Rock mechanical test device

Abstract

The utility model relates to the technical field of rock mechanics test equipment, and discloses a rock mechanics test device which comprises a sample box, a temperature control module, a water pressure control module and a load applying module, a water cavity is formed in the sample box, pressure head holes are formed in the upper end and the lower end of the sample box, and sealing rings are inserted into the inner sides of the pressure head holes. A water injection hole is further formed in one side of the sample box and communicated with the water cavity body, the temperature control module comprises a power source, a temperature relay and a heater, two binding posts are fixedly installed on the power source, and one binding post is electrically connected with a switch through a connecting wire. By designing the rock sample box, different water pressures can be directly applied to the rock sample, the water temperature can be adjusted, and the variable load can be directly applied to the rock sample, so that the synchronous coupling effect of pore water pressure, temperature and external load is realized, the test process is easy to realize, and the existing rock mechanical testing machine does not need to be changed; the technical defect that an existing triaxial rock mechanical testing machine cannot apply pore pressure and change temperature is overcome.

Description

TECHNICAL FIELD

[0001] The utility model relates to rock mechanics test equipment technical field, especially relate to a rock mechanics testing device. BACKGROUND

[0002] In the field of rock mechanics, the rock and rock-like materials (such as mine roadway, stope, filling body, etc.) in underground engineering are subjected to the comprehensive action of ground pressure, ground temperature and pore water pressure for a long time, and the above three factors have a significant influence on the mechanical properties of rock, pore water pressure not only changes the effective stress of rock, but also causes splitting effect; temperature rise will accelerate the dissolution of water-soluble elements and water erosion, and promote the flow of pore water; and under different external load conditions, the coupling effect of pore water pressure and temperature will further change the deformation and failure characteristics of rock;

[0003] At present, indoor test is the main means to study the mechanical properties of rock, including uniaxial compression test, conventional triaxial test, true triaxial test, etc., in the prior art, the rock mechanics testing machine can realize variable load research by controlling the loading path, the triaxial testing machine can simulate the confining pressure effect, and part of the device realizes temperature control through electric heating device, however, the prior art is mainly aimed at simulating single or part factors (such as load, confining pressure or temperature), lacks integrated design of synchronous control of pore water pressure, temperature and external load, and the influence of pore water pressure and temperature on the mechanical properties of rock has dynamic interaction, for example, high temperature can aggravate the penetration and splitting effect of water pressure, and the prior art cannot realize the synchronous coupling loading of the three. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a rock mechanics testing device, which can effectively solve the problems in the background art.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the utility model is as follows:

[0006] The utility model relates to a rock mechanics testing device, including sample box with temperature control module, water pressure control module, load application module, the water cavity is opened in the sample box, the upper end and the lower end of sample box are all opened pressure head hole, the inboard of pressure head hole is inserted and is installed with sealing ring, the one side of sample box is also opened and is equipped with the water injection hole, and the water injection hole is connected with water cavity cavity, the temperature control module includes power, temperature relay and heater, two binding posts are fixedly installed on the power, and one binding post is electrically connected with switch through connecting line, and the other binding post is electrically connected with one end of temperature relay, resistance wire is fixedly installed in the heater, and one end of resistance wire is electrically connected with one end of switch, and the other end of resistance wire is electrically connected with one end of temperature relay, the water pressure control module includes water pump, pressure sensor, check valve and water tank, the water pump is electrically connected with external host computer through connecting line, one end of water pump is fixedly connected with third pipeline, the third pipeline away from the water pump leading end extends to the water tank, the other end of water pump is connected with one end of heater through second pipeline, and the other end of heater is connected with water injection hole through first pipeline, and pressure sensor and check valve are fixedly installed on first pipeline respectively, the load application module includes upper pressure head and lower pressure head, one end of upper pressure head and lower pressure head is inserted and is installed in one pressure head hole respectively, and the other end of upper pressure head and lower pressure head is fixedly connected on the dynamic end and static end of rock mechanics testing machine.

[0007] As a further preferred embodiment of the utility model, the data transmission end of the pressure sensor is electrically connected with the external host computer through a connecting line, which can be used for real-time feedback and adjustment of the delivery flow of the water pump.

[0008] As a further preferred embodiment of the utility model, the check valve is an electromagnetic control valve, which can automatically switch the water flow direction according to the pressurization or pressure relief requirement.

