CN106248424B - Large buried depth soil sampling device - Google Patents
Large buried depth soil sampling device Download PDFInfo
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- CN106248424B CN106248424B CN201610916517.4A CN201610916517A CN106248424B CN 106248424 B CN106248424 B CN 106248424B CN 201610916517 A CN201610916517 A CN 201610916517A CN 106248424 B CN106248424 B CN 106248424B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
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Abstract
The invention provides a large burial depth soil sampling device, which comprises: the handle is of a hollow structure, and winches are arranged above the handle and in the hollow structure; the drill bit comprises an inner wall, the inner wall comprises an upper layer groove and a lower layer groove, the upper layer groove and the upper section of the drill bit form a first space at intervals, and the lower layer groove and the lower section of the drill bit form a second space at intervals; the inner wall is provided with a cutting ring which is clamped between the upper layer groove and the lower layer groove and used for taking soil; the connecting rod is internally provided with two L-shaped steel wires; the horizontal parts of the two L-shaped steel wires are respectively arranged in the first space and the second space and are used for cutting soil on the upper surface and the lower surface of the cutting ring under the driving of the rotating winch. After the device disclosed by the invention is buried, the cutting of the soil body can be completed under the condition of keeping the soil pressure of the large buried depth soil. Therefore, deformation of soil in the cutting ring caused by soil pressure release can be effectively avoided, so that the obtained soil sample is accurate in relevant characteristic parameters, and further the relevant characteristic parameters of deep soil are accurately measured.
Description
Technical Field
The invention relates to the field of experimental research equipment for soil science, in particular to a large buried depth soil sampling device.
Background
The physical parameters of the soil and the hydrodynamic characteristic parameters thereof are important basis for researching the soil hydrological process. In order to obtain physical parameters and hydrodynamic characteristic parameters of soil, original soil sampling is generally adopted. At present, with the large-scale exploitation of underground water, the buried depth of the underground water level in North China plain is reduced from 2-15 m in 70 s of 20 th century to 8-30 m at present, and the buried depth of a local area even reaches 56m. Then, the reduction of the groundwater level expands the research depth of the soil hydrological process from the original few meters to a range of twenty meters or more.
And as the research depth increases, the soil pressure to which the soil is subjected also increases. The increase in soil pressure restricts structural adjustment during soil moisture transport, which adversely affects soil moisture characteristics such as moisture transmission of the soil.
For soil sampling in a deep buried environment, the conventional undisturbed soil sampling device is generally a cutting ring accommodated in the inner wall of the drill bit, wherein the upper and lower interfaces of the cutting ring are completely attached to the inner wall without gaps. By adopting the cutting ring sampling structure, when soil is taken out to the ground from a deeper environment, the cutting ring is of a hollow structure without a bottom at the upper part and the lower part, and the two ends of the cutting ring can not pressurize the soil body. Therefore, once soil sampling is completed, the pressure on the sampled soil body under the soil originally can be suddenly lost. Therefore, the deep soil sampled to the ground is deformed such as expanded, and further parameters such as measured soil physical parameters and soil hydrodynamic parameters are distorted, so that the soil analysis is not facilitated.
Therefore, when the soil sampling device in the prior art is directly applied to the environment with large burial depth, the problems of expansion of sampled soil and distortion of soil parameters and unfavorable soil analysis generally exist.
Disclosure of Invention
The technical problem to be solved by the embodiment of the invention is to provide a soil sampling device with large burial depth to solve the problems that when the soil sampling device in the prior art is directly applied to the environment with large burial depth, the sampled soil is expanded, soil parameters are distorted, and soil analysis is not facilitated.
In order to solve the above problems, according to one aspect of the present invention, there is disclosed a large buried depth soil sampling device comprising:
the handle is of a hollow structure, and winches 4 are arranged above the handle and in the hollow structure;
the drill bit comprises an inner wall and an outer wall, wherein the inner wall comprises an upper layer groove and a lower layer groove, the upper layer groove and the upper section of the drill bit form a first space at intervals, and the lower layer groove and the lower section of the drill bit form a second space at intervals; the cutting ring is a hollow circular cylindrical structure with openings in the upper and lower sections, is clamped between the upper-layer groove and the lower-layer groove, is attached to the inner wall and is used for taking soil;
the connecting rod is of a hollow structure connected between the handle and the drill bit, and two L-shaped steel wires are arranged in the connecting rod; the vertical parts of the two L-shaped steel wires are all arranged in the connecting rod in a penetrating mode, the upper cross sections of the vertical parts are arranged in the hollow structure of the handle in a penetrating mode, the upper cross sections are connected with the winch 4, and the horizontal parts of the two L-shaped steel wires are arranged in the first space and the second space respectively and used for cutting soil on the upper surface and the lower surface of the cutting ring under the driving of the winch 4 in a rotating mode.
