Experimental device for testing water-rock coupling mechanical properties
By designing an experimental device for testing the mechanical properties of water-rock coupling, and using a press and a water injection mechanism to simulate the water-rock coupling conditions of rocks under different temperatures and pressures, the problem of existing technologies being unable to accurately simulate actual engineering environments has been solved, and the accuracy and precision of experimental results have been improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-08
- Publication Date
- 2026-04-14
AI Technical Summary
Existing experimental setups cannot effectively control temperature and water-rock coupling conditions, making it difficult to accurately simulate complex environments in actual engineering projects, resulting in significant deviations between experimental results and actual conditions.
An experimental device for testing the mechanical properties of water-rock coupling was designed, comprising a press, an experimental chamber, and a water injection mechanism. The press applies pressure, and the water injection mechanism injects water at different temperatures. Combined with temperature sensors and strain stress sensors, the mechanical changes of rock samples are monitored to simulate complex environments in actual engineering.
It achieves precise control over temperature and water-rock coupling conditions, improving the accuracy and precision of experimental results, and enabling more realistic simulation of complex environments in deep underground resource extraction, geothermal development, and other engineering projects.
Smart Images
Figure CN224122426U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of mechanical property testing, and in particular to an experimental device for testing the mechanical properties of water-rock coupling. Background Technology
[0002] In the fields of rock mechanics and geological engineering, the mechanical properties of rocks are affected by a variety of factors, among which temperature and the presence of water are important influencing factors. In many engineering applications, such as deep underground resource extraction, geothermal development, and nuclear waste disposal, the mechanical properties of rocks change significantly when they are in different temperature and water-rock coupled environments.
[0003] Existing experimental setups often fail to control temperature and water-rock coupling conditions, making it difficult to accurately simulate the complex environments in actual engineering projects. This results in significant discrepancies between experimental results and real-world conditions. Therefore, there is an urgent need to research and improve existing structures and address their shortcomings to achieve greater practical value. Utility Model Content
[0004] The purpose of this invention is to provide an experimental device for testing the mechanical properties of water-rock coupling, so as to solve the problems existing in the prior art, enable the temperature and water-rock coupling conditions to be controlled, more accurately simulate the complex environment in actual engineering, and improve the accuracy of experimental results.
[0005] To achieve the above objectives, this utility model provides the following solution:
[0006] This utility model provides an experimental device for testing the mechanical properties of water-rock coupling, including a press, an experimental chamber, and a water injection mechanism. The experimental chamber is equipped with a cavity for accommodating rock samples and a data detection unit. The data detection unit is used to detect the experimental data of the rock samples. The bottom of the experimental chamber is set on the platform of the press, and the top of the press has a pressure rod that slides through it. The pressure rod is used to apply pressure to the rock samples. The experimental chamber is provided with a discharge port, and a cover plate is sealed to the discharge port. The water injection mechanism is connected to the interior of the experimental chamber.
[0007] Preferably, the experimental chamber is a cuboid box, with an observation port on three sides and a material discharge port on one side.
[0008] Preferably, the observation port is fitted with tempered glass; the experimental chamber is made of cast iron and stainless steel.
[0009] Preferably, the discharge port is provided with a plurality of studs, and the cover plate is provided with a plurality of through holes circumferentially. The number and position of the through holes correspond one-to-one with the number of studs. The cover plate is inserted into the studs and locked by a wing nut.
[0010] Preferably, a retaining seat is provided at the top of the experimental chamber, the pressure rod passes through the retaining seat, and the pressure rod, the retaining seat, and the top plate of the experimental chamber are all transition fit.
[0011] Preferably, the lower end of the pressure rod is connected to a pressure plate, which is located inside the experimental chamber and is used to compress the rock sample.
[0012] Preferably, the data detection unit includes a temperature sensor and a strain stress sensor. The strain stress sensor and the temperature sensor are disposed on the bottom plate of the experimental chamber. The strain stress sensor is disposed opposite to the pressure plate. The press, the strain stress sensor and the temperature sensor are all communicatively connected to a control unit.
