CN107192650A - Seal with wax the method for taking undisturbed soil permeability test soil sample - Google Patents
Seal with wax the method for taking undisturbed soil permeability test soil sample Download PDFInfo
- Publication number
- CN107192650A CN107192650A CN201710245204.5A CN201710245204A CN107192650A CN 107192650 A CN107192650 A CN 107192650A CN 201710245204 A CN201710245204 A CN 201710245204A CN 107192650 A CN107192650 A CN 107192650A
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- soil sample
- wax
- soil
- cylinder
- permeability test
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/36—Embedding or analogous mounting of samples
Abstract
The invention discloses a kind of method sealed with wax and take undisturbed soil permeability test soil sample, comprise the following steps：(1) soil sample monoblock is taken out, and method is cut with knife and soil sample is cut, cut into cylinder, cylinder soil sample diameter is less than the internal diameter of sampling spoon, highly more than sampling spoon height；(2) surrounding of cylinder soil sample is sealed with wax, soil sample sealed with wax in cylinder, the cylindrical soil sample diameter is less than the internal diameter of sampling spoon；(3) cutting ring inner and outer wall is uniformly smeared into vaseline, cutting ring is uniformly cut to waxy cast shape soil sample, form complete cutting ring from outside to inside, vaseline, layer of sealing with wax, the permeability test soil sample of undisturbed soil sample；(4) obtained permeability test soil sample loading permeameter is tested；(5) after the completion of testing, soil sample real area replaces cutting area of ring-knife to carry out infiltration coefficient calculating.The inventive method experiment is easy, can guarantee that the primary permeability energy of undisturbed soil, the hard plastic clay for being particularly suitable for use in harder or strong completely decomposed mud stone.
Description
Technical field
The present invention relates to Geotechnical Engineering During Geotechnical Tests field, more particularly to one kind, which is sealed with wax, takes original state permeability test soil sample side
Method.
Background technology
Infiltration coefficient is the index of concentrated expression soil body permeability, and the correct determination of its numerical value has very to infiltration calculation
Important meaning.Infiltration coefficient tests the method typically used indoors mainly constant head test method and varying head test method(s),
Constant head test method is applied to the big sandy soil of water penetration, and variable water level method is applied to the small cohesive soil of water penetration.Doing experiment
Cheng Zhong, pair with undisturbed soil sample do experiment when, it is necessary to use undisturbed.But it is due to laboratory test for the original needed for infiltration coefficient
Shape soil, in sampling, especially hard~hard plastic shape clay is sampled, sample is often crushed using core cutter method, or too hard
Firmly, cutting ring, which can not be pressed into, can not often succeed.Even if sampling successfully, it is inevitably generated and disturbs during transport, sample preparation etc.
Dynamic, soil sample loosens and can not test real infiltration coefficient.Further, since soil property is hard, soil sample is tended not to and can only remolded
The preparation of soil sample is used, and the soil sample being made can not reflect original state soil characteristics well.
Tested as more than the permeability test of the current soil body using cutting ring.Because undisturbed soil is harder, and it is crisp, use cutting ring
When cutting, sample is easily broken, and the harder Rock And Soil cutting ring in part cuts sample difficulty.Therefore, ring can not largely be used
Knife is cut, and can only cut method using knife and sample is cut, because knife cuts method cutting sample, it is impossible to ensure the flat of sample
It is whole, it is difficult to avoid the formation of side side wall seepage, it is therefore necessary to undisturbed is sampled using new method.
The information for being disclosed in the background section is merely intended to understanding of the increase to the general background of the present invention, without answering
When the prior art for being considered as recognizing or implying the information structure in any form well known to persons skilled in the art.
The content of the invention
It is an object of the invention to provide a kind of method sealed with wax and take undisturbed soil permeability test soil sample, so as to overcome soil sampling
Tested, often broken or too hard, cutting ring can not be pressed into the shortcoming smoothly sampled.
