CN105486629A - Pressure-controllable root soil drawing experimental device - Google Patents
Pressure-controllable root soil drawing experimental device Download PDFInfo
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- CN105486629A CN105486629A CN201511004614.8A CN201511004614A CN105486629A CN 105486629 A CN105486629 A CN 105486629A CN 201511004614 A CN201511004614 A CN 201511004614A CN 105486629 A CN105486629 A CN 105486629A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Sampling And Sample Adjustment (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention relates to a pressure-controllable root soil drawing experimental device which comprises a base plate with a straight slot, wherein a base is fixed on the bottom surface of the base plate; a hollow fixing pipe is fixedly arranged on the top surface of the base plate at the straight slot along the direction of the straight slot; fixing pipe slots are respectively arranged at the top end and bottom end of the fixing pipe along the length direction; a hollow soil sample pipe is sleeved in the inner chamber of the fixing pipe in a sliding manner; two through holes are symmetrically formed in the pipe wall of the soil sample pipe; a lateral plate is vertically arranged on the top surface of the base plate on the outer side of the opening of the fixing pipe; a screw rod is horizontally arranged on the lateral plates in a rotating form; an extruding block is arranged at one end of the screw rod, close to the fixing pipe; the extruding block is arranged in the inner chamber of the fixing pipe in the sliding manner; a mechanical sensor is arranged on the top surface of the base plate between the fixing pipe and the lateral plate; the mechanical sensor is connected with the extruding block. The pressure-controllable root soil drawing experimental device can be used for effectively simulating the interaction of plant root soil interface; the soil sample pipe and the fixing pipe are separated from each other; the soil sample with specific dry density and moisture content can be prepared in advance before the drawing experiment, and then batch experiment can be performed, so that the efficiency of experiment is promoted.
Description
Technical field:
The present invention relates to a kind of root soil drawing experimental provision, particularly relate to a kind of root soil drawing experimental provision of controllable pressure.
Background technology:
According to investigations, current China soil erosion area 356.92 ten thousand sq-km, wherein water erosion area 161.22 ten thousand sq-km, wind erosion area 195.70 ten thousand sq-km.Soil erosion causes a large amount of land deteriorations, causes the deterioration of the ecological environment.People control soil erosion and mainly take the safeguard of biological control measure, engineering measure, tillage control measure and laws and regulations.In biological control measure, root system of plant plays very important effect.It is generally acknowledged, soil is the material of allowable stress, but bear the poor ability of pulling force and shearing, and the root system in soil can bear certain pulling force, the thick root of plant can penetrate deep soil and play anchorage effect as reinforcing bar, radicula then forms root system net and plays reinforced action, and the anchoring of root system and reinforced action improve tension and the shear resistance of the soil body greatly.Therefore, plant solid soil is against corrosion is mainly realized by root system.When radical operators is subject to shearing force there is the changing of the relative positions in root soil, and root system, by the rubbing action of Root-soil interface, transforms into the shear stress in soil the tension of root, thus enhances the shearing strength of radical operators, and then is provided with solid native ability of fixing the sand.Root system and soil body interface action property decide the internal stability of radical operators, and researching plant root and soil body interface action property study root system solid soil mechanism key.
At present, the research for the plant roots in soils interfacial interaction is tested mainly through direct shearing test and single drawing.Direct shearing test can control inerface load, but root system tension progressive formation can not be simulated on the impact of frictional resistance, and complex operation step, consuming time longer: existing drawing experiment can not control soil sample load, and the mode of single-side pressurization can make the root in soil sample become curved, affects experimental result.
Summary of the invention:
The object of the present invention is to provide a kind of root soil drawing experimental provision of controllable pressure.
The present invention is implemented by following technical scheme: a kind of root soil drawing experimental provision of controllable pressure, it comprises the base plate being provided with groove, the bottom surface of described base plate is fixed with base, the described plate top surface at described groove place is fixed with along groove direction the stationary pipes of hollow, and the top of described stationary pipes and bottom are respectively equipped with two fixing tube seats along its length; The soil sample pipe of hollow is housed at the inner chamber slip cap of described stationary pipes, the tube wall of described soil sample pipe is arranged with two through holes; Described plate top surface outside the described stationary pipes mouth of pipe is vertically provided with one block of side plate respectively; Described side plate horizontally rotates and is provided with screw mandrel, be provided with crushing block at described screw mandrel near one end of described stationary pipes; Described crushing block slides and is placed in described soil sample tube cavity; Described plate top surface between described stationary pipes and described side plate is provided with mechanics sensor, and described mechanics sensor is connected with described crushing block.
