Lantern ring for testing expansion force and expansion rate of rock

Abstract

The utility model provides a lantern ring for testing expansive force and expansive rate of rock, which comprises two semi-rings, a sealing pin and a connecting unit, the sealing pin is detachably arranged, the two semi-rings and the sealing pin enclose to form an accommodating space for accommodating a rock sample core, and the connecting unit is used for connecting the semi-rings and the sealing pin into a whole. According to the utility model, the two semi-rings are connected in a split manner, and the sealing pins are inserted into the adjusting grooves of the two semi-rings, so that the sealing pins with different width sizes can be replaced according to the diameter size of the rock sample core, and the clamping diameter of the lantern ring can be finely adjusted, thereby improving the adaptability of the lantern ring and the rock sample core, and improving the rock sample core quality. And the accuracy of a test result is improved.

Description

Technical Field

[0001] This utility model belongs to the field of rock expansion testing technology, specifically relating to a collar for testing rock expansion force and expansion rate. Background Technology

[0002] Swelling rock refers to rock containing a large amount of hydrophilic clay minerals that undergoes significant swelling and deformation upon absorbing water. Swelling rock exhibits strong swelling characteristics and, under the physicochemical effects of water, is prone to volume increase, breakage, and decomposition over time, potentially affecting the stability of engineering projects. Therefore, testing the swelling properties of rock is an important task in geotechnical engineering. Rock swelling tests mainly include swelling rate tests and swelling force tests. The swelling rate test measures the axial deformation rate of swelling rock after exposure to water, while the swelling force test measures the axial swelling force that constrains the deformation trend of swelling rock after exposure to water.

[0003] Testing the swelling force and swelling rate of expansive rocks is an important means to understand their characteristics, predict engineering deformation and failure, guide engineering design, and study the mechanism of expansive rocks. Expansion force and swelling rate tests require relevant testing equipment. The samples used in the tests are core samples obtained from borehole drilling, typically around 50 mm in diameter. During the test, the core sample is placed inside the collar of the equipment and then immersed in water to test the deformation and swelling force of the core sample after water absorption.

[0004] Currently, there is only one standard size for the collar in soft rock expansion testing equipment on the market, with an inner hole size of 50mm, which cannot be changed. Because the size of rock core samples obtained from drilling varies (core diameters may be 49.6mm, 49.8mm, etc.), a gap exists between the core sample and the inner wall of the collar after it is placed inside. This ultimately introduces errors into the test results, affecting their accuracy. Utility Model Content

[0005] This invention provides a collar for testing rock expansion force and expansion rate, aiming to solve the problem in the prior art where the inner hole size of the collar is fixed and there is a gap after the sample core and the collar are fitted together, which will bring errors to the test.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a collar for testing rock swelling force and swelling rate, comprising:

[0007] Two semi-rings are arranged opposite each other. The mating surfaces of the semi-rings are provided with a receiving groove and an adjusting groove. The receiving groove is semi-cylindrical. The adjusting groove is located at the edge of the receiving groove and communicates with the receiving groove. Both the adjusting groove and the receiving groove pass through both ends of the semi-rings.

[0008] A sealing pin, elongated in shape, is detachably inserted into the adjusting groove. The side of the sealing pin adjacent to the receiving groove is arc-shaped. The arc-shaped surface of the sealing pin, along with the receiving grooves of the two semi-rings, together form the receiving space for the rock sample core.

[0009] A connecting unit, detachably connected between the two half-rings, is used to apply a preload force to the half-rings to bring the two half-rings closer together.

[0010] In one possible implementation, the semi-ring is further provided with a water-permeable hole, which extends through the wall thickness of the semi-ring and communicates with the receiving groove.

[0011] In one possible implementation, a permeable stone is provided on the side of the permeable hole adjacent to the receiving groove, and a water inlet pin is provided on the side of the permeable hole opposite to the receiving groove, the water inlet pin having a water inlet hole that extends through its own axis.

[0012] In one possible implementation, the permeable stone has an arc-shaped surface on the side adjacent to the receiving groove.

[0013] In one possible implementation, the end of the permeable hole adjacent to the receiving groove is an irregularly shaped hole, and the shape of the permeable stone is adapted to the irregularly shaped hole.

