume a lot of time, and the test efficiency is low. Summary of the invention

[0005] The purpose of the present invention is to provide a quasi-triaxial rock mechanics testing device to solve the problem that the injection / drainage of oil during the test of the existing rock mechanics instrument takes a long time, resulting in low test efficiency.

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

[0007] The present invention provides a quasi-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, which is used to deliver the experimental sample into the confining pressure chamber;

[0010] a liquid level regulating component, the liquid level regulating component being connected to the confining pressure chamber and being used for regulating the oil saturation state of the confining pressure oil in the confining pressure chamber;

[0011] a pressurizing component, the pressurizing component being connected to the confining pressure chamber and being used to apply confining pressure to the sample in the confining pressure chamber;

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

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

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

[0015] Further, in the 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 arranged at the top of the confining pressure chamber, and a sample delivery hole for the experimental sample to enter the confining pressure chamber is opened on the top plate;

[0017] The upper pressure head is arranged above the outer side of the confined pressure chamber, and the lower pressure head is arranged at the inner bottom of the confined pressure chamber. The upper pressure head passes through the sample delivery hole and enters the confined pressure chamber to continue to push the experimental sample downward to contact with the lower pressure head to achieve sealing;

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

[0019] Further, in the 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 communicated with the top plate through a liquid regulating pipeline, and the liquid level control valve is arranged on the regulating liquid pipeline for oil saturation state.

[0021] Furthermore, in the pseudo-triaxial rock mechanics testing device, the pressurizing component includes a confining pressure booster, and the confining pressure booster is connected to the confining pressure chamber through a boosting pipeline.

[0022] Furthermore, in the pseudo-triaxial rock mechanics testing device, the pore pressure regulating component includes: a plugging member and a pore pressure controller,

[0023] The upper end of the experimental sample is connected to the plugging member through a bore pressure pipeline, and the lower end of the experimental sample is connected to the bore pressure controller through a bore air pressure pipeline.

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

[0025] A heating component, the heating component is arranged outside the confining pressure chamber and is used to heat the confining pressure oil in the confining pressure chamber;

[0026] A heat exchange component is connected to the confining pressure chamber and is used for exchanging heat with the confining pressure oil in the confining pressure chamber.

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

[0028] Further, in the pseudo-triaxial rock mechanics testing device, the heat exchange component includes: a heat exchange coil, a water storage tank, a water inlet valve and a water outlet valve;

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

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

[0031] Furthermore, in the pseudo-triaxial rock mechanics testing device, the water storage tank comprises: a box body, the box body is divided into a cold source chamber and a hot source chamber, and the cold source chamber and the hot source chamber are connected through a connecting valve;

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

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

[0034] The quasi-triaxial rock mechanics testing device provided by the present invention realizes sample delivery through a delivery component, realizes oil saturation state adjustment of the confining pressure oil through a liquid level adjustment component, applies confining pressure to the sample through a pressurization component, applies pore pressure to the experimental sample through a pore pressure adjustment component, and realizes temperature adjustment of the confining pressure oil through a temperature adjustment component, thereby completing the rock mechanics test of the sample. The present invention sets the confining pressure chamber to store confining pressure oil, and does not need to fill oil before each test and drain oil after the test, thereby avoiding the time consumption of filling / draining oil and effectively improving the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The drawings described herein are used to provide a further understanding of the embodiments of the present invention, constitute a part of this application, and do not constitute a limitation of the embodiments of the present invention. In the drawings:

[0036] Figure 1 It is a structural schematic diagram of a rock mechanics instrument in the background technology of the present invention;

[0037] Figure 2 It is a schematic diagram of the connection of the upper and lower pressure heads in the background technology of the present invention;

[0038] Figure 3 It is a schematic diagram of the structure of the heat shrinkable rubber tube in the background technology of the present invention;

[0039] Figure 4 It is a schematic structural diagram of a pseudo-triaxial rock mechanics testing device according to an embodiment of the present invention;

[0040] Figure 5 Schematic diagram of the local structure of the pseudo triaxial rock mechanics testing device in the embodiment of the present invention Figure 1 ;

[0041] Figure 6 Schematic diagram of the local structure of the pseudo triaxial rock mechanics testing device in the embodiment of the present invention Figure 2 ;

[0042] Figure 7 Schematic diagram of the local structure of the pseudo triaxial rock mechanics testing device in the embodiment of the present invention Figure 3 ;

[0043] Figure 8 Schematic diagram of the local structure of the pseudo triaxial rock mechanics testing device in the embodiment of the present invention Figure 4 ;

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

[0045] Marks and corresponding parts names in the attached drawings:

