CN104360164A - Device and method for testing impedance of soil mass under different temperature paths - Google Patents
Device and method for testing impedance of soil mass under different temperature paths Download PDFInfo
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- CN104360164A CN104360164A CN201410763170.5A CN201410763170A CN104360164A CN 104360164 A CN104360164 A CN 104360164A CN 201410763170 A CN201410763170 A CN 201410763170A CN 104360164 A CN104360164 A CN 104360164A
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Abstract
The invention discloses a device and a method for testing impedance of soil mass under different temperature paths. The device comprises an internal sample supporting table and a sealed thermal insulation container with a vacuum wiring access and a vacuum pump connector on top, wherein an upper wood board, an upper temperature control box, an upper copper plate, a sample block, a lower copper plate, a lower temperature control box and a lower wood board are arranged on the supporting table from top to bottom in sequence. During a test, the device and the method are used for regulating the temperatures of the upper and the lower temperature control boxes, and can be used for recording a curve, which changes with time, of the impedance in a temperature conduction process as well as a curve, which changes with the time, of the temperature by virtue of an electrochemical workstation and a temperature measuring system. The device disclosed by the invention is scientific in design, simple in structure, simple to operate, strong in practicability and capable of measuring the impedance of the soil mass under different temperature paths by stimulating a plurality of temperature environments.
Description
Background technology
The present invention relates to soil impedance technical field of measurement and test, specifically under a kind of different temperatures path, test device and the method for testing of soil body impedance.
Background technology
The soil body is a kind of heterogeneous heterogeneous system by solid, liquid, gas composition, and its character is quite complicated.Impedance is in the circuit with resistance, inductance and electric capacity, for the structures and characteristics of analysis system.The impedance of the soil body is except reflecting the basic physical mechanics properties of the soil body well, as water cut, void ratio, saturation degree, compactness, the salt content of the soil body, the structure and properties feature between inside soil body solid phase-liquid-gas phase three can also be reflected, as matric suction, volumetric(al) moisture content, solid-liquid interface electric capacity, resistance etc.
At present, the research for soil body impedance does not relate to the test under temperature paths, under major part research is only limited to a certain fixed temperature, does not really consider the situation of change of temperature transmittance process middle impedance.Along with the increasing of underground works scale, soil structures and character by the impact of location and local natural environmental condition, as climate change, change of seasons situation, the situation of change of temperature during day alternates with night, ground temperature situation of change.Soil structures and change of properties is caused to characterize by the impedance of the test soil body by temperature variation.
Summary of the invention
The object of the invention is device and the method for testing in order to test soil body impedance under providing a kind of different temperatures path.The present invention utilizes electrochemical workstation accurately to record the change of soil body impedance under different temperatures path, reflects the structures and characteristics feature with the research soil body, for engineering design by impedance circuit parameter.
The present invention is achieved through the following technical solutions:
Test a device for soil body impedance under different temperatures path, comprise in rectangular-shaped sealed thermal insulating container, the lid of sealed thermal insulating container offers vacuum connection jaws and vacuum pump interface; (sample cushion cap can prevent sample from directly directly contacting with sealed thermal insulating container base plate in sealed thermal insulating container to be fixed with sample cushion cap, there is heat transfer, dissipated heat), sample cushion cap is mounted with lower plank, lower plank is mounted with lower temperature-controlled cabinet, lower temperature-controlled cabinet is mounted with lower copper coin, lower copper coin is mounted with coupon, coupon is mounted with copper coin, upper copper coin is mounted with temperature-controlled cabinet, upper temperature-controlled cabinet is mounted with plank; Wherein, upper and lower plank is all provided with fishbolt, and upper plank, upper temperature-controlled cabinet, upper copper coin, coupon, lower copper coin, lower temperature-controlled cabinet and lower plank close contact under the effect of fishbolt; Upper and lower copper coin as testing impedance electrode, and is all provided with thermistor in the center of upper and lower copper coin inwall, and upper and lower copper coin and thermistor are all connected with wire and wire passes from vacuum connection jaws; Four sides of coupon are provided with a circle thermal insulation material, prevent its dissipated heat; The both sides of upper and lower temperature-controlled cabinet are all provided with venting channels, and reach temperature controlled object by venting channels input hot and cold air, the temperature environment that upper and lower two temperature-controlled cabinets provide is-30 DEG C ~ 50 DEG C, and precision is ± 0.1 DEG C.
