CN-121994621-A - Osmotic pressure and temperature coupling simulation device and method based on true triaxial electromagnetic loading

CN121994621ACN 121994621 ACN121994621 ACN 121994621ACN-121994621-A

Abstract

The invention relates to the technical field of rock mechanics engineering and discloses an osmotic pressure and temperature coupling simulation device and method based on true triaxial electromagnetic loading, wherein the osmotic pressure and temperature coupling simulation device comprises a triaxial electromagnetic loading assembly, a test box, six dynamic sealing assemblies, an osmotic pressure assembly, a heating assembly and an acquisition assembly, wherein the test box is arranged in the middle of the triaxial electromagnetic loading assembly, a six-surface opening is matched with a waveguide rod, and a sealing cavity is formed between the sealing opening of the six dynamic sealing assemblies and the waveguide rod; the structure can realize triaxial six-direction synchronous dynamic loading, can synchronously and accurately regulate and control the osmotic pressure and the temperature in the sealed cavity in the dynamic loading, solves the problems that the traditional device only carries out single-axis dynamic loading and cannot cooperatively simulate a multi-field coupling environment, and truly restores the occurrence environment of high ground stress, high ground temperature and high osmotic pressure of a deep rock mass and multi-axis multi-directional power disturbance coupling.

Inventors

ZHU JIANBO
WANG KANGYU
WANG SILI
LIANG LINSHENG
Zhang Kongwei
ZHOU XINYANG
DING WENDUO
XIE HEPING
BAO WEIYUE
ZHOU TAO
ZHANG SHIWEI
Cen Zhuo
XIE CHENGCHENG
HE QI

Assignees

深圳大学

Dates

Publication Date: 20260508
Application Date: 20260408

Claims (10)

1. Osmotic pressure and temperature coupling analogue means based on true triaxial electromagnetic loading, its characterized in that includes: A triaxial electromagnetic loading assembly; the test box is positioned in the middle of the triaxial electromagnetic loading assembly and is used for placing a sample, and openings are formed in six surfaces of the test box and are respectively matched with the waveguide rods of the triaxial electromagnetic loading assembly; Six dynamic sealing components which are respectively arranged at the opening of the test box and used for sealing the gap between the waveguide rod and the opening so as to form a sealing cavity in the test box; The osmotic pressure assembly is communicated with the sealing cavity and is used for injecting fluid into the sealing cavity; the heating component is arranged on the test box and used for heating the sealing cavity; and the acquisition assembly is connected with the osmotic pressure assembly and the heating assembly and is used for acquiring experimental data.
2. The true triaxial electromagnetic loading based osmotic pressure and temperature coupling simulation device according to claim 1, wherein the dynamic seal assembly includes: The sealing flange is arranged on the surface of the test box and matched with the opening, and a placing groove is arranged on one side of the sealing flange away from the test box; The sealing flange is arranged on one side of the test box, which is far away from the test box, and a through hole matched with the waveguide rod is formed in the center of the sealing flange and the center of the flange plate; The self-adaptive sealing piece is positioned in the placing groove and sleeved on the waveguide rod, and the self-adaptive sealing piece is communicated with an external pneumatic pump.
3. The true triaxial electromagnetic loading based osmotic pressure and temperature coupling simulation device according to claim 2, wherein the adaptive seal comprises: the inner wall of the annular sealing tube is sleeved on the waveguide rod; and one end of the gas injection pipeline is communicated with the inside of the annular sealing pipe, and the other end of the gas injection pipeline penetrates through the sealing flange to be communicated with an external pneumatic pump.
4. The osmotic pressure and temperature coupling simulation device based on true triaxial electromagnetic loading according to claim 2, wherein annular grooves communicated with the opening are formed in six surfaces of the test box, annular protrusions are formed in one sides, close to the opening, of the sealing flange, the annular protrusions are located in the annular grooves and matched with side walls of the annular grooves, sealing grooves are formed in the outer surfaces of the annular protrusions, and sealing rings are arranged in the sealing grooves and used for sealing gaps between the annular protrusions and the annular grooves.
5. The true triaxial electromagnetic loading based osmotic pressure and temperature coupling simulation device according to claim 2, wherein the osmotic pressure assembly comprises: the sample is positioned in the controllable permeation assembly, and the controllable permeation assembly is matched with the waveguide rod of the triaxial electromagnetic loading assembly; The test box is provided with an injection channel, one sealing flange is provided with an exhaust hole communicated with the sealing cavity, and the booster pump is communicated with the injection channel through a pipeline so as to inject fluid into the sealing cavity; The negative pressure vacuum pump is positioned outside the test box and communicated with the exhaust hole through a pipeline.
6. The true triaxial electromagnetic loading based osmotic pressure and temperature coupling simulation device according to claim 5, wherein the osmotic pressure assembly further comprises: the liquid flow detector is positioned outside the test box, and a detection channel is arranged on the test box and is positioned in the detection channel and used for detecting the liquid flow in the sealed cavity.
7. The true triaxial electromagnetic loading based osmotic pressure and temperature coupling simulation device according to claim 5, wherein the controllable osmotic assembly comprises: four sides of the porous bearing plate are respectively abutted against four waveguide rods of the triaxial electromagnetic loading assembly; The nickel-titanium alloy layer is positioned inside the porous bearing plate; the protective coating is arranged on the inner wall of the nickel-titanium alloy layer; the sample is located inside the protective coating.
8. The true triaxial electromagnetic loading based osmotic pressure and temperature coupling simulation device according to claim 1, wherein the heating assembly comprises: The surface of the test box is provided with a plurality of counter bores, and each heating rod is respectively positioned in the corresponding counter bore.
9. The osmotic pressure and temperature coupling simulation device based on true triaxial electromagnetic loading according to claim 1, wherein a temperature detection channel is arranged on the test box, and a temperature sensor is arranged in the temperature detection channel.
10. The osmotic pressure and temperature coupling simulation method based on true triaxial electromagnetic loading is based on the osmotic pressure and temperature coupling simulation device based on true triaxial electromagnetic loading as claimed in any one of claims 1 to 9, and is characterized by comprising the following steps: placing the sample on the surface of a Z 2 -direction waveguide rod of the triaxial electromagnetic loading assembly, and sleeving the test box on the Z 1 -direction waveguide rod; the Z 2 -direction waveguide rod is lifted into the test box by a hydraulic press and is matched with the Z 1 -direction waveguide rod; the direction of the test box is adjusted, the X-direction waveguide rod and the Y-direction waveguide rod are sequentially moved into the test box, and the dynamic sealing assembly, the osmotic pressure assembly, the heating assembly and the collecting assembly are sequentially started; And starting the triaxial electromagnetic loading assembly, dynamically impact loading the sample, and collecting experimental data through the collecting assembly.

