CN102565308B - Soil erosion and slope varying test device for undisturbed soil, and forming method for soil erosion and slope varying test device - Google Patents
Soil erosion and slope varying test device for undisturbed soil, and forming method for soil erosion and slope varying test device Download PDFInfo
- Publication number
- CN102565308B CN102565308B CN201210041997.6A CN201210041997A CN102565308B CN 102565308 B CN102565308 B CN 102565308B CN 201210041997 A CN201210041997 A CN 201210041997A CN 102565308 B CN102565308 B CN 102565308B
- Authority
- CN
- China
- Prior art keywords
- plate
- guide
- soil
- plates
- adjacent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Revetment (AREA)
Abstract
The invention relates to a soil erosion and slope varying test device for undisturbed soil, and a forming method for the soil erosion and slope varying test device. The device is characterized by comprising a test groove and a test groove slop adjustment device; the test groove comprises two side walls, two end walls, a plurality of bottom cutting insertion plates and a guide frame; the two side walls comprise a plurality of side plates inserted into soil, and each of the two end walls is an end plate which is inserted into the soil; the two adjacent side plates, the two end plates and the two adjacent side plates are connected through connection pieces; all bottom cutting insertion plates are penetrated through the side plate of one side wall and then are vertically inserted into soil in the test groove, and then penetrated out of the corresponding side plate of the other side wall; the guide frame comprises side guide plates which are correspondingly arranged on the tops of the all the side plates, end guide plates which are correspondingly arranged at the ends of the two end plates, and horizontal connection plates connected with the two adjacent side guide plates between the two side walls; the two end guide plates are both connected with the side guide plates which are adjacent to the two end guide plates; and the test groove slope adjustment device comprises angle indication devices fixed on the side plates and jacks arranged at one end of the test groove.
Description
Technical field
The present invention relates to soil erosion test unit and forming method thereof, particularly become slope test unit and forming method thereof about a kind of undisturbed soil soil erosion.
Background technology
Soil erosion is one of important ecological environment problem of facing mankind, and soil erosion study must be based upon on a large amount of indoor and soil erosion field observation basis, field.The relation setting up the factors such as different gradient, length of grade and underlying surface and soil erosion amount is the important content of soil Erosion Research.At present, indoor soil erosion experimental study mainly the basis loading disturbed soil in slope test flume is carried out becoming, this method due to confined condition less, therefore, the impact of factors on the soil erosion can be completed; And the method is water and soil conservation have accumulated a large amount of basic datas; But the representativeness loading disturbed soil in the method is poor, it is the main cause of limit assay precision.The classic method of field soil erosion experiment sets up the runoff plots of different gradient, differ ent vegetation covering, and utilize natural rainfall to observe Slope Soil Erosion Process, this method is that soil erosion scientific research provides a large amount of full and accurate reliable data; But the method for this fixed point field inspection needs the runoff experimental plot setting up different gradient and length of grade, and the cycle of construction is long, and cost is high, therefore, limit the extensive application of this method.
Summary of the invention
For the problems referred to above, the object of this invention is to provide one and the conditions such as field test undisturbed soil structure and underlying surface can be kept constant, the construction period is short, and test accuracy is high, and the undisturbed soil soil erosion that cost is low becomes slope test unit and forming method thereof.
For achieving the above object, the present invention takes following technical scheme: a kind of undisturbed soil soil erosion becomes slope test unit, it is characterized in that: it comprises test flume and test flume slope conditioning; Described test flume comprises both walls, two headwalls, some bottoms cut-out plate and a guide frame; Described both walls includes some side plates be plugged in soil, and described two headwalls are the end plate be plugged in soil; Described in adjacent two between side plate, and end plate described in two and all being connected by web member between the described side plate be adjacent; Each described bottom cuts off plate and all penetrates from the described side plate side wall described in, the vertical soil body inserted in described test flume, and described side plate corresponding from side wall described in another passes; Described guide frame comprises the side guide plate that correspondence is arranged on each described side plate top, correspondence is arranged on the terminal guide plate at end plate top described in two, and one end connects side guide plate described in adjacent two in side wall described in, the other end connects the cross connecting plate of side guide plate described in corresponding adjacent two in side wall described in another; Terminal guide plate described in two is all connected with the described side guide plate be adjacent; Described test flume slope conditioning comprises the angle indicating device be fixed on described side plate, and is arranged on the lifting jack of described test flume one end.
