Indoor shear test device for soil-rock interface

Abstract

The utility model relates to the technical field of rock-soil shear tests, and discloses a soil-rock interface indoor shear test device which comprises an upper box body and a lower box body, openings are formed in the two ends of the upper box body, an opening is formed in one end of the lower box body, and the opening end of the lower box body abuts against the opening end of the upper box body; the upper box body comprises a plurality of first side plates and a plurality of first baffles, a plurality of first sliding grooves are formed in the opposite sides of the first side plates, and the two sides of the first baffles are connected with the first sliding grooves; the lower box body comprises a plurality of second side plates, a plurality of second baffles and a bottom plate, a plurality of second sliding grooves are formed in the opposite sides of the second side plates, the two sides of the second baffles are connected with the second sliding grooves, and one sides of the second side plates are connected with the bottom plate. According to the indoor shear test device for the soil-rock interface, after a shear test is completed, a plurality of first baffles and a plurality of second baffles are disassembled, so that a rock-soil block is conveniently taken out; and the process is simple and convenient, and the shape of the rock-soil block cannot be damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of rock and soil shear test, in particular to an indoor shear test device for a soil-rock interface. Background Art

[0002] In various projects such as underground exploration, mineral mining, tunnel construction, and slope management, the shear strength of rock and soil is an important mechanical property. Especially when there is water, its shear strength will change greatly. Once unstable rock and soil collapses or slides, it will cause immeasurable losses to personnel and property. Therefore, it is very necessary to measure the shear strength of rock and soil materials.

[0003] The widely used shear box is divided into two parts, the upper shear box and the lower shear box, due to the needs of direct shear experiments. Before the experiment, the rock and soil need to be placed in the empty slot of the shear box, the lower box is fixed, and stress is applied to the upper box until the two shear boxes are misaligned and the sample is sheared, so as to measure its shear strength.

[0004] However, during the shear test, many rock and soil block samples will expand in volume under the action of shear stress, thereby increasing the friction between them and the inner wall of the shear box groove. As a result, the rock and soil in the box cannot be easily taken out after the experiment. It is often necessary to use tools to break them before taking them out. The process is cumbersome and affects efficiency, and the sample blocks taken out after being broken will not be able to reflect the failure form of the rock and soil blocks in the direct shear test. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model proposes an indoor shear test device for soil-rock interface to solve the above technical problems.

[0006] A soil-rock interface indoor shear test device comprises an upper box body and a lower box body, the upper box body is provided with openings at opposite ends, the lower box body is also provided with an opening at one end, and the open end of the lower box body abuts against the open end of the upper box body; the upper box body comprises a plurality of first side plates and a plurality of first baffles, a plurality of first slide grooves are provided on opposite sides of the plurality of first side plates, and the two sides of the first baffles are respectively connected to the corresponding first slide grooves; the lower box body comprises a plurality of second side plates, a plurality of second baffles and a bottom plate, a plurality of second slide grooves are provided on opposite sides of the plurality of second side plates, the two sides of the second baffles are respectively connected to the corresponding second slide grooves, and the side of the second side plate away from the first side plate is connected to the bottom plate.

[0007] Furthermore, a plurality of mounting components are arranged on the upper box body.

[0008] Further, the installation assembly includes a first fixing block and a plug-in column, the first fixing block is arranged on the first side plate, and an end of the first fixing block facing the lower box body is provided with a receiving groove, the plug-in column is installed in the receiving groove and cooperates with the receiving groove, and a sliding rod is arranged at one end of the plug-in column, and an end of the sliding rod away from the lower box body passes through the receiving groove and emerges from the first fixing block;

[0009] A second fixing block is arranged on one side of the second side plate close to the first fixing block. A plugging slot is provided in the second fixing block, and the plugging column is plugged into the plugging slot.

[0010] Furthermore, a plurality of guide grooves are provided in the plug-in slot, and a plurality of guide blocks are provided on the outer side of the plug-in column, and the guide blocks are arranged in cooperation with the guide grooves.

[0011] Furthermore, a plurality of placement grooves are provided in the accommodating groove, and the guide block is located in the placement grooves.

[0012] Furthermore, a plurality of limiting grooves are provided in the plug-in groove, the limiting grooves are communicated with the guide grooves, and the limiting grooves are matched with the guide blocks.

