CN218674983U - Dry-wet circulation system for rock expansion test - Google Patents
Dry-wet circulation system for rock expansion test Download PDFInfo
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- CN218674983U CN218674983U CN202222796278.7U CN202222796278U CN218674983U CN 218674983 U CN218674983 U CN 218674983U CN 202222796278 U CN202222796278 U CN 202222796278U CN 218674983 U CN218674983 U CN 218674983U
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Abstract
The application provides a dry-wet circulation system for rock expansion test, which comprises a temperature control-deformation monitoring system, a temperature sensor, a displacement sensor, a heating resistance wire, a permeable stone, a sample, a centering basal disc, a cushion block, a water outlet, a water filling port and a test box. The temperature sensor, the displacement sensor and the heating resistance wire are uniformly regulated and controlled by a temperature control-deformation monitoring module on a detachable top cover of the test box, so that the expansion deformation of the sample under the dry-wet circulation condition is obtained. The system integrates the soaking and drying conditions, can monitor and accurately measure the deformation of the sample in the soaking and drying processes, and can provide more accurate results and convenient operation for the rock expansibility test.
Description
Technical Field
The application relates to the field of civil engineering rock expansion test tests, in particular to a dry-wet circulation system for a rock expansion test.
Background
Rock swells and disintegrates in the presence of water, and this type of rock is commonly referred to as swelling rock. Because the interior of the porous material contains expansive clay minerals, a series of physical and chemical reactions can occur under the action of water, so that the internal microstructure of the porous material is changed, the mechanical strength characteristics of rocks are influenced, and the phenomenon is more obvious under the dry-wet cycle condition. In actual engineering, the rock expands and disintegrates when meeting water, which brings huge potential harm to the engineering and seriously affects the safety of the engineering. Therefore, it is important to measure the expansion of the rock, and the measurement of the expansion is mainly performed by an expansion ratio test and an expansive force test.
The axial deformation and the radial deformation of a sample are monitored mainly through a dial indicator in the expansion rate test process, when the dry-wet cycle condition is simulated, the deformation of the sample is monitored by soaking the sample, then the expansion instrument needs to be moved to an oven to dry the sample, and the deformation of the sample is monitored at the same time, the dial indicator is easy to change in reading due to disturbance in the moving process to influence the test result, and the more the dry-wet cycle times, the greater the influence on the test result; meanwhile, the deformation of the sample needs to be monitored during drying treatment, but the reading of the dial indicator in the oven is very inconvenient, and the reading precision of the existing dial indicator can be influenced to a certain extent under the conditions of water and high temperature.
Therefore, need develop the experimental dry-wet circulation system of rock expansion under integrated soaking and stoving condition urgently, solve the experimental loaded down with trivial details, the inconvenient scheduling problem of operation of test step among the experimental dry-wet circulation process of expansion, carry out real-time supervision and accurate measurement to the sample deflection under the circulation effect of doing wetly, provide more accurate result and convenient operation for the rock expansibility is experimental.
SUMMERY OF THE UTILITY MODEL
The purpose of this application is exactly to overcome prior art's not enough, provides a wet circulation system futilely for rock expansion is experimental, and this system integration soaks and stoving condition, can carry out real-time supervision and accurate measurement to the deflection of sample when soaking and drying, can provide more accurate result and convenient operation for rock expansion nature is experimental.
In order to achieve the purpose, the technical scheme adopted by the application is as follows:
a dry-wet circulation system for a rock expansion test comprises a temperature control-deformation monitoring module, a temperature sensor, an axial displacement sensor, a radial displacement sensor, a heating resistance wire, a permeable stone, a sample, a centering basal disc, a cushion block, a water outlet, a water filling port and a test box. The test box comprises a test box body and a detachable top cover; heating resistance wires are distributed on the periphery and the bottom inside the test box body, and radial displacement sensors are distributed in the periphery center and the inside of the test box body in a run-through manner; the water outlet and the water filling port are respectively arranged at the positions close to the bottoms of the two sides of the test box; the test box is characterized in that a temperature control-deformation monitoring module is arranged on the detachable top cover of the test box, two temperature sensors are arranged on two sides of the central axis of the detachable top cover, and an axial displacement sensor is connected under the detachable top cover; a permeable stone is placed at the bottom of the sample, a centering base plate is placed at the top of the sample, and cushion blocks are bonded around the sample, so that the contact surface of a pointer of the radial displacement sensor is flat. The temperature sensor, the displacement sensor and the heating resistance wire are uniformly regulated and controlled by a temperature control-deformation monitoring module on a detachable top cover of the test box, so that the expansion deformation of the sample under the dry-wet circulation condition is obtained.