A guide is provided with between the guide plate of side described in adjacent two; Described in adjacent two between side plate, described bottom cuts off the position that plate penetrates and is also provided with a guide; Described terminal guide plate is also provided with guide; Described guide comprises a square plate, and described square plate symmetria bilateralis is provided with two strip pilot holes, the described square plate above strip pilot hole described in two is symmetrically arranged with two U-shaped guide plates.
Described side guide plate and terminal guide plate are strip plate, described side guide plate and terminal guide plate are provided with to intert the strip hole of described side plate and end plate for correspondence.
Described side plate is square plate, its two ends are vertically arranged at intervals with some connecting holes respectively, described side plate lower, transverse is arranged at intervals with some pilot holes cutting off plate for interspersed described bottom, also be vertically arranged at intervals with some connecting holes between pilot hole described in adjacent two, described side plate bottom is arranged in blade-like.
The setting of described web member, guide, the connection of described side guide plate and described cross connecting plate, terminal guide plate, all realized by coupling bolt, the end of described coupling bolt is rectangular parallelepiped, described rectangular parallelepiped is provided with screw rod, and the described screw rod other end is provided with a nut; Described in described coupling bolt end, the width of rectangular parallelepiped equals the external diameter of described screw rod.
Above-mentioned a kind of undisturbed soil soil erosion becomes the formation method of slope test unit, it comprises the following steps: the size 1) requiring test flume according to field soil erosion test, select suitable side guide plate and the combination of terminal guide plate, and connect to form guide frame with cross connecting plate; 2) side plate and end plate are pressed into the degree of depth set in soil perpendicular to earth's surface through guide frame; 3) test flume surrounding is excavated along guide frame, utilize web member by adjacent side plates, and end plate is connected with adjacent side plates; 4) one by one bottom is cut off the side plate of plate through side and vertically insert the soil body, and passed by the side plate of another correspondence, complete the test flume soil body and be separated with the soil body of outside, form complete test flume; 5) remove guide frame, lifting lifting jack, and observation angle indicator, the gradient of test flume is increased to set angle, and test unit is provided with.
Described step 2) in, when plugging side plate and end plate, between adjacent two side guide plates, and terminal guide plate arranges guide, described step 4) complete after, remove guide.
Described step 4) in, plug bottom when cutting off plate, between adjacent two side plates, bottom cuts off the position that penetrates of plate and arranges guide, described step 4) complete after, remove guide.
The present invention is owing to taking above technical scheme, it has the following advantages: 1, the present invention is mainly in current soil erosion test, it is not strong that shop experiment groove loads native representativeness, the field soil erosion runoff observation subdistrict construction period is long, high cost problem, setting up one can keep the conditions such as field test undisturbed soil structure and underlying surface constant, test unit setting different gradient and forming method thereof easily.2, the present invention requires the size of test flume according to field soil erosion test, selects suitable side guide plate and the combination of terminal guide plate, connects to form guide frame with cross connecting plate; Side plate and end plate are pressed into through guide and guide frame the degree of depth set in soil perpendicular to earth's surface; Test flume surrounding is excavated along guide frame, utilizes side web member by each side plate and end plate connection; One by one bottom is cut off that the pilot hole of plate on side plate is vertical with guide inserts the soil body with side plate, and passed by the pilot hole on another corresponding side plate, complete the test flume soil body and be separated with the soil body of outside, form complete test flume; Remove guide frame; Lifting lifting jack, and observation angle indicator, be increased to set angle by the gradient of test flume, and it is representative strong that test flume prepared by the method has underlying surface, can set the advantage of the experimental factor such as the gradient and length of grade easily.3, the undisturbed soil soil erosion of the present invention becomes slope test flume, and do not change soil texture and test land surface condition, test is representative strong; Prepared by the test flume that test method and relevant apparatus can complete all size and the gradient rapidly; Improve precision and the efficiency of field soil erosion test.Test unit structure of the present invention is simple, cheap, convenient and practical, reliable operation; The formation method of test unit of the present invention can complete the quick preparation of field undisturbed soil test flume, and the test of different length of grade and the gradient can be realized easily, therefore, the fast development of soil erosion scientific research can be adapted to and meet the requirement shortening the soil erosion study test period, can be widely used in the scientific research process of soil erosion.
