CN109655325A - A kind of ground sampling method for geotechnical engineering - Google Patents
A kind of ground sampling method for geotechnical engineering Download PDFInfo
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- CN109655325A CN109655325A CN201910147413.5A CN201910147413A CN109655325A CN 109655325 A CN109655325 A CN 109655325A CN 201910147413 A CN201910147413 A CN 201910147413A CN 109655325 A CN109655325 A CN 109655325A
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- ground
- geotechnical engineering
- sample
- sampling
- sampling method
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- 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
-
- 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
- G01N1/38—Diluting, dispersing or mixing samples
-
- 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
- G01N1/42—Low-temperature sample treatment, e.g. cryofixation
-
- 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
- G01N2001/2873—Cutting or cleaving
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Sampling And Sample Adjustment (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The present invention relates to a kind of ground sampling methods for geotechnical engineering, comprising: addressing selects many places sampling spot with typical intact prismatical joint distribution characteristics；Mixing, takes out the ground in different sampling spots of the identical equal portions in many places, and is stirred；Freeze, freezes the ground mixture at the sampling spot；The ground freezed is cut or is drilled through column core by cutting or drill core.The present invention is freezed using freezing system by range cylindrical joint ground is sampled in advance, water congeals into ice around making and cementing integral with ground, to complete and high-intensitive holding sample, guarantee to obtain the integrality containing Fracture Networks ground from on-site cutting or coring to greatest extent；Cooperation is fixed and thermal insulation material avoids and freezes rock sample disturbance of thawing and collide during transportation and cause weak structural face to open to rupture, and the sample for meeting laboratory standard size was processed into before ground thaws.
Description
Technical field
The present invention relates to geotechnical engineering fields, and in particular to a kind of ground sampling method for geotechnical engineering.
Background technique
Geotechnical engineering is a kind of new skill that American-European countries sets up in civil engineering practice the 1960s
Art system.Geotechnical engineering is to solve ground and soil body engineering problem, including ground and basis, side slope and underground engineering etc. are asked
Topic, as the research object of oneself.Soil sampling refers to the method for acquisition pedotheque, laying and sampling skill including sampling
Art.Section soil sample is adopted, should be carried out after section is observed and recorded.Before sampling most table should be pruned first by section trimming, cleaning
Then the surface dust of layer is successively sampled from center typical parts by level from top to bottom again.Currently, prismatical joint rock-soil mechanics characteristic
Research generally use numerical simulation, model test, test in situ method, and Large Field experiment work it is complicated, it is laborious,
Time-consuming, data discrete, class geotechnical model laboratory test joint construction is more regular and simple, poor with nature prismatical joint ground
Different larger, the reliability of numerical experiments result depends on the Rational choice of sillar and joint constitutive relation.
Experiment be rock-soil mechanics field pass through frequently with a kind of research method, mentioned to carry out relevant experiment of machanics needs
Before be sampled, common sampling method includes drill hole sampling (core) and block stone sampling (cutting, pick).Due to prismatical joint rock
Soil is generally poor by the cutting of multiple groups joint, integrality, and either drill core still cuts what acquisition was constructed containing complete column joint fissure
Rock sample is very difficult, often contains only one group or does not include joint, the examination for meeting experimental standard is difficult into fetching
Sample cannot reflect the mechanical property of ground.In consideration of it, ground basic physical and mechanical experiment research in prismatical joint is there is not yet related text
Report is offered, therefore prismatical joint ground field sampling and laboratory sample preparation become rock-soil mechanics field urgent problem.
Summary of the invention
The present invention provides a kind of ground sampling methods for geotechnical engineering, solve the problems, such as techniques discussed above.
The scheme that the present invention solves above-mentioned technical problem is as follows: a kind of ground sampling method for geotechnical engineering, comprising:
Addressing selects many places sampling spot with typical intact prismatical joint distribution characteristics；
Mixing, takes out the ground in different sampling spots of the identical equal portions in many places, and is stirred；
Freeze, freezes the ground mixture at the sampling spot；
The ground freezed is cut or is drilled through column core by cutting or drill core.
