CN203101660U - In-situ continuous penetration sounding probe applied to NAPLs contamination sandy soil field survey - Google Patents
In-situ continuous penetration sounding probe applied to NAPLs contamination sandy soil field survey Download PDFInfo
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- CN203101660U CN203101660U CN 201320034614 CN201320034614U CN203101660U CN 203101660 U CN203101660 U CN 203101660U CN 201320034614 CN201320034614 CN 201320034614 CN 201320034614 U CN201320034614 U CN 201320034614U CN 203101660 U CN203101660 U CN 203101660U
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Abstract
The utility model discloses an in-situ continuous penetration sounding probe applied to NAPLs contamination sandy soil field survey. A time domain reflection testing probe is arranged between a probe rod of a traditional static penetrometer and a friction barrel. According to the structure of the time domain reflection testing probe, six symmetric stainless steel needles are embedded in the outer surface of a hollow Derlin rod and are fixed with the Derlin rod through bolts; inner conductors of two coaxial cables are respectively welded with a pair of bolts which are on the upper end of the Derlin rod and pass through the diameter; and each two adjacent bolts which are located on both sides of a pair of bolts form a group and are respectively welded with an outer conductor of a respective coaxial cable. The sounding probe can rapidly, continuously and accurately measure the dielectric constant, the conductivity, the cone tip resistance and the side friction resistance of soil layers of different depths. By using the electrical and mechanical parameters, NAPLs contamination sandy soil field contamination region and pollution degree can be identified. According to the utility model, rapid screening of a NAPLs contamination field is offered with a powerful tool.
Description
Technical field
The utility model relates to exploration feeler inspection probe, especially relates to the continuous penetration sounding probe of original position that a kind of NAPLs of being used for pollutes the prospecting of sandy soil place.
Background technology
Along with the development of chemical industry and the generally use of chemical products, be that the nonaqueous phase liquid (NAPLs) of representative highlights gradually to soil and phreatic pollution problem with fuel oil (as diesel oil), chlorohydrocarbon (as phenixin), aromatic amine (as aniline) etc.Polluted area space distribution discreteness is big, the dark characteristics of the pollutants transfer degree of depth because of having for the contaminated site of this type, thereby has caused the difficulty of prospecting.For the NAPLs contaminated site, traditional surveying method is that chemical analysis is carried out in drill hole sampling at the scene then in the laboratory.The shortcoming that this method exists is consuming time, get original state sample difficulty, expense is high, therefore, how quick, accurate, economic the scope and the pollution level of exploration Polluted area are the primary links that this class contaminated site reparation faces.In recent years, external many scholars test the content that the electrical properties (specific inductive capacity, conductivity) of having found native medium can effectively characterize NAPLs in the soil, can be used as the detection index that NAPLs pollutes soil.Therefore invent a kind of feeler inspection probe that can rapidly, continuously, accurately obtain different soil electrical properties in the contaminated site, the rapid screening of NAPLs contaminated site is had significant values.
The injection rapidly, continuously of original position static sounding (CPT) instrument is also tested the mechanical characteristic (being static point resistance and side friction) of each soil layer, is common tool in the geotechnical engineering investigation.At present, at the prospecting of the original position of contaminated site, some scholar (as external Campanella etc., domestic Liu Song jade) has proposed resistivity method both at home and abroad, and has developed the feeler inspection probe of testing native resistivity of media, is used for the detection of heavy-metal pollution soil.Yet, facts have proved that resistivity probe is difficult to effectively survey NAPLs and pollutes soil.Time domain reflectometry can record the specific inductive capacity and the conductivity (resistivity inverse) of medium simultaneously, and its medium dielectric constant microwave medium can characterize the content that NAPLs pollutes NAPLs in the soil preferably.In addition, conductivity can give verification to test result as auxiliary parameter
Summary of the invention
The continuous penetration sounding probe of the original position that provides a kind of NAPLs of being used for to pollute the prospecting of sandy soil place is provided the purpose of this utility model.
The technical solution adopted in the utility model is:
The utility model comprises feeler lever, is provided with friction bucket and conical probe below feeler lever successively.Between described feeler lever and friction bucket, the time domain reflectometry test probe is housed also; The structure of this time domain reflectometry test probe is as follows:
At the upper end of the Derlin of hollow rod and feeler lever with being threaded; On one section face of cylinder at Derlin rod middle part, embed the six roots of sensation stainless pin that is symmetrically distributed; Six roots of sensation stainless pin upper and lower end and Derlin rod are screwed respectively; Two concentric cable penetrate through the Derlin of upper end rod hollow space from the feeler inspection feeler lever, wherein stainless pin upper end and the pair of screws by Derlin rod diameter respectively with inner conductor welding separately, adjacent two screws that are positioned at described pair of screws both sides are respectively done for oneself one group, respectively with the welding of coaxial cable outer conductor separately, the upper end of friction bucket and the excellent lower end of Derlin are with being threaded; In the lower end of friction bucket conical probe is installed.
