CN105954060A - Soil sampling method and device - Google Patents
Soil sampling method and device Download PDFInfo
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- CN105954060A CN105954060A CN201610426206.XA CN201610426206A CN105954060A CN 105954060 A CN105954060 A CN 105954060A CN 201610426206 A CN201610426206 A CN 201610426206A CN 105954060 A CN105954060 A CN 105954060A
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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 relates the field of sampling devices, in particular to a soil sampling method and device. The soil sampling device comprises a sampling shell extending vertically, a soil inlet is formed in the sampling shell, and a soil channel communicated with the soil inlet is formed in the sampling shell. The soil sampling device further comprises separating plates used for carrying out gradient separation on soil in the soil channel, the separating plates are arranged in the sampling shell, and are in movable fit with the soil channel in the cross section direction of the sampling shell or are provided with action ends capable of acting in the cross section direction of the sampling shell, and a separating driving mechanism is further arranged in the sampling shell and is used for driving the separating plates or the action ends of the separating plates to enter or quit the soil channel in the cross section direction of the sampling shell to achieve gradient separation on soil. The problem that at present, the soil sampling efficiency is low is solved.
Description
Technical field
The present invention relates to sampler field, particularly to a kind of soil sample method and device.
Background technology
Soil sampling is the basis of research soil information, is to obtain the oxygen content of soil, carbon dioxide content, humiture information and all kinds of metal finger target important prerequisite condition.The soil of different gradients is different because of the distance on distance earth's surface, and the soil information of each gradient is different, and the soil information studying same location difference gradient has important Research Significance for the suitability probing into crops.Traditional soil sampling appts is all single sampling, never soil is carried out gradient separations.Even carrying out the most artificial after Cai Jiing point gradient, but the sample soil property because of collecting is the most loose, the standard of classification gradient is not easy to hold, and actual separation process of getting up is cumbersome, easily pedotheque is done scattered.nullIn order to solve that the soil collected is carried out the problem that gradient separations operation is difficult to hold，Notification number is CN203629879U、The day for announcing be 2013.12.26 Chinese patent disclosed in a kind of Sandy Soil sampler，Housing is i.e. sampled including sampling box，The lower end of sampling box is provided with the uncovered mouth that i.e. buries，The interpolation slit being flexibly connected with soil layering inserted sheet it is additionally provided with before sampling box，First sampling box is pressed into during use underground depth desired，Then excavate along the one side being i.e. provided with interpolation slit before sampling box，In soil layering sheet is inserted interpolation slit, soil is carried out gradient separations，The soil sample of different gradients in taking out sampling box and taking out sampling box，This soil sample method operation complexity，The soil by sampling box side is needed to push aside before soil is carried out gradient separations，Soil gradient separations operation complexity，Soil sample is extremely inefficient.
Summary of the invention
It is an object of the invention to provide a kind of soil sample method, to solve the inefficient problem of current soil sample；It addition, the present invention also aims to provide a kind of soil sampling apparatus for above-mentioned soil sample method.
For achieving the above object, the technical scheme is that a kind of soil sample method, comprise the following steps: 1) ensure that separating plate is in outside the soil passage in sampling housing, sampling housing is inserted subsurface, makes soil enter the soil passage in sampling housing by the mouth that buries on sampling housing；2) separating plate being then arranged in sampling housing by separating drive mechanism to drive or separating plate motion end enter soil passage along sampling housing cross-sectional direction action and the soil in soil passage are carried out gradient separations；3), after completing gradient separations, sampling housing is proposed from subsurface, takes out the soil after gradient separations, complete sampling.
Before step 1), the position of up-down adjustment separating plate is to determine the gradient of soil.
Described separating plate is the elastic plate being wrapped on winding up roller, step 2) in separation drive mechanism realize the gradient separations of soil by driving the motion end driving separating plate of winding up roller to enter soil passage.
A kind of soil sampling apparatus for above-mentioned soil sample method, including vertically extending sampling housing, sampling housing is provided with the mouth that buries, it is provided with, in sampling housing, the soil passage connected with the mouth that buries, also include the separating plate for the soil in soil passage being carried out gradient separations, described separating plate is assemblied in sampling housing, described separating plate has along sampling housing cross-sectional direction clearance fit or separating plate with soil passage can be along the motion end of sampling housing cross-sectional direction action, it is additionally provided with in sampling housing for driving the motion end of separating plate or separating plate to enter or exit soil passage along sampling housing cross-sectional direction to realize soil is carried out the separation drive mechanism of gradient separations.
