CN211013847U - Triaxial measurement system for measuring rock water-swelling capacity - Google Patents
Triaxial measurement system for measuring rock water-swelling capacity Download PDFInfo
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- CN211013847U CN211013847U CN201922042527.1U CN201922042527U CN211013847U CN 211013847 U CN211013847 U CN 211013847U CN 201922042527 U CN201922042527 U CN 201922042527U CN 211013847 U CN211013847 U CN 211013847U
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Abstract
The utility model relates to a rock expansion test technical field, concretely relates to measure triaxial measurement system of rock water swelling capacity. Including test box body, rock monomer and pressure sensor to the body center of test box body is three-dimensional rectangular coordinate system as the origin of coordinates establishment, respectively is equipped with at least one test passageway along three coordinate axis direction of three-dimensional rectangular coordinate system inside the test box body, and the rock monomer is square rock, and fixed the coincidence department of placing in each test passageway is equipped with pressure sensor and movable locating part in each test passageway, and movable locating part extrudees pressure sensor to be fixed on the rock monomer, is equipped with the water injection passageway in the bottom of test box body, the water injection passageway communicates the free bottom surface of rock and the outside of test box body. The utility model discloses can simulate more real open-air rock stress environment, require to record the ascending bulging force of rock triaxial side according to actual conditions, be favorable to judging operating condition and impel relevant research.
Description
Technical Field
The utility model relates to a rock expansion test technical field, concretely relates to measure triaxial measurement system of rock water swelling capacity.
Background
After the rock is exposed to water, a series of physical and chemical reactions occur, which cause the volume expansion and the change of mechanical properties of the rock. Engineering defines one class of rocks that are subject to volume increase, fragmentation and decomposition over time under the physicochemical action of water as swelling rocks. The expansive rock has strong expansion performance, and when the rock mass is disturbed, particularly when meeting water, the properties are changed greatly, volume expansion is generated, huge expansion pressure is generated on the structure, the stability of the engineering is seriously influenced, and geological disasters can be caused. The experimental test of rock expansion is an important work in the field of geotechnical engineering. The rock expansibility test mainly comprises an expansibility test and an expansibility test, wherein the expansibility test is used for measuring the expansibility of the expansive rock which deforms axially after encountering water, and the expansibility test is used for measuring the axial expansibility of the expansive rock which deforms in a constrained manner after encountering water.
The method for testing the expansion force in the existing rock test specification is roughly as follows: firstly, a rock sample is processed into a cylinder with a specified size, then the cylinder is placed into a cylindrical metal lantern ring for locking, and the side direction of the cylindrical sample is controlled by the lantern ring not to expand and deform. And (3) mounting a base plate, a pressure sensor, a press machine and a dial indicator on the top surface of the sample, and adding water to perform an expansive force test. When the sample absorbs water and expands and the volume becomes larger, the reading of the dial indicator becomes larger, and at the moment, a counter force is applied by using a press machine immediately to press the expansion deformation back. The above steps are repeated until the sample does not expand any more within a certain period of time, and at this time, the total force applied by the pressure sensor to press the sample back to the original volume is the measured expansion force.
The expansion force measured by the method is the maximum expansion force of the cylindrical sample in the axial direction, and when the lateral deformation of the sample is controlled by the lantern ring, the lateral expansion force of the sample is not measured. In practical engineering, the pressure applied to the underground rock comes from all directions, the restriction applied to the underground rock also comes from all directions, and the expansion force generated by the rock also affects all directions. In addition, the external pressure on the rock at the side slopes, pit slopes, etc. is more complicated. The existing method cannot measure all directions so as to correspond to actual engineering conditions under various conditions.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model provides a measure triaxial measurement system of rock water swelling power, when it was used, can simulate more real open-air rock stress environment, required the upward bulging force of record rock triaxial side according to actual conditions, be favorable to judging operating condition and impel relevant research.
The utility model discloses the technical scheme who adopts does:
a triaxial measuring system for measuring rock water-swelling capacity comprises a testing box body, a rock single body and a pressure sensor, the testing box body is a square box body, a three-dimensional rectangular coordinate system is established by taking the body center of the testing box body as the origin of coordinates, at least one test channel is respectively arranged in the test box body along three coordinate axis directions of the three-dimensional rectangular coordinate system, the test channels penetrate from the body center of the test box body to the outer surface of the test box body, the single rock body is square rock, which is fixedly arranged at the central position in the testing box body, and the rock single body is positioned at the superposition position of each testing channel, a pressure sensor and a movable limiting piece are arranged in each testing channel, the movable limiting piece extrudes and fixes the pressure sensor on the rock single body, the bottom of the testing box body is provided with a water injection channel, and the water injection channel is communicated with the bottom surface of the rock monomer and the outside of the testing box body.