The diameter of described six roots of sensation stainless pin is 4mm, and length is 200mm.
The beneficial effect that the utlity model has is:
1) this probe records specific inductive capacity, conductivity, static point resistance and the side friction of soil media simultaneously, wherein static point resistance and side friction are used for identifying saturated sand and packing, specific inductive capacity is used for characterizing the content of NAPLs pollutant in the sandy soil, in addition, conductivity is as auxiliary parameter, and the correlationship by sandy soil conductivity and water cut gives verification to test result.
2) this probe and traditional static sounding (CPT) instrument combine, and realize original position injection rapidly, continuously and measurement accurately, have reached the purpose of rapid screening NAPLs Polluted area scope and pollution level.
3) the utility model is provided with two concentric cable and can carries out parallel test, has improved reliability of testing result.
4) that the calibration process of test sandy soil specific inductive capacity and conductivity is had theoretical foundation is strong in this invention, the simple advantage of process.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is the sectional view in Fig. 1 the utility model time domain reflectometry test probe 1-1 cross section.
Fig. 3 is saturated sand medium dielectric constant microwave medium and NAPLs volume content relation.
Fig. 4 is conductivity and a volumetric(al) moisture content relation in the saturated sand.
Fig. 5 is that the artificial NAPLs that is provided with pollutes sand layered distribution figure.
Fig. 6 pollutes sand layered distribution, the Time Domain Reflectometry oscillogram that records at the NAPLs that Fig. 5 is provided with.
Among the figure: 1, concentric cable, 2, the Derlin rod, 3, screw thread, 4, screw, 5, stainless pin, 6, the friction bucket, 7, conical probe, 8, feeler lever.
Embodiment
Below in conjunction with drawings and Examples the utility model is described further.
As shown in Figure 1 and Figure 2, the utility model comprises feeler lever 8, and being provided with friction bucket 6 below feeler lever 8 successively is traditional static sounding instrument probe with conical probe 7(); Between described feeler lever 8 and friction bucket 6, the time domain reflectometry test probe is housed also; The structure of this time domain reflectometry test probe is as follows:
The utility model is connected with feeler lever 8 usefulness screw threads 3 in the upper end of the Derlin of hollow rod 2; On one section face of cylinder at Derlin rod 2 middle parts, embed the six roots of sensation stainless pin 5 that is symmetrically distributed; Six roots of sensation stainless pin 5 upper and lower ends and Derlin rod 2 are fixing with 12 screws 4 respectively; Two concentric cable 1 penetrate through the Derlin of upper end rod hollow space from feeler lever, wherein stainless pin upper end and the pair of screws 4 by Derlin rod 2 diameters respectively with concentric cable 1 inner wire welding separately, adjacent two screws 4 that are positioned at described pair of screws 4 both sides are respectively done for oneself one group, respectively with the welding of concentric cable 1 outer conductor separately, its concrete connected mode is seen among Fig. 2 shown in the arrow; The upper end of friction bucket 6 is connected with screw thread 3 with Derlin rod 2 lower ends; In the lower end of friction bucket 6 conical probe 7 is installed.
The diameter of described six roots of sensation stainless pin 5 is 4mm, and length is 200mm.This six roots of sensation draw point and two continuous concentric cable thereof have been formed the time domain reflectometry test probe, during site inspection, by electromagnetic pulse of signal projector emission, this pulse is propagated by concentric cable and stainless pin, running into the discontinuous local generation reflection of impedance and, finally passing through to analyze the specific inductive capacity and the conductivity of this reflected signal acquisition medium by this reflected signal of oscillograph recording.Described time domain reflectometry test probe is installed on the feeler lever of traditional static penetrometer (CPT).
Principle of work of the present utility model is as follows:
1) this feeler inspection probe is undertaken by following formula the demarcation of sandy soil specific inductive capacity and conductivity:
Specific inductive capacity:
Wherein, K is the tested media specific inductive capacity, and a, b are that calibrating parameters can be demarcated by the medium of measuring several groups of known dielectric constants, and c is the light velocity (3 * 10
8M/s), Δ t is the apparatus measures parameter, and L is a stainless pin length.
Conductivity:
Wherein, σ is the tested media conductivity, and a, b are calibrating parameters, can demarcate V by the medium of measuring several groups of known conductivity
o, V
∞Be the apparatus measures parameter.