[0014] In one possible implementation, the inlet pin is threaded into the permeable hole.

[0015] In one possible implementation, multiple permeable holes are spaced apart along the height direction, and the permeable stones are arranged in corresponding positions within each permeable hole.

[0016] In one possible implementation, multiple permeable holes are spaced apart along the circumference of the semi-ring, and the permeable stones are arranged in corresponding positions within each permeable hole.

[0017] In one possible implementation, the semi-ring has a through mounting hole, and the connecting unit is a bolt that passes through the mounting hole.

[0018] In one possible implementation, multiple mounting holes are spaced apart along the height direction, and each bolt corresponds to one of the mounting holes.

[0019] Compared with the prior art, the beneficial effects of the collar for testing rock swelling force and swelling rate provided by this utility model are:

[0020] This invention provides a collar for testing the expansion force and expansion rate of rocks, comprising two half-rings, a sealing pin, and a connecting unit. The sealing pin is detachably installed. The two half-rings and the sealing pin together form a receiving space for accommodating a rock sample core. The connecting unit connects the half-rings and the sealing pin as a single unit. In this invention, the two half-rings are connected in a split manner, and the adjusting grooves of the two half-rings are used to insert the sealing pin. Different widths of sealing pins can be replaced according to the diameter of the rock sample core, allowing for fine-tuning of the collar's clamping diameter. This improves the compatibility between the collar and the rock sample core, thereby enhancing the accuracy of the test results. Attached Figure Description

[0021] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0024] Figure 1 A perspective view of a collar for testing rock swelling force and swelling rate provided in an embodiment of this application;

[0025] Figure 2 An exploded schematic diagram of a collar for testing rock expansion force and expansion rate provided in an embodiment of this application;

[0026] Figure 3 A front view of a collar for testing rock swelling force and swelling rate provided in an embodiment of this application;

[0027] Figure 4 for Figure 3 A cross-sectional view along the AA direction;

[0028] Figure 5 A half-sectional perspective view of a collar for testing rock swelling force and swelling rate provided in an embodiment of this application.

[0029] Explanation of reference numerals in the attached figures:

[0030] 10. Semi-ring; 11. Receiving groove; 12. Adjusting groove; 13. Mounting hole; 20. Sealing pin; 21. Arc-shaped surface; 30. Connecting unit; 40. Permeable stone; 50. Water inlet pin; 51. Water inlet hole. Detailed Implementation

[0031] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0032] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0033] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0034] To address the problem in existing technologies where gaps easily remain between fixed-size collars and sample cores, affecting the accuracy of test results, this application provides a collar for testing rock expansion force and expansion rate. This collar features a split, detachable design, allowing it to be adapted to rock sample cores of different diameters by replacing the sealing pin 20 with one of suitable size, thereby improving the accuracy of test results.

[0035] For details, please refer to Figures 1 to 5 This application provides a collar for testing the expansion force and expansion rate of rocks, including two semi-rings 10, a sealing pin 20, and a connecting unit 30. The two semi-rings 10 are arranged opposite to each other. The mating surfaces of the semi-rings 10 are provided with a receiving groove 11 and an adjusting groove 12. The receiving groove 11 is semi-cylindrical, and the adjusting groove 12 is located at the edge of the receiving groove 11 and communicates with the receiving groove 11. Both the adjusting groove 12 and the receiving groove 11 pass through both ends of the semi-rings 10. The sealing pin 20 is elongated and is detachably inserted into the adjusting groove 12. The side of the sealing pin 20 adjacent to the receiving groove 11 is an arc-shaped surface 21. The arc-shaped surface 21 of the sealing pin 20 and the receiving grooves 11 of the two semi-rings 10 together form a receiving space for the rock sample core. The connecting unit 30 is detachably connected between the two semi-rings 10 and is used to apply a pre-tightening force to the semi-rings 10 to bring them closer together.