Further, the mixing further include:
Certain bating liquor is added when being stirred.
It further, further include protecting,
It wraps up and fixes cutting or what is drilled through freeze rock sample；
The rock sample that freezes fixed is placed in thermal insulation separation hot tank.
Further, the protection further include:
By Refrigerated Transport, the thermal insulation separation hot tank is shipped back laboratory.
It further, further include being processed into sample,
Holding is freezed to be processed into the examination for complying with standard and include complete column joint fissure network under the frozen state of rock sample
Sample.
It is further, described to be processed into sample further include:
The sample completed the process is wrapped using plastic foil or rubber band, ruptures or scatters after preventing it from thawing.
Further, further includes: it thaws,
The sample being processed into is thawed in its natural state, flows out its moisture, is restored to presence states, and keep column
The integrality of joint ground；
The addressing includes:
Excavate prismatical joint ground area underground chamber；
There is typical intact prismatical joint distribution characteristics in bottom plate or the abutment wall selection of the underground chamber and be conducive to apply
The sampling spot of work.
Further, it is described freeze include:
It drills and transfers in sampling spot periphery and freeze medium, wherein array pitch, diameter and depth between Rational choice drilling,
Ensure to be formed uniform closed Frozen Rock and Soil；
It is filled the water into the drilling, is saturated ground water-filling；
Cooling capacity is provided by the medium that freezes, makes in drilling that water congeals into ice and cementing integral with ground.
Further, the medium that freezes is using liquid nitrogen freezing system.
Further, the bore position is at 0.3~0.5m on the outside of the sampling spot；
In freezing process, the Ground freezing in the region 0.5m below the bottom hole of drilling to sub-zero frozen state.
The beneficial effects of the present invention are: a kind of ground sampling side for geotechnical engineering provided in the embodiment of the present application
Method is freezed in advance by range cylindrical joint ground is sampled using freezing system for prismatical joint crack ground, makes water around
Glaciation is simultaneously cementing integral with ground, so that complete and high-intensitive holding sample, guarantees to greatest extent from scene
Cutting or coring obtain the integrality containing Fracture Networks ground；Cooperation is fixed and thermal insulation material avoids and freezes rock sample and transporting
It thaws in the process and collision disturbance causes weak structural face to open rupture, and be processed into before ground defrosting and meet laboratory mark
The sample of object staff cun, provides true and reliable base for prismatical joint ground physical and mechanical experiment and underground excavation stability study
Plinth data and reference frame.Method of the invention is simple, efficient quick, and good practical effect is with a wide range of applications.
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And can be implemented in accordance with the contents of the specification, with presently preferred embodiments of the present invention, detailed description is as follows below.Tool of the invention
Body embodiment is shown in detail by following embodiment.
Specific embodiment
It is that principles and features of the present invention are described below, the given examples are served only to explain the present invention, is not intended to
It limits the scope of the invention.The present invention is more specifically described by way of example in the following passage.According to following explanation and right
Claim, advantages and features of the invention will become apparent from.
It should be noted that it can be directly on another component when component is referred to as " being fixed on " another component
Or there may also be components placed in the middle.When a component is considered as " connection " another component, it, which can be, is directly connected to
To another component or it may be simultaneously present component placed in the middle.When a component is considered as " being set to " another component, it
It can be and be set up directly on another component or may be simultaneously present component placed in the middle.Term as used herein is " vertical
", " horizontal ", "left", "right" and similar statement for illustrative purposes only.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.Term " and or " used herein includes one or more phases
Any and all combinations of the listed item of pass.
The present invention provides a kind of ground sampling methods for geotechnical engineering, comprising:
Addressing selects many places sampling spot with typical intact prismatical joint distribution characteristics；
Mixing, takes out the ground in different sampling spots of the identical equal portions in many places, and is stirred；
Freeze, freezes the ground mixture at the sampling spot；
The ground freezed is cut or is drilled through column core by cutting or drill core.
