CN202869848U - Undisturbed soil column collector - Google Patents
Undisturbed soil column collector Download PDFInfo
- Publication number
- CN202869848U CN202869848U CN 201220549749 CN201220549749U CN202869848U CN 202869848 U CN202869848 U CN 202869848U CN 201220549749 CN201220549749 CN 201220549749 CN 201220549749 U CN201220549749 U CN 201220549749U CN 202869848 U CN202869848 U CN 202869848U
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- drilling pipe
- soil column
- undisturbed soil
- cutting ring
- earth pillar
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model discloses an undisturbed soil column collector which comprises a drilling rod, a drilling barrel and a cutting ring. The undisturbed soil column collector is characterized by further comprising a soil column barrel which is arranged inside the drilling barrel. The undisturbed soil column collector provided by the utility model is simple in structure and convenient and rapid to operate, not only is the collection efficiency of the undisturbed soil column improved, but also the original characteristics of the undisturbed soil column are maintained to the largest extent, the quality of the undisturbed soil column is improved, and undisturbed soil columns which are high in quality and longer in length can also be collected, so that various demands of soil scientific research experiments are met.
Description
Technical field
The utility model belongs to mechanical field, particularly a kind of undisturbed soil column collecting device.
Background technology
The field study of soil, the test of the soil physical property such as the soil weight, factor of porosity, the experimental study of the holard, salt and nutrient migration all need to carry out at the undisturbed soil earth pillar, the acquisition quality of soil column directly affects accuracy, the science of this type of research work.
At present, soil column mainly contains by sampling mode: section fetches earth, earth boring auger fetches earth.It is to utilize natural in the open air or the pre-existing topography drop that section fetches earth, and gathers soil column after perhaps excavating artificial section.Its advantage is to gather relatively large earth pillar, and the earth pillar original traits destroys few, and the earth pillar quality is high; Shortcoming is that manpower labour intensity is large, length consuming time, and efficient is low.This mode is suitable for collection, demonstration teaching of the medium-and-large-sized soil sampling of soil investigation etc., and applicable surface is narrow.The widespread use earth boring auger fetches earth in the practice, and existing earth boring auger is connected in sequence from top to bottom by drilling rod, drilling pipe and cutting ring.It is to utilize the cutting ring that fetches earth to gather soil column, and way is the opening that differs in size the drilling pipe wall setting of earth boring auger, or drilling pipe is formed by two parts interlock.Need to from drilling pipe, take out earth pillar when fetching earth, with instruments such as screwdrivers earth pillar be transferred in aluminium box or other vessel.The shortcoming of this mode is: soil its prototype structure in transfer process very easily is damaged, and affects the quality of soil column, especially for the comparatively loose soil of quality, more is difficult to obtain desirable soil column; Sampling thief opening part soil vulnerable to pollution during undisturbed soil column collecting, the primitive character of spoiled soil; Earth pillar is transferred to the aluminium box or other vessel not only take a large amount of sample times from drilling pipe, and must two people's compounding practices simultaneously; More fatal is, the soil column that this mode of fetching earth is difficult to be grown, and along with the development of production practices and scientific research, the soil column that more and more needs overlength, often require earth pillar length to reach 1 meter, in addition longer, and obviously this traditional earth boring auger mode of fetching earth is difficult to finish sampling operation.
Because the problems that exist in the above-mentioned existing undisturbed soil column collecting, designer of the present utility model relies on research work experience and abundant professional knowledge for many years, actively studied and innovated, finally developed a kind of undisturbed soil column collecting device of the present utility model.
The utility model content
In order to solve the above-mentioned problems in the prior art, the utility model provides a kind of undisturbed soil column collecting device of simple in structure, simple operation, not only improved the collecting efficiency of soil column, and the primitive character of the earth pillar that can maintain the original state to greatest extent, improve the quality of soil column, can also collect the longer soil column of high-quality length, to satisfy the various needs of soil science research experiment.