Accompanying drawing explanation
Fig. 1 is apparatus of the present invention structural representations
Fig. 2 is lateral plate structure schematic diagram of the present invention
Fig. 3 is guide member arrangement schematic diagram of the present invention
Fig. 4 is coupling bolt structural representation of the present invention
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in detail.
As shown in Figure 1, test unit of the present invention comprises test flume 10 and test flume slope conditioning 20.
Test flume 10 of the present invention is square body, and it comprises the both walls 101 be parallel to each other, two headwalls 102 be parallel to each other, some bottoms cut-out plate 103 and a guide frame 104.Both walls 101 includes some side plate 105, two headwalls 102 be plugged in soil and is one and is plugged in end plate 106 in soil; Connected by side web member 107 between adjacent two side plates 105, connected by angle connector 108 between the side plate 105 that end plate 106 is adjacent; Each bottom cuts off plate 103 and all penetrates from the side plate 105 side wall 101, the vertical soil body inserted in test flume 10, and side plate 105 corresponding from another side wall 101 passes.Guide frame 104 comprises some sides guide plate 109, two terminal guide plates 110 and some cross connecting plates 111; Some sides guide plate 109 is the corresponding top being arranged on each side plate 105 respectively, and two terminal guide plate 110 correspondences are arranged on the top of two end plates 106, and both ends guide plate 110 is all connected with the side guide plate 109 be adjacent; Each cross connecting plate 111 is all across between both walls 101, and one end of cross connecting plate 111 connects adjacent two the side guide plates 109 in a wherein side wall 101, and the other end connects adjacent two side guide plates 109 corresponding in another side wall 101.
Test flume slope conditioning 20 of the present invention comprises the angle indicating device 201 be fixed on side plate 105, and is arranged on the lifting jack 202 of test flume 10 one end.
In above-described embodiment, between adjacent two side guide plates 109, be provided with a guide 112; Between adjacent two side plates 105, bottom cuts off the position that penetrates of plate 103 and is also provided with a guide 112; Terminal guide plate 110 is also provided with guide (not shown).Guide 112 is only used when needs lead, namely when guide frame 104 completes and inserts side plate 105 with end plate 106, when side wall 101 sets up rear insertion bottom cut-out plate 103, once after these inserts complete, guide 112 is removed, test flume 10 corresponding web member (side web member 107, side guide plate 109, terminal guide plate 110 and cross connecting plate 111) is connected and fixed.
In above-described embodiment, side guide plate 109 and terminal guide plate 110 are strip plate, and on side guide plate 109 and terminal guide plate 110, equal correspondence is provided with the strip hole for interspersed side plate 105 and end plate 106.
In above-described embodiment, as shown in Figure 2, side plate 105 is square plate, its two ends are vertically arranged at intervals with some connecting holes 113 respectively, side plate 105 lower, transverse is arranged at intervals with some pilot holes 114 cutting off plate 103 for interspersed bottom, is vertically arranged at intervals with some connecting holes 113 between adjacent two pilot holes 114.Side plate bottom is arranged in blade-like 115.
In above-described embodiment, as shown in Figure 3, guide 112 comprises a square plate 116, and square plate 116 symmetria bilateralis is provided with two strip pilot holes, the square plate 116 above two strip pilot holes is symmetrically arranged with two U-shaped guide plates 117.