[0036] Compared with the prior art, the beneficial effects of the collar for testing rock swelling force and swelling rate provided by the embodiments of this utility model are:

[0037] The rock expansion force and expansion rate testing collar provided in this embodiment includes two half-rings 10, a sealing pin 20, and a connecting unit 30. The sealing pin 20 is detachably installed. The two half-rings 10 and the sealing pin 20 enclose a receiving space for accommodating a rock sample core. The connecting unit 30 connects the half-rings 10 and the sealing pin 20 into one unit. In this invention, the two half-rings 10 are connected in a split manner, and the adjusting grooves 12 of the two half-rings 10 are used to insert the sealing pin 20. Different widths of the sealing pin 20 can be replaced according to the diameter of the rock sample core. The different widths of the sealing pin 20 can finely adjust the clamping diameter of the collar, thereby improving the compatibility between the collar and the rock sample core, and thus improving the accuracy of the test results.

[0038] To prevent misuse, labels or laser engravings of the corresponding specifications and models can be affixed to sealing pins of different widths.

[0039] Both the semi-ring 10 and the sealing pin 20 can be made of metal (such as stainless steel or cast iron), which has high structural strength and is not easily worn or deformed. The receiving groove 11 of the semi-ring 10 is semi-circular, and an adjusting groove 12 is provided on one or both sides of the receiving groove 11. The adjusting groove 12 is located at the edge of the receiving groove 11. After the two semi-rings 10 are put together, the two adjusting grooves 12 can also be merged. The merged groove is used to receive the sealing pin 20, so that the sealing pin can be inserted.

[0040] Specifically, the inner diameter of the two semi-rings 10 after mating can be 49.0 mm. The sealing pin 20 can be designed with various widths, such as 49.1 mm, 49.2 mm...50.0 mm, a total of ten specifications. Based on the actual size of the rock sample core, the corresponding specification of the sealing pin 20 is installed to ensure that the diameter of the collar and the rock sample core are compatible, thus improving the accuracy of the test results. The height of the semi-rings 10 can be 50 mm, 100 mm, etc., and the length of the sealing pin 20 corresponds to the height of the semi-rings 10.

[0041] The connecting unit 30 is detachably disposed between the two half-rings 10, and can be used to make the two half-rings 10 fit together tightly. The connecting unit 30 can be a cable tie, rope or other components.

[0042] Please see Figure 1 , Figure 2 and Figure 5 In some possible embodiments, the semi-ring 10 is also provided with water-permeable holes that penetrate the wall thickness of the semi-ring 10 and are connected to the receiving groove 11. During testing, the ring and the rock sample core need to be immersed in water to test the expansion force and expansion rate of the rock sample core after absorbing water. In order to allow water to better penetrate into the rock sample core, water-permeable holes are provided on the semi-ring 10.

[0043] There are no specific restrictions on the location, number, and arrangement of the permeable holes; users can set them according to their own needs.

[0044] Please see Figure 1 , Figure 2 and Figure 5 In some possible embodiments, a permeable stone 40 is provided on the side of the permeable hole adjacent to the receiving groove 11, and a water inlet pin 50 is provided on the side of the permeable hole away from the receiving groove 11. The water inlet pin 50 has a water inlet hole 51 that extends through its own axis. The permeable stone 40 is used for water infiltration, and at the same time, the permeable stone 40 can support the inner wall of the rock sample core. Since the permeable stone 40 is on the inner wall of the semi-ring 10, during installation, the two semi-rings 10 and the sealing pin 20 are first assembled together, the connecting unit 30 is installed, then the permeable stone 40 is placed in, and finally the rock sample core is placed in.

[0045] Please see Figure 2 In some possible embodiments, the permeable stone 40 has an arc-shaped surface 21 on the side adjacent to the receiving groove 11 to better fit the rock sample core.

[0046] Please see Figure 2 In some possible embodiments, the end of the permeable hole adjacent to the receiving groove 11 is an irregularly shaped hole, and the shape of the permeable stone 40 is adapted to the irregularly shaped hole. The irregularly shaped hole can be a square, triangular, polygonal, elliptical or other non-circular hole, the purpose of which is to prevent the permeable stone 40 from rotating in the permeable hole.

[0047] Please see Figure 1 and Figure 2 In some possible embodiments, to facilitate the installation of the water inlet pin 50, the water inlet pin 50 is threaded into the permeable hole, and the water inlet pin 50 abuts against the permeable stone 40, which can support and fit the rock sample core.