Being provided with probe tube, the described inner chamber that soil passage is probe tube in described sampling housing, probe tube is provided with the separating plate corresponding with separating plate and imports and exports, and described separating plate is in the cavity between probe tube and sampling housing with separating drive mechanism.
The corresponding up and down separating plate installing rack being assemblied on sampling housing and the gradient governor motion for up-down adjustment separating plate position with separating plate it is additionally provided with between described probe tube with sampling housing, described separating plate is arranged on the separating plate installing rack of correspondence, and described gradient governor motion includes being installed in the adjustment seat on separating plate installing rack and for retaining mechanism adjustment seat and separating plate fixed mount being locked on housing.
Described retaining mechanism includes the adjusting knob being arranged in adjustment seat and the telescopic positioning device being in transmission connection with adjusting knob, described telescopic positioning device is provided with and stretches out position and retraction position, described gradient governor motion also includes that at least two is arranged along the vertical direction and is in the location structure that the telescopic positioning device block stretching out position coordinates, and described telescopic positioning device separates board mounting stand when being in retraction position can up-down adjustment.
Corresponding with separating plate and the up and down separating plate installing rack being assemblied on sampling housing and the gradient governor motion for up-down adjustment separating plate position it is additionally provided with between described probe tube with sampling housing, described separating plate is arranged on the separating plate installing rack of correspondence, being installed with vertically extending gear bar on separating plate installing rack, described gradient governor motion includes rotating being assemblied on sampling housing and coordinates with gear bar transmission for the regulation gear of up-down adjustment separating plate and the regulation handle that is connected with regulation gear drive.
It is provided with and separating plate winding up roller one to one between described probe tube and sampling housing, described separating plate is the elastic plate being wrapped on winding up roller, separating plate has can be along the motion end of sampling housing cross-sectional direction action, it is additionally provided with the motion end with separating plate between probe tube with sampling housing and guides, along sampling housing cross-sectional direction, the guide coordinated, separate drive mechanism by driving winding up roller to make the motion end of separating plate enter or exit soil passage under the guide effect of guide along sampling housing cross-sectional direction to realize soil is carried out gradient separations.
Described sampling housing bottom is provided with hollow boring bit, and the described mouth that buries is arranged on hollow boring bit, be provided with in described drill bit with soil channel connection enter soil passage.
It is provided with soil passage and separating plate in the invention have the benefit that sampling housing, after housing insertion subsurface will be sampled during use, soil is entered soil passage by the mouth that buries, the motion end of separating plate or separating plate enters the gradient separations of soil in soil passage realizes soil passage under the driving separating drive mechanism, compared with needing during with current soil gradient separations to push the soil of sampling housing side aside, the sampler of the present invention can be by realizing the soil automatization gradient separations in soil passage, easy to operate simply, improve the efficiency of soil gradient separations, solve the inefficient problem of current soil sample.
Update a step, be provided with gradient governor motion can with the position of up-down adjustment separating plate, easy to operate simply.
Further, the method being put separating plate by winding up roller volume can reduce taking up room of separating plate, conveniently processing.
Accompanying drawing explanation
Fig. 1 is the structural representation of the specific embodiment 1 of a kind of soil sampling apparatus of the present invention；
Fig. 2 is the partial view of the specific embodiment 1 of a kind of soil sampling apparatus of the present invention；
Fig. 3 is the structural representation of the motor driving separating plate of the specific embodiment 1 of a kind of soil sampling apparatus of the present invention；
Fig. 4 is the structural representation of the probe tube of the specific embodiment 1 of a kind of soil sampling apparatus of the present invention；
Fig. 5 is the use flow chart of steps of the specific embodiment 1 of a kind of soil sampling apparatus of the present invention；
Fig. 6 is the structural representation of the gradient actuator of the specific embodiment 1 of a kind of soil sampling apparatus of the present invention；
Fig. 7 is the structural representation of the catching sheet of the specific embodiment 1 of a kind of soil sampling apparatus of the present invention.