Tested a method of testing for soil body impedance under different temperatures path by said apparatus, comprise the steps:
1) with the same preparation of soil sample 3 coupons, it is long that coupon is of a size of L() × B(is wide) × H(is high): 20cm × 20cm × 10cm, four sides of every block coupon all arranges a circle thermal insulation material, prevents its dissipated heat;
2) first block coupon is put into proving installation, thermistor is made to connect temp measuring system by wire, upper and lower copper coin connects electrochemical workstation by wire, and upper and lower temperature-controlled cabinet connects heating apparatus by respective venting channels, and vacuum pump interface connects vacuum pump; Detect the impermeability of sealed thermal insulating container, open vacuum pump afterwards and make in sealed thermal insulating container to be vacuum state, to reduce heat trnasfer;
3) upper and lower temperature-controlled cabinet is started, upper and lower temperature-controlled cabinet is made to be warmed to T2, T1 respectively, wherein T2>T1, is recorded in the time dependent curve of temperature conduction process middle impedance by electrochemical workstation and temp measuring system, and the time dependent curve of temperature;
4) first piece of coupon is taken out, change second piece of coupon and put into proving installation, make upper and lower temperature-controlled cabinet be warmed to T2 simultaneously, be recorded in the time dependent curve of temperature conduction process middle impedance by electrochemical workstation and temp measuring system, and the time dependent curve of temperature;
5) second piece of coupon is taken out, change the 3rd piece of coupon and put into proving installation, first make upper and lower temperature-controlled cabinet be warmed to T2 simultaneously, temperature-controlled cabinet is made to be cooled to T1 again, wherein T2>T1, the time dependent curve of temperature conduction process middle impedance is recorded in by electrochemical workstation and temp measuring system, and the time dependent curve of temperature.
Apparatus of the present invention design science, structure are simple, simple to operate, practical, the impedance of the soil body under different temperatures path can be measured, various temperature environment can be simulated, be specially adapted to the impedance measurement of the temperature variation area soil body, and characterize the physics of the soil body under different temperatures path, mechanics and electrology characteristic by impedance circuit parameter.
Accompanying drawing explanation
Fig. 1 is the structural representation of apparatus of the present invention.
In figure: copper coin, 8-coupon, the upper copper coin of 9-, the upper temperature-controlled cabinet of 10-, the upper plank of 11-, 12-fishbolt, 13-thermistor, 14-venting channels under temperature-controlled cabinet, 7-under plank, 6-under 1-sealed thermal insulating container, 2-vacuum connection jaws, 3-vacuum pump interface, 4-sample cushion cap, 5-.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1, under a kind of different temperatures path, test the device of soil body impedance, comprise in rectangular-shaped sealed thermal insulating container 1, the lid of sealed thermal insulating container 1 offers vacuum connection jaws 2 and vacuum pump interface 3; Base plate in sealed thermal insulating container 1 is fixed with sample cushion cap 4, sample cushion cap 4 is mounted with lower plank 5, lower plank 5 is mounted with lower temperature-controlled cabinet 6, lower temperature-controlled cabinet 6 is mounted with lower copper coin 7, lower copper coin 7 is mounted with coupon 8, coupon 8 is mounted with copper coin 9, upper copper coin 9 is mounted with temperature-controlled cabinet 10, upper temperature-controlled cabinet 10 is mounted with plank 11; Wherein, upper and lower plank 11,5 is all provided with fishbolt 12, and upper plank 11, upper temperature-controlled cabinet 10, upper copper coin 9, coupon 8, lower copper coin 7, lower temperature-controlled cabinet 6 and lower plank 5 close contact under the effect of fishbolt 12; Upper and lower copper coin 9,7 as testing impedance electrode, and is all provided with thermistor 13 in the center of upper and lower copper coin 9,7 inwall, and upper and lower copper coin 9,7 and thermistor 13 are all connected with wire and wire passes from vacuum connection jaws; Four sides of coupon 8 are provided with a circle thermal insulation material; The both sides of upper and lower temperature-controlled cabinet 10,6 are all provided with venting channels 14; Wherein, the temperature environment that upper and lower temperature-controlled cabinet 10,6 provides is-30 DEG C ~ 50 DEG C, and precision is ± 0.1 DEG C.