Compared with the prior art, the embodiment of the invention has the following advantages:
by means of the technical scheme of the embodiment of the invention, after soil sampling is completed, soil in the cutting ring can be pressurized by soil on the upper and lower sections of the cutting ring in the first space and the second space, namely, after the soil sampling device for the large buried depth soil is adopted for soil entering, the soil body can be cut under the condition of basically keeping the soil pressure of the large buried depth soil. Therefore, the problem that the soil parameters are distorted due to the fact that the soil taken from a large and deep buried environment expands without external pressure when reaching the ground is solved; meanwhile, the horizontal parts of the L-shaped steel wires are arranged in the first space and the second space, so that the soil which is required to be kept with original pressure in the cutting ring can be obtained before soil analysis is needed, and the accuracy of soil parameter analysis can be guaranteed. Can avoid the easy damaged of cutting ring both sides soil body in the cutting ring soil taking process of traditional technique like this, utilize the problem that needs the repair before the cutting ring test, simultaneously, can avoid the deformation that soil pressure release caused to the soil in the cutting ring again. Therefore, the obtained soil sample has accurate relevant characteristic parameters, and the relevant characteristic parameters of the deep soil are accurately measured.
Drawings
FIG. 1 is a schematic view of a large buried depth soil sampling device according to an embodiment of the present invention;
FIG. 2 is an enlarged schematic view of a handle and winch according to an embodiment of the present invention;
FIG. 3 is an enlarged schematic view of a drill bit of an embodiment of the present invention;
fig. 4 is an enlarged schematic view of a connecting rod according to an embodiment of the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description thereof.
Referring to fig. 1, a schematic diagram of an embodiment of a large buried depth soil sampling device according to the present invention is shown, and the large buried depth soil sampling device according to the embodiment of the present invention specifically includes:
a handle 1 having a hollow structure, fig. 2 is an enlarged schematic view of the handle 1 and a winch 4 in fig. 1, and referring to fig. 1 and 2, the winch 4 is disposed above the handle 1 and in the hollow structure; also, both the handle 1 and the winch 4 can be rotated.
A drill bit, fig. 3 is an enlarged schematic view of the drill bit in fig. 1, and referring to fig. 1 and fig. 3, the drill bit includes an inner wall 6 and an outer wall 5, and a solid structure or a hollow structure may be provided between the inner wall 6 and the outer wall 5, which may be flexibly arranged according to actual needs in different embodiments;
wherein the inner wall 6 comprises an upper groove (not shown) and a lower groove (not shown), wherein the upper groove and the upper section of the drill bit are spaced to form a first space, and the lower groove and the lower section of the drill bit are spaced to form a second space;
the inner wall 6 is also provided with a cutting ring 7, the cutting ring 7 is a hollow circular cylindrical structure with an opening at the upper and lower sections, is clamped between the upper layer groove and the lower layer groove and is attached to the inner wall 6 for soil sampling;
in this embodiment, the upper and lower grooves are used for clamping the cutting ring 7 in the inner wall 6 of the drill, and therefore, the upper and lower grooves may have the same or different shapes, and may be circular or sawtooth grooves, as long as they can clamp the cutting ring 7 on the inner wall 6. Therefore, the shape and structure of the upper and lower grooves are not particularly limited in the present invention.
A connecting rod 2, fig. 4 is an enlarged schematic view of the connecting rod in fig. 1, and referring to fig. 1 and fig. 4, the connecting rod is a hollow structure connected between the handle 1 and the drill bit, and two L-shaped steel wires are arranged in the connecting rod (fig. 1 only shows one L-shaped steel wire 8); the vertical portions 8a of the two L-shaped steel wires are all inserted into the connecting rod, the upper cross sections of the vertical portions are inserted into the hollow structure of the handle 1, the upper cross sections are connected with the winch 4, the horizontal portions of the two L-shaped steel wires are respectively arranged in the first space and the second space (here, one steel wire located in the first space a is shown), and the two L-shaped steel wires are used for cutting soil on the upper surface and the lower surface of the cutting ring 7 (namely, soil located in the first space and the second space and exceeding the upper cross section and the lower cross section of the cutting ring 7) under the driving of the winch 4 when the winch 4 rotates.