Preferably, the size of the test box is 140mm multiplied by 110mm (length multiplied by width multiplied by height), and a layer of heating resistance wire is respectively arranged in the range of 10mm at the periphery and the bottom inside the test box body.
Preferably, the outer plate and the detachable top cover of the test box body are made of heat-insulating materials, and the inner plate is made of water-resisting heat-conducting materials.
Preferably, the radial displacement sensors are arranged at the center positions of the periphery of the test box body, four radial displacement sensors are arranged, pointers of the radial displacement sensors are abutted to cushion blocks on the periphery of the sample, contact positions of the pointers are adjusted through rear-end tightening screws, and measured data are transmitted to the temperature control-deformation monitoring module through the wireless module.
Preferably, the axial displacement sensor is arranged at the center of the lower end of the detachable top cover of the test box, and is in an integral structure with the upper end temperature control-deformation monitoring module, and the pointer of the axial displacement sensor abuts against the concave point on the centering base plate.
Preferably, the sample is a cylinder with the diameter of 50mm and the height of 50mm, and is placed in the center of the inside of the test box, the permeable stone is placed at the bottom of the sample, and the centering base plate is placed at the top of the sample, so that the position of the sample is ensured not to deviate.
Preferably, the temperature control-deformation monitoring module integrates temperature control and deformation monitoring functions, and the panel of the temperature control-deformation monitoring module displays the drying temperature of the test chamber, the axial monitoring displacement and the radial monitoring displacement.
Preferably, the temperature sensor is arranged on the detachable top cover of the test box, the temperature measuring end extends into the test box, and the measured data are transmitted to the temperature control-deformation monitoring module through wires.
The application provides a wet-dry circulation system for rock expansion test uses the step including:
at first, open the proof box and can dismantle the top cap, the flexible distance of radial displacement sensor around the experimental box of adjustment is placed the permeable stone in proof box bottom central point and is put prefabricated sample on the permeable stone again, and the flexible distance of radial displacement sensor around the experimental box of adjustment is adjusted again, and the pointer contact surface level of radial displacement sensor is ensured at the position bonding cushion of sample and radial displacement sensor pointer contact simultaneously. And then, placing the centering basal disc on the top of the sample, covering the test box with a detachable top cover, and adjusting the telescopic distance of the axial displacement sensor through a button on the temperature control-deformation monitoring module to ensure that a pointer of the axial displacement sensor is just contacted with the concave point of the centering basal disc. And (3) resetting the reading of the displacement sensor on the temperature control-deformation monitoring module, then closing the water outlet, opening a water injection port switch, and injecting water into the box by an external water pipe until the sample is submerged. And (3) immersing the sample for a specified time, displaying the radial deformation and the axial deformation through the temperature control-deformation monitoring module, and opening a water outlet switch to discharge water in the test box after immersion. And then a heating switch of the test box is turned on, the heating resistance wire is used for heating to a specified temperature to dry the sample, meanwhile, the temperature in the test box is monitored in real time by using a temperature sensor, and the constant temperature state in the box body is automatically regulated and controlled by a temperature control-deformation monitoring module. And finally, obtaining the change data of the radial and axial deformation of the sample along with the time on a display screen of the temperature control-deformation monitoring module.
Compared with the prior art, the method has the following beneficial effects:
this application will do both combinations of soaking and the stoving condition of wet circulation condition down rock expansion test, has solved the expansion test and has done wet circulation in-process test step loaded down with trivial details, the operation scheduling problem of inconvenience, can carry out real-time supervision and accurate measurement to the sample deflection under the wet circulation effect is done to different numbers, reduces the interference of human factor to the test result, provides more accurate result and convenient operation for the rock expansibility is experimental.
Drawings
In order to more clearly illustrate the technical solutions in the present application or the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a schematic three-dimensional structure of the present application;
FIG. 2 is a front view of the present application;
FIG. 3 is a side view of the present application;
FIG. 4 is a top view of the present application;
FIG. 5 is a three-dimensional schematic illustration of the connection of the internal components of the present application;
FIG. 6 is a detail view of the axial displacement sensor;
fig. 7 is a detailed view of the radial displacement sensor.
In the figure: 1. a temperature control-deformation monitoring module; 2-1, a first temperature sensor; 2-2, a second temperature sensor; 3. a removable top cover; 4. heating resistance wires; 5. centering the basal disc; 6-1, a first radial displacement sensor; 6-2, a radial displacement sensor II; 6-3, a radial displacement sensor III; 6-4, a radial displacement sensor IV; 7. a water outlet; 8. a water injection port; 9. a permeable stone; 10. a sample; 11-1, a first cushion block; 11-2, a second cushion block; 11-3, a cushion block III; 11-4, and a cushion block IV; 12. an axial displacement sensor; 13. and (4) testing the box body.