Further, the mixing further include:
Certain bating liquor is added when being stirred.
It further, further include protecting,
It wraps up and fixes cutting or what is drilled through freeze rock sample；
The rock sample that freezes fixed is placed in thermal insulation separation hot tank.
Further, the protection further include:
By Refrigerated Transport, the thermal insulation separation hot tank is shipped back laboratory.
It further, further include being processed into sample,
Holding is freezed to be processed into the examination for complying with standard and include complete column joint fissure network under the frozen state of rock sample
Sample.
It is further, described to be processed into sample further include:
The sample completed the process is wrapped using plastic foil or rubber band, ruptures or scatters after preventing it from thawing.
Further, further includes: it thaws,
The sample being processed into is thawed in its natural state, flows out its moisture, is restored to presence states, and keep column
The integrality of joint ground；
The addressing includes:
Excavate prismatical joint ground area underground chamber；
There is typical intact prismatical joint distribution characteristics in bottom plate or the abutment wall selection of the underground chamber and be conducive to apply
The sampling spot of work.
Further, it is described freeze include:
It drills and transfers in sampling spot periphery and freeze medium, wherein array pitch, diameter and depth between Rational choice drilling,
Ensure to be formed uniform closed Frozen Rock and Soil；
It is filled the water into the drilling, is saturated ground water-filling；
Cooling capacity is provided by the medium that freezes, makes in drilling that water congeals into ice and cementing integral with ground.
Further, the medium that freezes is using liquid nitrogen freezing system.
Further, the bore position is at 0.3~0.5m on the outside of the sampling spot；
In freezing process, the Ground freezing in the region 0.5m below the bottom hole of drilling to sub-zero frozen state.
The beneficial effects of the present invention are: a kind of ground sampling side for geotechnical engineering provided in the embodiment of the present application
Method is freezed in advance by range cylindrical joint ground is sampled using freezing system for prismatical joint crack ground, makes water around
Glaciation is simultaneously cementing integral with ground, so that complete and high-intensitive holding sample, guarantees to greatest extent from scene
Cutting or coring obtain the integrality containing Fracture Networks ground；Cooperation is fixed and thermal insulation material avoids and freezes rock sample and transporting
It thaws in the process and collision disturbance causes weak structural face to open rupture, and be processed into before ground defrosting and meet laboratory mark
The sample of object staff cun, provides true and reliable base for prismatical joint ground physical and mechanical experiment and underground excavation stability study
Plinth data and reference frame.Method of the invention is simple, efficient quick, and good practical effect is with a wide range of applications.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the present invention in any form；It is all
The those of ordinary skill of the industry can implement the present invention by the above and swimmingly；But all technologies for being familiar with this profession
Personnel without departing from the scope of the present invention, repaired by a little change for being made using disclosed above technology contents
Decorations and the equivalent variations developed, are equivalent embodiment of the invention；Meanwhile all substantial technologicals according to the present invention are to the above reality
The variation, modification and evolution etc. for applying any equivalent variations made by example, still fall within the protection scope of technical solution of the present invention
Within.
Claims (10)
1. a kind of ground sampling method for geotechnical engineering characterized by comprising
Addressing selects many places sampling spot with typical intact prismatical joint distribution characteristics；
Mixing, takes out the ground in different sampling spots of the identical equal portions in many places, and is stirred；
Freeze, freezes the ground mixture at the sampling spot；
The ground freezed is cut or is drilled through column core by cutting or drill core.
2. a kind of ground sampling method for geotechnical engineering according to claim 1, which is characterized in that the mixing is also
Include:
Certain bating liquor is added when being stirred.
3. a kind of ground sampling method for geotechnical engineering according to claim 2, which is characterized in that further include,
Protection,
It wraps up and fixes cutting or what is drilled through freeze rock sample；
The rock sample that freezes fixed is placed in thermal insulation separation hot tank.