Preferably, the left side, the right side, the front side, the rear side and the top of the rock single body are provided with test channels.
Preferably, as for the above technical scheme, at least one of the two testing channels on the left side and the right side of the rock single body is provided with a pressure sensor, at least one of the two testing channels on the front side and the rear side of the rock single body is provided with a pressure sensor, and the testing channel on the top of the rock single body is provided with a pressure sensor.
Preferably, the test channels are internally provided with a watertight cushion block, the watertight cushion block is arranged between the movable limiting piece and the rock single body in the test channel with the pressure sensor, and the movable limiting piece directly extrudes and fixes the watertight cushion block on the rock single body in the test channel without the pressure sensor.
Preferably, the shapes of the waterproof cushion block and the movable limiting piece are matched with the shape of the test channel.
Preferably, the surfaces of the waterproof cushion block and the movable limiting piece are smooth planes.
As above-mentioned technical scheme's preferred, the free bottom of rock is equipped with the cushion that permeates water, and the cushion that permeates water inlays to be located the test box body, is equipped with a plurality of holes of permeating water in the cushion that permeates water, and the hole bottom of permeating water communicates with water injection channel, and the hole top of permeating water leads to the free bottom surface of rock.
Preferably, the top surface of the water permeable cushion block is lower than the bottom surface of the test channel, so that a rock groove is formed at the top of the water permeable cushion block, and the rock monomer is arranged in the rock groove.
Preferably, the movable limiting piece is movably connected with the test box body, and the rock single body can be taken out from the test channel.
The utility model has the advantages that:
the utility model discloses a water injection passageway carries out outside ration water injection, outside water injection is absorbed the back by square rock monomer, the rock monomer begins the inflation, and to producing the inflation extrusion all around, corresponding inflation pressure is measured to the ascending pressure sensor of rock monomer triaxial direction, and pass to outside instrument with corresponding inflation pressure signal, accomplish the triaxial direction of rock monomer in the soaking expansion stress automatic synchronization measurement that absorbs water, replace traditional manual measurement with pressure sensor, can effectively improve measurement accuracy, and carry out outside ration water injection through water injection passageway, be convenient for measure rock monomer inflation force and the real-time change data of the volume of absorbing water, simultaneously according to actual conditions requirement record the ascending bulging force of rock triaxial direction, can simulate more real open-air rock stress environment, be favorable to judging actual working condition and impel relevant research.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the arrangement of the water permeable cushion block in the test box in example 3;
fig. 3 is a schematic structural view of the water permeable mat in example 3.
In the figure: 1. testing the box body; 2. a test channel; 3. a rock monolith; 4. a water permeable cushion block; 5. a water-impermeable cushion block; 6. a pressure sensor; 7. a movable limit piece; 8. a water injection channel; 9. water permeable holes; 10. rock groove.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and specific embodiments. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Specific structural and functional details disclosed herein are merely illustrative of example embodiments of the invention. The present invention may, however, be embodied in many alternate forms and should not be construed as limited to the embodiments set forth herein.
It should be understood that the terms first, second, etc. are used merely for distinguishing between descriptions and are not intended to indicate or imply relative importance. Although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of example embodiments of the present invention.
It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, B exists alone, and A and B exist at the same time, and the term "/and" is used herein to describe another association object relationship, which means that two relationships may exist, for example, A/and B, may mean: a alone, and both a and B alone, and further, the character "/" in this document generally means that the former and latter associated objects are in an "or" relationship.
It should be understood that in the description of the present invention, the terms "upper", "vertical", "inner", "outer", and the like, refer to the orientation or positional relationship that is conventionally used to place the product of the present invention, or that is conventionally understood by those skilled in the art, and are used merely to facilitate the description of the present invention and to simplify the description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered as limiting the present invention.
It will be understood that when an element is referred to as being "connected," "connected," or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may be present. In contrast, when an element is referred to as being "directly adjacent" or "directly coupled" to another element, there are no intervening elements present. Other words used to describe the relationship between elements should be interpreted in a similar manner (e.g., "between … …" versus "directly between … …", "adjacent" versus "directly adjacent", etc.).
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes," and/or "including," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, and/or groups thereof.
It should also be noted that, in some alternative implementations, the functions/acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may, in fact, be executed substantially concurrently, or the figures may sometimes be executed in the reverse order, depending upon the functionality/acts involved.