When the large buried depth soil sampling device is used for carrying out concrete soil sampling operation, the drill bit can be drilled into the large buried depth soil by rotating the handle 1, so that the cutting ring 7 in the drill bit can sample the soil; since there is a space between the upper and lower sections of the cutting ring 7 and the upper and lower sections of the drill, when the drill is taken out of the soil with large depth, the soil covered on the upper and lower sections of the cutting ring 7 will keep the pressure of the soil in the cutting ring 7. After the completion of boring soil, bury soil sampling device greatly deeply and arrive subaerially, because the soil in first space and second space will play the effect of keeping pressure to the soil in the cutting ring 7, thereby can make the soil in the cutting ring 7 still be in the soil pressure under the big environment of burying deeply that locates when boring soil, soil in the cutting ring 7 can be pressurized by the unnecessary soil of upper and lower cross-section promptly, this pressure value is the same with the original pressure under the big environment of burying deeply, just so can avoid the soil of sampling to arrive and expand because lose pressure after ground, cause the soil parameter distortion, be unfavorable for soil analysis's problem.
Then, under the condition that the soil in the cutting ring 7 basically keeps the soil pressure of the soil with large buried depth, the soil on the upper and lower sections of the cutting ring 7 is cut by means of the two L-shaped steel wires, so that the problems that soil bodies on two sides of the cutting ring are easy to damage in the soil taking process of the cutting ring in the traditional technology and need to be repaired before the cutting ring is used for testing can be avoided, and meanwhile, the deformation of the soil in the cutting ring 7 caused by the release of the soil pressure can be avoided. Therefore, the obtained soil sample has accurate relevant characteristic parameters, and the relevant characteristic parameters of the deep soil are accurately measured.
In addition, since the soil to be analyzed is the soil located inside the cutting ring 7, it is necessary to remove the excess soil located on the upper and lower cross sections of the cutting ring 7 before the soil analysis, and at this time, the wire 8 can be tightened by rotating the winch 4, and since the wire located in the first and second spaces is the L-shaped horizontal portion, the excess soil can be cut off, thereby obtaining the soil inside the cutting ring 7 for the soil analysis.
By means of the technical scheme of the embodiment of the invention, after soil taking is completed, soil in the cutting ring is pressurized by soil on the upper and lower sections of the cutting ring in the first space and the second space, so that the problem of soil parameter distortion caused by expansion of the soil taken from a deep-buried environment due to no external pressure when the soil reaches the ground is avoided; meanwhile, the horizontal parts of the L-shaped steel wires are arranged in the first space and the second space, so that the soil which is required to be kept with original pressure in the cutting ring can be obtained before soil analysis is needed, and the accuracy of soil parameter analysis can be guaranteed.
With continued reference to fig. 1-4, based on the above-described embodiments, the large buried depth soil sampling device of embodiments of the present invention will be further discussed below.
Alternatively, in one embodiment, the horizontal portions of the two L-shaped wires for cutting the soil on the upper and lower surfaces of the cutting ring may be respectively caught in the upper and lower grooves before cutting the soil.
Accordingly, in the present embodiment, the wire 8 is used to tighten up the excess soil covered on the upper surface of the cutting ring 7 when the winch 4 is rotated, and the horizontal portion 8b of the wire 8 is caught in the upper groove of the first space a before cutting the soil; the horizontal part of the other not shown wire 8, which is used to tighten the excess soil covered by the lower surface of the cutting ring 7 when the winch 4 is turned, is caught in the lower groove of the second space B.
Like this, when steel wire 8 is not used, can make steel wire 8 have the position that can block in the drill bit, avoid when big buried depth soil sampling device removes, this steel wire takes place to rock in the drill bit inside and damages each part that can collide.
In the embodiment, the existing upper and lower layer grooves for clamping the cutting ring 7 are adopted for the placing position of the steel wire 8 when not used, so that the manufacturing cost of the large buried depth soil sampling device can be saved on one hand, and more notches can be avoided being arranged in a drill bit with smaller volume on the other hand; of course, in different embodiments, a person skilled in the art may also set other components capable of clamping the steel wire 8 when the steel wire 8 is not used, as long as the steel wire 8 can be kept from shaking, according to actual needs, and the invention is not limited in this respect.
Optionally, in another embodiment, after the rotating winch tightens the wire to cut the soil on the upper and lower sections of the cutting ring, and also to avoid the wire from shaking in the first or second space, the inner wall of the drill bit according to the embodiment of the present invention further comprises: a first inner groove and a second inner groove, wherein the first inner groove is located between the upper groove and the upper section of the drill bit, and the second inner groove is located between the lower groove and the lower section of the drill bit; and the horizontal parts of the two L-shaped steel wires for cutting the soil on the upper surface and the lower surface of the cutting ring are respectively clamped in the first inner groove and the second inner groove after cutting the soil.