In order to solve the problems of the technologies described above, realize goal of the invention of the present utility model, the utility model has adopted following technical scheme:
A kind of undisturbed soil column collecting device comprises drilling rod, drilling pipe and cutting ring, characterized by further comprising the earth pillar cylinder, and it is arranged in the described drilling pipe;
The internal diameter of described cutting ring is less than or equal to the internal diameter of earth pillar cylinder;
The material of described earth pillar cylinder is organic glass, unorganic glass, aluminium, stainless steel or copper product;
Adopt welding or screw thread socket mode to be connected between described drilling rod and the drilling pipe;
The lower end of described drilling pipe and the upper end of cutting ring are equipped with internal thread or external thread, and the set internal thread of drilling pipe and the set external thread of cutting ring matches or the set external thread of drilling pipe and the set internal thread of cutting ring match;
The external diameter of the upper end threaded portion of described cutting ring equals the internal diameter of earth pillar cylinder greater than the internal diameter of the non-threaded part in lower end of drilling pipe external diameter and cutting ring;
Or the external diameter of the lower end threaded portion of described drilling pipe is less than the upper end external diameter of drilling pipe, and the internal diameter of the non-threaded part in lower end of cutting ring equals the internal diameter of earth pillar cylinder simultaneously;
Described drilling pipe comprises: the first semicircular cylinder and the second semicircular cylinder are respectively equipped with groove and set groove and form with the form interlock of complementation on the sidewall of two semicircular cylinders;
Be provided with in the vertical direction perforate on the sidewall of described drilling pipe;
The length of described earth pillar cylinder be provided with the inner face that concave station and set concave station extend to drilling pipe in the described cutting ring, and the internal diameter of described concave station equals the internal diameter of earth pillar cylinder greater than the length of drilling pipe.
Compared with prior art, the beneficial effects of the utility model are:
Undisturbed soil column collecting device of the present utility model after collector taken out, owing to do not need the soil sample in the collector is transferred in other containers such as aluminium box, the polybag, can obtain comparatively complete earth pillar from soil in sampling process.Thereby guaranteed preferably physical property and the chemistry of soil, so that the precision of soil sampling improves greatly, be conducive to the science and technology research of soil aspect.Use sample acquisition machine of the present utility model, collected specimens only need to be changed different earth pillar cylinders can carry out Quick Acquisition to a plurality of sampling points.The substitute mode of earth pillar cylinder is simple, quick, for the field soil picker has saved the time of collecting work and the input of manpower, has effectively improved collecting efficiency.The lower end of cutting ring is with downward-sloping population, by the rotation of drilling rod can be light the collector rotary-cut is entered soil, reduced labour intensity.The shortcoming such as overcome that existing sample acquisition machine speed is slow, working strength is large, the sample of complex structure, collection easily mixes.
Description of drawings
Fig. 1 is the sectional view of a kind of undisturbed soil column collecting device of the present utility model;
Fig. 2 is the partial enlarged drawing at collector I place;
Fig. 3 to Fig. 5 is the structural representation of drilling pipe and three kinds of annexations between the cutting ring of a kind of undisturbed soil column collecting device of the present utility model;
Fig. 6 is the structural representation that the drilling pipe of a kind of undisturbed soil column collecting device of the present utility model is formed by left and right sides two parts interlock;
Fig. 7 is the sectional view of A-B among Fig. 3;
Fig. 8 be a kind of undisturbed soil column collecting device of the present utility model drilling pipe be up and down uncovered structural representation;
Fig. 9 is the structural representation that offers open slot on the drilling pipe of a kind of undisturbed soil column collecting device of the present utility model;
Figure 10 is that the earth pillar tube length degree of a kind of undisturbed soil column collecting device of the present utility model is greater than the structural representation of the length of drilling pipe;
Figure 11 be a kind of undisturbed soil column collecting device of the present utility model the cutting ring structural representation.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail, but not as to restriction of the present utility model.
As depicted in figs. 1 and 2, Fig. 1 is the sectional view of a kind of undisturbed soil column collecting device of the present utility model, and Fig. 2 is the partial enlarged drawing at collector I place.A kind of undisturbed soil column collecting device of the present utility model is connected in sequence from top to bottom by drilling rod 1, drilling pipe 2 and cutting ring 3, is provided with in the drilling pipe 2 simultaneously and can inserts the earth pillar cylinder 4 of getting.
In the utility model earth pillar cylinder 4 by cutting ring 3 fastenings in drilling pipe 2 and the internal diameter of cutting ring 3 be less than or equal to the internal diameter of earth pillar cylinder 4, with fixing earth pillar cylinder 4 it can be moved in the course of work.