[0046] In the figure: 01-confining pressure chamber, 02-upper pressure head, 03-heat shrink tube, 04-lower pressure head;

[0047] 10-confining pressure chamber, 20-delivery component, 21-top plate, 22-upper pressure head, 23-lower pressure head, 24-rubber sleeve, 25-sample delivery hole, 30-liquid level adjustment component, 31-liquid level adjustment tank, 32-liquid level control valve, 40-boosting component, 41-confining pressure booster, 50-pore pressure adjustment component, 51-sealing part, 52-pore pressure controller, 60-temperature adjustment component, 61-temperature rise controller, 62-heat exchange coil, 63-water storage tank, 631-tank, 632-cold source chamber, 633-heat source chamber, 634-connecting valve, 64-water inlet valve, 65-water outlet valve. DETAILED DESCRIPTION

[0048] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0049] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] Example

[0051] Please refer to Figure 4-9 The embodiment of the present invention provides a quasi-triaxial rock mechanics testing device, comprising:

[0052] A confining pressure chamber 10, wherein the confining pressure chamber 10 stores confining pressure oil and the confining pressure chamber 10 is in a full oil state;

[0053] A delivery component 20, which is used to deliver the experimental sample into the confining pressure chamber 10;

[0054] a liquid level regulating component 30, wherein the liquid level regulating component 30 is connected to the confining pressure chamber 10 and is used for regulating the oil saturation state of the confining pressure oil in the confining pressure chamber 10;

[0055] A pressurizing component 40, wherein the 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, wherein the pore pressure regulating component 50 is connected to the experimental sample and is used to apply pore pressure to the experimental sample;

[0057] The temperature regulating component 60 is connected to the confining pressure chamber 10 and is used for regulating the temperature of the confining pressure oil in the confining pressure chamber 10 .

[0058] The quasi-triaxial rock mechanics testing device provided by the present invention realizes sample delivery through the delivery component 20, realizes the saturation state adjustment of the confining pressure oil through the liquid level adjustment component 30, applies confining pressure to the sample through the booster component 40, applies pore pressure to the experimental sample through the pore pressure adjustment component 50, and realizes the temperature adjustment of the confining pressure oil through the temperature adjustment component, thereby completing the rock mechanics test of the sample. The present invention sets the confining pressure chamber 10 to store the confining pressure oil, and there is no need to fill the oil before each test and drain the oil after the test, thereby avoiding the time consumption of filling / draining the oil and effectively improving the test efficiency.

[0059] In some feasible implementations, the confining pressure chamber 10 is composed of a bottom plate and a plurality of side plates, and the plurality of side plates are arranged on the bottom plate to form a space for storing confining pressure oil.

[0060] The confining pressure chamber 10 is composed 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 encloses a space for storing confining pressure oil. During the test, the confining pressure chamber 10 can always be in a full oil state. There is no need to fill the oil before each test and drain the oil after the test, which avoids the time consumption of filling / draining the 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 disposed at the top of the confining pressure chamber 10 , and a sample delivery hole 25 is opened on the top plate 21 for the experimental sample to enter the confining pressure chamber 10 ;

[0063] The upper pressure head 22 is arranged above the outer side of the confining pressure chamber 10, and the lower pressure head 23 is arranged at the inner bottom of 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 to push the experimental sample downward to contact the lower pressure head 23 to achieve sealing;

[0064] The rubber sleeve 24 is disposed in 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 , and 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, and the up and down reciprocating motion of the upper pressure head 22 is realized by an axial piston rod connected to the upper pressure head 22. In other embodiments, the axial piston rod can also be realized by other telescopic parts. 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 actual use, the rubber sleeve 24 is fixedly connected between the top plate 21 and the lower pressure head 23 by a fixing part, so that the rubber sleeve 24 does not need to be removed or installed each time the sample is taken out, and manual sealing of the sample can be avoided, thereby improving the test efficiency. The rubber sleeve 24 is made of a special material that meets the requirements of the laboratory and can be used repeatedly for a long time. The connection between the rubber sleeve 24 and the top plate 21, as well as the rubber sleeve 24 and the lower pressure head 23 are firm and well sealed, which can isolate the sample from the confining pressure oil. At the same time, the rubber sleeve 24 can withstand high pressure and high temperature after being attached to the experimental sample, and has a certain toughness and elasticity to ensure that the sample is not damaged.

[0067] In principle, the present invention has no particular restrictions on the specific selection of the aperture of the sample delivery hole 25, and 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, the present invention has no 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 adapt to the delivery of samples of various sizes. In order to facilitate processing and meet the sample size requirements, the diameter of the rubber sleeve 24 and the aperture of the sample delivery hole 25 are set to the same size.