To achieve the above object, the invention provides a kind of method sealed with wax and take undisturbed soil permeability test soil sample, including with
Lower step：
(1) soil sampling, soil sample monoblock is taken out, and cuts method with knife soil sample is cut, and cuts into cylinder, cylinder soil sample
Diameter is less than the internal diameter of sampling spoon, highly more than sampling spoon height；
(2) surrounding of the cylinder soil sample of the step (1) is sealed with wax, soil sample is sealed with wax in cylinder, the cylinder
Soil sample diameter be less than sampling spoon internal diameter；
(3) cutting ring inner and outer wall is uniformly smeared into vaseline, cutting ring uniformly cut wax-like made from the step (2)
Cylindrical soil sample, forms complete cutting ring from outside to inside, vaseline, layer of sealing with wax, a permeability test soil sample for undisturbed soil sample；
(4) permeability test soil sample made from the step (3) is loaded into permeameter to be tested；
(5) after the completion of testing, soil sample real area replaces cutting area of ring-knife to carry out infiltration coefficient calculating.
Preferably, in above-mentioned technical proposal, cylinder soil sample diameter is less than sampling spoon internal diameter 0.5- in the step (1)
1cm, highly more than sampling spoon height 2-3cm.
Preferably, in above-mentioned technical proposal, the thickness sealed with wax in the step (2) is 1-2cm, cylinder overall size requirements
More than cutting ring internal diameter 1.5-3cm.
Compared with prior art, the present invention has the advantages that：
(1) method of the invention that take undisturbed soil permeability test soil sample of sealing with wax, cuts method using knife and sample is cut, and cuts
Sample is less than one size shape of cutting ring, after the completion of cutting, and sample side Zhou Jinhang is sealed with wax, it is straight that size of sealing with wax is greater than cutting ring
Footpath, is then cut with the cutting ring for having smeared vaseline to sample of sealing with wax again, and the sample so obtained can just use cutting ring
Permeability test is carried out in infiltration testing apparatus.This method experiment is easy, low-cost, ensure that the primary permeability of undisturbed soil
Can, it is all suitable for for some harder hard plastic clay or strong completely decomposed mud stone.
(2) method of the invention takes original state permeability for hard~hard plastic shape clay, complete~intense weathering munstone, sandstone etc.
Sample ensures that ground has original state effect substantially, this method is simple, low-cost, it is to avoid sampling is broken can not to be tested and again
The inaccuracy of sample is moulded, ensure that permeability test measures the accuracy of infiltration coefficient.
Brief description of the drawings
Fig. 1 be according to the present invention seal with wax take undisturbed soil permeability test soil sample method take experiment soil sample plan.
Fig. 2 be according to the present invention seal with wax take undisturbed soil permeability test soil sample method take experiment soil sample sectional drawing.
Main Reference Numerals explanation：
1- soil samples, 2- seals with wax layer, 3- petrolatum layers, 4- cutting rings.
Embodiment
Below in conjunction with the accompanying drawings, the embodiment to the present invention is described in detail, it is to be understood that the guarantor of the present invention
Shield scope is not limited by embodiment.
Explicitly indicated that unless otherwise other, otherwise in entire disclosure and claims, term " comprising " or its change
Change such as "comprising" or " including " etc. and will be understood to comprise stated element or part, and do not exclude other members
Part or other parts.
Embodiment 1
A kind of method for taking original state hard plastic clay permeability test soil sample of sealing with wax, comprises the following steps：
(1) soil sampling：Hard plastic shape clay soil sample monoblock is taken out, and method is cut with knife soil sample is cut, cut into circle
Post, cylinder soil sample diameter is slightly less than sampling spoon internal diameter 0.5-1cm, highly slightly larger than sampling spoon height 2-3cm；
(2) surrounding of the cylinder soil sample of the step (1) is sealed with wax, soil sample is sealed with wax in cylinder, the cylinder
Soil sample diameter be less than sampling spoon internal diameter；The thickness sealed with wax is 1-2cm, and cylinder overall size requirements are more than cutting ring internal diameter
1.5-3cm。
(3) cutting ring inner and outer wall is uniformly smeared into vaseline, cutting ring uniformly cut wax-like made from the step (2)
Cylindrical soil sample, then the soil sample cutting that it is unnecessary that cutting ring cools completely is smooth, form complete cutting ring from outside to inside 4, a vaseline
3rd, seal with wax the permeability test soil sample of layer 2, undisturbed soil sample 1；As Figure 1-Figure 2.
(4) permeability test soil sample made from the step (3) is loaded into permeameter to be tested；
(5) after the completion of testing, soil sample real area replaces cutting area of ring-knife to carry out infiltration coefficient calculating.
