Soil sampler for collecting undisturbed soil in micropores and use method of soil sampler

Abstract

The invention relates to a soil sampler for collecting undisturbed soil in micropores and a use method of the soil sampler. The soil sampler comprises a cylindrical shell, a lifting handle, a control handle, an upper guide hole, a lower guide ring, a transmission rod, a connecting rod, a cutter clamping device, a micro cutting ring, a clamping screw, a tooth-shaped guide sleeve, a sampling hole, a wrench via hole, a stand column and a cover plate. According to the invention, the miniature ring is designed, so that undisturbed soil with a certain depth can be collected from the side wall of the exploration hole, and the detection of an undisturbed soil sample is met. The sampling device is convenient to disassemble, adopts a combined design with the transmission device, and is simple and convenient to operate and low in cost; meanwhile, the miniature ring is directly replaced for re-operation, the original sampling state is kept, and the sampling quality can be improved. The device is simple and compact in structure, free of an additional power device, flexible and convenient to use, convenient to carry and rapid and efficient in sampling.

Description

Technical Field

[0001] The technical solution of the present invention relates to the technical field of soil sampling for collecting original soil, and specifically to a soil sampler for collecting original soil in micropores and a use method thereof. Background Art

[0002] Original soil, also commonly called original soil sample or undisturbed soil sample, is a soil sample that maintains natural water content and natural structure. It is used to determine soil bulk density, natural porosity, compression coefficient, shear strength and other indicators. The natural structure of the sample should be maintained during the sampling process. If the natural structure of the sample is destroyed, it is called a "disturbed sample". However, the existing soil sampler cannot quickly sample the soil layer at different depths after excavation, resulting in large deviations in subsequent soil analysis, affecting the accuracy of understanding the soil properties. Summary of the invention

[0003] The technical problem to be solved by the present invention is to provide a soil sampler for collecting original soil in micropores and a use method thereof, which can collect original soil at a certain depth to meet the requirements of detecting original soil samples.

[0004] The technical scheme adopted by the present invention includes a soil sampler for collecting original soil in a micropore, including a cylindrical shell, a carrying handle, an operating handle, an upper guide hole, a lower guide ring, a transmission rod, a connecting rod, a knife clamp, a micro-ring knife, a clamping screw, a toothed guide sleeve, a sampling hole, a wrench through hole, a column, and a cover plate, wherein the cylindrical shell is designed vertically, and two columns are provided. The carrying handle, two columns, and the cover plate are connected to the cylindrical shell from top to bottom by welding, and the cover plate has an upper guide hole. The operating handle is connected to the upper end of the transmission rod by welding, and the transmission rod passes through the upper guide hole and the lower guide ring in turn and is connected to the upper end of the connecting rod by a pin, and the lower end of the connecting rod is connected to the left side of the knife clamp by a pin, and the knife clamp clamps the micro-ring knife by the clamping claws at the upper and lower ends, and the lower end of the knife clamp is connected to the clamping screw by a bolt, and the clamping screw tightens the micro-ring knife, and a bottom plate is provided at the bottom of the cylindrical shell and a wrench through hole is provided on the bottom plate; Furthermore, a horizontal sampling hole is left at the lower end of the cylindrical shell; Furthermore, a lower guide ring is provided inside the cylindrical shell, and the position of the lower guide ring is higher than the sampling hole; Furthermore, a horizontal toothed guide sleeve is welded on the inner side of the sampling hole, and the upper and lower ends of the right side of the knife clamp are designed as arc-shaped inner walls, and the diameter of the arc is equal to the outer diameter of the toothed guide sleeve; Furthermore, the toothed guide sleeve is designed as a cylindrical toothed sleeve, and the inner diameter of the toothed guide sleeve is equal to the outer diameter of the micro-ring cutter; Furthermore, the outer side of the cylindrical shell is engraved with distance scales from bottom to top, and the zero line of the scales is flush with the axis of the micro-ring knife.

[0005] In the soil sampler for collecting undisturbed soil in micro-holes, a rubber pad is arranged on the side of the upper right end of the knife clamp that contacts the micro-ring knife.

[0006] In the soil sampler for collecting undisturbed soil in the micropores, the diameter of the annular knife is 10 mm.

[0007] The diameter of the cylindrical shell of the soil sampler for collecting undisturbed soil in micropores is 20 mm.