Further, described side plate is provided with nut, and described screw rod bushing is located in described nut.
Further, the outer wall of described crushing block is provided with connector, one end of described screw mandrel is rotated and is fixed in described connector, and the other end of described screw mandrel is fixed with screw handle.
Further, described soil sample pipe is square tube or pipe.
Further, described stationary pipes is square tube or pipe.
During experiment, described base is fixed on the lower clamp of universal testing machine, puts into described stationary pipes by being filled with soil sample and being inserted with the described soil sample pipe of testing root sample; The two ends of described experiment root sample are stretched out from two described through holes respectively, and one end of described experiment root sample reaches outside the described fixing tube seat on described stationary pipes top, and is held on the upper fixture of described universal testing machine; The two ends of described soil sample pipe are sealed by described crushing block, rotate described screw mandrel and make described soil sample reach preload pressure, can carry out drawing experiment to described experiment root sample.
Advantage of the present invention:
1, the present invention carries out level by the crushing block at soil sample pipe two ends to soil sample and exerts pressure, exert pressure is monitored in real time by mechanics sensor, test root sample when can ensure plus load not to be bent, control universal testing machine simultaneously and carry out root soil drawing experiment, effective simulating plant Root-soil interface interacts.
2, soil sample pipe of the present invention and stationary pipes are separated from each other, can before drawing experiment the soil sample of previously prepared a certain amount of specific dry density and water percentage, and then batch experiment, has saved experimental period, has improve conventional efficient.
Accompanying drawing illustrates:
Fig. 1 is the root soil drawing experimental provision vertical view of embodiment 1 one kinds of controllable pressures;
Fig. 2 is the root soil drawing experimental provision front view of embodiment 1 one kinds of controllable pressures;
Fig. 3 is the A-A view of Fig. 2;
Fig. 4 is that the root soil drawing experimental provision of embodiment 1 one kinds of controllable pressures uses schematic diagram;
Fig. 5 is the root soil drawing experimental provision using state partial sectional view of embodiment 1 one kinds of controllable pressures;
Fig. 6 is the root soil drawing experimental provision schematic diagram of embodiment 2 one kinds of controllable pressures;
Fig. 7 is the root soil drawing experimental provision schematic diagram of embodiment 3 one kinds of controllable pressures;
Fig. 8 is the root soil drawing experimental provision schematic diagram of embodiment 4 one kinds of controllable pressures.
In figure: base plate 1, base 2, fixing square tube 3, groove 4, soil sample square tube 5, through hole 6, side plate 7, nut 8, screw mandrel 9, crushing block 10, connector 11, screw handle 12, mechanics sensor 13, lower clamp 14, soil sample 15, experiment root sample 16, upper fixture 17, fixing pipe 18, soil sample pipe 19.
Embodiment:
embodiment 1:
A kind of root soil drawing experimental provision of controllable pressure, it comprises the base plate 1 being provided with groove 20, the bottom surface of base plate 1 is fixed with base 2, base plate 1 end face at groove 20 place is fixed with along groove 20 direction the fixing square tube 3 of hollow, and top and the bottom of fixing square tube 3 are respectively equipped with two fixing tube seats 4 along its length; The soil sample square tube 5 of hollow is housed at the inner chamber slip cap of fixing square tube 3, the tube wall of soil sample square tube 5 is arranged with two through holes 6; Base plate 1 end face outside fixing square tube 5 mouth of pipe is vertically provided with one block of side plate 7 respectively; Side plate 7 is provided with nut 8, and in nut 8, turning set is provided with screw mandrel 9, is provided with crushing block 10 at screw mandrel 9 near one end of fixing square tube 3; Crushing block 10 slides and is placed in the inner chamber of soil sample square tube 5, and the outer wall of crushing block 10 is provided with connector 11, and one end of screw mandrel 9 is rotated and is fixed in connector 11, and the other end of screw mandrel 9 is fixed with screw handle 12; Base plate 1 end face between fixing square tube 3 and side plate 7 is provided with mechanics sensor 13, and mechanics sensor 13 is connected with crushing block 10.