Embodiment 2
Complete severely-weathered mud, sandstone are looser relative to hard plastic shape clay, therefore seal with wax and take original state intense weathering munstone to permeate
Soil sample is tested, is comprised the following steps：
(1) soil sampling：Soil sample hole is excavated, untill excavation needs sample position；Soil sample surrounding Rock And Soil is excavated deep
Degree height is slightly larger than sampling spoon height 2-3cm, retains soil sample diameter and is slightly larger than cutting ring size；Method is cut with knife to cut soil sample
Cut, cut into cylinder, cylinder soil sample diameter is slightly less than sampling spoon internal diameter 0.5-1cm；
(2) surrounding of the cylinder soil sample of the step (1) is sealed with wax, soil sample is sealed with wax in cylinder, the cylinder
Soil sample diameter be less than sampling spoon internal diameter；The thickness sealed with wax is 1-2cm, and cylinder overall size requirements are more than cutting ring internal diameter
1.5-3cm；
(3) cutting ring inner and outer wall is uniformly smeared into vaseline, cutting ring uniformly cut wax-like made from the step (2)
Cylindrical soil sample, then cutting ring bottom is cut to complete severely-weathered mud, sandstone, sample is taken out, finally by the unnecessary soil in two
Sample cutting is smooth, forms the permeability test soil of a complete cutting ring from outside to inside 4, vaseline 3, layer 2 of sealing with wax, undisturbed soil sample 1
Sample；As Figure 1-Figure 2.
(4) permeability test soil sample made from the step (3) is loaded into permeameter to be tested；
(5) after the completion of testing, soil sample real area replaces cutting area of ring-knife to carry out infiltration coefficient calculating.
It is foregoing to the present invention specific illustrative embodiment description be in order to illustrate and illustration purpose.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to above-mentioned teaching, can be much changed
And change.The purpose of selecting and describing the exemplary embodiment is that explaining that the certain principles and its reality of the present invention should
With so that those skilled in the art can realize and using the present invention a variety of exemplaries and
A variety of selections and change.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (3)
1. a kind of method for taking undisturbed soil permeability test soil sample of sealing with wax, it is characterised in that comprise the following steps：
(1) soil sampling, soil sample monoblock is taken out, and cuts method with knife soil sample is cut, and cuts into cylinder, cylinder soil sample diameter
Less than the internal diameter of sampling spoon, highly more than sampling spoon height；
(2) surrounding of the cylinder soil sample of the step (1) is sealed with wax, soil sample is sealed with wax in cylinder, the cylindrical soil
Sample diameter is less than the internal diameter of sampling spoon；
(3) cutting ring inner and outer wall is uniformly smeared into vaseline, cutting ring is uniformly cut to waxy cast made from the step (2)
Shape soil sample, forms complete cutting ring from outside to inside, vaseline, layer of sealing with wax, a permeability test soil sample for undisturbed soil sample；
(4) permeability test soil sample made from the step (3) is loaded into permeameter to be tested；
(5) after the completion of testing, soil sample real area replaces cutting area of ring-knife to carry out infiltration coefficient calculating.
2. method according to claim 1 that take undisturbed soil permeability test soil sample of sealing with wax, it is characterised in that the step
(1) cylinder soil sample diameter is less than sampling spoon internal diameter 0.5-1cm in, highly more than sampling spoon height 2-3cm.