[0013] Furthermore, the number of the guide grooves, guide blocks, placement grooves and limiting grooves is four each.

[0014] Furthermore, a compression spring is installed in the plug-in slot, and one end of the compression spring away from the bottom wall of the plug-in slot is arranged in cooperation with the plug-in column.

[0015] The utility model adopting the above technical solution has the following advantages:

[0016] The utility model is provided by the cooperation of the upper box body, the lower box body, the first side plate, the first baffle plate, the first slide groove, the second side plate, the second baffle plate and the second slide groove. After the shearing test is completed, the rock and soil block can be conveniently taken out by disassembling the plurality of first baffle plates and the plurality of second baffle plates; and the process is simple and will not damage the shape of the rock and soil block itself. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the specific implementation of the utility model, the following will briefly introduce the drawings required for use in the specific implementation. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0018] Figure 1 This is a structural schematic diagram of an indoor shear test device for soil-rock interface of the utility model (Example 1);

[0019] Figure 2This is a structural schematic diagram of an upper box in a soil-rock interface indoor shear test device of the utility model (Example 1);

[0020] Figure 3 It is a structural schematic diagram of a plug-in column and a sliding rod in an indoor shear test device for soil-rock interface of the utility model;

[0021] Figure 4 This is a schematic diagram of the structure of the lower box in a soil-rock interface indoor shear test device of the utility model (Example 1);

[0022] Figure 5 for Figure 4 A schematic diagram of the enlarged structure of the middle part A;

[0023] Figure 6 This is a structural schematic diagram of a soil-rock interface indoor shear test device of the utility model (Example 2);

[0024] Reference numerals:

[0025] Upper box 1, lower box 2,

[0026] The first side plate 31, the first baffle plate 32, the first slide groove 33,

[0027] The second side plate 41, the second baffle plate 42, the bottom plate 43, the second slide groove 44,

[0028] The first fixing block 51, the plug-in column 52, the receiving groove 53, the sliding rod 54, the second fixing block 55, the plug-in groove 56,

[0029] Guide groove 61, guide block 62, placement groove 63, limit groove 64,

[0030] Compression spring 7. DETAILED DESCRIPTION

[0031] The following embodiments of the technical solution of the utility model are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the utility model, and are therefore only used as examples, and cannot be used to limit the protection scope of the utility model.

[0032] Embodiment 1:

[0033] like Figure 1 to Figure 5As shown, a soil-rock interface indoor shear test device of the utility model comprises an upper box body 1 and a lower box body 2, the upper box body 1 is located above the lower box body 2, the upper box body 1 is provided with openings at the opposite ends, the top of the lower box body 2 is also provided with an opening, and the opening end of the lower box body 2 is abutted against the opening end of the upper box body 1, and an upper loading steel plate (not shown in the figure) is installed on the top of the upper box body 1; the upper box body 1 comprises two first side plates 31 and two first baffles 32, and the two first side plates 31 are provided with openings on opposite sides thereof. There are two first slide grooves 33, and the left and right sides of the first baffle plate 32 are respectively connected to the corresponding first slide grooves 33; the lower box body 2 includes two second side panels 41, two second baffle plates 42 and a bottom plate 43, and two second slide grooves 44 are provided on the opposite sides of the two second side panels 41, and the left and right sides of the second baffle plate 42 are respectively connected to the corresponding second slide grooves 44, and the side of the second side panel 41 away from the first side panel 31 is connected to the bottom plate 43, and the first baffle plate 32 and the second baffle plate 42 are both made of acrylic panels.

[0034] The upper box body 1, the lower box body 2, the first side plate 31, the first baffle plate 32, the first slide groove 33, the second side plate 41, the second baffle plate 42 and the second slide groove 44 are arranged in coordination. After the shearing test is completed, the rock and soil block can be conveniently taken out by disassembling the plurality of first baffle plates 32 and the plurality of second baffle plates 42; and the process is simple and will not damage the shape of the rock and soil block itself.

[0035] In some embodiments, four installation components are disposed on the upper box body 1 , and the four installation components are respectively installed on the front and rear sides of the upper box body 1 .