[0069] The rubber sleeve 24 used in the present invention is an inflatable and deflable type. The inflatable and deflable rubber sleeve 24 can be inflated to make it swell and fit against the hole wall of the sample storage hole. After the inflatable and deflable rubber sleeve 24 is inflated, it is also convenient to put the sample into the inflatable and deflable rubber sleeve 24.

[0070] In some feasible implementations, 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 a liquid regulating pipeline, and the liquid level control valve 32 is arranged on the liquid regulating pipeline to adjust the overflow condition of the confining pressure oil.

[0072] When the sample is taken out of the rubber sleeve 24, a part of the space will be given up, so that the oil storage space in the confining pressure chamber 10 is increased. When the sample is put into the rubber sleeve 24, a part of the space will be occupied, so that the oil storage space in the confining pressure chamber 10 is reduced. In other words, the oil storage space in the confining pressure chamber 10 will change with the taking out and putting in of the sample. In order to adjust the amount of confining pressure oil in the confining pressure chamber 10, the confining pressure chamber 10 is always in a full oil state, and the overflow of the confining pressure oil is adjusted by the liquid level control valve 32, and the confining pressure oil in the confining pressure chamber 10 is adjusted to be saturated but not pressurized. The oil pressure in the confining pressure chamber 10 is adjusted by the liquid level control valve 32, that is, when the core and the upper pressure head 22 are put in, the saturated chamber is prevented from being pressurized, or the rubber sleeve 24 cannot be bulged, the core cannot be put in, and the oil overflows and is discharged to relieve the pressure.

[0073] When the sample is placed in the rubber sleeve 24, the liquid level control valve 32 is opened, and the confining pressure oil in the confining pressure chamber 10 overflows to the liquid level regulating tank 31 through the liquid regulating pipeline; when the sample is taken out of the rubber sleeve 24, the liquid level control valve 32 is opened, and the confining pressure oil in the liquid level regulating tank 31 flows back to the confining pressure chamber 10 through the liquid regulating pipeline. In this embodiment, the liquid level control valve 32 can be a needle valve, or 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. In the process of taking and placing samples, 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 form a closed space.

[0074] In some feasible implementations, the pressurizing component 40 includes a confining pressure booster 41 , and the confining pressure booster 41 is connected to the confining pressure chamber 10 through a pressurizing pipeline.

[0075] The confining pressure booster 41 can apply confining pressure to the sample in the confining pressure chamber 10 , thereby providing a confining pressure environment for the sample and improving the test accuracy.

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

[0077] The upper end of the experimental sample is connected to the plugging piece 51 through the bore pressure pipeline, and the lower end of the experimental sample is connected to the bore pressure controller 52 through the bore air pressure pipeline. The lower end of the experimental sample is connected, and the upper end is connected to the plugging piece. From bottom to top, the bore pressure is applied through the controller.

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

[0079] A heating component, which is arranged outside the confining pressure chamber 10 and is used to heat the confining pressure oil in the confining pressure chamber 10;

[0080] A heat exchange component is connected to the confining pressure chamber 10 and is used for exchanging heat with the confining pressure oil in the confining pressure chamber 10 .

[0081] In some feasible implementations, the heating component includes: a temperature rise controller 61 , and the temperature rise controller 61 is sleeved on the outer side wall of the confining pressure chamber 10 .

[0082] The confining pressure oil is heated by heating to simulate the environment of the sample at the formation temperature. The temperature controller 61 is a combination of a heater and a controller, and the heater is controlled by the controller to achieve the effect of heating and temperature increase.

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

[0084] The heat exchange coil 62 is arranged in a ring inside the confining pressure chamber 10, and 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 water inlet valve 64 is arranged on the water inlet pipe, and the water outlet valve 65 is arranged on the water outlet pipe.

[0086] The confining oil is heated by heat exchange to simulate the environment in which the sample is at formation temperature.

[0087] In this embodiment, the heat exchange coil 62 can be set to be longer, so that the portion of the heat exchange coil 62 located in the confining pressure chamber 10 can surround the rubber sleeve 24. Furthermore, the curved portion of the portion of the heat exchange coil 62 located in the confining pressure chamber 10 can contact the inner wall of the confining pressure chamber 10. In this way, the heat exchange coil 62 entering the confining pressure chamber 10 can be long enough, and the heat exchange coil 62 can play a good role in regulating the temperature of the confining pressure oil.

