A method of soil profile sampling

Abstract

The application belongs to the field of soil sampling methods, and particularly relates to a soil profile sampling method, which comprises the following steps: step one: digging a soil profile for sampling; step two: knocking a sampling frame into the soil profile until the sampling frame is filled; step three: digging away the soil to form operation grooves on both sides of the sampling frame, and the depth of the grooves is greater than that of the sampling frame; step four: gradually digging and breaking the soil adhered between the operation grooves on both sides, and wrapping the sampling frame with a wrapping belt while breaking, so that the soil sample is closed and compacted in the sampling frame by the wrapping belt; and after the adhered soil is cut off, the sampling is completed. The application adopts a mode of gradually binding and wrapping the wrapping belt while breaking, so that the sampled sample is tightly fixed in the sampling frame, the sample is guaranteed to be intact during the breaking and carrying process, sample collapse and damage are avoided, and the research value of the sample is guaranteed.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of soil sampling methods, and particularly relates to a soil profile sampling method. BACKGROUND

[0002] A soil profile sampling device is disclosed in Chinese Patent CN201720587852.4. When in use, the sampling frame is knocked by a hammer. The sampling frame is a metal frame with a bottom sealed with an acrylic plate. The metal frame is inserted into the soil profile, and the soil profile is cut by a separating shovel, so that the metal frame can carry the whole soil sample to the laboratory. However, in actual sampling, the soil layer is complex, especially the sandy soil layer or the gravel soil layer. Due to the loose structure and poor adhesion, the soil layer is damaged, collapsed and displaced during the cutting and transportation of the sample by the gravity and transportation vibration, which seriously affects the scientific research value of the sample. SUMMARY

[0003] The application provides a soil profile sampling method, which can protect the sample from being wrapped in the cutting process, and due to the binding effect of the wrapping belt, the sample is prevented from being loose during transportation, the real structure of the sample is protected, the scientific research value of the sample is protected, and the sampling success rate is improved.

[0004] The application adopts the specific technical scheme:

[0005] A soil profile sampling method comprises the following steps:

[0006] Step 1: excavate the soil profile for sampling;

[0007] Step 2: knock the sampling frame into the soil profile until the sampling frame is filled;

[0008] Step 3: excavate the soil to form operation grooves on both sides of the sampling frame, and the depth of the grooves is greater than that of the sampling frame;

[0009] Step 4: gradually excavate the soil adhered between the operation grooves, and wrap the sampling frame with the wrapping belt at the same time, so as to seal and compact the soil sample in the sampling frame by means of the wrapping belt. After the adhered soil is cut, the sampling is completed.

[0010] The soil adhered between the operation grooves is excavated from the loose soil end to the dense soil end.

[0011] The wrapping mode of the wrapping belt is spiral wrapping of the whole wrapping belt.

[0012] The bottom surface of the sampling frame is blocked by a transparent bottom plate, a through hole is arranged on the transparent bottom plate, an injection needle plate is additionally arranged, an array of injection tubes is arranged on the injection needle plate, the injection needle plate is attached to the transparent bottom plate, and the injection tubes are inserted into the sampling frame through the through hole on the transparent bottom plate.

[0013] In step two, the injection needle plate is attached to the transparent bottom plate of the sampling frame after the sampling frame is filled, and the sampling frame and the injection needle plate are fixed by winding the winding belt in step four.

[0014] The length of the injection tube is less than the depth of the sampling frame.

[0015] In step four, a horizontal through hole is dug close to one end of the sampling frame on the adhered soil, the winding belt is wound through the through hole, the horizontal through hole is enlarged towards the other end of the sampling frame, the cut soil in the enlarged part is located in the sampling frame, the winding belt is continuously wound, and the above process is repeated until the soil layer at the loose end is completely wound, and the soil layer at the dense end is directly cut off to complete sampling, or the soil layer at the dense end is continuously wound after being cut off to complete sampling.

[0016] In step four, the adhered soil is cut off by means of a cutting shovel, the cutting shovel comprises a shovel rod and a shovel blade and a winding groove arranged at both ends of the shovel rod respectively, the cross section of the shovel blade is triangular, the winding groove is groove-shaped and arranged along the shovel rod, and the cutting method in step four is that the cutting shovel is inserted into the soil, pressed from the loose end to the dense end, the soil is cut by the shovel blade, the winding belt is passed through the soil through the winding groove, and the sampling frame is wound.