Description

Osmotic pressure and temperature coupling simulation device and method based on true triaxial electromagnetic loading Technical Field The invention relates to the technical field of rock mechanics engineering, in particular to an osmotic pressure and temperature coupling simulation device and method based on true triaxial electromagnetic loading. Background As rock engineering continues to enter the earth deep, the rock mass will face a very complex occurrence environment during engineering construction and operation and maintenance, which is characterized by "high ground stress, high ground temperature, high osmotic pressure", and often accompanied by coupling from multiaxial multidirectional dynamic disturbances such as engineering blasting, mechanical tunneling, etc. Under the action of complex environment of multi-field coupling, the dynamic behavior of the rock is more complex and difficult to predict, and great engineering disasters such as rock burst, dynamic instability and the like are extremely easy to induce. Therefore, the research on the dynamic mechanical behavior of the rock mass in the multi-field coupling effect under the deep complex geological environment is deeply developed, and the method has important theoretical and practical significance for guaranteeing the safety and sustainable development of deep engineering. In the prior art, the invention patent with the publication number of CN120507205B discloses a thermal-hydraulic-force coupling experimental device and a testing method based on dynamic true triaxial electromagnetic Hopkinson bar system loading, and rock mass dynamic mechanical testing in a thermal-hydraulic-force coupling environment is primarily realized through integrating an X-axis dynamic shear loading module, a Y-axis lateral seepage-proof loading module, a Z-axis hydrostatic pressure module, a temperature regulation module and a seepage control module. However, the dynamic loading function of the device is limited to the X-axis bidirectional shearing direction, the Z-axis and the Y-axis can only provide static loading, and the complex three-dimensional dynamic disturbance environment (such as multi-directional stress wave action caused by blasting and constructional activities) of the rock mass in deep engineering is difficult to simulate, so that the application of the device in the research of the material dynamics characteristics under complex working conditions is limited. In view of this, the prior art is still to be improved and developed. Disclosure of Invention In view of the shortcomings of the prior art, the invention aims to provide an osmotic pressure and temperature coupling simulation device and method based on true triaxial electromagnetic loading, and aims to solve the problem that an existing rock mass dynamic mechanical experiment device is difficult to simulate a complex three-dimensional dynamic disturbance environment. The technical scheme adopted for solving the technical problems is as follows: Osmotic pressure and temperature coupling simulation device based on true triaxial electromagnetic loading includes: A triaxial electromagnetic loading assembly; the test box is positioned in the middle of the triaxial electromagnetic loading assembly and is used for placing a sample, and openings are formed in six surfaces of the test box and are respectively matched with the waveguide rods of the triaxial electromagnetic loading assembly; Six dynamic sealing components which are respectively arranged at the opening of the test box and used for sealing the gap between the waveguide rod and the opening so as to form a sealing cavity in the test box; The osmotic pressure assembly is communicated with the sealing cavity and is used for injecting fluid into the sealing cavity; the heating component is arranged on the test box and used for heating the sealing cavity; and the acquisition assembly is connected with the osmotic pressure assembly and the heating assembly and is used for acquiring experimental data. Further, the dynamic seal assembly includes: The sealing flange is arranged on the surface of the test box and matched with the opening, and a placing groove is arranged on one side of the sealing flange away from the test box; The sealing flange is arranged on one side of the test box, which is far away from the test box, and a through hole matched with the waveguide rod is formed in the center of the sealing flange and the center of the flange plate; The self-adaptive sealing piece is positioned in the placing groove and sleeved on the waveguide rod, and the self-adaptive sealing piece is communicated with an external pneumatic pump. Further, the adaptive seal includes: the inner wall of the annular sealing tube is sleeved on the waveguide rod; and one end of the gas injection pipeline is communicated with the inside of the annular sealing pipe, and the other end of the gas injection pipeline penetrates through the sealing flange to be communicated w