[0009] As a further preferred embodiment of the utility model, a sealing ring is inserted and installed in the pressure head hole, and the sealing ring is also sleeved on the outer side of the upper pressure head or the lower pressure head, so that the upper pressure head and the lower pressure head are connected to the rock mechanics testing machine, and the synchronous coupling effect of the pore water pressure, the temperature and the external load can be realized.

[0010] Compared with the prior art, the utility model has the following beneficial effects:

[0011] In the utility model, the rock sample box is designed, different water pressure can be directly applied to the rock sample, the water temperature can be adjusted, and variable load can be applied, the synchronous coupling effect of the pore water pressure, the temperature and the external load is realized, the test process is easy to realize, the existing rock mechanics testing machine does not need to be changed, and the technical defects that the existing triaxial rock mechanics testing machine cannot apply pore pressure and change temperature are overcome. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 The main body of the utility model is illustrated in detail.

[0013] In the figure: 1, sample box; 2, water cavity; 3, sample; 4, pressure head hole; 5, upper pressure head; 6, lower pressure head; 7, water injection hole; 8, heater; 9, resistance wire; 10, water pump; 11, pressure sensor; 12, check valve; 13, water tank; 14, power supply; 15, temperature relay; 16, terminal post; 17, switch; 18, first pipeline; 19, second pipeline; 20, third pipeline. DETAILED DESCRIPTION

[0014] In order to make the technical means, creative features, purposes and effects of the utility model easy to understand, the utility model is further described below in combination with specific embodiments.

[0015] As shown in Figure 1 The utility model provides a kind of rock mechanics testing device, including sample box 1 and temperature control module, water pressure control module, load exerting module, water cavity 2 is set in sample box 1, pressure head hole 4 is set in the upper end and lower end of sample box 1, sealing ring is inserted and installed in the inside of pressure head hole 4, sample box 1 side is also provided with water injection hole 7, and water injection hole 7 and water cavity 2 cavity communicate;Temperature control module includes power supply 14, temperature relay 15 and heater 8, two terminal posts 16 are fixedly installed on power supply 14, one of terminal posts 16 is electrically connected with switch 17 by connecting line, another terminal post 16 and temperature relay 15 one end electrically connected, resistance wire 9 is fixedly installed in heater 8, and one end of resistance wire 9 and one end of switch 17 electrically connected, another end of resistance wire 9 and one end of temperature relay 15 electrically connected;Water pressure control module includes water pump 10, pressure sensor 11, check valve 12 and water tank 13, water pump 10 is electrically connected with external host computer by connecting line, one end of water pump 10 is fixedly connected with third pipeline 20, third pipeline 20 remote water pump 10 drive end extends into water tank 13, another end of water pump 10 is connected with one end of heater 8 by second pipeline 19, another end of heater 8 is connected with water injection hole 7 by first pipeline 18, and pressure sensor 11 and check valve 12 are fixedly installed on first pipeline 18 respectively;Load exerting module includes upper pressure head 5 and lower pressure head 6, one end of upper pressure head 5 and lower pressure head 6 is inserted and installed in one of pressure head hole 4 respectively, another end of upper pressure head 5 and lower pressure head 6 is fixedly connected on the moving end and static end of rock mechanics testing machine respectively.

[0016] As shown in Figure 1As shown, the data transmission end of the pressure sensor 11 is electrically connected with an external host through a connecting line, which can be used for real-time feedback and adjustment of the delivery flow of the water pump 10; the check valve 12 is an electromagnetic control valve, which can automatically switch the water flow direction according to the pressurization or pressure relief requirement; a sealing ring is inserted and installed in the pressure head hole 4, and the sealing ring is also sleeved on the outer side of the upper pressure head 5 or the lower pressure head 6; the upper pressure head 5 and the lower pressure head 6 are connected to the rock mechanics testing machine, so that the synchronous coupling effect of the pore water pressure, the temperature and the external load can be realized.