Detailed description of the invention
Below in conjunction with the accompanying drawings embodiments of the present invention are described further.
A kind of specific embodiment 1 of the soil sampling apparatus of the present invention, as shown in Figures 1 to 7, soil sampling apparatus includes vertically extending sampling housing 2, probe tube 5 and separating plate 12, sampling housing is provided with the mouth that buries, it is provided with, in sampling housing, the soil passage connected with the mouth that buries, in the present embodiment, soil passage is the inner chamber of probe tube.The side of probe tube is provided with the separating plate being inserted and removed from for separating plate 12 and imports and exports 16, in the present embodiment, separating plate 12 is provided with five, separating plate is imported and exported and is provided with nine, in other embodiments of the invention, the quantity that separating plate and separating plate are imported and exported can be arranged according to actual needs, separating plate can arrange at least one, in separating plate, at least one corresponding at least two separating plate is imported and exported, the soil gradient that so could meet probe tube can be adjusted as required, in the middle of reality application, the quantity of separating plate can also be identical with the quantity that separating plate is imported and exported, need can to select to be partially separated plate during different gradients not work, thus the separating plate correspondence at least two separating plate realizing work is imported and exported.
Probe tube is vertically extending, and the separating plate on probe tube imports and exports vertical arrangement along the vertical direction.Be additionally provided with on probe tube and import and export the mouth 18 that fetches earth of 16 circumferentially adjacent settings with separating plate, fetch earth mouthful at be provided with the sampling gate of monoblock type semicircle pillar door type structure, it is possible to ensure that the sample after gathering takes out smoothly.Probe tube inner chamber is to enter the soil passage that Tu Kou connects with the probe tube bottom probe tube.It is multi-layer segmentation mouth formula structure that probe tube is provided with the side of separating plate import and export, probe tube between each separating plate is imported and exported is provided with the gradient graduation mark for indicating soil gradient magnitude, the distance that adjacent two separating plates are imported and exported is the size of minimum division value on gradient graduation mark, so ensure that during gradient regulates, separating plate can smoothly enter in probe tube, carries out the gradient separations work of soil.Probe tube bottom probe tube enters soil mouth 17 for frustum cone structure, the lower end of probe tube connects the drill bit 3 having hollow type structure, soil channel connection is entered in the middle of bury mouth and the drill bit of sampling housing, drill bit is connected by the helicitic texture being mutually matched with thief rod, the internal soil passage that enters ensure that connect seamless with the mouth that fetches earth of probe tube, it is possible to realizes the seamless link with drill bit.In the present embodiment, being threaded the purpose that structure connects, be can be according to the difference of soil environment, selecting the hollow type drill bit of different types, in other embodiments of the invention, above-mentioned drill bit can also be connected by other non-disconnectable connected modes such as welding with probe tube.
In order to realize when probe tube is in subsurface, probe tube being layered, need to be arranged on separating plate the inside of sampling housing, be i.e. arranged in the cavity between probe tube and sampling housing.In the present embodiment, it is provided with probe tube in sampling housing, sampling housing surrounds top with probe tube and has the annular housing 4 of opening, sampling housing is provided with the separating plate installing rack 23 equal with separating plate quantity, separating plate installing rack is arranged in annular housing, a winding up roller 11 putting separating plate for volume it is rotatably equipped with on each separating plate installing rack, in the present embodiment, separating plate is the elastic plate being wrapped on winding up roller 11, separating plate has can be along the motion end of sampling housing cross-sectional direction action, it is additionally provided with the motion end with separating plate between probe tube with sampling housing and guides, along sampling housing cross-sectional direction, the guide coordinated, it is provided with in sampling housing for driving the motion end of separating plate to enter or exit soil passage along sampling housing cross-sectional direction to realize soil is carried out the separation drive mechanism of gradient separations.In the present embodiment, guide is the guide plate being arranged on separating plate installing rack, and in other embodiments, above-mentioned guide can also be the guide rail being arranged on separating plate both sides.When separating plate is not inserted in probe tube, separating plate is wrapped on winding up roller 11.In the present embodiment, separating drive mechanism is and winding up roller 11 direct current generator 10 one to one that each winding up roller is operated alone by a direct current generator, and the press button that direct current generator is corresponding is arranged on the control panel at probe tube top.Because DC generator speed reaction is fast, easily realizing rotating, direct current generator drives winding up roller work, and separating plate motion end realizes the mask work to the soil in probe tube under the drive of winding up roller.Concrete is to separate coiled sheet on winding up roller when taking soil sampling apparatus and being in non-duty.When soil sampling apparatus needs the soil carrying out different gradient to separate, starting the shift knob 20 of corresponding direct current generator, separating plate can be released and carry out detached job.Start the shift knob only starting correspondence when that motor driving separating plate.Separating plate is imported and exported to be provided with and is guided, along sampling housing cross-sectional direction, the guide plate coordinated with separating plate motion end, for being introduced in probe tube by separating plate motion end.Certainly, in other embodiments, this guide plate can also be installed on winding up roller, and its upper-lower position changes with the change of winding up roller position.Be additionally provided with between probe tube and sampling housing for by up-down adjustment separating plate position with the gradient governor motion of soil gradient in regulation probe tube, gradient governor motion includes being installed in the adjustment seat on separating plate installing rack and for retaining mechanism adjustment seat and separating plate fixed mount being locked on housing.