The material of earth pillar cylinder 4 is organic glass, unorganic glass, aluminium, stainless steel or copper product in the utility model.The earth pillar cylinder 4 of multiple types material makes things convenient for scientific and technical personnel to do related experiment, such as the field study of soil, and the test of the soil physical properties such as the soil weight, factor of porosity, the experiment of the holard, salt and nutrient migration.Select suitable earth pillar cylinder to take a sample, not only made things convenient for the picker, the more important thing is its directly accuracy, science of the above-mentioned various research work of impact.
In the utility model, adopt welding or screw thread socket mode to be connected between drilling rod 1 and the drilling pipe 2.Simultaneously the lower end of drilling pipe 2 and the upper end of cutting ring 3 are equipped with internal thread or external thread, and drilling pipe 2 set internal threads and cutting ring 3 set external threads match or drilling pipe 2 set external threads and cutting ring 3 set internal threads match.
To shown in Figure 5, under the prerequisite that all employing is threaded between drilling rod 1 and drilling pipe 2, below be three kinds of preferred embodiments such as Fig. 3:
1, as shown in Figure 3, the lower end of drilling pipe 2 is provided with internal thread, and the upper end of cutting ring 3 is provided with external thread, and drilling pipe 3 set internal threads and cutting ring 3 described external threads match;
2, as shown in Figure 4, the lower end of drilling pipe 2 is provided with external thread, and matches with the set internal thread in the upper end of cutting ring 3, and the external diameter of cutting ring 3 upper end threaded portions equals the internal diameter of earth pillar cylinder 4 greater than the internal diameter of drilling pipe 2 external diameters and cutting ring 3 non-threaded parts simultaneously;
3, as shown in Figure 5, the lower end of drilling pipe 2 is provided with the external diameter of lower end threaded portion of external thread and drilling pipe 2 less than the upper end external diameter of drilling pipe 2, and matches with the set internal thread in the upper end of cutting ring 3, and the internal diameter of cutting ring 3 non-threaded parts equals the internal diameter of earth pillar cylinder 4 simultaneously.
More than three kinds of different embodiment, guaranteed that collector in the course of the work, can closely cooperate between drilling pipe 2, cutting ring 3 and earth pillar cylinder 4 threes, the soil that cutting ring 3 places gather can be complete enter into earth pillar cylinder 4 inside, obtained than more complete earth pillar, thereby guaranteed preferably physical property and the chemistry of soil, so that the precision of soil sampling improves greatly, be conducive to the science and technology research of soil aspect.
A kind of undisturbed soil column collecting device of the present utility model is compared with existing earth pillar collector, and collected specimens only need to be changed different earth pillar cylinders 4 can carry out Quick Acquisition to a plurality of sampling points.Wherein the substitute mode of earth pillar cylinder 4 is simple, quick, for the field soil picker has saved the time of collecting work and the input of manpower, has effectively improved collecting efficiency.So in collecting work, the quick taking-up of earth pillar cylinder 4 becomes particularly important.
In order to make things convenient for the taking-up of earth pillar cylinder 4, so that improve the speed that gathers.The utility model is listed following four kinds of embodiment for you to choose:
1, drilling pipe 2 is equal-sized two semicircular cylinders, is interlocked by complemental groove 6 between two semicircular cylinder A and the B;
2, the upper and lower side of drilling pipe 2 is uncovered;
3, vertically offer a plurality of perforates 5 on the sidewall of drilling pipe 2;
4, the length of earth pillar cylinder 4 be provided with the inner face that concave station 7 and set concave station 7 extend to drilling pipe 2 in the cutting ring 3, and the internal diameter of described concave station 7 equals the internal diameter of earth pillar cylinder 4 greater than the length of drilling pipe 2.