[0013] Preferably, the water injection mechanism includes a water injection hopper and a water injection pipe, wherein the water injection hopper is connected to the interior of the experimental chamber through the water injection pipe.
[0014] Preferably, the water injection pipe is L-shaped and is equipped with a valve.
[0015] Preferably, the water injection hopper can be connected to water at different temperatures.
[0016] The present invention achieves the following technical advantages over the prior art:
[0017] This invention provides a power source for applying pressure by setting up a press, thereby applying pressure to the rock sample in the experimental chamber to simulate the mechanical state of the rock under different pressure environments. By injecting water at different temperatures into the experimental chamber through a water injection mechanism, experimental conditions of water-rock coupling at different temperatures can be achieved. This allows for obtaining the changes of the rock sample in the experimental chamber under different pressures, temperatures, and water-rock coupling effects, thus improving the accuracy of the experimental results. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0019] Figure 1 This is a schematic diagram of the experimental device for testing the coupled mechanical properties of water and rock in this embodiment of the present invention. Figure 1 ;
[0020] Figure 2 This is a schematic diagram of the experimental device for testing the coupled mechanical properties of water and rock in this embodiment of the present invention. Figure 2 ;
[0021] Figure 3 This is a schematic diagram of the external structure of the experimental chamber in an embodiment of the present invention. Figure 1 ;
[0022] Figure 4 This is a schematic diagram of the external structure of the experimental chamber in an embodiment of the present invention. Figure 2 ;
[0023] Figure 5 This is a schematic diagram of the internal structure of the experimental chamber in an embodiment of this utility model;
[0024] In the diagram: 1-pressor, 2-experimental chamber, 3-observation port, 4-tempered glass, 5-retaining seat, 6-pressure rod, 7-pressure plate, 8-water injection pipe, 9-valve, 10-base plate, 11-water injection hopper, 12-cover plate, 13-wing nut, 14-strain stress sensor, 15-temperature sensor, 16-controller, 17-terminal block, 18-discharge port, 19-stud. Detailed Implementation
[0025] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0026] The purpose of this invention is to provide an experimental device for testing the mechanical properties of water-rock coupling, in order to solve the problems existing in the prior art, so as to control the coupling conditions of temperature and water-rock, more accurately simulate the complex environment in actual engineering, and improve the accuracy of experimental results.
[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0028] like Figures 1 to 5As shown, this embodiment provides an experimental device for testing the mechanical properties of water-rock coupling, including a press 1, an experimental chamber 2, and a water injection mechanism. The experimental chamber 2 contains a cavity for accommodating rock samples and a data detection unit. The data detection unit is used to detect experimental data from the rock samples. The bottom of the experimental chamber 2 is mounted on the platform of the press 1, and a pressure rod 6 of the press 1 slides through the top, applying pressure to the rock samples. The experimental chamber 2 has a discharge port 18, which is sealed with a cover plate 12. The water injection mechanism communicates with the interior of the experimental chamber 2. The discharge port 18 of the experimental chamber 2 facilitates the placement of rock samples by the operator. The bottom of the press 1 has a connection hole for fixing to a mounting surface.
[0029] As an optional solution, in this embodiment, the experimental chamber 2 is a cuboid box, with an observation port 3 on three sides and a discharge port 18 on one side. In this embodiment, the observation port 3 and the discharge port 18 are integrally cast with the experimental chamber 2, which can ensure the airtightness of the water source.
[0030] As an optional solution, in this embodiment, tempered glass 4 is embedded in the observation port 3 to facilitate users to observe the internal conditions of the experimental chamber 2 in real time; the experimental chamber 2 is made of cast iron and stainless steel, which is sturdy and prevents rocks from flying and injuring people during the compression process, thus playing a protective role.
