CN201844991U - Environment pore pressure cone penetration test probe capable of testing dielectric constant of soil body - Google Patents
Environment pore pressure cone penetration test probe capable of testing dielectric constant of soil body Download PDFInfo
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- CN201844991U CN201844991U CN2010206008930U CN201020600893U CN201844991U CN 201844991 U CN201844991 U CN 201844991U CN 2010206008930 U CN2010206008930 U CN 2010206008930U CN 201020600893 U CN201020600893 U CN 201020600893U CN 201844991 U CN201844991 U CN 201844991U
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- Geophysics And Detection Of Objects (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses an environment pore pressure cone penetration test probe capable of testing a dielectric constant of a soil body on site. The center of the probe is provided with a coaxial cable (1); the coaxial cable (1) is enclosed by an insulator (2); the insulator (2) is arranged in a collapsible cylindrical receiver (3); a gap is retained at the lower part of the collapsible cylindrical receiver (3) for accommodating and testing a soil sample (4); a center antenna (5) is used for directly connecting the bottom of the probe and the coaxial cable; the center antenna (5) is positioned in the center of a side wall friction cylinder (6); a conical probe (8) is connected under the side wall friction cylinder (6); and a pore pressure filter ring (7) is positioned in the connecting position of the side wall friction cylinder (6) and the conical probe (8).
Description
Technical field
The utility model relates to a kind of environment hole of surveying dielectric constant of soil body and presses static sounding probe, belongs to whether a kind of pollutant that can detect in the underground soil body exists and reach the static sounding device that pollutant kind is discerned in Geotechnical Engineering and the field of environment engineering.
Background technology
The static sounding technology is meant the sounding rod indentation test soil layer that utilizes pressure apparatus will have contact probe, the static point resistance of throughput examining system test soil, sidewall friction resistance etc., can determine some basic physico mechanical characteristic of soil, as the deformation modulus of soil, the allowable bearing of soil etc.The static sounding technology is the history in existing more than 80 year so far.The widespread use static sounding has partly or entirely replaced probing and the sampling in the engineering investigation in the world.China at first succeeded in developing the electric measuring type static sounding and is applied to engineering investigation in nineteen sixty-five.Along with the fast development of sensor technology, a lot of new static sounding technology occurred in recent years, these technology can obtain pore water pressure, seismic event, pollutant proterties, temperature even the image of soil layer quickly and accurately.It has been widely used in the environmental geotechnical field abroad.Along with rapid economy development, the quickening of urbanization and process of industrialization, place soil pollutes more and more serious, and the ground circle environment that we depend on for existence goes from bad to worse, and environmental geotechnical engineering problems has become China's Geotechnical Engineering and environmental engineering worker important research project.For the detection whether pollutant exists, adopt the means of measuring electrology characteristics such as resistivity, conductivity in the soil body to be judged usually.Yet resistivity is very inresponsive for the kind of pollutant, and specific inductive capacity is very responsive.The variation of specific inductive capacity depends on the frequency of electromagnetic field pulse in the test, thereby generally disperses.Yet the frequency of electromagnetic field pulse is when about 50 MHz are above, and specific inductive capacity is essentially constant.Based on this theory, press static sounding probe in conjunction with conventional hole.
Summary of the invention
Technical matters:The technical problems to be solved in the utility model is the defective that exists at the quiet spy technology of domestic existing single doube bridge, presses static sounding probe but propose a kind of environment hole that can be used for the test soil body dielectric coefficient of environmental area.The utilized high-frequency impedance measurement detector that the utility model proposes is measured the specific inductive capacity of soil sample simultaneously and static sounding probe is pressed in the environment hole of conductivity, utilizes the kind of this existence of popping one's head in detection of contamination and identification pollutant.
Technical scheme:It is concentric cable that but the static sounding probe center is pressed in the environment hole of test soil body dielectric coefficient of the present utility model, concentric cable is surrounded by insulator, insulator is placed in the collapsible cylindrical shape receiver, the space is left in the bottom of collapsible cylindrical shape receiver, hold the test soil sample, what probe bottom and concentric cable directly linked to each other is center antenna, center antenna is positioned at sidewall friction tube central authorities, be connected with the circular cone probe below the sidewall friction tube, hole press filtration ring is positioned at the junction of sidewall friction tube and circular cone probe.
The cone angle of described circular cone probe is 60 °, and the awl basal cross section is long-pending to be 10 cm
2, sidewall friction tube surface area 150 cm
2
In the actual field operation, the concrete steps of test soil body dielectric coefficient are:
With the sniffer injection near the degree of depth of appointment, stop injection then;
2. with proposing withdrawal on the circular cone probe, continue down injection, make soil sample enter in the collapsible cylindrical shape receiver;
3. produce a high-frequency electromagnetic field pulse on the face of land, be delivered on the soil sample, obtain the data that center antenna is returned, can determine the specific inductive capacity of soil sample by concentric cable;
4. end of test (EOT) is released soil sample in the cylindrical shape receiver, and the circular cone probe resets, and can repeat the test that said process carries out next degree of depth.