During experiment, base 2 is fixed on the lower clamp 14 of universal testing machine, puts into fixing square tube 3 by being filled with soil sample 15 and being inserted with the soil sample square tube 5 of testing root sample 16; The two ends of experiment root sample 16 are stretched out from two through holes 6 respectively, and one end of experiment root sample 16 reaches outside the fixing tube seat 4 on fixing square tube 3 top, and is held on the upper fixture 17 of universal testing machine; The two ends of soil sample square tube 5 are sealed by crushing block 10, and rotary screw rod 9 makes soil sample 15 reach preload pressure, can carry out drawing experiment to experiment root sample 16.
embodiment 2: a kind of root soil drawing experimental provision of controllable pressure, it comprises the base plate 1 being provided with groove 20, the bottom surface of base plate 1 is fixed with base 2, base plate 1 end face at groove 20 place is fixed with along groove 20 direction the fixing pipe 18 of hollow, and top and the bottom of fixing pipe 18 are respectively equipped with two fixing tube seats 4 along its length; The soil sample square tube 5 of hollow is housed at the inner chamber slip cap of fixing pipe 18, the tube wall of soil sample square tube 5 is arranged with two through holes 6; Base plate 1 end face outside fixing square tube 5 mouth of pipe is vertically provided with one block of side plate 7 respectively; Side plate 7 is provided with nut 8, and in nut 8, turning set is provided with screw mandrel 9, is provided with crushing block 10 at screw mandrel 9 near one end of fixing pipe 18; Crushing block 10 slides and is placed in the inner chamber of soil sample square tube 5, and the outer wall of crushing block 10 is provided with connector 11, and one end of screw mandrel 9 is rotated and is fixed in connector 11, and the other end of screw mandrel 9 is fixed with screw handle 12; Base plate 1 end face between fixing pipe 18 and side plate 7 is provided with mechanics sensor 13, and mechanics sensor 13 is connected with crushing block 10.
embodiment 3: a kind of root soil drawing experimental provision of controllable pressure, it comprises the base plate 1 being provided with groove 20, the bottom surface of base plate 1 is fixed with base 2, base plate 1 end face at groove 20 place is fixed with along groove 20 direction the fixing square tube 3 of hollow, and top and the bottom of fixing square tube 3 are respectively equipped with two fixing tube seats 4 along its length; The soil sample pipe 19 of hollow is housed at the inner chamber slip cap of fixing square tube 3, the tube wall of soil sample pipe 19 is arranged with two through holes 6; Base plate 1 end face outside fixing square tube 5 mouth of pipe is vertically provided with one block of side plate 7 respectively; Side plate 7 is provided with nut 8, and in nut 8, turning set is provided with screw mandrel 9, is provided with crushing block 10 at screw mandrel 9 near one end of fixing square tube 3; Crushing block 10 slides and is placed in the inner chamber of soil sample pipe 19, and the outer wall of crushing block 10 is provided with connector 11, and one end of screw mandrel 9 is rotated and is fixed in connector 11, and the other end of screw mandrel 9 is fixed with screw handle 12; Base plate 1 end face between fixing square tube 3 and side plate 7 is provided with mechanics sensor 13, and mechanics sensor 13 is connected with crushing block 10.
embodiment 4: a kind of root soil drawing experimental provision of controllable pressure, it comprises the base plate 1 being provided with groove 20, the bottom surface of base plate 1 is fixed with base 2, base plate 1 end face at groove 20 place is fixed with along groove 20 direction the fixing pipe 18 of hollow, and top and the bottom of fixing pipe 18 are respectively equipped with two fixing tube seats 4 along its length; The soil sample pipe 19 of hollow is housed at the inner chamber slip cap of fixing pipe 18, the tube wall of soil sample pipe 19 is arranged with two through holes 6; Base plate 1 end face outside fixing square tube 5 mouth of pipe is vertically provided with one block of side plate 7 respectively; Side plate 7 is provided with nut 8, and in nut 8, turning set is provided with screw mandrel 9, is provided with crushing block 10 at screw mandrel 9 near one end of fixing pipe 18; Crushing block 10 slides and is placed in the inner chamber of soil sample pipe 19, and the outer wall of crushing block 10 is provided with connector 11, and one end of screw mandrel 9 is rotated and is fixed in connector 11, and the other end of screw mandrel 9 is fixed with screw handle 12; Base plate 1 end face between fixing pipe 18 and side plate 7 is provided with mechanics sensor 13, and mechanics sensor 13 is connected with crushing block 10.