3. method according to claim 1 that take undisturbed soil permeability test soil sample of sealing with wax, it is characterised in that the step
(2) thickness sealed with wax in is 1-2cm, and cylinder overall size requirements are more than cutting ring internal diameter 1.5-3cm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710245204.5A CN107192650B (en) | 2017-04-14 | 2017-04-14 | Method for taking undisturbed soil permeability test soil sample by wax sealing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710245204.5A CN107192650B (en) | 2017-04-14 | 2017-04-14 | Method for taking undisturbed soil permeability test soil sample by wax sealing |
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| CN107192650A true CN107192650A (en) | 2017-09-22 |
| CN107192650B CN107192650B (en) | 2020-12-08 |
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Cited By (13)
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| CN107796732A (en) * | 2017-11-09 | 2018-03-13 | 中原工学院 | A kind of experimental rig and its application method for being used to examine stickiness soil sample uniformity |
| CN108396793A (en) * | 2018-05-20 | 2018-08-14 | 郑州大学 | A kind of impervious sample production method of easy soil cement |
| CN108444892A (en) * | 2018-05-20 | 2018-08-24 | 郑州大学 | A kind of impervious sample production method of the soil cement of simplicity |
| CN108593341A (en) * | 2018-06-26 | 2018-09-28 | 西安建筑科技大学 | A kind of large size intact loess sampling method |
| CN109459460A (en) * | 2018-12-25 | 2019-03-12 | 长安大学 | A kind of scanning electron microscope observation device and method of intact loess humidification sample |
| CN109556931A (en) * | 2018-10-31 | 2019-04-02 | 同济大学 | Soil cement cutting ring sample preparation facilities and permeability coefficient of cement soil measuring method, equipment |
| CN109723053A (en) * | 2018-12-20 | 2019-05-07 | 重庆交通大学 | A kind of sampling method of major diameter particulate matter undisturbed |
| CN111502580A (en) * | 2020-04-09 | 2020-08-07 | 东北大学 | Device and method for drilling broken rock mass to extract rock core |
| CN111650026A (en) * | 2020-05-06 | 2020-09-11 | 温州大学 | Nondestructive preservation process for granular soil sample |
| CN114112476A (en) * | 2021-11-30 | 2022-03-01 | 西安理工大学 | Device for sampling in partition mode for root system soil mechanics test and test method |
| CN114674591A (en) * | 2022-02-25 | 2022-06-28 | 成都理工大学 | Undisturbed rock-soil body sampling device and method |
| CN114739729A (en) * | 2022-04-29 | 2022-07-12 | 中国电建集团成都勘测设计研究院有限公司 | Construction method for rapidly obtaining undisturbed soil samples in batches |
| CN117169095A (en) * | 2023-08-30 | 2023-12-05 | 宁夏大学 | Erosion experimental equipment of rainwater seepage soil column |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107796732A (en) * | 2017-11-09 | 2018-03-13 | 中原工学院 | A kind of experimental rig and its application method for being used to examine stickiness soil sample uniformity |
| CN107796732B (en) * | 2017-11-09 | 2024-01-19 | 中原工学院 | Test device for detecting uniformity of cohesive soil sample and application method thereof |
| CN108396793A (en) * | 2018-05-20 | 2018-08-14 | 郑州大学 | A kind of impervious sample production method of easy soil cement |
| CN108444892A (en) * | 2018-05-20 | 2018-08-24 | 郑州大学 | A kind of impervious sample production method of the soil cement of simplicity |
| CN108593341B (en) * | 2018-06-26 | 2023-07-07 | 西安建筑科技大学 | Large undisturbed loess sampling method |
| CN108593341A (en) * | 2018-06-26 | 2018-09-28 | 西安建筑科技大学 | A kind of large size intact loess sampling method |
| CN109556931A (en) * | 2018-10-31 | 2019-04-02 | 同济大学 | Soil cement cutting ring sample preparation facilities and permeability coefficient of cement soil measuring method, equipment |
| CN109723053A (en) * | 2018-12-20 | 2019-05-07 | 重庆交通大学 | A kind of sampling method of major diameter particulate matter undisturbed |
| CN109459460A (en) * | 2018-12-25 | 2019-03-12 | 长安大学 | A kind of scanning electron microscope observation device and method of intact loess humidification sample |
| CN111502580A (en) * | 2020-04-09 | 2020-08-07 | 东北大学 | Device and method for drilling broken rock mass to extract rock core |
| CN111502580B (en) * | 2020-04-09 | 2021-06-08 | 东北大学 | Device and method for drilling broken rock mass to extract rock core |
| CN111650026A (en) * | 2020-05-06 | 2020-09-11 | 温州大学 | Nondestructive preservation process for granular soil sample |
| CN114112476B (en) * | 2021-11-30 | 2023-08-11 | 西安理工大学 | Device and method for partitioned sampling of root system soil mechanics test |
| CN114112476A (en) * | 2021-11-30 | 2022-03-01 | 西安理工大学 | Device for sampling in partition mode for root system soil mechanics test and test method |
| CN114674591A (en) * | 2022-02-25 | 2022-06-28 | 成都理工大学 | Undisturbed rock-soil body sampling device and method |
| CN114739729A (en) * | 2022-04-29 | 2022-07-12 | 中国电建集团成都勘测设计研究院有限公司 | Construction method for rapidly obtaining undisturbed soil samples in batches |
| CN117169095A (en) * | 2023-08-30 | 2023-12-05 | 宁夏大学 | Erosion experimental equipment of rainwater seepage soil column |
| CN117169095B (en) * | 2023-08-30 | 2024-03-29 | 宁夏大学 | Erosion experimental equipment of rainwater seepage soil column |
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