Beneficial effect:The utility model has solved the defective that the quiet spy technology of domestic existing single doube bridge can not detect underground soil body pollutant, can effectively measure the specific inductive capacity of the soil body, thereby whether and kind the existence of judging pollutant.
Description of drawings
Fig. 1 is component arrangement figure of the present utility model;
Wherein have: concentric cable 1, insulator 2, collapsible cylindrical shape receiver 3, soil sample 4, center antenna 5, sidewall friction tube 6, hole press filtration ring 7, circular cone probe 8.
Embodiment
But the environment hole of the utility model test soil body dielectric coefficient presses static sounding probe to comprise: concentric cable 1, concentric cable 1 is surrounded by insulator 2, insulator 2 is placed in the collapsible cylindrical shape receiver 3, the space is left in the bottom of collapsible cylindrical shape receiver 3, hold test soil sample 4, what probe bottom and concentric cable directly linked to each other is center antenna 5, center antenna 5 is positioned at sidewall friction tube 6 central authorities, be connected with circular cone probe 8 below sidewall friction tube 6, hole press filtration ring 7 is positioned at the junction of sidewall friction tube 6 and circular cone probe 8.
The function of function of conventional static sounding that this probe is integrated (can survey end resistance, frictional resistance and hole presses) and test soil body dielectric coefficient has further expanded the content of multi-functional static sounding technology.
The concrete operations step of test soil body dielectric coefficient is:
With the sniffer injection near the degree of depth of appointment, stop injection then;
2. with proposing withdrawal on the circular cone probe 8, continue down injection, make soil sample enter in the collapsible cylindrical shape receiver 3;
3. produce a high-frequency electromagnetic field pulse on the face of land, be delivered on the soil sample 4, obtain the data that center antenna 5 is returned, can determine the specific inductive capacity of soil sample 4 by concentric cable 1;
4. end of test (EOT) is released soil sample 4 in cylindrical shape receiver 3, and circular cone probe 8 resets, and can repeat the test that said process carries out next degree of depth.
Claims (2)
1.1. static sounding probe is pressed in the environment hole that can survey dielectric constant of soil body, it is characterized in that this center probe is concentric cable (1), concentric cable (1) is surrounded by insulator (2), insulator (2) is placed in the collapsible cylindrical shape receiver (3), the space is left in the bottom of collapsible cylindrical shape receiver (3), hold test soil sample (4), what probe bottom and concentric cable directly linked to each other is center antenna (5), center antenna (5) is positioned at sidewall friction tube (6) central authorities, be connected with circular cone probe (8) in the below of sidewall friction tube (6), hole press filtration ring (7) is positioned at the junction of sidewall friction tube (6) and circular cone probe (8).
2. static sounding probe is pressed in the environment hole of surveying dielectric constant of soil body according to claim 1, it is characterized in that the cone angle of circular cone probe (8) is 60 °, and the awl basal cross section is long-pending to be 10 cm
2, sidewall friction tube (6) surface area 150 cm
2
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206008930U CN201844991U (en) | 2010-11-11 | 2010-11-11 | Environment pore pressure cone penetration test probe capable of testing dielectric constant of soil body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206008930U CN201844991U (en) | 2010-11-11 | 2010-11-11 | Environment pore pressure cone penetration test probe capable of testing dielectric constant of soil body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201844991U true CN201844991U (en) | 2011-05-25 |
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ID=44039878
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206008930U Expired - Fee Related CN201844991U (en) | 2010-11-11 | 2010-11-11 | Environment pore pressure cone penetration test probe capable of testing dielectric constant of soil body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201844991U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135572A (en) * | 2010-11-11 | 2011-07-27 | 东南大学 | Environmental pore-pressure cone penetration test probe capable of measuring dielectric constant of soil |
| CN102400456A (en) * | 2011-11-17 | 2012-04-04 | 东南大学 | Environment piezocone penetration test probe capable of testing fluorescence intensity of soil body |
| CN102900063A (en) * | 2012-10-30 | 2013-01-30 | 东南大学 | Dynamic pore-pressure static sounding probe for detecting sludge |
| CN103698366A (en) * | 2014-01-02 | 2014-04-02 | 东南大学 | Multifunctional digital rock-soil static cone penetration test system |
-
2010
- 2010-11-11 CN CN2010206008930U patent/CN201844991U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102135572A (en) * | 2010-11-11 | 2011-07-27 | 东南大学 | Environmental pore-pressure cone penetration test probe capable of measuring dielectric constant of soil |
| CN102400456A (en) * | 2011-11-17 | 2012-04-04 | 东南大学 | Environment piezocone penetration test probe capable of testing fluorescence intensity of soil body |
| CN102900063A (en) * | 2012-10-30 | 2013-01-30 | 东南大学 | Dynamic pore-pressure static sounding probe for detecting sludge |
| CN102900063B (en) * | 2012-10-30 | 2014-12-17 | 东南大学 | Dynamic pore-pressure static sounding probe for detecting sludge |
| CN103698366A (en) * | 2014-01-02 | 2014-04-02 | 东南大学 | Multifunctional digital rock-soil static cone penetration test system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110525 Termination date: 20131111 |