Detailed Description
To make the purpose, technical solution and advantages of the present application more apparent, the present application is further described in detail below with reference to examples and drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present application and are not used as limitations of the present application.
Fig. 1-4 show that the dry-wet circulation system for the rock expansion test of the present application includes a temperature control-deformation monitoring module 1, a heating resistance wire 4, a centering base plate 5, a water outlet 7, a water filling port 8, a permeable stone 9, a sample 10, an axial displacement sensor 12, a temperature sensor, a radial displacement sensor, a cushion block and a test box. The temperature sensor comprises a first temperature sensor 2-1 and a second temperature sensor 2-2; the radial displacement sensor comprises a first radial displacement sensor 6-1, a second radial displacement sensor 6-2, a third radial displacement sensor 6-3 and a fourth radial displacement sensor 6-4; the cushion block comprises a first cushion block 11-1, a second cushion block 11-2, a third cushion block 11-3 and a fourth cushion block 11-4; the test box comprises a test box body 13 and a detachable top cover 3; the water outlet 7 and the water filling port 8 are respectively arranged at the positions close to the bottoms of the two sides of the test box; heating resistance wires 4 are distributed on the periphery and the bottom inside the test box, and radial displacement sensors are distributed on the periphery center and the inside of the outer part of the test box body 13 in a run-through manner; the test box is characterized in that a temperature control-deformation monitoring module 1 is arranged on a detachable top cover 3 of the test box, a first temperature sensor 2-1 and a second temperature sensor 2-2 are arranged on two sides of the central axis of the detachable top cover 3, and an axial displacement sensor 12 is connected under the detachable top cover; a permeable stone 9 is placed at the bottom of the sample 10, a centering base plate 5 is placed at the top of the sample 10, and cushion blocks are bonded around the sample 10, so that the contact surface of a pointer of the radial displacement sensor is flat.
The size of the test box is 140mm multiplied by 110mm (length multiplied by width multiplied by height), and a layer of heating resistance wire 4 is respectively arranged in the range of 10mm at the periphery and the bottom inside the test box.
The outer plate of the test box body 13 and the detachable top cover 3 are made of heat-insulating materials, and the inner plate is made of water-resisting heat-conducting materials.
The radial displacement sensors are arranged at the center positions of the periphery of the test box body 13 and respectively comprise a radial displacement sensor I6-1, a radial displacement sensor II 6-2, a radial displacement sensor III 6-3 and a radial displacement sensor IV 6-4, pointers of the radial displacement sensors are abutted to cushion blocks on the periphery of the sample 10, contact positions of the pointers are adjusted through rear-end tightening screws, and measured data are transmitted to the temperature control-deformation monitoring module 1 through the wireless module.
The axial displacement sensor 12 is arranged at the center of the lower end of the detachable top cover 3 of the test box and is of an integral structure with the upper end temperature control-deformation monitoring module 1, and the pointer of the axial displacement sensor 12 abuts against the concave point on the centering base plate 5.
The temperature control-deformation monitoring module 1 integrates temperature control and deformation monitoring functions, and displays the drying temperature of the test box, the axial monitoring displacement and the radial monitoring displacement on a panel.
The temperature sensor is arranged on the detachable top cover 3 of the test box, the temperature measuring end extends into the test box, and measured data are transmitted to temperature control-deformation monitoring through wires.