[0031] As an optional solution, in this embodiment, the discharge port 18 is evenly distributed with a number of studs 19, and the cover plate 12 is evenly distributed with a number of through holes in its circumference. The number and position of the through holes correspond one-to-one with the number of studs 19. The cover plate 12 is inserted into the studs 19 and locked by the wing nut 13. The cover plate is preferably inlaid with tempered glass 4, which can realize the observation of the internal condition of the experimental chamber 2 from any side. The wing nut 13 is threadedly connected to the studs 19, which can be used to tighten and loosen the cover plate 12.
[0032] As an optional solution, in this embodiment, a retaining seat 5 is provided on the top of the experimental chamber 2, and the pressure rod 6 passes through the retaining seat 5, which can improve the movement stability of the pressure rod 6. The pressure rod 6, the retaining seat 5 and the top plate of the experimental chamber 2 are all transition fit.
[0033] As an optional solution, in this embodiment, a pressure plate 7 is connected to the lower end of the pressure rod 6 to facilitate uniform force on the rock sample. The pressure plate 7 is located inside the experimental chamber 2 and is used to directly squeeze the rock sample to ensure that the rock sample is subjected to more uniform force.
[0034] As an optional solution, the data detection unit in this embodiment includes a temperature sensor 15 and a strain-stress sensor 14. The strain-stress sensor 14 and the temperature sensor 15 are installed on the bottom plate 10 of the experimental chamber 2. The temperature sensor 15 is used to monitor the temperature change of the water in the experimental chamber 2 in real time so as to study the influence of temperature on the mechanical properties of rocks. The strain-stress sensor 14 is used to monitor the strain and stress changes of the rock sample under the action of force and water-rock coupling. The strain-stress sensor 14 is arranged opposite to the pressure plate 7. The press 1, the strain-stress sensor 14 and the temperature sensor 15 are all connected to a control unit for communication, so as to facilitate real-time monitoring of experimental data and operation of the press 1. In this embodiment, both the strain stress sensor 14 and the temperature sensor 15 are connected to an external controller 16. Preferably, a terminal block 17 is provided on the side wall of the experimental chamber 2 to realize the data transmission between the strain stress sensor 14 and the temperature sensor 15 and the controller 16. This provides key data for studying the mechanical properties of rocks and ensures that the data measured by the sensors can be accurately and timely fed back to the control system for analysis and processing. It also realizes the control of the press 1, increases the ease of use of the product, can effectively and accurately simulate the complex environment in actual engineering, improves the accuracy of experiments, and has high practical value.
[0035] As an optional solution, the water injection mechanism in this embodiment includes a water injection hopper 11 and a water injection pipe 8. The water injection hopper 11 is connected to the interior of the experimental chamber 2 through the water injection pipe 8. The water injection pipe 8 is preferably connected to the upper end of the experimental chamber 2, so that water of different temperatures can be conveniently injected into the water injection pipe 8, thereby improving the convenience and efficiency of water injection.
[0036] As an optional solution, in this embodiment, the water injection pipe 8 is L-shaped and a valve 9 is provided on the water injection pipe 8 to realize the on / off control of the water injection pipe 8, thereby controlling the water injection volume.
[0037] As an optional solution, in this embodiment, the water injection hopper 11 can receive water at different temperatures while avoiding water spillage, allowing rock samples to be obtained under different pressures, temperatures, and water-rock coupling conditions. In this embodiment, after the specimen is crushed, it is poured out from the discharge port 18 along with water; based on the temperature reading of the temperature sensor 15, the water temperature in the experimental chamber 2 can be controlled by injecting warm water in real time; alternatively, a heating plate can be installed in the experimental chamber 2, and the water temperature can be controlled by a temperature controller.