4. a kind of ground sampling method for geotechnical engineering according to claim 3, which is characterized in that the protection is also
Include:
By Refrigerated Transport, the thermal insulation separation hot tank is shipped back laboratory.
5. a kind of ground sampling method for geotechnical engineering according to claim 4, which is characterized in that further include processing
At sample,
Holding is freezed to be processed into the sample for complying with standard and include complete column joint fissure network under the frozen state of rock sample.
6. a kind of ground sampling method for geotechnical engineering according to claim 5, which is characterized in that described to be processed into
Sample further include:
The sample completed the process is wrapped using plastic foil or rubber band, ruptures or scatters after preventing it from thawing.
7. a kind of ground sampling method for geotechnical engineering according to claim 6, which is characterized in that further include: solution
Freeze,
The sample being processed into is thawed in its natural state, flows out its moisture, is restored to presence states, and keep prismatical joint
The integrality of ground；
The addressing includes:
Excavate prismatical joint ground area underground chamber；
There is typical intact prismatical joint distribution characteristics in bottom plate or the abutment wall selection of the underground chamber and be conducive to construction
Sampling spot.
8. a kind of ground sampling method for geotechnical engineering as described in any one of claims 1 to 7, which is characterized in that institute
State freeze include:
It drills and transfers in sampling spot periphery and freeze medium, wherein array pitch, diameter and depth between Rational choice drilling, it is ensured that
Form uniformly closed Frozen Rock and Soil；
It is filled the water into the drilling, is saturated ground water-filling；
Cooling capacity is provided by the medium that freezes, makes in drilling that water congeals into ice and cementing integral with ground.
9. a kind of ground sampling method for geotechnical engineering as claimed in claim 8, it is characterised in that: described to freeze medium
Using liquid nitrogen freezing system.
10. a kind of ground sampling method for geotechnical engineering as claimed in claim 9, it is characterised in that: the drilling position
It is set at 0.3~0.5m on the outside of the sampling spot；
In freezing process, the Ground freezing in the region 0.5m below the bottom hole of drilling to sub-zero frozen state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910147413.5A CN109655325A (en) | 2019-02-27 | 2019-02-27 | A kind of ground sampling method for geotechnical engineering |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910147413.5A CN109655325A (en) | 2019-02-27 | 2019-02-27 | A kind of ground sampling method for geotechnical engineering |
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| CN109655325A true CN109655325A (en) | 2019-04-19 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110286024A (en) * | 2019-07-10 | 2019-09-27 | 中国有色金属工业昆明勘察设计研究院有限公司 | Freezing method produces the method for being saturated soft sand undisturbed |
| CN111829926A (en) * | 2020-06-28 | 2020-10-27 | 中国辐射防护研究院 | Radionuclide gas inclusion band-saturation band coupling migration experimental device and method |
| CN113984433A (en) * | 2021-10-29 | 2022-01-28 | 中兵勘察设计研究院有限公司 | Detection equipment for rock and soil component analysis |
-
2019
- 2019-02-27 CN CN201910147413.5A patent/CN109655325A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110286024A (en) * | 2019-07-10 | 2019-09-27 | 中国有色金属工业昆明勘察设计研究院有限公司 | Freezing method produces the method for being saturated soft sand undisturbed |
| CN111829926A (en) * | 2020-06-28 | 2020-10-27 | 中国辐射防护研究院 | Radionuclide gas inclusion band-saturation band coupling migration experimental device and method |
| CN113984433A (en) * | 2021-10-29 | 2022-01-28 | 中兵勘察设计研究院有限公司 | Detection equipment for rock and soil component analysis |
| CN113984433B (en) * | 2021-10-29 | 2024-05-03 | 中兵勘察设计研究院有限公司 | Detection equipment for rock and soil component analysis |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190419 |
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| WD01 | Invention patent application deemed withdrawn after publication |