[0088] In some feasible implementations, the water storage tank 63 includes: a box body 631, wherein the box body 631 is divided into a cold source chamber 632 and a hot source chamber 633, and the cold source chamber 632 and the hot source chamber 633 are connected via a connecting valve 634;

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

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

[0091] The temperature regulating assembly 60 provided by the present invention can not only quickly heat up the confining pressure oil, but also quickly cool down the confining pressure oil, thereby improving the operability of the test. Since the temperature can be quickly cooled, the time consumption of waiting for the oil temperature to cool down is avoided, and the test at any temperature is facilitated, thereby improving the test efficiency.

[0092] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method 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 in the scope of protection of the present invention.

Claims

1. A quasi-triaxial rock mechanics testing device, characterized in that: include: A confining pressure chamber (10), wherein the confining pressure chamber (10) stores confining pressure oil, and the confining pressure chamber (10) is in a full oil state; A delivery component (20), the delivery component (20) is used to deliver the experimental sample into the confining pressure chamber (10); a liquid level regulating component (30), the liquid level regulating component (30) being connected to the confining pressure chamber (10) and being used for regulating the oil saturation state of the confining pressure oil in the confining pressure chamber (10); a pressurizing component (40), the pressurizing component (40) being connected to the confining pressure chamber (10) and being used to apply confining pressure to the sample in the confining pressure chamber (10); A pore pressure regulating component (50), the pore pressure regulating component (50) being connected to the experimental sample and used for applying pore pressure to the experimental sample; A temperature regulating component (60), wherein the temperature regulating component (60) is connected to the confining pressure chamber (10) and is used for regulating the temperature of the confining pressure oil in the confining pressure chamber (10).

2. The quasi-triaxial rock mechanics testing device according to claim 1, characterized in that: The confining pressure chamber (10) is composed of a bottom plate and a plurality of side plates, wherein the plurality of side plates are arranged on the bottom plate to form a space for storing confining pressure oil.

3. The quasi-triaxial rock mechanics testing device according to claim 1, characterized in that: The delivery component (20) comprises: a top plate (21), an upper pressure head (22), a lower pressure head (23) and a rubber sleeve (24); The top plate (21) is arranged at the top of the confining pressure chamber (10), and a sample delivery hole (25) is opened on the top plate (21) for the experimental sample to enter the confining pressure chamber (10); The upper pressure head (22) is arranged above the outer side of the confining pressure chamber (10), and the lower pressure head (23) is arranged at the inner bottom of 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 to push the experimental sample downward to contact with the lower pressure head (23) to achieve sealing; The rubber sleeve (24) is arranged in 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), and the other end of the rubber sleeve (24) is connected to the lower pressure head (23).

4. The quasi-triaxial rock mechanics testing device according to claim 3, characterized in that: The liquid level regulating component (30) comprises: 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) via a liquid regulating pipeline, and the liquid level control valve (32) is arranged on the liquid regulating pipeline to regulate the overflow condition of the confining pressure oil.

5. The quasi-triaxial rock mechanics testing device according to claim 1, characterized in that: The pressurizing component (40) comprises: a confining pressure booster (41), and the confining pressure booster (41) is connected to the confining pressure chamber (10) through a pressurizing pipeline.

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

7. The quasi-triaxial rock mechanics testing device according to claim 1, characterized in that: The temperature adjustment component (60) comprises: a heating component, the heating component being arranged outside the confining pressure chamber (10) and being used for heating the confining pressure oil in the confining pressure chamber (10); A heat exchange component is connected to the confining pressure chamber (10) and is used for exchanging heat for the confining pressure oil in the confining pressure chamber (10).

8. The quasi-triaxial rock mechanics testing device according to claim 7, characterized in that: The heating component comprises a temperature rise controller (61), and the temperature rise controller (61) is sleeved on the outer side wall of the confining pressure chamber (10).

9. The quasi-triaxial rock mechanics testing device according to claim 7, characterized in that: The heat exchange component comprises: a heat exchange coil (62), a water storage tank (63), a water inlet valve (64) and a water outlet valve (65); The heat exchange coil (62) is arranged in a ring inside 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; The water inlet valve (64) is arranged on the water inlet pipe, and the water outlet valve (65) is arranged on the water outlet pipe.

10. The quasi-triaxial rock mechanics testing device according to claim 9, characterized in that: The water storage tank (63) comprises: a box body (631), wherein the box body (631) is divided into a cold source chamber (632) and a hot source chamber (633), wherein the cold source chamber (632) and the hot source chamber (633) are connected via a connecting valve (634); The water outlet of the water storage tank (63) is in communication with the cold source chamber (632), and the water inlet of the water storage tank (63) is in communication with the heat source chamber (633).

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