[0008] The present invention solves the above technical problem and also includes a method for using a soil sampler for collecting undisturbed soil in micropores, which is characterized by comprising the following steps: The first step is to complete the drilling: drilling is done on the surface where sampling is required. The depth of the drilling is determined according to the measurement requirements, and the diameter of the drilling hole is the same as the outer diameter of the cylindrical shell; The second step is to install the micro-ring knife: lift the operating handle to align the knife clamp with the sampling hole, insert the micro-ring knife into the sampling hole and put it into the opening at the right end of the knife clamp, and tighten the clamping screw with a wrench through the wrench hole at the bottom of the tubular shell until the clamping screw locks the micro-ring knife, and the installation is completed; Step 3: Sampling: S1: Place the device into the drilled soil hole, and keep the scale on the outside of the cylindrical shell corresponding to the ground plane the same as the preset depth, then press the operating handle, and press the micro-ring knife into the original soil through the transmission rod, connecting rod, and knife clamp to take samples; S2: Keep the height of the cylindrical shell unchanged, slowly lift the operating handle, collect the original soil sample into the inner cavity of the cylindrical shell through the micro-ring knife, and then lift the soil sampler containing the original soil sample through the lifting handle; S3: Press the operating handle, the micro-ring cutter extends out of the cylindrical shell, and the clamping screw is loosened by a wrench through the wrench hole at the bottom of the cylindrical shell, and then the micro-ring cutter with the original soil sample is removed to complete the sampling; Step 4: Replace the new micro-ring knife and repeat the second and third steps to take samples according to the new sampling depth until all sampling operations are completed; Step 5: Backfill the surface borehole.

[0009] Compared with the prior art, the soil sampler for collecting undisturbed soil in micropores and the use method thereof of the present invention have the following beneficial effects: (1) The present invention is designed with a micro-annular device that can collect undisturbed soil of a certain depth from the side wall of the exploration hole to meet the requirements of the detection of undisturbed soil samples.

[0010] (2) The sampling device of the present invention is easy to disassemble and adopts a combined design with the transmission device, which is easy to operate and low in cost. At the same time, the present invention directly replaces the micro-ring for re-operation, maintaining the original state of the sampling and improving the sampling quality.

[0011] (3) The structure of the present invention is simple and compact, does not require the aid of an additional power device, is flexible and convenient to use, is easy to carry, and allows for quick and efficient sampling. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0013] Figure 1 This is a schematic diagram of the back side of a soil sampler for collecting undisturbed soil in micropores according to the present invention.

[0014] Figure 2 The present invention is a front view schematic diagram of a soil sampler for collecting undisturbed soil in micropores.

[0015] Figure 3 The diagram is an enlarged schematic diagram of the upper part of a soil sampler for collecting undisturbed soil in a micropore according to the present invention.

[0016] Figure 4 The invention discloses an enlarged schematic diagram of a soil sampler for collecting undisturbed soil in micropores with the operating handle and the transmission rod removed from the upper part.

[0017] Figure 5 The present invention is a schematic cross-sectional view of the lower portion of a soil sampler for collecting undisturbed soil in micropores in a soil sampling state.

[0018] Figure 6 The present invention is a cross-sectional schematic diagram showing the lower portion of a soil sampler for collecting undisturbed soil in a micropore in a storage state.

[0019] Figure 7 The present invention is a schematic diagram of a connecting rod structure of a soil sampler for collecting undisturbed soil in a micropore.

[0020] Figure 8 The present invention is a schematic diagram of the micro-ring structure of a soil sampler for collecting undisturbed soil in a micro-hole.

[0021] Fig. 9 The present invention is a schematic front view of a knife clamp structure of a soil sampler for collecting undisturbed soil in a micropore.

[0022] Fig.10 The present invention is a schematic diagram of the back side of the knife clamp structure of a soil sampler for collecting undisturbed soil in a micro-hole.

[0023] Fig.11 The present invention is a bottom view schematic diagram of a knife clamp structure of a soil sampler for collecting undisturbed soil in a micropore.

[0024] Fig.12 The present invention is a schematic diagram of a cutaway lower portion of a soil sampler shell for collecting undisturbed soil in micropores.

[0025] Fig.13 The present invention is a flow chart of a method for using a soil sampler for collecting undisturbed soil in a micropore.

[0026] In the figure: 1. cylindrical shell, 2. carrying handle, 3. operating handle, 4. upper guide hole, 5. lower guide ring, 6. transmission rod, 7. connecting rod, 8. knife clamp, 9. micro ring knife, 10. clamping screw, 11. toothed guide sleeve, 12. sampling hole, 13. spanner hole, 14. column, 15. cover plate. DETAILED DESCRIPTION