Adjustment seat includes the regulation pipe 26 that be connected and along the longitudinal direction extend fixing with separating plate installing rack 23, front end and the separating plate installing rack 23 of regulation pipe is fixing to be connected, and retaining mechanism includes being symmetrically arranged at the vertically extending catching sheet 25 in the both sides of regulation pipe, is arranged on and is connected with knob and is arranged on the spring 21 regulated in pipe and the mobile feeler 22 being connected with spring regulating the knob 9 of rear end of pipe 26.Knob 9 spinning is on regulation pipe, spring 21 extends along the longitudinal direction, and the rear end of spring is fixed on knob, and front end is fixed with mobile feeler 22, catching sheet is provided with for the interception groove 24 corresponding with mobile feeler, and regulation pipe is provided with the mobile feeler corresponding with intercepting groove and stretches out hole.The rotation of knob can drive the flexible of spring, mobile feeler stretches out the interception groove block cooperation that mobile feeler stretches out on Kong Bingyu catching sheet when knob drives spring-compressed, and regulation pipe of retracting under the pulling of spring when knob drives spring elongation, mobile feeler is made to separate with intercepting groove, now separating plate installing rack declines under gravity, need to separate timing on fixing frame plate, make knob drive spring elongation to pull mobile feeler to retract and regulate pipe, then will carry on separating plate installing rack.If gradient is required not reach five layers, can regulate successively according to knob order from top to bottom according to actual slice gradient requirement.
On sampling housing 2, the position corresponding with gradient governor motion is provided with regulation door, needs operation knob to carry out during gradient regulation and opens regulation door, closes regulation door after regulation.Ensure that during sampler work, sampler is complete pole structure.The gradient graduation mark extended up and down of standard is carved with in the both sides of knob, facilitates user according to demand from main regulation sampled gradients.
The top of sampling housing is provided with the propeller for driving probe tube and sampling housing to rotate, and propeller 1 is driven by motor, and motor internal carries accumulator, is guaranteed in outdoor situation and also can normally work.Propeller 1 is provided with handle 7, and during use, one is held by handle, and one is held by switch, is inserted in soil by sampler.Propeller provides major impetus source for sampler, during sampling, only need to hold the direction of sampler work, be greatly saved labour force, improve sampling efficiency.Thief rod and power propeller are detachable docking structure, are connected with each other by mouthpiece coupling.The power propeller of different capacity type can be selected according to the specific environment of sampling, or replace the propeller damaged.Arranging another purpose dismountable is when power propeller can substitute with matched artificial push rod when without electricity.
The top of probe tube is additionally provided with whether soil height in detecting probe tube reaches the laser detector of setting value, and laser detector is positioned at motor and drives the top of separating plate, concordant with the top of probe tube.The light source inlet 15 being arranged over laser detector of probe tube, is provided with sensitive film 19 with laser detector light source inlet along probe tube side diametrically.Being provided with the display lamp 13 being connected with laser detector on thief rod control panel, display lamp is red light and green light, when the shift knob of laser detector starts, green light can be bright, when the sample gathered reaches the top of probe tube, when sensitive film is not felt by light source, red light can luminescence.