[0038] The specific working process and principle of the water-rock coupling mechanical property testing experimental device in this embodiment are as follows: In use, first open the cover plate 12, place the rock sample on the strain stress sensor 14 in the experimental chamber 2, and then control the press 1 to apply pressure through the controller 16. The pressure plate 7 of the press 1 applies pressure to the rock sample in the experimental chamber 2 to simulate the mechanical state of the rock sample under different pressure environments. Water can be injected into the experimental chamber 2 through the water injection pipe 8 at the top of the experimental chamber 2, and the opening and closing of the water injection pipe 8 can be controlled by the valve 9. Water of different temperatures can be injected into the experimental chamber 2 to realize the experimental conditions of water-rock coupling. The strain stress sensor 14 is installed in the middle of the bottom of the experimental chamber 2, which can measure the strain and stress changes of the rock sample under the action of force and water-rock coupling in real time, and convert these data into electrical signals for output, providing key data for studying the mechanical properties of rocks. The temperature sensor 15 is installed on one side of the bottom of the experimental chamber 2, which can monitor the temperature changes in the experimental chamber 2 in real time, so as to study the influence of temperature on the mechanical properties of rocks. During the experiment, researchers can observe the changes in the rock sample within experimental chamber 2 under different pressures, temperatures, and water-rock coupling effects in real time through the observation port 3 of experimental chamber 2 without disrupting the experimental environment. This facilitates more intuitive observation of experimental phenomena and acquisition of experimental data. This embodiment effectively and accurately simulates the complex environment in actual engineering projects. By injecting water at different temperatures, it simulates the real temperature environment of the rock sample, improving experimental accuracy and demonstrating high practical value.
[0039] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.
Claims
1. An experimental apparatus for testing the coupled mechanical properties of water and rock, characterized in that: The device includes a press, an experimental chamber, and a water injection mechanism. The experimental chamber contains a cavity for accommodating rock samples and a data detection unit for detecting experimental data from the rock samples. The bottom of the experimental chamber is mounted on the platform of the press, and a pressure rod of the press slides through the top of the chamber to apply pressure to the rock samples. The experimental chamber has a discharge port, which is sealed with a cover plate. The water injection mechanism is connected to the interior of the experimental chamber.
2. The experimental apparatus for testing the coupled mechanical properties of water and rock according to claim 1, characterized in that: The experimental chamber is a rectangular box, with an observation port on three sides and a discharge port on one side.
3. The experimental apparatus for testing the coupled mechanical properties of water and rock according to claim 2, characterized in that: The observation port is fitted with tempered glass; the experimental chamber is made of materials including cast iron and stainless steel.
4. The experimental apparatus for testing the coupled mechanical properties of water and rock according to claim 1, characterized in that: The discharge port is evenly distributed with several studs, and the cover plate is evenly distributed with several through holes in its circumference. The number and position of the through holes correspond one-to-one with the number of studs. The cover plate is inserted into the studs and locked with a wing nut.
5. The experimental apparatus for testing the coupled mechanical properties of water and rock according to claim 1, characterized in that: A retaining seat is provided at the top of the experimental chamber, and the pressure rod passes through the retaining seat. The pressure rod, the retaining seat, and the top plate of the experimental chamber are all transition fit.
6. The experimental apparatus for testing the coupled mechanical properties of water and rock according to claim 1, characterized in that: The lower end of the pressure rod is connected to a pressure plate, which is located inside the experimental chamber and is used to compress the rock sample.
7. The experimental apparatus for testing the coupled mechanical properties of water and rock according to claim 6, characterized in that: The data detection unit includes a temperature sensor and a strain stress sensor. The strain stress sensor and the temperature sensor are disposed on the bottom plate of the experimental chamber. The strain stress sensor is disposed opposite to the pressure plate. The press, the strain stress sensor and the temperature sensor are all communicatively connected to a control unit.
8. The experimental apparatus for testing the coupled mechanical properties of water and rock according to claim 1, characterized in that: The water injection mechanism includes a water injection bucket and a water injection pipe, and the water injection bucket is connected to the interior of the experimental chamber through the water injection pipe.
9. The experimental apparatus for testing the coupled mechanical properties of water and rock according to claim 8, characterized in that: The water injection pipe is L-shaped and is equipped with a valve.
10. The experimental apparatus for testing the coupled mechanical properties of water and rock according to claim 8, characterized in that: The water injection hopper can accept water at different temperatures.