In above-described embodiment, as Figure 1 and Figure 4, the connection of side plate 105 and side web member 107, the connection of guide 112 and side plate 105, side guide plate 109, the connection of side plate 105, end plate 106 and angle connector 108, the connection of side guide plate 109 and cross connecting plate 111, the connection of side guide plate 109 and terminal guide plate 110 is all realized by coupling bolt 118, the end of this coupling bolt 118 is rectangular parallelepiped 119, rectangular parallelepiped 119 is provided with screw rod 120, screw rod 120 other end is provided with a nut 121.The width of this coupling bolt 118 end rectangular parallelepiped 119 is equal with the external diameter of screw rod 120, and is slightly less than the lateral dimension of the connecting hole on side plate 105, end plate 106, side guide plate 109 and terminal guide plate 110.Coupling bolt 118 is inserted connecting hole, and side plate 105 can be connected with side web member 107 by (121, nut plays connection function, all can by coupling bolt 118 90-degree rotation by hand or any suitable tools) by coupling bolt 118 90-degree rotation; Guide 112 is connected with side plate 105, side guide plate 109; Side plate 105, end plate 106 and angle connector 108; Side guide plate 109 is connected with cross connecting plate 111; Side guide plate 109 is connected with terminal guide plate 110.
The formation method of test unit of the present invention comprises the following steps:
1) according to field soil erosion test requirement, build guide frame 104: two row side guide plates 109 and two terminal guide plates 110 are set, wherein in a line side guide plate 109, adjacent two side guide plates 109 connect one end of same cross connecting plate 111, and the other end of this cross connecting plate 111 connects adjacent two side guide plates 109 of the correspondence in another row side guide plate 109; Both ends guide plate 110 is all connected with the side guide plate 109 be adjacent.
2) both walls 101 and two headwalls 102 of test flume 10 are set: be arranged on by guide 112 between adjacent two side guide plates 109, terminal guide plate 110 also arranges guide 112; Side plate 105 and end plate 106 are pressed into through guide frame 104 and guide the degree of depth set in soil perpendicular to earth's surface.
3) test flume 10 surrounding excavated along guide frame 104, connect adjacent biside plate 105 by side web member 107, being connected by each side plate 105 is an entirety; By the side plate 105 that angle connector 108 connects end plate 106 and is adjacent, being connected with side plate 105 by end plate 106 is an entirety.
4) soil body in test flume 10 is separated with the soil body of outside: guide 112 is arranged between adjacent two side plates 105, bottom cuts off the position that plate 103 penetrates; One by one bottom is cut off the pilot hole 114 of plate 103 on side plate 105 and guide 112 inserts the soil body perpendicular to side plate 105, and passed by the pilot hole 114 on another corresponding side plate 105.So far, the undisturbed soil original position preparation process of test flume 10 completes.
5) whole guide frame 104 and guide 112 are removed.
6) coupling bolt 118 is utilized by angle indicating device 201 to be fixed on side plate 105; Some lifting jack 202 are connected to one end of test flume 10; Lifting lifting jack 202, and observation angle indicator 201, be adjusted to the setting gradient by the gradient of test flume 10.So far, undisturbed soil soil erosion change slope test unit has been assembled.
The formation method of test unit of the present invention may be summarized to be: the size requiring test flume 10 according to field soil erosion test, selects suitable side guide plate 109 and the combination of terminal guide plate 110, connects to form guide frame 104 with cross connecting plate 111.Side plate 105 and end plate 106 are pressed into through guide 112 and guide frame 104 degree of depth set in soil perpendicular to earth's surface.Test flume 10 surrounding is excavated along guide frame 104, utilizes side web member 107 each side plate 105 and end plate 106 to be connected with angle connector 108.One by one bottom is cut off the pilot hole 114 of plate 103 on side plate 105 and insert the soil body with guide 112 perpendicular to side plate 105, and passed by the pilot hole 114 on another corresponding side plate 105, complete the test flume soil body to be separated with the soil body of outside, form complete test flume 10.Remove guide frame 104 and guide 112.Lifting lifting jack 202, and observation angle indicator 201, be increased to set angle by the gradient of test flume 10.
The various embodiments described above are only for illustration of the present invention, and wherein the structure, connected mode etc. of each parts all can change to some extent, and every equivalents of carrying out on the basis of technical solution of the present invention and improvement, all should not get rid of outside protection scope of the present invention.