Extremely shown in Figure 10 such as Fig. 6, each corresponding above four kinds of most preferred embodiments:
1, such as Fig. 6 and shown in Figure 7, drilling pipe 2 is equal-sized two semicircular cylinders, adopt complemental groove 6 to be interlocked between two semicircular cylinder A and the B, along the groove glide direction two parts are combined complete drilling pipe 2 of formation during use, after to be collected the finishing, sliding along groove in the other direction can be with drilling pipe 2 separately, taking-up earth pillar cylinder 4;
2, as shown in Figure 8, the upper and lower side of drilling pipe 2 is uncovered, after collection is finished, drilling rod 1 is unloaded from drilling pipe 2, directly takes out earth pillar cylinder 4 from drilling pipe 2 upper ends;
3, as shown in Figure 9, vertically offer a plurality of open slots 5 on the sidewall of drilling pipe 2, after to be collected the finishing, the picker can slowly move down along the direction of each open slot, takes out earth pillar cylinder 4.
4, as shown in figure 10, the length of earth pillar cylinder 4 is greater than the length of drilling pipe 2, and the internal diameter that is provided with concave station 7 and set concave station 7 in the cutting ring 3 is identical with the internal diameter of earth pillar cylinder 4.Like this, earth pillar cylinder 4 stretches out the part of drilling pipe 2 to be withstood by cutting ring 3 interior concave stations 7, to prevent in gatherer process earth pillar cylinder 4 landing from drilling pipe 2.After to be collected the finishing, take off cutting ring 3, can take out easily earth pillar cylinder 4.
As shown in figure 11, the rotary cutting effect of passing through cutting edge when downward-sloping cutting edge is sampled is formed on the bottom that the outside of cutting ring 3 is centrum shape and cutting ring 3, has reduced soil-entering resistance, make collector more easily enter soil, keep the soil sample original state, reduced work difficulty, improved simultaneously work efficiency.
A kind of undisturbed soil column collecting device is put into drilling pipe 2 with earth pillar cylinder 4 in use in the utility model, and cutting ring 3 and drilling pipe 2 are screwed; Collector is stood on ground, and both hands are being held drilling rod 1 and are being rotated back and forth, and press down simultaneously (firmly want evenly, dynamics will be decided on the shearing strength of soil, to keep the natural situation of soil); Taking-up collector after to be collected the finishing takes out earth pillar cylinder 4, repeats above step, just can carry out next time soil sample collection.
The utility model provides a kind of simple in structure, easy to operate undisturbed soil column collecting device, and in sampling process, only needing to change different earth pillar cylinders 4 can carry out Quick Acquisition to a plurality of sampling points, simple to operate.Change rapidly earth pillar cylinder 4, effectively improved operating efficiency.Because the soil in the earth pillar cylinder 4 is not subject to the impact of extraneous meteorological condition, has avoided larger error, has improved the accuracy of soil scientific research.Simultaneously, can also collect the longer soil column of high-quality length, to satisfy the various needs of soil science research experiment.
Above embodiment is exemplary embodiment of the present invention only, is not used in restriction the present invention, and protection scope of the present invention is defined by the claims.Those skilled in the art can make various modifications or be equal to replacement the present invention in essence of the present invention and protection domain, this modification or be equal to replacement and also should be considered as dropping in protection scope of the present invention
Claims (9)
1. a undisturbed soil column collecting device comprises drilling rod, drilling pipe and cutting ring, characterized by further comprising the earth pillar cylinder, and it is arranged in the described drilling pipe.
2. undisturbed soil column collecting device according to claim 1, it is characterized in that: the internal diameter of described cutting ring is less than or equal to the internal diameter of earth pillar cylinder.
3. undisturbed soil column collecting device according to claim 1, it is characterized in that: the material of described earth pillar cylinder is organic glass, unorganic glass, aluminium, stainless steel or copper product.
4. undisturbed soil column collecting device according to claim 1 is characterized in that: adopt welding or screw thread socket mode to be connected between described drilling rod and the drilling pipe.
5. undisturbed soil column collecting device according to claim 1, it is characterized in that: the lower end of described drilling pipe and the upper end of cutting ring are equipped with internal thread or external thread, and the set internal thread of drilling pipe and the set external thread of cutting ring matches or the set external thread of drilling pipe and the set internal thread of cutting ring match.
6. undisturbed soil column collecting device according to claim 5 is characterized in that:
The external diameter of the upper end threaded portion of described cutting ring equals the internal diameter of earth pillar cylinder greater than the internal diameter of the non-threaded part in lower end of drilling pipe external diameter and cutting ring;
Or the external diameter of the lower end threaded portion of described drilling pipe is less than the upper end external diameter of drilling pipe, and the internal diameter of the non-threaded part in lower end of cutting ring equals the internal diameter of earth pillar cylinder simultaneously.