Soil sample method is: the first step, determines sampled gradients value.Second step, by the rotary knob of adjustable gradient actuator, regulates the Grad needed for each button correspondence, and such motor drives the position meeting correspondence of separating plate at required gradient locations.3rd step, puts into probe tube in sampling housing.4th step, after ready, opens laser inspection device switch, then laser inspection device normally works.5th step, starts power propeller, is grasped the operative orientation of sampler, and the balance of device self by handle.6th step, checks that laser designation red light is the most luminous.If red light does not works, then show that the soil sample that sampler is gathered does not arrives the top of probe tube, then continue to advance sampling apparatus, until instruction red light lights.If red light is lighted, then starting the press button that five direct current generators are corresponding, when direct current generator rotates, separating plate carries out separating soil-working according to the gradient arranged.7th step, after gradient separations work is carried out, closes all of press button.8th step, takes out probe tube from the inside of thief rod.9th step, opens the gate-type switch of probe tube, will take out by the soil sample that gradient separations is good, and point different gradient regions are placed, and wait for the analysis of soil information.
A kind of specific embodiment 2 of the soil sampling apparatus of the present invention, this soil sampling apparatus differs only in the specific embodiment 1 of above-mentioned a kind of soil sampling apparatus: vertically extending gear bar fixed on separating plate installing rack, and described gradient governor motion includes rotating the regulation handle being assemblied on sampling housing the regulation gear coordinated with gear bar transmission and being connected with regulation gear drive.Realize the up-down adjustment to separating plate installing rack by the transmission of rack-and-pinion, thus realize the regulation to soil gradient.
The specific embodiment of a kind of soil sample method of the present invention, this soil sample method is identical with the soil sample method described in the specific embodiment 1 of above-mentioned a kind of soil sampling apparatus, is not repeating.
In other embodiments of a kind of soil sample method of the present invention and the soil sampling apparatus that realizes this soil sample method, above-mentioned separating plate can also be without being flexible board, guide along the longitudinal direction in separating plate being arranged on annular housing by increasing the space of annular housing and with the separating plate installing rack in annular housing and coordinate, electric pushrod can be set on separating plate installing rack and realize the driving to separating plate, certain above-mentioned electric pushrod can also is that the drive mechanism that motor coordinates with rack-and-pinion, now separating plate along sampling housing cross-sectional direction clearance fit with soil passage and enters under the driving separating drive mechanism or exits soil passage；Annular housing can also be for completely enclosed formula；Above-mentioned separation drive mechanism can also only arrange one, now on winding up roller, travelling gear is set, and it is provided with a motor separating drive mechanism, motor drives all of winding up roller to rotate by chain, and now gradient governor motion should first make the travelling gear on winding up roller separate with chain when regulating separating plate upper-lower position；Above-mentioned sampling gate and the mouth that fetches earth can not also set, and fetched earth step by step by the mouth that buries of sampling housing, first the separating plate of the bottom exits soil passage when fetching earth, and take out the pedotheque of the bottom, take out the pedotheque in soil passage the most successively；Above-mentioned regulation door can not also set, and the most above-mentioned regulation pipe is fixed on sampling housing and cuts knob and stretch out regulation door.
Claims (10)
1. a soil sample method, it is characterised in that comprise the following steps: 1) ensure that separating plate is in outside the soil passage in sampling housing, sampling housing is inserted subsurface, makes soil enter the soil passage in sampling housing by the mouth that buries on sampling housing；2) separating plate being then arranged in sampling housing by separating drive mechanism to drive or separating plate motion end enter soil passage along sampling housing cross-sectional direction action and the soil in soil passage are carried out gradient separations；3), after completing gradient separations, sampling housing is proposed from subsurface, takes out the soil after gradient separations, complete sampling.
Soil sample method the most according to claim 1, it is characterised in that: before step 1), the position of up-down adjustment separating plate is to determine soil gradient.
Soil sample method the most according to claim 1 and 2, it is characterized in that: described separating plate is the elastic plate being wrapped on winding up roller, step 2) in separation drive mechanism realize the gradient separations of soil by driving the motion end driving separating plate of winding up roller to enter soil passage.