[0027] Figures 1 to 4 The illustrated embodiment shows that the technical solution adopted by the present invention includes a soil sampler for collecting undisturbed soil in a micropore, including a cylindrical shell 1, a handle 2, a control handle 3, an upper guide hole 4, a lower guide ring 5, a transmission rod 6, a connecting rod 7, a knife clamp 8, a micro-ring knife 9, a clamping screw 10, a toothed guide sleeve 11, a sampling hole 12, a wrench through hole 13, a column 14, and a cover plate 15, wherein the cylindrical shell 1 is vertically designed, the column 14 is provided with two, the handle 2, the two columns 14 are provided with two, and the upper and lower guide holes 4 are provided with two. 4. The cover plate 15 is connected to the cylindrical shell 1 by welding from top to bottom. The cover plate 15 has an upper guide hole 4. The operating handle 3 is connected to the upper end of the transmission rod 6 by welding. A horizontal sampling hole 12 is left at the lower end of the cylindrical shell 1. When collecting the original soil, the micro-ring knife 9 extends from the sampling hole 12 for sampling. A bottom plate is provided at the bottom of the cylindrical shell 1 and a wrench through hole 13 is provided on the bottom plate, so that the operator can use the wrench through the wrench through hole 13 to pre-tighten or loosen the clamping screw 10; Figures 5 to 11 The illustrated embodiment shows that a lower guide ring 5 is provided inside the cylindrical shell 1, and the position of the lower guide ring 5 is higher than the sampling hole 12. The transmission rod 6 passes through the upper guide hole 4 and the lower guide ring 5 in sequence, and is connected to the upper end of the connecting rod 7 by a pin, so that the transmission rod 6 and the connecting rod 7 can rotate relative to each other. Similarly, the lower end of the connecting rod 7 is connected to the left side of the knife clamp 8 by a pin, so that the connecting rod 7 and the knife clamp 8 can rotate relative to each other, that is, the vertical movement of the transmission rod 6 is converted into the horizontal movement of the micro-ring knife 9 by the connecting rod 7, and the knife clamp 8 clamps the micro-ring knife 9 by the clamping claws at the upper and lower ends. The lower end of the knife clamp 8 is connected to the clamping screw 10 by a bolt, and the clamping screw 10 presses the micro-ring knife 9. As the clamping force of the clamping screw 10 gradually increases, the knife clamp 8 gradually clamps the micro-ring knife 9. Fig.12The illustrated embodiment shows that a horizontal toothed guide sleeve 11 is welded on the inner side of the sampling hole 12 to guide the micro-ring knife 9 to move horizontally in and out of the sampling hole 12. The upper and lower ends of the right side of the knife clamp 8 are designed as arc-shaped inner walls, and the diameter of the arc is equal to the outer diameter of the toothed guide sleeve 11. The toothed guide sleeve 11 is designed as a cylindrical tooth shape, and the inner diameter of the toothed guide sleeve 11 is equal to the outer diameter of the micro-ring knife 9 to prevent the knife clamp 8 from interfering with the toothed guide sleeve 11. The outer side of the cylindrical shell 1 is engraved with distance scales from bottom to top, and the zero line of the scale is flush with the axis of the micro-ring knife 9 to ensure that when collecting the original soil sample, the scale on the outside of the cylindrical shell 1 corresponding to the ground plane is kept the same as the preset depth.

[0028] Fig.13 Shown is a flow chart of a method for using a soil sampler for collecting undisturbed soil in a micropore according to the present invention. Example

[0029] According to the above Figures 1 to 12 As shown, a soil sampler for collecting original soil in micropores is prepared, wherein a rubber pad is provided on the side of the upper right end of the knife clamp 8 that contacts the micro-annular knife 9 to increase the friction between the knife clamp 8 and the micro-annular knife 9; the diameter of the annular knife is 10 mm; the diameter of the cylindrical shell 1 is 20 mm.

Claims

1. A method for using a soil sampler for collecting undisturbed soil in a micropore, characterized in that The steps include: The first step is to complete the drilling: drilling is done on the surface where sampling is required. The depth of the drilling is determined according to the measurement requirements, and the diameter of the drilling hole is the same as the outer diameter of the cylindrical shell; The second step is to install the micro-ring knife: lift the operating handle to align the knife clamp with the sampling hole, insert the micro-ring knife into the sampling hole and put it into the opening at the right end of the knife clamp, and tighten the clamping screw with a wrench through the wrench hole at the bottom of the tubular shell until the clamping screw locks the micro-ring knife, and the installation is completed; Step 3: Sampling: S1: Place the device into the drilled soil hole, and keep the scale on the outside of the cylindrical shell corresponding to the ground plane the same as the preset depth, then press the operating handle, and press the micro-ring knife into the original soil through the transmission rod, connecting rod, and knife clamp to take samples; S2: Keep the height of the cylindrical shell unchanged, slowly lift the operating handle, collect the original soil sample into the inner cavity of the cylindrical shell through the micro-ring knife, and then lift the soil sampler containing the original soil sample through the lifting handle; S3: Press the operating handle, the micro-ring cutter extends out of the cylindrical shell, and the clamping screw is loosened by a wrench through the wrench hole at the bottom of the cylindrical shell, and then the micro-ring cutter with the original soil sample is removed to complete the sampling; Step 4: Replace the new micro-ring knife and repeat the second and third steps to take samples according to the new sampling depth until all sampling operations are completed; Step 5: Backfill the surface borehole.

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