[0017] The beneficial effects of the present application are:

[0018] The present application gradually binds and winds the winding belt with the cutting, so that the sampled sample is tightly fixed in the sampling frame, the sample is guaranteed to be intact during cutting and carrying, sample collapse and damage are avoided, and the research value of the sample is guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a schematic diagram of step 1 of the present application;

[0020] Figure 2 It is a schematic diagram of step 2 of the present application;

[0021] Figure 3 It is a schematic diagram of step 3 of the present application;

[0022] Figure 4 It is a schematic diagram of step 4 of the present application;

[0023] Figure 5 It is a structural schematic diagram of the injection needle plate;

[0024] Figure 6 Structure diagram of the digging shovel;

[0025] In the drawings, 1, sampling frame, 2, winding belt, 3, transparent bottom plate, 4, injection needle plate, 5, injection tube, 6, shovel rod, 7, shovel blade, 8, winding groove. DETAILED DESCRIPTION

[0026] The application will be further described below in conjunction with the drawings and specific embodiments:

[0027] Specific embodiments such as Figures 1 to 4 As shown, the application is a soil profile sampling method, comprising the following steps:

[0028] Step one: digging a soil profile for sampling;

[0029] Step two: knock the sampling frame 1 into the soil profile, observe from the transparent bottom plate 3, and fill the sampling frame 1 until it is full;

[0030] Step three: dig out the soil to form operation grooves on both sides of the sampling frame 1, and the groove depth is greater than the sampling frame 1 depth;

[0031] Step four: gradually dig the soil adhered between the operation grooves, and at the same time, wrap the sampling frame 1 with the winding belt 2, seal and compact the soil sample in the sampling frame 1 with the help of the winding belt 2, and complete the sampling after cutting off the adhered soil.

[0032] The soil sample is wrapped in the sampling frame 1 by the winding belt 2, avoiding the deformation of the soil sample during the sampling and transportation process, and ensuring a high sampling success rate.

[0033] Further, the soil adhered between the operation grooves is dug from the loose soil end to the dense soil end.

[0034] Further, the winding method of the winding belt 2 is spiral winding of the whole winding belt 2. The whole winding belt 2 is bound, which uniformly applies force on the whole sampling frame 1, avoiding excessive extrusion of part of the soil sample and ensuring the structural integrity of the soil sample.

[0035] Further, as shown, Figure 5 The bottom surface of the sampling frame 1 is blocked by a transparent bottom plate 3, the transparent bottom plate 3 is provided with through holes, an injection needle plate 4 is additionally provided, the injection needle plate 4 is provided with arrayed injection tubes 5, the injection needle plate 4 is attached to the transparent bottom plate 3, and the injection tubes 5 are inserted into the sampling frame 1 through the through holes in the transparent bottom plate 3;

[0036] The step two is to paste the injection needle plate 4 to the transparent bottom plate 3 of the sampling frame 1 after the sampling frame 1 is filled, and the sampling frame 1 and the injection needle plate 4 are fixed by the winding belt 2 in the step four. The length of the injection tube 5 is less than the depth of the sampling frame 1. The further fixation of the soil sample structure is realized by inserting the injection needle plate 4 into the soil sample in the sampling frame 1, and the injection tube 5 plays a further stabilizing role on the soil in the structure.

[0037] When the sample is treated in the laboratory, the sampling frame 1 is first placed horizontally, the winding belt 2 is unwound, and then the exposed surface of the soil sample is cleaned. After scraping off a layer, a recessed groove structure is formed on the side wall of the sampling frame 1, the groove bottom is the cleaned fresh sample surface, the sample cover is sealed by pouring resin, and after the resin is solidified, the sample is turned over. The back of the injection needle plate 4 is a groove structure, as shown in Figure 5 , the injection tube 5 is cleared by a thin stick, the resin is poured into the back of the injection needle plate 4, then the injection needle plate 4 is slowly lifted, the cavity where the injection tube 5 exits is filled with resin flowing out of the injection tube 5, and finally the resin is integrally bonded with the transparent bottom plate 3 after being poured flat, so that the sample has a stable needle structure formed by the resin in the deep layer, and the structure is stable when the sample is vertically placed for a long time, prolonging the storage stability.