In the following description, specific details are provided to facilitate a thorough understanding of example embodiments. However, it will be understood by those of ordinary skill in the art that the example embodiments may be practiced without these specific details. For example, systems may be shown in block diagrams in order not to obscure the examples in unnecessary detail. In other instances, well-known processes, structures and techniques may be shown without unnecessary detail in order to avoid obscuring example embodiments.
Example 1:
the embodiment provides a triaxial measurement system for measuring water swelling capacity of rock, as shown in fig. 1:
the testing device comprises a testing box body 1, a rock single body 3 and a pressure sensor 6, wherein the testing box body 1 is a square box body, a three-dimensional rectangular coordinate system is established by taking the body center of the testing box body 1 as the origin of coordinates, at least one testing channel 2 is respectively arranged in the testing box body 1 along the three coordinate axis directions of the three-dimensional rectangular coordinate system, the testing channel 2 penetrates through the outer surface of the testing box body 1 from the body center of the testing box body 1, the rock single body 3 is a square rock and is fixedly arranged at the central position in the testing box body 1, the rock single body 3 is positioned at the superposition position of each testing channel 2, the pressure sensor 6 and a movable limiting part 7 are arranged in each testing channel 2, the pressure sensor 6 is fixed on the rock single body 10 in an extrusion manner by the movable limiting part 7, a water injection channel 8 is arranged at the bottom of the testing box body 1, the other end is communicated with the outside of the test box body 1.
In specific implementation, the water injection channel 8 is used for injecting water quantitatively from the outside, after the water injected from the outside is absorbed by the square rock single bodies 3, the rock single bodies 3 begin to expand, and generates expansion extrusion to the periphery, the pressure sensor 6 on the three-axis direction of the rock monomer 3 measures the corresponding expansion pressure, and transmits the corresponding expansion pressure signal to an external instrument to finish the automatic synchronous measurement of the water absorption expansion stress of the rock single body 3 in the three-axis direction in the soaking process, replaces the traditional manual measurement with the pressure sensor 6, can effectively improve the measurement precision, and can carry out external quantitative water injection through the water injection channel 8, thereby being convenient for measuring the real-time change data of the expansion force and the water absorption of the rock single body 3, and meanwhile, the expansive force of the rock in the three-axis direction is measured according to the requirement of the actual condition, so that a more real field rock stress environment can be simulated, and the method is favorable for judging the actual working condition and promoting the relevant research.
Example 2:
as an optimization of the above embodiment, the left side, the right side, the front side, the rear side and the top of the rock single body 3 are provided with the test channels 2. In two test passageways 2 on the left side and the right side of the rock single body 3, at least one test passageway 2 is internally provided with a pressure sensor 6, in two test passageways 2 on the front side and the rear side of the rock single body 3, at least one test passageway 2 is internally provided with a pressure sensor 6, and the test passageway 2 at the top of the rock single body 3 is internally provided with a pressure sensor 6. The interior of the test channel 2 is provided with a waterproof cushion block 5, the waterproof cushion block 5 is arranged between a movable limiting piece 7 and the rock single body 3 in the test channel 2 with the pressure sensor 6, and the movable limiting piece 7 directly extrudes and fixes the waterproof cushion block 5 on the rock single body 10 in the test channel 2 without the pressure sensor 6. The shapes of the waterproof cushion block 5 and the movable limiting piece 7 are matched with the shape of the testing channel 2. The surfaces of the waterproof cushion block 5 and the movable limiting piece 7 are smooth planes. During specific application, the shapes of the impermeable cushion block 5 and the movable limiting part 7 are matched with the shape of the testing channel 2, and the surfaces of the impermeable cushion block 5 and the movable limiting part 7 are smooth planes, so that the three-axis direction expansion force of the rock single body 3 can be fully transmitted to the pressure sensor 6, and the measuring error is reduced.
Example 3:
as the optimization to above-mentioned embodiment, as shown in fig. 2 to 3, the bottom of rock monomer 3 is equipped with the cushion 4 that permeates water, and the cushion 4 that permeates water inlays and locates in test box body 1, is equipped with a plurality of holes 9 of permeating water in the cushion 4 that permeates water, and the hole 9 bottom of permeating water communicates with water injection channel 8, and the hole 9 top of permeating water leads to 3 bottom surfaces of rock monomer, and during its application, the water injection area to rock monomer 3 can effectively be improved through the synchronous water injection in a plurality of holes 9 of permeating water, improves rock monomer 3's the efficiency of absorbing water. The top surface of the water permeable cushion block 4 is lower than the bottom surface of the test channel 2, so that a rock groove 10 is formed at the top of the water permeable cushion block 4, and the rock monomer 3 is arranged in the rock groove 10.