[0036] In some embodiments, the mounting assembly includes a first fixing block 51 and a plug-in column 52. The first fixing block 51 is disposed on the first side plate 31, and a receiving groove 53 is opened at one end of the first fixing block 51 facing the lower box body 2. The plug-in column 52 is slidably installed in the receiving groove 53 and cooperates with the receiving groove 53. A sliding rod 54 is connected to the top of the plug-in column 52. The end of the sliding rod 54 away from the lower box body 2 passes through the receiving groove 53 and emerges from the first fixing block 51. A pressing handle is connected to the end of the sliding rod 54 located outside the first fixing block 51. There is a certain friction force between the plug-in column 52 and the receiving groove 53, and the friction force is greater than the sum of the gravity of the plug-in column 52, the sliding rod 54 and the pressing handle.

[0037] Four second fixing blocks 55 are disposed on one side of the second side plate 41 close to the first fixing block 51 . The four second fixing blocks 55 correspond to the four first fixing blocks 51 . Insertion slots 56 are defined in the second fixing blocks 55 , and the insertion posts 52 are inserted into the insertion slots 56 .

[0038] After the upper box body 1 and the lower box body 2 are installed against each other, the operator can press the pressure handle downward to push the sliding rod 54 and the plug-in column 52 to slide to the outside of the accommodating groove 53, and then make the plug-in column 52 enter the plug-in groove 56 to complete the plug-in, which is beneficial to improve the firmness of the installation of the upper box body 1 and the lower box body 2, and facilitate placing the rock and soil block in the middle of the upper box body 1 and the lower box body 2.

[0039] In some embodiments, a plurality of guide grooves 61 are defined in the plug-in slot 56 , and a plurality of guide blocks 62 are disposed on the outer side of the plug-in column 52 . The guide blocks 62 are configured to cooperate with the guide grooves 61 .

[0040] When the plug-in column 52 slides downward to be plugged into the plug-in slot 56 , the guide block 62 will enter the guide slot 61 , thereby limiting the sliding of the plug-in column 52 .

[0041] In some embodiments, a plurality of placement grooves 63 are provided in the accommodating groove 53 , and the guide block 62 is located in the placement groove 63 and cooperates with the placement groove 63 . There is a certain friction force between the guide block 62 and the placement groove 63 , and the friction force is greater than the gravity of the guide block 62 .

[0042] This facilitates placing the guide block 62 in the receiving groove 53 .

[0043] In some embodiments, a plurality of limiting grooves 64 are further provided in the plug-in groove 56 . The limiting grooves 64 are communicated with the guide grooves 61 , and the limiting grooves 64 are cooperated with the guide blocks 62 .

[0044] When the plug-in column 52 is plugged into the plug-in slot 56, the operator rotates the pressure handle clockwise, thereby driving the sliding rod 54, the plug-in column 52 and the guide block 62 to rotate, and then the guide block 62 enters the limit slot 64 through the guide slot 61, thereby limiting the sliding of the plug-in column 52, which is beneficial to further improve the firmness of the installation of the upper box body 1 and the lower box body 2.

[0045] In some embodiments, the number of the guide groove 61, the guide block 62, the placement groove 63 and the limiting groove 64 are all four.

[0046] In some embodiments, a compression spring 7 is installed in the plug-in slot 56 , and one end of the compression spring 7 away from the bottom wall of the plug-in slot 56 is arranged in cooperation with the plug-in column 52 .

[0047] When the plug-in column 52 enters the plug-in slot 56, it will conflict with the compression spring 7, thereby squeezing the compression spring 7, and then limiting the sliding of the plug-in column 52 through the guide groove 61; when the guide groove 61 no longer restricts the plug-in column 52, the plug-in column 52 will move to the outside of the plug-in slot 56 under the elastic action of the compression spring 7, thereby facilitating the operator to pull the plug-in column 52 out of the plug-in slot 56.

[0048] When in use, the upper box body 1 and the lower box body 2 are first installed against each other, and then the operator presses the pressure handle downward to push the sliding rod 54 and the plug-in column 52 to slide to the outside of the accommodating groove 53, thereby allowing the plug-in column 52 to enter the plug-in groove 56 to complete the plug-in.

[0049] Then, the pressing handle is rotated clockwise, thereby driving the sliding rod 54 , the plug-in column 52 and the guide block 62 to rotate, and then the guide block 62 enters the limiting groove 64 through the guide groove 61 , thereby limiting the sliding of the plug-in column 52 .

[0050] The rock and soil block can be placed in the middle of the upper box body 1 and the lower box body 2. After the rock and soil block is placed, the pressure handle is rotated counterclockwise so that the guide groove 61 no longer restricts the guide block 62 and the plug-in column 52. The plug-in column 52 will move to the outside of the plug-in groove 56 under the elastic action of the compression spring 7, making it convenient for the operator to pull the plug-in column 52 out of the plug-in groove 56 and then perform the shear test.

[0051] After the shearing is completed, the first baffle plate 32 and the second baffle plate 42 are disassembled and the rock and soil blocks are taken out.

[0052] Embodiment 2:

[0053] like Figure 6 As shown, the difference from Example 1 is that the installation assembly includes a pin and a first limiting hole, the first limiting hole is arranged on the first side plate 31, and four second limiting holes are arranged on the side of the second side plate 41 close to the first limiting hole, one end of the pin passes through the first limiting hole and the second limiting hole, and the pin is arranged in an inverted "L" shape.

[0054] When in use, the upper box body 1 and the lower box body 2 are first installed against each other, and then the operator passes one end of the pin through the first limit hole and the second limit hole to complete the installation of the upper box body 1 and the lower box body 2; the rock and soil block can be placed in the middle of the upper box body 1 and the lower box body 2. When the rock and soil block is placed, the pin is pulled out and the shear test is carried out.

[0055] After the shearing is completed, the first baffle plate 32 and the second baffle plate 42 are disassembled and the rock and soil blocks are taken out.

[0056] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A soil-rock interface indoor shear test device, characterized in that: include: An upper box body and a lower box body, wherein the upper box body has openings at two opposite ends, and one end of the lower box body also has an opening, and the opening end of the lower box body abuts against the opening end of the upper box body; The upper box body includes a plurality of first side plates and a plurality of first baffles, a plurality of first slide grooves are provided on opposite sides of the plurality of first side plates, and both sides of the first baffles are respectively connected to the corresponding first slide grooves; The lower box body includes multiple second side panels, multiple second baffles and a bottom plate. Multiple second slide grooves are opened on opposite sides of the multiple second side panels. Both sides of the second baffles are respectively connected to the corresponding second slide grooves. The side of the second side panel away from the first side panel is connected to the bottom plate.

2. The soil-rock interface indoor shear test device according to claim 1, characterized in that: A plurality of mounting components are arranged on the upper box body.

3. The soil-rock interface indoor shear test device according to claim 2, characterized in that: The mounting assembly includes a first fixing block and a plug-in column, wherein the first fixing block is arranged on the first side plate, and an end of the first fixing block facing the lower box body is provided with a receiving groove, the plug-in column is installed in the receiving groove and cooperates with the receiving groove, and a sliding rod is arranged at one end of the plug-in column, and an end of the sliding rod away from the lower box body passes through the receiving groove and emerges from the first fixing block; A plurality of second fixing blocks are arranged on one side of the second side plate close to the first fixing block. Insertion slots are arranged in the second fixing blocks, and the insertion posts are inserted into the insertion slots.

4. The soil-rock interface indoor shear test device according to claim 3, characterized in that: A plurality of guide grooves are provided in the plug-in slot, and a plurality of guide blocks are provided on the outer side of the plug-in column, and the guide blocks are arranged in cooperation with the guide grooves.

5. The soil-rock interface indoor shear test device according to claim 4, characterized in that: A plurality of placement grooves are provided in the accommodating groove, and the guide blocks are located in the placement grooves.

6. The soil-rock interface indoor shear test device according to claim 5, characterized in that: A plurality of limiting grooves are also provided in the plug-in groove, the limiting grooves are communicated with the guide grooves, and the limiting grooves are matched with the guide blocks.

7. The soil-rock interface indoor shear test device according to claim 6, characterized in that: The number of the guide groove, the guide block, the placement groove and the limiting groove are all four.

8. The soil-rock interface indoor shear test device according to claim 3, characterized in that: A compression spring is installed in the plug-in slot, and one end of the compression spring away from the bottom wall of the plug-in slot is arranged in cooperation with the plug-in column.

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