Series-size clay filling medium preparation device for realizing millimeter-level thickness control

Abstract

A series-size clay filling medium preparation device capable of achieving millimeter-level thickness control comprises a foundation slab, a filling groove, a filling stacking plate, a compaction stick and a horizontal bubble, the foundation slab is a base of a test device, a layer of film is placed on the base, and the compaction stick is arranged on the base. Then different types of superposition plates can be selected according to the size of the structural surface to freely splice the filling groove, so that the preparation of the continuous series of size filling structural surfaces is realized; the number of the filling stacking plates is selected according to the filling thickness, the thickness of the filling groove can be formed by vertically stacking the stacking plates with different thicknesses, and the millimeter-level filling thickness is controlled; meanwhile, whether the horizontal bubble is centered or not is observed after the superposed plate is fixed by bolts; and the uniform and continuous clay filling media with different thicknesses are pressed by using a compaction stick, and the manufactured filling media are kept horizontal through the horizontal bubbles again. The method is simple in structure, convenient to operate, wide in application range and capable of achieving millimeter-level thickness control.

Description

Technical Field

[0001] The present invention belongs to the field of indoor shear tests of rock structural planes, and relates to a device for preparing a series of sizes of clay filling media with millimeter-level thickness control. Background Art

[0002] Structural planes are the main factors causing the instability and failure of rock masses. Due to physical effects such as weathering and erosion and the shear displacement between rock walls, weak structural planes are formed, resulting in extremely complex shear mechanical behaviors. Most unstable rock masses often undergo shear failures along the weak structural planes, causing the instability of rock slopes and seriously threatening people's property and lives. Therefore, obtaining the mechanical properties of filled structural planes through indoor direct shear tests has important research significance for the stability analysis of actual rock slopes. At the same time, due to the significant differences in the mechanical properties of different types of filling media, the shear characteristics vary significantly. At present, many scholars have carried out a large number of experimental studies on structural planes with different filling media types. For example, Zhao et al. carried out direct shear tests on clay and sand filled structural planes with a size of 100mm×65mm×65mm based on the standard JRC profile; Xiao Weimin et al. systematically summarized the latest research results on the shear strength models of natural filled rock joints and found that most of them are based on the direct shear test results of clay-filled structural planes. Based on this, the direct shear test of clay-filled structural planes is the focus of current experimental research. It is crucial to accurately control the thickness of the clay filling medium. Moreover, the shear strength of rock structural planes has the characteristic of size effect, and the related research on the shear strength of filled structural planes is generally of small size and single. At the same time, the current filling structural plane production devices also have relatively single model sample sizes, limited applicability to structural plane morphologies, and uneven preparation of clay filling media due to mostly integrated devices. If a series of size viscous filling medium production device that can achieve millimeter-level thickness control and is applicable to various structural plane morphologies can be developed, it can provide an experimental basis for the research on the size effect of the shear strength of rock structural planes with weak interlayers. Summary of the Invention

[0003] In order to overcome the deficiencies of the existing research on clay-filled structural plane specimens, which are small and single in size, the present invention provides a device for preparing a series of sizes of clay filling media with simple principle, convenient operation, wide applicability, and capable of achieving millimeter-level thickness control.

[0004] The technical solution adopted by the present invention to solve its technical problems is as follows:

[0005] A preparation device for a series of sized clay filling media for achieving millimeter-level thickness control, comprising a base floor plate, a filling trough, filling superposition plates, a compaction rod, and a horizontal bubble. The base floor plate serves as the base of the test device. A layer of film is placed on the base, and then different types of superposition plates can be freely spliced according to the size of the structural plane to form the filling trough, thereby realizing the preparation of a continuous series of sized filling structural planes. The number of filling superposition plates is selected according to the filling thickness, and the thickness of the filling trough can be vertically stacked by superposition plates of different thicknesses to achieve the control of millimeter-level filling thickness. At the same time, after fixing the superposition plates with bolts, observe whether the horizontal bubble is centered. Use the compaction rod to press into a uniform and continuous clay filling medium of different thicknesses, and ensure again through the horizontal bubble that the prepared filling medium remains horizontal.