[0038] Further, as shown in Figure 4 , the step four is to dig a transverse through hole close to one end of the sampling frame 1 in the adhered soil, pass the winding belt 2 through the through hole, enlarge the transverse through hole to the other end of the sampling frame 1, cut off the soil in the enlarged part, continue to wind by the winding belt 2, and repeat the above process until the soil layer at the loose end is completely wound, and the soil layer at the dense end is directly cut off to complete the sampling.

[0039] This winding method can be operated manually when the width of the sampling frame 1 is not large, which is convenient and fast.

[0040] The step four cuts the adhered soil by means of the cutting shovel, the cutting shovel includes a shovel rod 6 and a shovel blade 7 and a winding groove 8 arranged at both ends of the shovel rod 6, respectively. The cross section of the shovel blade 7 is triangular, and the winding groove 8 is groove-shaped along the shovel rod 6. The cutting method of the step four is to insert the cutting shovel into the soil, press from the loose end to the dense end, cut the soil by the shovel blade 7, and pass the winding belt 2 through the soil through the winding groove 8 to wind the sampling frame 1.

[0041] The method is close to the sampling frame for separation by using the excavating and breaking shovel, the section is flat, easy to handle in the later period, and the soil environment is adhered from the upper side and the sand is adhered from the lower side by starting to excavate and break from one side, the soil environment is adhered from the lower side and the sand is adhered from the upper side by starting to excavate and break from the other side, the sand is adhered from the upper side and the soil environment is adhered from the lower side by starting to excavate and break from the sand layer on the upper side, and the gravel is adhered from the lower side by starting to excavate and break from the gravel layer on the lower side.

Claims

1. A soil profile sampling method, characterized in that: The steps include: Step 1: Dig a soil profile for sampling; Step 2: Knock the sampling frame (1) into the soil profile until the sampling frame (1) is filled; Step 3: digging out the soil to form operating grooves on both sides of the sampling frame (1), the depth of the grooves being greater than the depth of the sampling frame (1); Step 4: gradually dig away the soil adhering to the operating grooves on both sides, and at the same time, wrap the sampling frame (1) with the wrapping tape (2), and seal and press the soil sample into the sampling frame (1) with the help of the wrapping tape (2). After the adhering soil is cut off, the sampling is completed; Operate the soil adhering between the grooves and dig from the loose soil end to the dense soil end; The bottom surface of the sampling frame (1) is blocked with a transparent bottom plate (3), a through hole is provided on the transparent bottom plate (3), and an injection needle plate (4) is additionally provided, and an array of injection tubes (5) are provided on the injection needle plate (4), the injection needle plate (4) is fitted with the transparent bottom plate (3), and the injection tubes (5) pass through the through hole on the transparent bottom plate (3) and are inserted into the sampling frame (1); In the second step, after the sampling frame (1) is filled, the injection needle plate (4) is attached to the transparent bottom plate (3) of the sampling frame (1), and in the fourth step, the sampling frame (1) and the injection needle plate (4) are wrapped and fixed by the wrapping tape (2); In step 4, the adhering soil is cut off by means of a digging shovel. The digging shovel comprises a shovel rod (6) and a shovel blade (7) and a winding groove (8) respectively arranged at both ends of the shovel rod (6). The cross section of the shovel blade (7) is a triangular structure, and the winding groove (8) is arranged in a groove shape along the shovel rod (6). The digging method in step 4 is to insert the digging shovel into the soil, press from the loose soil end to the dense soil end, cut the soil with the help of the shovel blade (7), and pass the winding belt (2) through the soil through the winding groove (8) to wind the sampling frame (1).

2. A soil profile sampling method according to claim 1, characterized in that: The winding method of the winding belt (2) is that the entire winding belt (2) is spirally wound.

3. A soil profile sampling method according to claim 1, characterized in that: The length of the injection tube (5) is less than the depth of the sampling frame (1).

4. A soil profile sampling method according to claim 2, characterized in that: The digging method of step 4 is to dig a transverse through hole on the adhered soil close to one end of the sampling frame (1), pass the winding belt (2) through the through hole and wrap it, then expand the transverse through hole toward the other end of the sampling frame (1), and the soil cut off at the expanded part is located in the sampling frame (1). The winding belt (2) is used to continue winding, and the above process is repeated until the soil layer at the loose soil end is completely wound, and the soil layer at the dense soil end is directly cut off to complete the sampling, or after cutting, the winding is continued until the sampling frame (1) is completely wrapped to complete the sampling.

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