The application provides a use method of a dry-wet circulation system for a rock expansion test, which comprises the following steps:
at first open test box and can dismantle top cap 3, the flexible distance of radial displacement sensor around the test box is installed in the adjustment, places permeable stone 9 in test box bottom central point and puts prefabricated sample 10 on permeable stone 9 again, adjusts the flexible distance of radial displacement sensor around the test box again, and the pointer contact surface level of radial displacement sensor is ensured at the position bonding cushion of sample 10 and radial displacement sensor pointer contact simultaneously. Then, the centering base disc 5 is placed on the top of the test sample 10, the test box is covered, the top cover 3 can be detached, and the telescopic distance of the axial displacement sensor 12 is adjusted through a button on the temperature control-deformation monitoring module 1, so that the pointer of the axial displacement sensor is ensured to be just contacted with the concave point of the centering base disc 5. And (3) resetting the reading of the displacement sensor on the temperature control-deformation monitoring module 1, then closing the water outlet 7, opening the switch of the water filling port 8, and filling water into the box by using an external water pipe until the sample 10 is submerged. And (3) immersing the test sample 10 for a specified time, displaying the radial deformation and the axial deformation through the temperature control-deformation monitoring module 1, and opening a switch of the water outlet 7 after immersion to discharge water in the test box. And then a heating switch of the test box is turned on, the heating resistance wire 4 is used for heating to a specified temperature to dry the sample 10, meanwhile, the temperature in the test box is monitored in real time by utilizing the first temperature sensor 2-1 and the second temperature sensor 2-2, and the constant temperature state in the test box is automatically regulated and controlled by the temperature control-deformation monitoring module 1. And finally, obtaining the data of the radial and axial deformation of the sample along with the change of time on a display screen of the temperature control-deformation monitoring module 1. The test steps of one dry-wet cycle are carried out, and if the dry-wet cycle is carried out for multiple times, the operations of soaking and drying the sample can be repeated.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. A dry-wet circulation system for a rock expansion test is characterized by comprising a temperature control-deformation monitoring module (1), a heating resistance wire (4), a centering base plate (5), a water outlet (7), a water injection port (8), a permeable stone (9), a sample (10), an axial displacement sensor (12), a temperature sensor, a radial displacement sensor, a cushion block and a test box;
the test box comprises a test box body (13) and a detachable top cover (3); heating resistance wires (4) are distributed on the periphery and the bottom inside the test box, and radial displacement sensors are distributed on the periphery center and the inside of the outside of the test box body (13) in a run-through manner; a temperature control-deformation monitoring module (1) is arranged on the detachable top cover (3) of the test box, a first temperature sensor (2-1) and a second temperature sensor (2-2) are arranged on two sides of the central axis of the detachable top cover (3), and an axial displacement sensor (12) is connected under the detachable top cover; a permeable stone (9) is placed at the bottom of the sample (10), a centering base plate (5) is placed at the top of the sample (10), and cushion blocks are bonded around the sample (10).
2. The dry-wet circulation system for the rock expansion test is characterized in that the length, the width and the height of the test box are 140mm, 140mm and 110mm, and a layer of heating resistance wire (4) is arranged in the range of 10mm on the periphery and the bottom of the test box.
3. The dry-wet cycle system for the rock expansion test of claim 1, wherein the outer plate and the detachable top cover (3) of the test box body (13) are made of heat insulating materials, and the inner plate is made of water-proof heat conducting materials.
4. The dry-wet circulation system for the rock expansion test is characterized in that the radial displacement sensors are mounted at the central positions of the periphery of the test box body (13) and respectively comprise a first radial displacement sensor (6-1), a second radial displacement sensor (6-2), a third radial displacement sensor (6-3) and a fourth radial displacement sensor (6-4), pointers of the radial displacement sensors abut against cushion blocks on the periphery of the test sample (10), contact positions of the pointers are adjusted through rear-end loose screws, and measured data are transmitted to the temperature control-deformation monitoring module (1) through the wireless module.
5. The dry-wet cycle system for the rock expansion test is characterized in that the axial displacement sensor (12) is arranged at the center of the lower end of the detachable top cover (3) of the test box and is integrated with the upper end temperature control-deformation monitoring module (1), and the pointer of the axial displacement sensor (12) abuts against a concave point on the centering base plate (5).
6. The dry-wet cycle system for rock expansion test according to claim 1, wherein the test specimen (10) is a cylinder with a diameter of 50mm and a height of 50mm, and is placed in the center of the inside of the test chamber, the permeable stone (9) is placed at the bottom of the test specimen (10), and the centering base plate (5) is placed at the top of the test specimen (10).
7. The dry-wet cycle system for rock expansion test according to claim 1, wherein the temperature control-deformation monitoring module (1) integrates temperature control and deformation monitoring functions, and displays on a panel the test chamber drying temperature, axial monitoring displacement and radial monitoring displacement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222796278.7U CN218674983U (en) | 2022-10-23 | 2022-10-23 | Dry-wet circulation system for rock expansion test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222796278.7U CN218674983U (en) | 2022-10-23 | 2022-10-23 | Dry-wet circulation system for rock expansion test |
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| Publication Number | Publication Date |
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| CN218674983U true CN218674983U (en) | 2023-03-21 |
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| CN202222796278.7U Active CN218674983U (en) | 2022-10-23 | 2022-10-23 | Dry-wet circulation system for rock expansion test |
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- 2022-10-23 CN CN202222796278.7U patent/CN218674983U/en active Active
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