[0017] It should be noted that the utility model is a rock mechanics testing device, the sample 3 is put into the water cavity 2 through the pressure head hole 4, then the sample box 1 is put into the rock mechanics testing machine, and the two pressure head holes 4 are respectively inserted in one end of the upper pressure head 5 and the lower pressure head 6, and the center of the two ends of the sample 3 is respectively aligned with the center of the upper pressure head 5 and the lower pressure head 6, and the sealing ring is sleeved between the upper pressure head 5 and one of the pressure head holes 4, and the sealing ring is also sleeved between the lower pressure head 6 and the other pressure head hole 4, so that the water cavity 2 in the sample box 1 is in a sealed state, then the water tank 13 is filled with water, then the rock mechanics testing machine cooperates with the upper pressure head 5 and the lower pressure head 6 to apply a certain load to the sample 3, so that the sample 3 can be fixed between the upper pressure head 5 and the lower pressure head 6, then the switch 17 is closed, the heating of the resistance wire 9 can be realized, the external host is started to start the water pump 10, so that the water pump 10 draws the water in the water tank 13 into the water cavity 2 through the third pipeline 20 and the second pipeline 19 via the heater 8, the first pipeline 18 and the water injection hole 7, and the check valve 12 plays a role of preventing backflow, simultaneously, the data of the pressure sensor 11 needs to be observed in real time, when the pressure in the water cavity 2 reaches the required water pressure of the test, the water pump 10 is closed through the external host, so that the rock mechanics testing machine cooperates with the upper pressure head 5 and the lower pressure head 6 to apply a load to the sample 3, at the same time that the rock mechanics testing machine cooperates with the upper pressure head 5 and the lower pressure head 6 to apply a load to the sample 3, the water pump 10, the check valve 12 and the heater 8 can be used to realize the coupling effect of variable pore pressure, variable temperature and variable load on the sample 3, when the test is completed, the check valve 12 is opened through the external host, so that the water in the water cavity 2 flows back to the water tank 13, and the upper pressure head 5 and the lower pressure head 6 are reset by the rock mechanics testing machine.

[0018] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited to the above-mentioned embodiments, the above-mentioned embodiments and the description in the specification are only for illustrating the principle of the utility model, various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed. The scope of protection of the utility model is defined by the appended claims and their equivalents.

Claims

1. A rock mechanics testing device, characterized by: The utility model relates to a rock mechanics testing machine, including test sample box (1) with temperature control module, water pressure control module, load application module, the water cavity (2) is set up in test sample box (1), the upper end and the lower end of test sample box (1) are all set up pressure head hole (4), the inboard of pressure head hole (4) is inserted and installed with sealing ring, the one side of test sample box (1) is also set up water injection hole (7), and water injection hole (7) with water cavity (2) cavity intercommunication, The temperature control module includes a power supply (14), a temperature relay (15) and a heater (8), two terminal posts (16) are fixedly installed on the power supply (14), one of the terminal posts (16) is electrically connected with a switch (17) through a connecting line, and the other terminal post (16) is electrically connected with one end of the temperature relay (15); a resistance wire (9) is fixedly installed in the heater (8), one end of the resistance wire (9) is electrically connected with one end of the switch (17), and the other end of the resistance wire (9) is electrically connected with one end of the temperature relay (15); The water pressure control module includes a water pump (10), a pressure sensor (11), a check valve (12) and a water tank (13), the water pump (10) is electrically connected with an external host controller through a connecting line, one end of the water pump (10) is fixedly connected with a third pipeline (20), the third pipeline (20) extends into the water tank (13) away from the water pump (10), the other end of the water pump (10) is connected with one end of the heater (8) through a second pipeline (19), the other end of the heater (8) is connected with the water injection hole (7) through a first pipeline (18), and the pressure sensor (11) and the check valve (12) are fixedly installed on the first pipeline (18) respectively; The load application module includes an upper pressure head (5) and a lower pressure head (6), one end of the upper pressure head (5) and the lower pressure head (6) is inserted into one of the pressure head holes (4) respectively, and the other end of the upper pressure head (5) and the lower pressure head (6) is fixedly connected with a moving end and a static end of a rock mechanics testing machine respectively.

2. The rock mechanics testing device of claim 1, wherein: The data transmission end of the pressure sensor (11) is electrically connected with the external host controller through a connecting line.

3. The rock mechanics testing device of claim 1, wherein: The check valve (12) is an electromagnetic control valve.

4. The rock mechanics testing device of claim 1, wherein: The sealing ring is inserted into the pressure head hole (4) and is sleeved on the outer side of the upper pressure head (5) or the lower pressure head (6).

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