Accordingly, in this embodiment, referring to fig. 1 and 3, there are shown a first inner groove 9a between the upper groove and the upper cross-section of the drill and a second inner groove 9b between the lower groove and the lower cross-section of the drill, so that the steel wire 8 can be automatically inserted into the corresponding inner groove after cutting the excess soil.
Alternatively, in another embodiment, the L-corner portions of the two L-shaped steel wires are arc-shaped, and the L-corner portions have smooth surfaces, so that when the horizontal portions of the steel wires are cutting soil, since the horizontal portions are in direct contact with the soil of the upper and lower sections of the ring cutter, if the L-corner portions are right-angled, the right angle is easily worn to cause the steel wires to break. Therefore, in the present embodiment, the L-corner portion is formed in a circular arc shape, so that the corner is prevented from being in direct contact with the soil to be cut or other portions, thereby prolonging the service life of the steel wire.
Accordingly, referring to the embodiment shown in fig. 1 and 3, the L-shaped corner portion 8b of the L-shaped steel wire 8 is formed in a circular arc shape, so that the service life of the steel wire 8 can be extended.
Of course, although only the L-corner portion is limited to be circular arc-shaped and have a smooth surface in the present embodiment, in different embodiments, each portion of the steel wire 8 that is likely to contact other members or soil during rotation may be circular arc-shaped and have a smooth surface according to actual needs, thereby further improving the service life of the steel wire 8.
In addition, in one embodiment, the cutting ring may be directly integrated with the drill bit, that is, the cutting ring may be clamped in the drill bit by providing two layers of grooves as described in the above embodiments.
Of course, in another embodiment, in order to replace the cutting ring at any time, the cutting ring and the drill bit may be disposed in a non-integrated manner, specifically, an opening and a cover plate matched with the opening may be disposed on the same side of the inner wall and the outer wall, respectively, and the size of the opening is larger than that of the cutting ring. The opening is used for installing the cutting ring on the inner wall and taking the cutting ring out of the inner wall 6; the cover plate is used for fixing the cutting ring on the inner wall.
Specifically, by providing the opening, when soil needs to be taken out from the ground, the cutting ring is inserted into the inner wall of the drill bit; in order to keep the cutting ring immovable in the drill bit during the underground soil borrowing process, a cover plate matched with the opening in size needs to be arranged, the cutting ring can be kept immovable in the drill bit by covering the cover plate, and the soil borrowing efficiency is improved; meanwhile, a further guarantee is provided for the effect that the cutting ring is fixed in the drill bit.
In addition, in the present embodiment, referring to fig. 1 and 3, the drill bit according to the embodiment of the present invention has a hollow, circular cylindrical structure, and the lower section of the drill bit has an open structure, so that soil can enter the cutting ring 7 through the lower section of the drill bit when the drill bit is drilled into the ground by rotating the handle 1.
Optionally, the cutting ring 7 is also of a circular cylindrical structure, so that the cutting ring 7 can be more easily attached to the inner wall 6 of the drill bit; in addition, the shape of the cylindrical structure of the drill and the cutting ring 7 is not particularly limited in the embodiment of the present invention, and they may be circular, polygonal, or other shapes as long as they are hollow structures with an open lower cross section.
Alternatively, in this embodiment, referring to fig. 1 and 4, the connecting rod 2 according to an embodiment of the present invention may include a plurality of sub-connecting rods 2a, 2b, 2c that are threadedly connected. Wherein, to arbitrary sub-connecting rod, the junction of its one end has the surface screw thread, and the junction of the other end has the internal surface screw thread, can guarantee arbitrary two sub-connecting rods and connect in a supporting way like this.
In the actual soil borrowing process, different numbers of sub-connecting rods can be connected to form connecting rods with different lengths along with different depths of deep drilled soil; at the in-process of borrowing, if the length of discovery current connecting rod is not enough, can directly increase the length that the sub-connecting rod extends the connecting rod in the sub-connecting rod department of upper end to continue to bore soil, and need not to take out the drill bit from soil, improved the convenience of borrowing.
In addition, when the large buried depth soil sampling device shown in fig. 1 is used for completing soil sampling from a large buried depth environment and simultaneously completing soil cutting of the upper and lower sections of the cutting ring 7 through the steel wire 8, the upper and lower sections of the cutting ring 7 are clamped with the permeable stones immediately after soil cutting is completed, the cutting ring 7 clamped with the permeable stones is placed in a storage box, the box is a closed box, and the height in the box is the sum of the thicknesses of the two permeable stones and the thickness of the cutting ring 7, so that the pressure of the soil in the cutting ring 7 is ensured to be the same as the pressure when the cutting ring 7 is taken out of the drill bit; in addition, a pressure sensor connected with the permeable stone is arranged outside the box body, and once the pressure of the permeable stone is detected to be smaller than the pressure of soil when taking out the soil in a deep burying environment, the permeable stone is pressurized.