Example 4:
as an optimization of the above embodiment, the movable limiting piece 7 and the testing box body 1 form a movable connection, and after the movable limiting piece 7 is taken out from the testing channel 2, the rock single body 3 can be conveniently taken out from the testing channel 2.
The present invention is not limited to the above-mentioned alternative embodiments, and various other products can be obtained by anyone under the teaching of the present invention. The above detailed description should not be taken as limiting the scope of the invention, which is defined in the following claims, and which can be used to interpret the claims.
Claims (9)
1. Three-axis measuring system for measuring rock water-absorbing expansive force is characterized in that: the testing device comprises a testing box body (1), a rock single body (3) and a pressure sensor (6), wherein the testing box body (1) is a square box body, a three-dimensional rectangular coordinate system is established by taking the body center of the testing box body (1) as the origin of coordinates, at least one testing channel (2) is respectively arranged in the testing box body (1) along the three coordinate axis directions of the three-dimensional rectangular coordinate system, the testing channel (2) penetrates through the outer surface of the testing box body (1) from the body center of the testing box body (1), the rock single body (3) is a square rock and is fixedly arranged in the central position in the testing box body (1), the rock single body (3) is positioned at the superposition position of each testing channel (2), the pressure sensor (6) and a movable limiting part (7) are arranged in each testing channel (2), and the pressure sensor (6) is fixed on the rock single body by the movable limiting part, the bottom of the testing box body (1) is provided with a water injection channel (8), and the water injection channel (8) is communicated with the bottom surface of the rock single body (3) and the outside of the testing box body (1).
2. The triaxial measurement system for measuring rock water swelling capacity according to claim 1, wherein: the left side, the right side, the front side, the rear side and the top of the rock single body (3) are all provided with a test channel (2).
3. The triaxial measurement system for measuring rock water swelling capacity according to claim 2, wherein: in two test passageway (2) on rock monomer (3) left side and right side, be equipped with pressure sensor (6) in at least one test passageway (2), in two test passageway (2) of rock monomer (3) front side and rear side, be equipped with pressure sensor (6) in at least one test passageway (2), be equipped with pressure sensor (6) in test passageway (2) at rock monomer (3) top.
4. The triaxial measurement system for measuring rock water swelling capacity according to claim 3, wherein: the test channel (2) is internally provided with a waterproof cushion block (5), the waterproof cushion block (5) is arranged between the movable limiting piece (7) and the rock single body (3) in the test channel (2) with the pressure sensor (6), and the movable limiting piece (7) directly extrudes and fixes the waterproof cushion block (5) on the rock single body in the test channel (2) without the pressure sensor (6).
5. The triaxial measurement system for measuring rock water swelling capacity according to claim 4, wherein: the shapes of the waterproof cushion block (5) and the movable limiting piece (7) are matched with the shape of the testing channel (2).
6. The triaxial measurement system for measuring rock water swelling capacity according to claim 4, wherein: the surfaces of the impervious cushion block (5) and the movable limiting piece (7) are smooth planes.
7. The triaxial measurement system for measuring rock water swelling capacity according to claim 1, wherein: the bottom of rock monomer (3) is equipped with cushion (4) that permeates water, and cushion (4) that permeates water inlays and locates in test box body (1), is equipped with a plurality of holes (9) of permeating water in cushion (4) that permeates water, permeates water hole (9) bottom and water injection channel (8) intercommunication, and the hole (9) top of permeating water is led to rock monomer (3) bottom surface.
8. The triaxial measurement system for measuring water swelling capacity of rock according to claim 7, wherein: the top surface of the water permeable cushion block (4) is lower than the bottom surface of the test channel (2), so that a rock groove (10) is formed at the top of the water permeable cushion block (4), and the rock monomer (3) is arranged in the rock groove (10).
9. The triaxial measurement system for measuring rock water swelling capacity according to claim 1, wherein: the movable limiting piece (7) is movably connected with the testing box body (1), and the rock single body (3) can be taken out from the testing channel (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922042527.1U CN211013847U (en) | 2019-11-22 | 2019-11-22 | Triaxial measurement system for measuring rock water-swelling capacity |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201922042527.1U CN211013847U (en) | 2019-11-22 | 2019-11-22 | Triaxial measurement system for measuring rock water-swelling capacity |
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| CN211013847U true CN211013847U (en) | 2020-07-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114279922A (en) * | 2020-09-27 | 2022-04-05 | 中国石油天然气集团有限公司 | Shale water absorption testing device and testing method |
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2019
- 2019-11-22 CN CN201922042527.1U patent/CN211013847U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114279922A (en) * | 2020-09-27 | 2022-04-05 | 中国石油天然气集团有限公司 | Shale water absorption testing device and testing method |
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