Tested the method for testing of soil body impedance under different temperatures path by said apparatus, comprise the steps:
1) with the same preparation of soil sample 3 coupons 8, coupon 8 is of a size of L × B × H (cm): 20 × 20 × 10, and four sides of every block coupon 8 all arrange a circle thermal insulation material;
2) first block coupon 8 is put into proving installation, thermistor 13 is made to connect temp measuring system by wire, upper and lower copper coin 9,7 connects electrochemical workstation by wire, upper and lower temperature-controlled cabinet 10,6 connects heating apparatus by respective venting channels 15, and vacuum pump interface 3 connects vacuum pump; Detect the impermeability of sealed thermal insulating container 1, open vacuum pump afterwards and make in sealed thermal insulating container 1 to be vacuum state, to reduce heat trnasfer;
3) upper and lower temperature-controlled cabinet 10,6 is started, upper and lower temperature-controlled cabinet 10,6 is made to be warmed to T2, T1 respectively, wherein T2>T1, the time dependent curve of temperature conduction process middle impedance is recorded in by electrochemical workstation and temp measuring system, and the time dependent curve of temperature;
4) first piece of coupon 8 is taken out, change second piece of coupon 8 and put into proving installation, make upper and lower temperature-controlled cabinet 10,6 be warmed to T2 simultaneously, the time dependent curve of temperature conduction process middle impedance is recorded in by electrochemical workstation and temp measuring system, and the time dependent curve of temperature;
5) second piece of coupon 8 is taken out, change the 3rd piece of coupon 8 and put into proving installation, first make upper and lower temperature-controlled cabinet 10,6 be warmed to T2 simultaneously, temperature-controlled cabinet 10 is made to be cooled to T1 again, wherein T2>T1, the time dependent curve of temperature conduction process middle impedance is recorded in by electrochemical workstation and temp measuring system, and the time dependent curve of temperature.
Claims (2)
1. test a device for soil body impedance under different temperatures path, it is characterized in that: comprise in rectangular-shaped sealed thermal insulating container (1), the lid of sealed thermal insulating container (1) offers vacuum connection jaws (2) and vacuum pump interface (3); Base plate in sealed thermal insulating container (1) is fixed with sample cushion cap (4), sample cushion cap (4) is mounted with lower plank (5), lower plank (5) is mounted with lower temperature-controlled cabinet (6), lower temperature-controlled cabinet (6) is mounted with lower copper coin (7), lower copper coin (7) is mounted with coupon (8), coupon (8) is mounted with copper coin (9), upper copper coin (9) is mounted with temperature-controlled cabinet (10), upper temperature-controlled cabinet (10) is mounted with plank (11); Wherein, (11,5) are all provided with fishbolt (12) with upper and lower plank, and upper plank (11), upper temperature-controlled cabinet (10), upper copper coin (9), coupon (8), lower copper coin (7), lower temperature-controlled cabinet (6) and lower plank (5) close contact under the effect of fishbolt (12); Upper and lower copper coin (9,7) is as testing impedance electrode, and be all provided with thermistor (13) in the center of upper and lower copper coin (9,7) inwall, upper and lower copper coin (9,7) and thermistor (13) are all connected with wire and wire passes from vacuum connection jaws; Four sides of coupon (8) are provided with a circle thermal insulation material; The both sides of upper and lower temperature-controlled cabinet (10,6) are all provided with venting channels (14).
2. tested a method of testing for soil body impedance under different temperatures path by device as claimed in claim 1, it is characterized in that, comprise the steps:
1) with the same preparation of soil sample 3 coupons (8), coupon (8) is of a size of L × B × H (cm): 20 × 20 × 10, and four sides of every block coupon (8) all arrange a circle thermal insulation material;
2) first block coupon (8) is put into proving installation, thermistor (13) is made to connect temp measuring system by wire, upper and lower copper coin (9,7) connects electrochemical workstation by wire, upper and lower temperature-controlled cabinet (10,6) connects heating apparatus by respective venting channels (14), and vacuum pump interface (3) connects vacuum pump; Detect the impermeability of sealed thermal insulating container (1), open vacuum pump afterwards and make in sealed thermal insulating container (1) to be vacuum state, to reduce heat trnasfer;
3) upper and lower temperature-controlled cabinet (10,6) is started, upper and lower temperature-controlled cabinet (10,6) is made to be warmed to T2, T1 respectively, wherein T2>T1, the time dependent curve of temperature conduction process middle impedance is recorded in by electrochemical workstation and temp measuring system, and the time dependent curve of temperature;