It should be noted that fig. 2, fig. 3 and fig. 4 are enlarged schematic views of different parts in fig. 1, and therefore, the same reference numerals in fig. 2 to fig. 4 as those in fig. 1 indicate the same meanings, and reference to each other may be sufficient if the reference numerals in each of the drawings are not described in detail herein.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
While preferred embodiments of the present invention have been described, additional variations and modifications of these embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the embodiments of the invention.
Finally, it should also be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "include", "including" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or terminal device including a series of elements includes not only those elements but also other elements not explicitly listed or inherent to such process, method, article, or terminal device. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or terminal apparatus that comprises the element.
The above detailed description is made on the large buried depth soil sampling device provided by the present invention, and the principle and the implementation mode of the present invention are explained by applying a specific example, and the description of the above example is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (10)
1. The utility model provides a big buried depth soil sampling device which characterized in that includes:
the handle is of a hollow structure, and winches are arranged above the handle and in the hollow structure;
the drill bit comprises an inner wall and an outer wall, wherein the inner wall comprises an upper layer groove and a lower layer groove, the upper layer groove and the upper section of the drill bit form a first space at intervals, and the lower layer groove and the lower section of the drill bit form a second space at intervals; the cutting ring is a hollow circular cylindrical structure with openings in the upper and lower sections, is clamped between the upper-layer groove and the lower-layer groove, is attached to the inner wall and is used for taking soil;
the connecting rod is of a hollow structure connected between the handle and the drill bit, and two L-shaped steel wires are arranged in the connecting rod; the vertical parts of the two L-shaped steel wires are arranged in the connecting rod in a penetrating mode, the upper cross sections of the vertical parts are arranged in the hollow structure of the handle in a penetrating mode and are connected with the winch, and the horizontal parts of the two L-shaped steel wires are arranged in the first space and the second space respectively and are used for cutting soil on the upper surface and the lower surface of the cutting ring under the driving of the rotating winch;
the storage box is a closed box body, the height in the box body is the sum of the thicknesses of the two permeable stones and the thickness of the cutting ring, soil taking is completed under the condition that the large buried depth soil sampling device is used for the large buried depth environment, meanwhile, soil cutting of the upper cross section and the lower cross section of the cutting ring is completed through the steel wire, the permeable stones are clamped on the upper cross section and the lower cross section of the cutting ring immediately after the soil is cut, and the cutting ring with the permeable stones clamped is placed into the storage box.
2. The apparatus of claim 1, wherein horizontal portions of the two L-shaped wires for cutting soil on the upper and lower surfaces of the cutting ring are caught in the upper and lower grooves, respectively, before cutting the soil.
3. The apparatus of claim 1, wherein the inner wall further comprises a first inner groove and a second inner groove, wherein the first inner groove is located between the upper groove and the upper section of the drill bit and the second inner groove is located between the lower groove and the lower section of the drill bit.
4. The apparatus of claim 3, wherein horizontal portions of the two L-shaped wires for cutting soil on the upper and lower surfaces of the cutting ring are caught in the first and second inner grooves, respectively, after cutting the soil.
5. The apparatus according to claim 1, wherein the L-corner portions of the two L-shaped wires are arc-shaped.
6. The apparatus of claim 5, wherein the corner portions have smooth surfaces.
7. The device of claim 1, wherein the same side of the inner wall and the outer wall is further provided with an opening and a cover plate matched with the opening respectively.
8. The device of claim 7, wherein the opening is for attaching and removing the cutting ring from the inner wall; the cover plate is used for fixing the cutting ring on the inner wall.
9. The apparatus of claim 1, wherein the drill bit is a hollow circular cylindrical structure and the lower cross-section of the drill bit is an open structure.
10. The apparatus of claim 1, wherein the connecting rod comprises a plurality of threadedly connected sub-connecting rods.
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| CN110820714B (en) * | 2019-11-29 | 2021-05-18 | 重庆工程职业技术学院 | Geological survey is with device that fetches earth |
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| 实用新型组合环刀在土壤取样方面的研制与应用;姚天宝等;《河南城建学院学报》;20140331;第23卷(第02期);第6-9页 * |
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| CN106248424A (en) | 2016-12-21 |
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