Claims (5)
1. the root soil drawing experimental provision of a controllable pressure, it is characterized in that, it comprises the base plate being provided with groove, the bottom surface of described base plate is fixed with base, the described plate top surface at described groove place is fixed with along groove direction the stationary pipes of hollow, and the top of described stationary pipes and bottom are respectively equipped with two fixing tube seats along its length; The soil sample pipe of hollow is housed at the inner chamber slip cap of described stationary pipes, the tube wall of described soil sample pipe is arranged with two through holes; Described plate top surface outside the described stationary pipes mouth of pipe is vertically provided with one block of side plate respectively; Described side plate horizontally rotates and is provided with screw mandrel, be provided with crushing block at described screw mandrel near one end of described stationary pipes; Described crushing block slides and is placed in described soil sample tube cavity; Described plate top surface between described stationary pipes and described side plate is provided with mechanics sensor, and described mechanics sensor is connected with described crushing block.
2. the root soil drawing experimental provision of a kind of controllable pressure according to claim 1, it is characterized in that, described side plate is provided with nut, and described screw rod bushing is located in described nut.
3. the root soil drawing experimental provision of a kind of controllable pressure according to claim 1, it is characterized in that, the outer wall of described crushing block is provided with connector, and one end of described screw mandrel is rotated and is fixed in described connector, and the other end of described screw mandrel is fixed with screw handle.
4. the root soil drawing experimental provision of a kind of controllable pressure according to claim 1, it is characterized in that, described soil sample pipe is square tube or pipe.
5. the root soil drawing experimental provision of a kind of controllable pressure according to claim 1, it is characterized in that, described stationary pipes is square tube or pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511004614.8A CN105486629B (en) | 2015-12-30 | 2015-12-30 | A kind of root soil drawing experimental provision of controllable pressure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201511004614.8A CN105486629B (en) | 2015-12-30 | 2015-12-30 | A kind of root soil drawing experimental provision of controllable pressure |
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| Publication Number | Publication Date |
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| CN105486629A true CN105486629A (en) | 2016-04-13 |
| CN105486629B CN105486629B (en) | 2018-12-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110160954A (en) * | 2019-06-12 | 2019-08-23 | 辽宁科技大学 | A kind of single device and method with soil frictional force of measurement plant |
Citations (4)
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| CN101629896A (en) * | 2009-03-12 | 2010-01-20 | 北京林业大学 | Method for researching friction anchoring property between forest root system and soil and device therefor |
| CN202471566U (en) * | 2012-01-12 | 2012-10-03 | 胡忠志 | Concatenated experimental device for in-situ clustered root drawing experiment in root system of tree |
| CN203720061U (en) * | 2014-01-22 | 2014-07-16 | 北京林业大学 | Experiment device for testing mechanical characteristics of root system |
| CN205374264U (en) * | 2015-12-30 | 2016-07-06 | 内蒙古农业大学 | Experimental apparatus is drawn to seat earth of controllable pressure |
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2015
- 2015-12-30 CN CN201511004614.8A patent/CN105486629B/en active Active
Patent Citations (4)
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|---|---|---|---|---|
| CN101629896A (en) * | 2009-03-12 | 2010-01-20 | 北京林业大学 | Method for researching friction anchoring property between forest root system and soil and device therefor |
| CN202471566U (en) * | 2012-01-12 | 2012-10-03 | 胡忠志 | Concatenated experimental device for in-situ clustered root drawing experiment in root system of tree |
| CN203720061U (en) * | 2014-01-22 | 2014-07-16 | 北京林业大学 | Experiment device for testing mechanical characteristics of root system |
| CN205374264U (en) * | 2015-12-30 | 2016-07-06 | 内蒙古农业大学 | Experimental apparatus is drawn to seat earth of controllable pressure |
Non-Patent Citations (3)
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| 刘福全等: ""植物枝叶与根系耦合固土抗蚀的差异性"", 《应用生态学报》 * |
| 张兴玲等: ""青藏高原东北部黄土区护坡灌木柠条锦鸡儿根系拉拔摩擦试验研究"", 《岩石力学与工程学报》 * |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110160954A (en) * | 2019-06-12 | 2019-08-23 | 辽宁科技大学 | A kind of single device and method with soil frictional force of measurement plant |
| CN110160954B (en) * | 2019-06-12 | 2024-02-27 | 辽宁科技大学 | Device and method for measuring friction force between plant single element and soil |
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| Publication number | Publication date |
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| CN105486629B (en) | 2018-12-11 |
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