4) first piece of coupon (8) is taken out, change second piece of coupon (8) and put into proving installation, make upper and lower temperature-controlled cabinet (10,6) be warmed to T2 simultaneously, the time dependent curve of temperature conduction process middle impedance is recorded in by electrochemical workstation and temp measuring system, and the time dependent curve of temperature;
5) second piece of coupon (8) is taken out, change the 3rd piece of coupon (8) and put into proving installation, first make upper and lower temperature-controlled cabinet (10,6) be warmed to T2 simultaneously, temperature-controlled cabinet (10) is made to be cooled to T1 again, wherein T2>T1, the time dependent curve of temperature conduction process middle impedance is recorded in by electrochemical workstation and temp measuring system, and the time dependent curve of temperature.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410763170.5A CN104360164B (en) | 2014-12-13 | 2014-12-13 | Device and method for testing impedance of soil mass under different temperature paths |
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| CN201410763170.5A CN104360164B (en) | 2014-12-13 | 2014-12-13 | Device and method for testing impedance of soil mass under different temperature paths |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106771615A (en) * | 2016-11-25 | 2017-05-31 | 江苏科技大学 | A kind of soil body electrical conductance and permeability multipurpose test system and method for testing |
| CN109187653A (en) * | 2018-08-13 | 2019-01-11 | 西南交通大学 | The Horizontal Layer Soil dynamic electric resistor characteristic test method of meter and different temperatures |
| CN109188090A (en) * | 2018-08-13 | 2019-01-11 | 西南交通大学 | The nonlinear test method of different humidity electric resistance of soil in vertical demixing soil |
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| CN1103489A (en) * | 1993-12-01 | 1995-06-07 | 石油大学(北京) | Complex resistance measuring system for rock sample on condition of simulating high temp. and pressure in strata |
| JP2004333265A (en) * | 2003-05-07 | 2004-11-25 | Furukawa Electric Co Ltd:The | Method and apparatus for continuously measuring temperature dependence characteristics of electric electronic component |
| CN2685873Y (en) * | 2004-03-29 | 2005-03-16 | 昆明物理研究所 | Pyroelectric coefficient tester by dynamic method |
| CN203133173U (en) * | 2013-02-28 | 2013-08-14 | 青海省雷电灾害防御中心 | Device for testing soil resistivity change under artificial environment |
| CN103513109A (en) * | 2013-09-05 | 2014-01-15 | 南开大学 | Device and method for measuring in-situ soil electric conductivity |
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2014
- 2014-12-13 CN CN201410763170.5A patent/CN104360164B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1103489A (en) * | 1993-12-01 | 1995-06-07 | 石油大学(北京) | Complex resistance measuring system for rock sample on condition of simulating high temp. and pressure in strata |
| JP2004333265A (en) * | 2003-05-07 | 2004-11-25 | Furukawa Electric Co Ltd:The | Method and apparatus for continuously measuring temperature dependence characteristics of electric electronic component |
| CN2685873Y (en) * | 2004-03-29 | 2005-03-16 | 昆明物理研究所 | Pyroelectric coefficient tester by dynamic method |
| CN203133173U (en) * | 2013-02-28 | 2013-08-14 | 青海省雷电灾害防御中心 | Device for testing soil resistivity change under artificial environment |
| CN103513109A (en) * | 2013-09-05 | 2014-01-15 | 南开大学 | Device and method for measuring in-situ soil electric conductivity |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106771615A (en) * | 2016-11-25 | 2017-05-31 | 江苏科技大学 | A kind of soil body electrical conductance and permeability multipurpose test system and method for testing |
| CN106771615B (en) * | 2016-11-25 | 2019-09-03 | 江苏科技大学 | A kind of soil body electrical conductance and permeability multipurpose test system and test method |
| CN109187653A (en) * | 2018-08-13 | 2019-01-11 | 西南交通大学 | The Horizontal Layer Soil dynamic electric resistor characteristic test method of meter and different temperatures |
| CN109188090A (en) * | 2018-08-13 | 2019-01-11 | 西南交通大学 | The nonlinear test method of different humidity electric resistance of soil in vertical demixing soil |
| CN109187653B (en) * | 2018-08-13 | 2019-07-12 | 西南交通大学 | The Horizontal Layer Soil dynamic electric resistor characteristic test method of meter and different temperatures |
| CN109188090B (en) * | 2018-08-13 | 2019-11-05 | 西南交通大学 | The nonlinear test method of different humidity electric resistance of soil in vertical demixing soil |
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Inventor after: Han Pengju Inventor after: Zhang Xuelan Inventor after: He Bin Inventor after: Liu Jianping Inventor after: Zhao Yongfeng Inventor after: Guo Yonghui Inventor after: Wang Xinyu Inventor after: Yan Yibo Inventor after: Liang Dawei Inventor after: Qi Jincheng Inventor after: Hao Zhipeng Inventor after: Wang Maosang Inventor after: Zhang Yafen Inventor after: Dong Xiaoqiang Inventor after: Bai Xiaohong Inventor before: Han Pengju Inventor before: Zhao Yongfeng Inventor before: Guo Yonghui Inventor before: Wang Xinyu Inventor before: Zhang Yafen Inventor before: Liang Dawei Inventor before: Wang Maosang Inventor before: Dong Xiaoqiang Inventor before: Bai Xiaohong Inventor before: Zhang Xuelan Inventor before: He Bin Inventor before: Liu Jianping |
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