2) by the soil layer property parameter that records NAPLs is polluted native evaluation procedure:
At first static point resistance that is recorded by the static sounding instrument probe and side friction are embezzled with sandy soil layer and packing the stratum and are differentiated, characterize the content of NAPLs pollutant then with specific inductive capacity, the correlationship by conductivity and water cut gives verification to characterization result at last.
In the utility model, handle by the method for standard for the related data of static point resistance and side friction.
3) NAPLs pollutant load and specific inductive capacity relation and pollution aspect are determined:
Fig. 3 represents the relation of NAPLs pollutant volume content and specific inductive capacity in the saturated sand, and Fig. 4 represents the relation of volumetric(al) moisture content and conductivity in the saturated sand.As can be seen from the figure specific inductive capacity reduces significantly with the increase of NAPLs content, and conductivity then significantly increases with the increase of volume water cut.Fig. 5 represents that the artificial NAPLs that is provided with pollutes sand layered distribution figure.Fig. 6 is the Time Domain Reflectometry oscillogram that set clay distribution situation test draws at Fig. 5, as can be seen from the figure, can clearly tell the position that NAPLs pollutes the soil layer upper and lower interface by reflection configuration.
Claims (2)
1. one kind is used for the continuous penetration sounding probe of original position that NAPLs pollutes the prospecting of sandy soil place, comprises feeler lever, is provided with friction bucket and conical probe below feeler lever successively; It is characterized in that: between described feeler lever and friction bucket, the time domain reflectometry test probe is housed also; The structure of this time domain reflectometry test probe is as follows: at the upper end of the Derlin of hollow rod and feeler lever with being threaded; On one section face of cylinder at Derlin rod middle part, embed the six roots of sensation stainless pin that is symmetrically distributed; Six roots of sensation stainless pin upper and lower end and Derlin rod are screwed respectively; Two concentric cable penetrate through the Derlin of upper end rod hollow space from feeler lever, wherein stainless pin upper end and the pair of screws by Derlin rod diameter respectively with inner conductor welding separately, adjacent two screws that are positioned at described pair of screws both sides are respectively done for oneself one group, respectively with coaxial cable outer conductor weldering separately; The upper end of friction bucket and the excellent lower end of Derlin are with being threaded; In the lower end of friction bucket conical probe is installed.
2. a kind of continuous penetration sounding probe of original position that NAPLs pollutes the prospecting of sandy soil place that is used for according to claim 1, it is characterized in that: the diameter of described six roots of sensation stainless pin is 4mm, and length is 200mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320034614 CN203101660U (en) | 2013-01-21 | 2013-01-21 | In-situ continuous penetration sounding probe applied to NAPLs contamination sandy soil field survey |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320034614 CN203101660U (en) | 2013-01-21 | 2013-01-21 | In-situ continuous penetration sounding probe applied to NAPLs contamination sandy soil field survey |
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| CN203101660U true CN203101660U (en) | 2013-07-31 |
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| CN 201320034614 Expired - Lifetime CN203101660U (en) | 2013-01-21 | 2013-01-21 | In-situ continuous penetration sounding probe applied to NAPLs contamination sandy soil field survey |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103116189A (en) * | 2013-01-21 | 2013-05-22 | 浙江大学 | In-situ continuous penetrating probe used in non-aqueous phase liquids (NAPLs) polluted sandy soil field investigation |
| CN108318326A (en) * | 2018-01-19 | 2018-07-24 | 浙江大学 | A kind of miniature static sounding feeler lever |
| WO2023070939A1 (en) * | 2021-10-26 | 2023-05-04 | 浙江大学 | Soil multi-pollutant recognition probe based on multispectral and time domain reflectometry, and method |
-
2013
- 2013-01-21 CN CN 201320034614 patent/CN203101660U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103116189A (en) * | 2013-01-21 | 2013-05-22 | 浙江大学 | In-situ continuous penetrating probe used in non-aqueous phase liquids (NAPLs) polluted sandy soil field investigation |
| CN103116189B (en) * | 2013-01-21 | 2015-11-11 | 浙江大学 | The continuous penetration sounding probe of original position of sand field prospecting is polluted for NAPLs |
| CN108318326A (en) * | 2018-01-19 | 2018-07-24 | 浙江大学 | A kind of miniature static sounding feeler lever |
| CN108318326B (en) * | 2018-01-19 | 2020-11-20 | 浙江大学 | Miniature static sounding probe rod |
| WO2023070939A1 (en) * | 2021-10-26 | 2023-05-04 | 浙江大学 | Soil multi-pollutant recognition probe based on multispectral and time domain reflectometry, and method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130731 |