[0048] Please see Figure 2 and Figure 3 In some possible embodiments, multiple permeable holes are spaced apart along the height direction, and a permeable stone 40 is provided in each permeable hole. Multiple permeable holes are spaced apart along the circumference of the semi-ring 10, and a permeable stone 40 is provided in each permeable hole.

[0049] Please see Figure 2 and Figure 3 In some possible embodiments, the semi-ring 10 has a through mounting hole 13, and the connecting unit 30 is a bolt that passes through the mounting hole 13, making installation simple and convenient. Multiple mounting holes 13 can be formed on the semi-ring 10 from top to bottom, and a bolt passes through each mounting hole 13. The bolt is inserted from one side of one semi-ring 10 and threaded into the other semi-ring 10. Tightening the bolt securely connects the two semi-rings 10 together.

[0050] Please see Figure 1 , Figure 2 and Figure 4 In some possible embodiments, mounting holes 13 are provided at multiple intervals along the height direction, and bolts correspond one-to-one with mounting holes 13.

[0051] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0052] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0053] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0054] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0055] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0056] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0057] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Since these modifications and variations fall within the scope of the claims and their equivalents, this application also intends to include these modifications and variations.

[0058] The above description describes specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A collar for rock swell force and swell rate testing, characterized by, The utility model relates to a rock core container, comprising: two half rings (10) arranged opposite to each other, the half rings (10) are provided with a containing groove (11) and an adjusting groove (12) on the abutting surface, the containing groove (11) is semicylindrical, the adjusting groove (12) is arranged at the edge position of the containing groove (11) and communicates with the containing groove (11), and the adjusting groove (12) and the containing groove (11) both penetrate through the two ends of the half ring (10); a sealing pin (20) in strip shape, the sealing pin (20) is detachably inserted into the adjusting groove (12), one side of the sealing pin (20) adjacent to the containing groove (11) is a circular arc surface (21), and the circular arc surface (21) of the sealing pin (20) and the inner wall of the containing groove (11) of the two half rings (10) jointly enclose a containing space of a rock core; and a connecting unit (30) detachably connected between the two half rings (10) and used for applying a pre-tightening force to the half rings (10) to make the two half rings (10) close to each other.

2. The collar for testing swelling pressure and swelling rate of rock according to claim 1, characterized in that, The half ring (10) is further provided with a water permeable hole penetrating through the wall thickness of the half ring (10).

3. The ring for rock expansion force and swell ratio testing according to claim 2, characterized in that, The water permeable hole is provided with a water permeable stone (40) on the side adjacent to the containing groove (11), and is provided with a water inlet pin (50) on the side away from the containing groove (11), and the water inlet pin (50) has a water inlet hole (51) penetrating through the axial direction.

4. The ring for rock expansion force and swell ratio testing according to claim 3, characterized in that, The water permeable stone (40) has a circular arc surface (21) on the side adjacent to the containing groove (11).

5. The ring for rock expansion force and swell ratio testing of claim 3, wherein, The water permeable hole is a special-shaped hole on the end adjacent to the containing groove (11), and the water permeable stone (40) is matched with the special-shaped hole in shape.

6. The ring for testing swelling pressure and expansion of rock according to claim 3, wherein The water inlet pin (50) is screwed with the water permeable hole.

7. The ring for testing swelling pressure and expansion of rock according to claim 3, wherein A plurality of water permeable holes are arranged at intervals in the height direction, and the water permeable stones (40) are arranged one by one in the water permeable holes.

8. The ring for testing swelling pressure and expansion of rock according to claim 3, wherein A plurality of water permeable holes are arranged at intervals in the circumferential direction of the half ring (10), and the water permeable stones (40) are arranged one by one in the water permeable holes.

9. The ring for testing swelling pressure and expansion of rock according to claim 1, wherein The half ring (10) is provided with a mounting hole (13) penetrating through the wall thickness, and the connecting unit (30) is a bolt penetrating through the mounting hole (13).

10. The collar for testing swelling pressure and swelling rate of rock according to claim 9, wherein A plurality of mounting holes (13) are arranged at intervals in the height direction, and the bolts are one by one corresponding to the mounting holes (13).

Images