7. undisturbed soil column collecting device according to claim 1, it is characterized in that: described drilling pipe comprises: the first semicircular cylinder and the second semicircular cylinder are respectively equipped with groove and set groove and form with the form interlock of complementation on the sidewall of two semicircular cylinders.
8. undisturbed soil column collecting device according to claim 1 is characterized in that: be provided with in the vertical direction perforate on the sidewall of described drilling pipe.
9. undisturbed soil column collecting device according to claim 1, it is characterized in that: the length of described earth pillar cylinder is greater than the length of drilling pipe, be provided with the inner face that concave station and set concave station extend to drilling pipe in the described cutting ring, and the internal diameter of described concave station equals the internal diameter of earth pillar cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220549749 CN202869848U (en) | 2012-10-24 | 2012-10-24 | Undisturbed soil column collector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220549749 CN202869848U (en) | 2012-10-24 | 2012-10-24 | Undisturbed soil column collector |
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| CN202869848U true CN202869848U (en) | 2013-04-10 |
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Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103293022A (en) * | 2013-05-27 | 2013-09-11 | 中国科学院、水利部成都山地灾害与环境研究所 | Small-sized soil auger with functions of collecting and filling soil sample |
| CN103364222A (en) * | 2013-07-09 | 2013-10-23 | 华南理工大学 | Combined soil sampler capable of sampling in layering manner |
| CN103364225A (en) * | 2013-07-18 | 2013-10-23 | 中交第三航务工程勘察设计院有限公司 | Silty fluid mud collecting device |
| CN103630422A (en) * | 2013-11-11 | 2014-03-12 | 南京信息工程大学 | Oppositely assembled soil sampling tube and soil sampling method |
| CN105910846A (en) * | 2016-06-24 | 2016-08-31 | 镇江市建科工程质量检测中心有限公司 | Soil-sampling machine for testing soil density through cutting-ring method |
| CN105954059A (en) * | 2016-06-01 | 2016-09-21 | 青岛农业大学 | Convenient undisturbed soil taking device |
| CN106014403A (en) * | 2016-07-13 | 2016-10-12 | 华南理工大学 | Direct-pressing sleeve type situ soil column collector |
| CN106017983A (en) * | 2016-07-25 | 2016-10-12 | 甘肃农业大学 | Multifunctional lawn soil sampler |
| CN106198097A (en) * | 2016-07-15 | 2016-12-07 | 北京林业大学 | A kind of undisturbed soil sampling device |
| CN106353131A (en) * | 2016-08-30 | 2017-01-25 | 中国科学院寒区旱区环境与工程研究所 | Frozen soil sampler |
| CN106644572A (en) * | 2017-02-08 | 2017-05-10 | 重庆市潼南区盛元农业开发有限公司 | Agricultural soil sampling device |
| CN107907366A (en) * | 2017-12-28 | 2018-04-13 | 长安大学 | A kind of undisturbed soil soil test standard soil body sample preparation facilities |
| CN107976332A (en) * | 2017-12-25 | 2018-05-01 | 泉州师范学院 | A kind of simplicity labour-saving field soil column sampling apparatus |
| CN108562717A (en) * | 2018-05-09 | 2018-09-21 | 台州创兴环保科技有限公司 | A kind of portable soil pollution diagnosis equipment |
| CN108645996A (en) * | 2018-05-09 | 2018-10-12 | 台州创兴环保科技有限公司 | Soil pollution detection device |
| CN109991032A (en) * | 2017-12-30 | 2019-07-09 | 中国人民解放军63653部队 | Multipoint synchronous clay column core sampler |
| CN110579372A (en) * | 2019-09-18 | 2019-12-17 | 四川大学 | novel undisturbed soil column sampling device and use method thereof |
| CN110834793A (en) * | 2019-12-17 | 2020-02-25 | 四川省科源工程技术测试中心 | Undisturbed soil sample transport case |
| CN112816248A (en) * | 2020-12-14 | 2021-05-18 | 南京林业大学 | Sampling device for in-situ drilling of undisturbed soil column and use method thereof |
-
2012
- 2012-10-24 CN CN 201220549749 patent/CN202869848U/en not_active Expired - Fee Related
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103293022A (en) * | 2013-05-27 | 2013-09-11 | 中国科学院、水利部成都山地灾害与环境研究所 | Small-sized soil auger with functions of collecting and filling soil sample |
| CN103364222A (en) * | 2013-07-09 | 2013-10-23 | 华南理工大学 | Combined soil sampler capable of sampling in layering manner |
| CN103364222B (en) * | 2013-07-09 | 2016-03-02 | 华南理工大学 | A kind of combined type soil sampler realizing stratified sampling |
| CN103364225A (en) * | 2013-07-18 | 2013-10-23 | 中交第三航务工程勘察设计院有限公司 | Silty fluid mud collecting device |
| CN103364225B (en) * | 2013-07-18 | 2015-10-28 | 中交第三航务工程勘察设计院有限公司 | Muddy Bottoms mud scum harvester |
| CN103630422A (en) * | 2013-11-11 | 2014-03-12 | 南京信息工程大学 | Oppositely assembled soil sampling tube and soil sampling method |
| CN105954059A (en) * | 2016-06-01 | 2016-09-21 | 青岛农业大学 | Convenient undisturbed soil taking device |
| CN105910846A (en) * | 2016-06-24 | 2016-08-31 | 镇江市建科工程质量检测中心有限公司 | Soil-sampling machine for testing soil density through cutting-ring method |
| CN105910846B (en) * | 2016-06-24 | 2020-02-07 | 镇江市建设工程质量检测中心有限公司 | Soil sampler for testing soil density by ring cutter method |
| CN106014403A (en) * | 2016-07-13 | 2016-10-12 | 华南理工大学 | Direct-pressing sleeve type situ soil column collector |
| CN106198097A (en) * | 2016-07-15 | 2016-12-07 | 北京林业大学 | A kind of undisturbed soil sampling device |
| CN106198097B (en) * | 2016-07-15 | 2019-01-18 | 北京林业大学 | A kind of undisturbed soil sampling device |
| CN106017983A (en) * | 2016-07-25 | 2016-10-12 | 甘肃农业大学 | Multifunctional lawn soil sampler |
| CN106353131A (en) * | 2016-08-30 | 2017-01-25 | 中国科学院寒区旱区环境与工程研究所 | Frozen soil sampler |
| CN106644572A (en) * | 2017-02-08 | 2017-05-10 | 重庆市潼南区盛元农业开发有限公司 | Agricultural soil sampling device |
| CN107976332A (en) * | 2017-12-25 | 2018-05-01 | 泉州师范学院 | A kind of simplicity labour-saving field soil column sampling apparatus |
| CN107976332B (en) * | 2017-12-25 | 2024-05-07 | 泉州师范学院 | Simple and convenient laborsaving open-air undisturbed soil column sampling device |
| CN107907366A (en) * | 2017-12-28 | 2018-04-13 | 长安大学 | A kind of undisturbed soil soil test standard soil body sample preparation facilities |
| CN109991032A (en) * | 2017-12-30 | 2019-07-09 | 中国人民解放军63653部队 | Multipoint synchronous clay column core sampler |
| CN108562717A (en) * | 2018-05-09 | 2018-09-21 | 台州创兴环保科技有限公司 | A kind of portable soil pollution diagnosis equipment |
| CN108645996A (en) * | 2018-05-09 | 2018-10-12 | 台州创兴环保科技有限公司 | Soil pollution detection device |
| CN110579372A (en) * | 2019-09-18 | 2019-12-17 | 四川大学 | novel undisturbed soil column sampling device and use method thereof |
| CN110834793A (en) * | 2019-12-17 | 2020-02-25 | 四川省科源工程技术测试中心 | Undisturbed soil sample transport case |
| CN110834793B (en) * | 2019-12-17 | 2024-04-16 | 四川省科源工程技术测试中心有限责任公司 | Undisturbed soil sample transport case |
| CN112816248A (en) * | 2020-12-14 | 2021-05-18 | 南京林业大学 | Sampling device for in-situ drilling of undisturbed soil column and use method thereof |
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Granted publication date: 20130410 Termination date: 20131024 |