4. the soil sampling apparatus for soil sample method as claimed in claim 1, including vertically extending sampling housing, sampling housing is provided with the mouth that buries, it is provided with, in sampling housing, the soil passage connected with the mouth that buries, also include the separating plate for the soil in soil passage being carried out gradient separations, it is characterized in that: described separating plate is assemblied in sampling housing, described separating plate has along sampling housing cross-sectional direction clearance fit or separating plate with soil passage can be along the motion end of sampling housing cross-sectional direction action, it is additionally provided with in sampling housing for driving the motion end of separating plate or separating plate to enter or exit soil passage along sampling housing cross-sectional direction to realize soil is carried out the separation drive mechanism of gradient separations.
Soil sampling apparatus the most according to claim 4, it is characterized in that: in described sampling housing, be provided with probe tube, the described inner chamber that soil passage is probe tube, probe tube is provided with the separating plate corresponding with separating plate and imports and exports, and described separating plate is in the cavity between probe tube and sampling housing with separating drive mechanism.
Soil sampling apparatus the most according to claim 5, it is characterized in that: between described probe tube with sampling housing, be additionally provided with the corresponding up and down separating plate installing rack being assemblied on sampling housing and the gradient governor motion for up-down adjustment separating plate position with separating plate, described separating plate is arranged on the separating plate installing rack of correspondence, and described gradient governor motion includes being installed in the adjustment seat on separating plate installing rack and for retaining mechanism adjustment seat and separating plate fixed mount being locked on housing.
Soil sampling apparatus the most according to claim 6, it is characterized in that: described retaining mechanism includes the adjusting knob being arranged in adjustment seat and the telescopic positioning device being in transmission connection with adjusting knob, described telescopic positioning device is provided with and stretches out position and retraction position, described gradient governor motion also includes that at least two is arranged along the vertical direction and is in the location structure that the telescopic positioning device block stretching out position coordinates, and described telescopic positioning device separates board mounting stand when being in retraction position can up-down adjustment.
Soil sampling apparatus the most according to claim 5, it is characterized in that: between described probe tube with sampling housing, be additionally provided with corresponding with separating plate and the up and down separating plate installing rack being assemblied on sampling housing and the gradient governor motion for up-down adjustment separating plate position, described separating plate is arranged on the separating plate installing rack of correspondence, vertically extending gear bar it is installed with on separating plate installing rack, described gradient governor motion includes rotating being assemblied on sampling housing and coordinates with gear bar transmission for the regulation gear of up-down adjustment separating plate and the regulation handle that is connected with regulation gear drive.
9. according to the soil sampling apparatus described in any one of claim 4-8, it is characterized in that: be provided with and separating plate winding up roller one to one between described probe tube and sampling housing, described separating plate is the elastic plate being wrapped on winding up roller, separating plate has can be along the motion end of sampling housing cross-sectional direction action, it is additionally provided with the motion end with separating plate between probe tube with sampling housing and guides, along sampling housing cross-sectional direction, the guide coordinated, separate drive mechanism by driving winding up roller to make the motion end of separating plate enter or exit soil passage under the guide effect of guide along sampling housing cross-sectional direction to realize soil is carried out gradient separations.
10. according to the soil sampling apparatus described in any one of claim 4-8, it is characterised in that: described sampling housing bottom is provided with hollow boring bit, and the described mouth that buries is arranged on hollow boring bit, be provided with in described drill bit with soil channel connection enter soil passage.
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| CN201610426206.XA CN105954060B (en) | 2016-06-16 | 2016-06-16 | A kind of soil sample method and device |
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| CN201610426206.XA CN105954060B (en) | 2016-06-16 | 2016-06-16 | A kind of soil sample method and device |
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| CN105954060B CN105954060B (en) | 2019-02-05 |
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| CN106644567A (en) * | 2016-12-02 | 2017-05-10 | 刘德平 | Surface soil sampling device for environmental detection |
| CN107478461A (en) * | 2017-08-15 | 2017-12-15 | 无锡建设监理咨询有限公司 | A kind of project supervision drawing out soil equipment and soil basketing method |
| 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 |
| CN108680386A (en) * | 2018-07-02 | 2018-10-19 | 楼赞赞 | A kind of Sandy Soil layered weighting equipment |
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| CN109752209A (en) * | 2018-12-30 | 2019-05-14 | 孙浩宁 | Soil sampling apptss |
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