Claims (7)
1. the undisturbed soil soil erosion becomes a formation method for slope test unit, and wherein this test unit comprises test flume and test flume slope conditioning; Test flume comprises both walls, two headwalls, some bottoms cut-out plate and a guide frame; Both walls includes some side plates, and two headwalls are an end plate; Between adjacent biside plate, and all connected by web member between two end plates and the side plate be adjacent; Each bottom cuts off plate and all penetrates from the side plate a side wall, and side plate corresponding from another side wall passes; Guide frame comprises the side guide plate that correspondence is arranged on each side plate top, correspondence is arranged on the terminal guide plate at two end plates top, and one end connects adjacent both sides guide plate in a side wall, the other end connects the cross connecting plate of adjacent both sides guide plate corresponding in another side wall; Both ends guide plate is all connected with the side guide plate be adjacent; Test flume slope conditioning comprises the angle indicating device be fixed on side plate, and is arranged on the lifting jack of test flume one end, and the formation method of this test unit comprises the following steps:
1) require the size of test flume according to field soil erosion test, select suitable side guide plate and the combination of terminal guide plate, and connect to form guide frame with cross connecting plate;
2) side plate and end plate are pressed into the degree of depth set in soil perpendicular to earth's surface through guide frame;
3) test flume surrounding is excavated along guide frame, utilize web member by adjacent side plates, and end plate is connected with adjacent side plates;
4) one by one bottom is cut off the side plate of plate through side and vertically insert the soil body, and passed by the side plate of another correspondence, complete the test flume soil body and be separated with the soil body of outside, form complete test flume;
5) remove guide frame, lifting lifting jack, and observation angle indicator, the gradient of test flume is increased to set angle, and test unit is provided with.
2. a kind of undisturbed soil soil erosion as claimed in claim 1 become slope test unit formation method, it is characterized in that: between the guide plate of adjacent both sides, be provided with a guide; Between adjacent biside plate, bottom cuts off the position that penetrates of plate and is also provided with a guide; Terminal guide plate is also provided with guide; Guide comprises a square plate, and square plate symmetria bilateralis is provided with two strip pilot holes, the square plate above two strip pilot holes is symmetrically arranged with two U-shaped guide plates.
3. a kind of undisturbed soil soil erosion as claimed in claim 2 becomes the formation method of slope test unit, it is characterized in that: described step 2) in, when plugging side plate and end plate, between adjacent two side guide plates, and terminal guide plate arranges guide, described step 4) complete after, remove guide.
4. a kind of undisturbed soil soil erosion as claimed in claim 2 becomes the formation method of slope test unit, it is characterized in that: described step 4) in, when plugging bottom cut-out plate, between adjacent two side plates, bottom cuts off the position that penetrates of plate and arranges guide, described step 4) complete after, remove guide.
5. a kind of undisturbed soil soil erosion as claimed in claim 1 becomes the formation method of slope test unit, it is characterized in that: side guide plate and terminal guide plate are strip plate, side guide plate and terminal guide plate are provided with and intert the strip hole of side plate and end plate for correspondence.
6. a kind of undisturbed soil soil erosion as claimed in claim 1 becomes the formation method of slope test unit, it is characterized in that: side plate is square plate, its two ends are vertically arranged at intervals with some connecting holes respectively, side plate lower, transverse is arranged at intervals with some pilot holes cutting off plate for interspersed bottom, also be vertically arranged at intervals with some connecting holes between adjacent two pilot holes, side plate bottom is arranged in blade-like.