[0006] Furthermore, the water mass and dry soil mass required for the filling medium are weighed by the quality control method, and then the clay filling material obtained by fully mixing the two is filled into the filling trough.

[0007] Still further, the prepared clay filling medium is removed through the film on the base, closely attached to the lower plate structural plane and then aligned with the upper plate structural plane. Then, the excess filling material at the edge of the structural plane is scraped off, and the filling structural plane is fully compacted by a universal testing machine to reach the predetermined filling thickness. Moreover, the clay filling medium has ductility and plasticity, which can meet the preparation of clay filling structural planes with different topographies.

[0008] The beneficial effects of the present invention are mainly manifested in:

[0009] (1) It can be freely assembled according to the size of the structural plane, is applicable to the preparation of a series of sized clay filling media, has a wide size range, and the filling quality is uniform.

[0010] (2) It can achieve the free control of millimeter-level filling thickness with high precision.

[0011] (3) It can meet the filling preparation of natural topography structural planes with different undulation degrees. Description of the Drawings

[0012] Figure 1 It is a top view schematic diagram of the 200mm×400mm filling medium production device of this invention patent;

[0013] Figure 2 It is a front view schematic diagram of the 200mm×400mm filling medium production device of this invention patent;

[0014] Figure 3 It is a top view schematic diagram of the 200mm×200mm filling medium production device of this invention patent;

[0015] Figure 4 It is a front view schematic diagram of the 200mm×200mm filling medium production device of this invention patent;

[0016] Figure 5 It is a top view schematic diagram of the base plate of this invention patent;

[0017] Figure 6 It is a top view schematic diagram of the 200mm×400mm stacking plate of this invention patent;

[0018] Figure 7 It is a top view schematic diagram of the 200mm×200mm stacking plate of this invention patent;

[0019] Figure 8 It is a top view schematic diagram of the filling stacking plate ① of this invention patent;

[0020] Figure 9 It is a top view schematic diagram of the filling stacking plate ② of this invention patent;

[0021] Figure 10 It is a top view schematic diagram of the filling stacking plate ③ of this invention patent;

[0022] Figure 11 It is a front view schematic diagram of the filling structural plane with a low undulation morphology of 200mm×200mm;

[0023] Figure 12 It is a front view schematic diagram of the filling structural plane with a high undulation morphology of 200mm×200mm.

[0024] Among them, the reference numerals are as follows: 1. Compaction rod; 2. Filling groove; 3. Bolt hole; 4. Horizontal bubble; 5. Filling stacking plate; 6. Base plate; 7. Bolt; 8. 1mm filling stacking plate (8 pieces); 9. 3mm filling stacking plate (4 pieces); 10. 5mm filling stacking plate (4 pieces); 11. Upper plate structural plane; 12. Filling medium; 13. Lower plate structural plane. Detailed implementation manners

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] Refer to Figures 1 to 12 , a series of size clay filling medium preparation device for realizing millimeter-level thickness control, including a base plate 1, a filling groove, filling stacking plates ①-③, a compaction rod 2 and a horizontal bubble 3,

[0027] The base plate 1 is the base of the test device. A layer of film is placed on the base, and then different types of stacking plates ①-③ can be freely spliced to form a filling groove according to the size of the structural plane, so as to realize the preparation of a continuous series of size filling structural planes; and the number of filling stacking plates ①-③ can be selected according to the filling thickness. The thickness of the filling groove can be vertically stacked by 1mm, 3mm, and 5mm stacking plates to realize the control of millimeter-level filling thickness; at the same time, after fixing the filling stacking plate with bolts 3, observe whether the horizontal bubble 3 is centered;

[0028] Further, the water mass and dry soil mass required for the filling medium are weighed by the quality control method, and then the clay filling material obtained by fully mixing the two is filled into the filling tank. The compaction rod 2 is used to press it into a uniform and continuous clay filling medium with different thicknesses. Again, the horizontal bubble 3 is used to ensure that the produced filling medium remains horizontal.

[0029] Furthermore, the produced clay filling medium is removed through the film on the base, closely attached to the lower structural plane, and then the upper structural plane is aligned and placed. The excess filling material at the edge of the structural plane is scraped off, and then the filling structural plane is fully compacted by a universal testing machine to reach the predetermined filling thickness. And the clay filling medium has ductility and plasticity, which can meet the preparation of clay filling structural planes with different topographies.

[0030] In this example, for the production of clay filling medium specimens with different sizes and thicknesses, taking the production of clay filling media with a filling thickness of 40 mm and two sizes of 200 mm×400 mm and 200 mm×200 mm as examples. The differences in different sizes and thicknesses only exist when assembling the superimposed plates, and there are no obvious differences in the remaining operations. The process is as follows:

[0031] (1) Assemble the mold

[0032] Determine the size of the rock structure specimen, select the type of filling superimposed plate, and place a layer of film on the base plate. When the size of the structural plane is 200 mm×400 mm, select 1 superimposed plate ①, 3 superimposed plates ②, and 1 superimposed plate ③, and splice them into a filling tank with a size of 400 mm (see Figure 1 and Figure 2 ); when the filling size of the structural plane is 200 mm×200 mm, select 1 superimposed plate ①, 1 superimposed plate ②, and 1 superimposed plate ③, and splice them into a filling tank with a size of 200 mm; when the filling thickness is determined to be 40 mm, select 8 1-mm superimposed plates, 4 3-mm superimposed plates, and 4 5-mm superimposed plates for vertical alignment and superposition, and at the same time fix the filling superimposed plates with the same bolts (see Figure 3 and Figure 4 ) and then observe whether the horizontal bubble is centered.

[0033] (2) Prepare the filling interlayer

[0034] By the quality control method, the water mass and dry soil mass required for the filling media of 200 mm×200 mm×40 mm and 200 mm×400 mm×40 mm are weighed respectively, and then the clay filling material obtained by fully mixing the two is filled into the filling tank. The compaction rod is used to press it into a uniform and continuous clay filling medium with different thicknesses, and the horizontal bubble is used to ensure that the produced filling medium remains horizontal.

[0035] (3) Prepare the filling structural plane

[0036] Remove the prepared clay filling medium through the film on the base, closely attach it to the lower disc structural surfaces of 200mm×400mm and 200mm×200mm respectively, align and place the upper disc structural surface, then scrape off the excess filling material at the edge of the structural surface, and then fully compact the filling structural surface through a universal testing machine to make it reach the predetermined filling thickness of 40mm, as Figures 11 - 12 shown.

[0037] The content described in the embodiments of this specification is only a list of the implementation forms of the inventive concept and is only for illustrative purposes. The protection scope of the present invention should not be regarded as limited to the specific forms stated in this embodiment, and the protection scope of the present invention also extends to equivalent technical means that can be conceived by those of ordinary skill in the art based on the inventive concept of the present invention.

Claims

1. A series of size clay filling medium preparation device for realizing millimeter-level thickness control, characterized in that The device includes a base floor plate, a filling groove, filling stacking plates, a compaction rod and a horizontal bubble. The base floor plate is the base of the test device. A layer of film is placed on the base, and then different types of stacking plates can be freely spliced to form the filling groove according to the size of the structural plane, so as to realize the preparation of a continuous series of sizes of filled structural planes. The number of filling stacking plates is selected according to the filling thickness, and the thickness of the filling groove can be vertically stacked by stacking plates of different thicknesses to realize the control of the filling thickness at the millimeter level. At the same time, after fixing the stacking plates with bolts, observe whether the horizontal bubble is centered. Use the compaction rod to press into a uniform and continuous clay filling medium of different thicknesses, and ensure that the produced filling medium remains horizontal through the horizontal bubble again.

2. The series of size clay filling medium preparation device for realizing millimeter-level thickness control according to claim 1, characterized in that, Weigh the required water mass and dry soil mass of the filling medium by the quality control method, and then fill the clay filling material obtained by fully mixing the two into the filling groove.

3. The series of size clay filling medium preparation device for realizing millimeter-level thickness control as described in claim 1 or 2, characterized in that Remove the produced clay filling medium through the film on the base, closely attach it to the lower plate structural plane, align and place the upper plate structural plane, then scrape off the excess filling material at the edge of the structural plane, and then fully compact the filled structural plane through a universal testing machine to make it reach the predetermined filling thickness. Moreover, the clay filling medium has ductility and plasticity, which can meet the preparation of clay filled structural planes with different topographies.

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