7. a kind of undisturbed soil soil erosion as claimed in claim 2 becomes the formation method of slope test unit, it is characterized in that: the setting of web member, guide, the connection of side guide plate and cross connecting plate, terminal guide plate, all realized by coupling bolt, the end of coupling bolt is rectangular parallelepiped, rectangular parallelepiped is provided with screw rod, and the screw rod other end is provided with a nut; The width of coupling bolt end rectangular parallelepiped equals the external diameter of screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210041997.6A CN102565308B (en) | 2012-02-22 | 2012-02-22 | Soil erosion and slope varying test device for undisturbed soil, and forming method for soil erosion and slope varying test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210041997.6A CN102565308B (en) | 2012-02-22 | 2012-02-22 | Soil erosion and slope varying test device for undisturbed soil, and forming method for soil erosion and slope varying test device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102565308A CN102565308A (en) | 2012-07-11 |
| CN102565308B true CN102565308B (en) | 2015-02-04 |
Family
ID=46411266
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210041997.6A Expired - Fee Related CN102565308B (en) | 2012-02-22 | 2012-02-22 | Soil erosion and slope varying test device for undisturbed soil, and forming method for soil erosion and slope varying test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102565308B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245772B (en) * | 2013-05-13 | 2015-03-25 | 湖南大学 | Indoor analog experiment device for roadbed slope erosion |
| CN103293285A (en) * | 2013-06-01 | 2013-09-11 | 西北农林科技大学 | Method for determining soil erosion on drainage basin or regional scale |
| CN104316672B (en) * | 2014-10-22 | 2016-09-14 | 西安理工大学 | Variable-width slope soil erosion model equipment based on self adaptation horizontal walkways |
| CN107255702B (en) * | 2017-07-18 | 2020-02-04 | 长安大学 | Portable surface runoff simulation measuring device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3902202B2 (en) * | 2004-10-04 | 2007-04-04 | 独立行政法人農業・食品産業技術総合研究機構 | Undisturbed large soil core collection device |
| CN100588594C (en) * | 2008-04-14 | 2010-02-10 | 河北省农林科学院旱作农业研究所 | Keep the plot moving apparatus of soil construction and carry out the method for plot migration with it |
| CN201310302Y (en) * | 2008-12-19 | 2009-09-16 | 中国科学院沈阳应用生态研究所 | Undisturbed soil column collecting combination unit |
| CN201432842Y (en) * | 2009-04-10 | 2010-03-31 | 张龙明 | Non-drainage undisturbed soil transfer device |
| CN101531262B (en) * | 2009-04-11 | 2010-11-10 | 马洪彬 | Plot movement device for maintaining undisturbed soil free from loss, and method for plot movement using device |
| CN201673069U (en) * | 2010-05-04 | 2010-12-15 | 张龙云 | Batch-type soil sampler |
-
2012
- 2012-02-22 CN CN201210041997.6A patent/CN102565308B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN102565308A (en) | 2012-07-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103954740B (en) | A kind of expansive soil slope hygroscopic deformation model test method and system | |
| CN102565308B (en) | Soil erosion and slope varying test device for undisturbed soil, and forming method for soil erosion and slope varying test device | |
| CN102749276B (en) | Device and method for determining permeation coefficient of unsaturated soil | |
| CN113720880B (en) | Resistivity monitoring system and method for underground three-dimensional migration process of pollutants | |
| CN104264719A (en) | Vacuum preloading indoor model testing apparatus | |
| CN204461325U (en) | A kind of cover degree for herbaceous plant sample ground measures equipment | |
| CN202304715U (en) | Caliper for measuring embedded depth of electric pole | |
| CN103234826B (en) | Schist anisotropic elasticity modulus measurements method | |
| CN208636073U (en) | A kind of soil sample collector | |
| CN105133563B (en) | A kind of home position testing method and device of quick measure deep soil shearing strength | |
| CN105116111A (en) | Device and method for measuring influences of rainfall capacity and matrix suction on side slope | |
| CN106932554A (en) | A kind of soil body is disintegrated critical moisture content method of testing and disintegration tester | |
| CN202470968U (en) | Surface soil erosion thickness measuring instrument | |
| CN203203823U (en) | Forest soil sampling shovel capable of regulating sampling thickness | |
| CN102913238A (en) | Method for dissolving initial oil saturation degree of oil-water layer | |
| CN105021104A (en) | Self-priming step trough measurement tool | |
| CN107271343B (en) | Multi-scale rock fracture permeability size effect test method | |
| CN201141754Y (en) | Vernier caliper type angle gauge dendrometer | |
| CN204241294U (en) | One can location model chamber | |
| CN203824997U (en) | Portable runoff plot | |
| CN203489825U (en) | Measuring scale special for measuring burial depth of electric pole | |
| CN203083498U (en) | Rapid electric pole burial depth measuring ruler | |
| CN203274843U (en) | Water level indicator | |
| CN203191341U (en) | Soil humidity detector | |
| CN206339406U (en) | A kind of dredger for being easy to take mud |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150204 Termination date: 20160222 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |