CN109975169A - A kind of country rock gas permeability coefficient test method - Google Patents
A kind of country rock gas permeability coefficient test method Download PDFInfo
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- CN109975169A CN109975169A CN201711461071.1A CN201711461071A CN109975169A CN 109975169 A CN109975169 A CN 109975169A CN 201711461071 A CN201711461071 A CN 201711461071A CN 109975169 A CN109975169 A CN 109975169A
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- pressure
- air pressure
- permeability coefficient
- gas permeability
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N7/00—Analysing materials by measuring the pressure or volume of a gas or vapour
- G01N7/10—Analysing materials by measuring the pressure or volume of a gas or vapour by allowing diffusion of components through a porous wall and measuring a pressure or volume difference
Abstract
The invention belongs to Nuclear waste disposal technical fields, and in particular to a kind of country rock gas permeability coefficient test method；The purpose of the present invention is, for prior art deficiency, a kind of gas permeability coefficient for testing high level radioactive waste repository country rock is provided, key parameter is provided for Hlw Geological Repository safety evaluation, environmental impact assessment, the country rock gas permeability coefficient test method being of great significance is evaluated in the design and long-term safety to Hlw Geological Repository；The technical scheme is that a kind of country rock gas permeability coefficient test method, realizes and is based on a kind of existing triaxial apparatus: the following steps are included: step 1, sample are installed；Step 2, confining pressure load；Step 3, airtight test；Step 4, air pressure-loading；Step 5, data processing.
Description
Technical field
The invention belongs to Nuclear waste disposal technical fields, and in particular to a kind of country rock gas permeability coefficient test method.
Background technique
High-level waste is the inevitable outcome of nuclear power industry, is that a kind of radioactivity is strong, toxicity is big, nucleic half-life period is long and sends out
The special waste of heat.With the rapid development of China's nuclear industry, the processing and disposition of high-level waste have become one it is great
Safety and environmental issue are to ensure that the important leverage of China's nuclear industry sustainable development.
The safe disposal of high-level waste is exactly that it is carried out abundant, reliable permanent sequestration, and isolation time with biosphere
More than 10,000 years.Generally acknowledged safe and reliable and technically feasible method is deep geologic disposal concept at present, i.e., apart from earth's surface
In the geologic body of deep about 500~1000m, by engineering barrier (waste body, packing container and buffering/backfilling material etc.) and naturally
Barrier (country rock) is allowed to permanently be isolated with the living environment of the mankind.The underground engineering of this disposition high-level waste is commonly referred to as height and puts
Waste geological disposal library.
Radioactive waste geological disposal has higher requirement to the permeance property of country rock.In Hlw Geological Repository
In, the burn into water and organic matter of dedicated waste tanks are gone bad etc. by nuclear radiation, microorganism can produce a large amount of gas.The production of gas
Life can cause barometric gradient to increase and accelerate the migration of water and the movement of nucleic, and local gas accumulation may also can generate greatly
Air pressure and puncture padded coaming, destroy natural barrier (country rock) globality, influence the security performance of entire repository system.Cause
This, tests the gas permeability coefficient of high level radioactive waste repository country rock, can provide for disposition library safety evaluation, environmental impact assessment
Essential basic data, design and long-term safety evaluation to Hlw Geological Repository are of great significance.
Summary of the invention
The object of the present invention is in view of the shortcomings of the prior art, provide a kind of gas for testing high level radioactive waste repository country rock
Infiltration coefficient provides key parameter for Hlw Geological Repository safety evaluation, environmental impact assessment, to high-level waste geology
The country rock gas permeability coefficient test method being of great significance is evaluated in the design and long-term safety for disposing library.
The technical scheme is that
A kind of country rock gas permeability coefficient test method is realized and is based on a kind of existing triaxial apparatus: the following steps are included:
Step 1, sample installation
(1) natural tight rock is chosen, and sample is processed into cylinder, measures and records the diameter and height of sample 13
Degree；
(2) after installing sample 13 with high-performance sealed hose, the bottom in pressure chamber 7 is fixed in metal hose clamp
On seat 11, high-permeability metal sintered meshwork 12 is laid respectively on the upper and lower top of the sample of sealant leather hose；
(3) seaming chuck 14 is loaded in the top setting of the high-permeability metal sintered meshwork 12 on upper top, and connects and is pressed in load
Exhaust line connector 15 on first 14, packaged pressure chamber 7, fixed loading frame 10 and make its with axially loaded pressure head 9 just
Contact；
Step 2, confining pressure load
(4) 7 inlet valve 16 of pressure chamber and venthole 8 are opened, water pump is started, is filled the water from sink 4 to pressure chamber 7, until
After filling it up with, inlet valve 16 is closed, is switched off the pump, closes venthole 8；
(5) confining pressure inlet valve 17 is opened, confining pressure loader 2 is opened, load confining pressure and stablizes it in predetermined value Pc=
10000kPa, stable time are no less than 30min；
Step 3, airtight test
(6) air pressure-loading device 3 is opened, atmospheric pressure value 1900kPa is loaded, it maintains 3 atmospheric pressure value of air pressure-loading device constant, opens
Air intake valve 18 observes air pressure change curve, until 3 gas body of air pressure-loading device is kept when atmospheric pressure value reaches 1900kPa again
Product it is constant, open outlet valve 19, observe air pressure change curve, calculation permeability coefficient, when gas permeability be less than E-19 and when
Between more than 35min when, terminate instrument airtight test；
Step 4, air pressure-loading
(7) under the conditions of air-tightness is good, load air pressure to predetermined value P0, maintain 3 gas volume V of air pressure-loading device0No
Become, slowly opens outlet valve 19, measure；
Step 5, data processing
(8) measurement air pressure changes with time, P1And P2Respectively t during air pressure change1And t2The load of moment sample
Atmospheric pressure value records and saves test data；
(9) gas permeability coefficient is calculated using formula (1)
K in formulagFor gas permeability coefficient, m2, μgFor Viscosity Factor of Gas, Pas, A specimen cross sectional area, m2, V0For
Gas volume, m3, paFor average gas pressure,Pa, H are specimen height, m, patmFor atmospheric pressure, Pa, Δ p are air pressure
Drop, Δ p=P1-P2, Pa, Δ t are time interval, Δ t=t2-t1, s.
The beneficial effects of the present invention are:
(1) a kind of country rock gas permeability coefficient test method provided by the invention, including sample installation, airtight test,
The overall processes such as confining pressure and air pressure-loading and data processing, test method is simple and reliable, and specimen enclosure effect is good, and data test is fast,
Experimental test is more efficient；
(2) a kind of country rock gas permeability coefficient test method provided by the invention, it is possible to provide high confining pressure condition can effectively subtract
The additional amount of few sample outer wall gas " slip-stream ", measurement result are more accurate.
Detailed description of the invention
Fig. 1 is a kind of experimental rig triaxial apparatus schematic diagram of country rock gas permeability coefficient test method of the invention；
Fig. 2 is a kind of specimen enclosure area layout drawing of country rock gas permeability coefficient test method of the invention；
Fig. 3 is a kind of load pedestal position layout drawing of country rock gas permeability coefficient test method of the invention；
Specific embodiment
The present invention is further introduced with embodiment with reference to the accompanying drawing:
As shown in Figures 1 to 3, a kind of test device of country rock gas permeability coefficient test method provided by the present invention is main
It include: data collection system 1, confining pressure loader 2, air pressure-loading device 3, sink 4, load pedestal position 5, specimen enclosure area 6, pressure
Power room 7, venthole 8, axially loaded pressure head 9, loading frame 10, pedestal 11, sintered metal mesh 12, sample 13, seaming chuck 14, row
Tracheae wire terminal 15, inlet valve 16, confining pressure inlet valve 17, air intake valve 18, outlet valve 19.
A kind of country rock gas permeability coefficient test method, comprising the following steps:
Step 1, sample installation
(1) natural tight rock is chosen, and sample is processed into cylinder, measures and records the diameter and height of sample 13
Degree；
(2) after installing sample 13 with high-performance sealed hose, the bottom in pressure chamber 7 is fixed in metal hose clamp
On seat 11, high-permeability metal sintered meshwork 12 is laid respectively on the upper and lower top of the sample of sealant leather hose；
(3) seaming chuck 14 is loaded in the top setting of the high-permeability metal sintered meshwork 12 on upper top, and connects and is pressed in load
Exhaust line connector 15 on first 14, packaged pressure chamber 7, fixed loading frame 10 and make its with axially loaded pressure head 9 just
Contact；
Step 2, confining pressure load
(4) 7 inlet valve 16 of pressure chamber and venthole 8 are opened, water pump is started, is filled the water from sink 4 to pressure chamber 7, until
After filling it up with, inlet valve 16 is closed, is switched off the pump, closes venthole 8；
(5) confining pressure inlet valve 17 is opened, confining pressure loader 2 is opened, load confining pressure and stablizes it in predetermined value Pc=
10000kPa, stable time are no less than 30min；
Step 3, airtight test
(6) air pressure-loading device 3 is opened, atmospheric pressure value 1900kPa is loaded, it maintains 3 atmospheric pressure value of air pressure-loading device constant, opens
Air intake valve 18 observes air pressure change curve, until 3 gas body of air pressure-loading device is kept when atmospheric pressure value reaches 1900kPa again
Product it is constant, open outlet valve 19, observe air pressure change curve, calculation permeability coefficient, when gas permeability be less than E-19 and when
Between more than 35min when, terminate instrument airtight test；
Step 4, air pressure-loading
(7) under the conditions of air-tightness is good, load air pressure to predetermined value P0, maintain 3 gas volume V of air pressure-loading device0No
Become, opens outlet valve 19, measure；
Step 5, data processing
(8) measurement air pressure changes with time, P1And P2Respectively t during air pressure change1And t2The load of moment sample
Atmospheric pressure value records and saves test data；
(9) gas permeability coefficient is calculated using formula (1)
K in formulagFor gas permeability coefficient, m2, μgFor Viscosity Factor of Gas, Pas, A specimen cross sectional area, m2, V0For
Gas volume, m3, paFor average gas pressure,Pa, H are specimen height, m, patmFor atmospheric pressure, Pa, Δ p are air pressure
Drop, Δ p=P1-P2, Pa, Δ t are time interval, Δ t=t2-t1, s.
Embodiment:
Step 1, sample installation
(1) choose natural tight rock, and sample be processed into cylinder, measure and record sample 13 diameter 50mm and
Height 25mm；
(2) after installing sample 13 with high-performance sealed hose, the bottom in pressure chamber 7 is fixed in metal hose clamp
On seat 11, high-permeability metal sintered meshwork 12 is laid respectively on the upper and lower top of the sample of sealant leather hose；
(3) seaming chuck 14 is loaded in the top setting of the high-permeability metal sintered meshwork 12 on upper top, and connects and is pressed in load
Exhaust line connector 15 on first 14, packaged pressure chamber 7, fixed loading frame 10 and make its with axially loaded pressure head 9 just
Contact；
Step 2, confining pressure load
(4) 7 inlet valve 16 of pressure chamber and venthole 8 are opened, water pump is started, is filled the water from sink 4 to pressure chamber 7, until
After filling it up with, inlet valve 16 is closed, is switched off the pump, closes venthole 8；
(5) confining pressure inlet valve 17 is opened, confining pressure loader 2 is opened, load confining pressure and stablizes it in predetermined value
10000kPa stablizes time 50min；
Step 3, airtight test
(6) air pressure-loading device 3 is opened, load atmospheric pressure value is 1900kPa, keeps 3 atmospheric pressure value of air pressure-loading device constant, opens
Air intake valve 18 observes air pressure change curve, until opening outlet valve 19 when atmospheric pressure value reaches 1900kPa again, observes gas
Press change curve, calculation permeability coefficient, check device air-tightness；
Step 4, air pressure-loading
(7) under the conditions of air-tightness is good, load air pressure to 1000~1800kPa of predetermined value maintains air pressure-loading device 3
Gas volume V0It is constant, outlet valve 19 is opened, is measured；
Step 5, data processing
(8) measurement air pressure changes with time, P1And P2Respectively t during air pressure change1And t2The load of moment sample
Atmospheric pressure value records and saves test data；
(9) gas permeability coefficient is calculated using formula (1)
Calculated result: gas permeability coefficient 10-18m2。
Claims (1)
1. a kind of country rock gas permeability coefficient test method is realized and is based on a kind of existing triaxial apparatus, it is characterised in that: including
Following steps:
Step 1, sample installation
(1) natural tight rock is chosen, and sample is processed into cylinder, measures and records the diameter and height of sample 13；
(2) after installing sample (13) with high-performance sealed hose, the bottom in pressure chamber (7) is fixed in metal hose clamp
On seat (11), high-permeability metal sintered meshwork (12) are laid respectively on the upper and lower top of the sample of sealant leather hose；
(3) seaming chuck (14) are loaded in the top setting of the high-permeability metal sintered meshwork (12) on upper top, and connects and is pressed in load
Exhaust line connector (15) on head (14), packaged pressure chamber (7), fixed loading frame (10) simultaneously make itself and axially loaded pressure
Head (9) just contacts；
Step 2, confining pressure load
(4) pressure chamber (7) inlet valve (16) and venthole (8) are opened, water pump is started, is infused from sink (4) to pressure chamber (7)
Water is closed venthole (8) until closing inlet valve (16), switching off the pump after filling it up with；
(5) confining pressure inlet valve (17) are opened, opened confining pressure loader (2), load confining pressure and stablize it in predetermined value Pc=
10000kPa, stable time are no less than 30min；
Step 3, airtight test
(6) open air pressure-loading device (3), load atmospheric pressure value 1900kPa, maintain air pressure-loading device (3) atmospheric pressure value it is constant, open into
Air valve (18) observes air pressure change curve, until 3 gas body of air pressure-loading device is kept when atmospheric pressure value reaches 1900kPa again
Product it is constant, open outlet valve (19), observe air pressure change curve, calculation permeability coefficient, to gas permeability be less than E-19 and
When time is more than 35min, terminate instrument airtight test；
Step 4, air pressure-loading
(7) under the conditions of air-tightness is good, load air pressure to predetermined value P0, maintain 3 gas volume V of air pressure-loading device0It is constant,
Outlet valve (19) slowly are opened, are measured；
Step 5, data processing
(8) measurement air pressure changes with time, P1And P2Respectively t during air pressure change1And t2The load air pressure of moment sample
Value, records and saves test data；
(9) gas permeability coefficient is calculated using formula (1)
K in formulagFor gas permeability coefficient, m2, μgFor Viscosity Factor of Gas, Pas, A specimen cross sectional area, m2, V0For gas
Volume, m3, paFor average gas pressure,Pa, H are specimen height, m, patmFor atmospheric pressure, Pa, Δ p are air pressure drop, Δ
P=P1-P2, Pa, Δ t are time interval, Δ t=t2-t1, s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711461071.1A CN109975169A (en) | 2017-12-28 | 2017-12-28 | A kind of country rock gas permeability coefficient test method |
Applications Claiming Priority (1)
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| CN201711461071.1A CN109975169A (en) | 2017-12-28 | 2017-12-28 | A kind of country rock gas permeability coefficient test method |
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| CN109975169A true CN109975169A (en) | 2019-07-05 |
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ID=67074833
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| CN201711461071.1A Pending CN109975169A (en) | 2017-12-28 | 2017-12-28 | A kind of country rock gas permeability coefficient test method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111610315A (en) * | 2020-07-03 | 2020-09-01 | 核工业北京地质研究院 | Bentonite building block single seam healing effect testing device and method |
| CN111610313A (en) * | 2020-07-03 | 2020-09-01 | 核工业北京地质研究院 | Device and method for testing combined joint healing effect of buffer material building blocks |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103063557A (en) * | 2012-12-31 | 2013-04-24 | 河海大学 | Device and method for detecting gas permeability of rock |
| CN103163057A (en) * | 2013-03-18 | 2013-06-19 | 河海大学 | Testing device and measuring and calculating method for gas permeability of compact rock material |
| CN103207138A (en) * | 2013-04-08 | 2013-07-17 | 河海大学 | Method for combined measurement of permeability and porosity of dense rock under dynamic confining pressure |
| CN103674800A (en) * | 2012-09-03 | 2014-03-26 | 中国石油化工股份有限公司 | Measuring method for permeability of low-permeability rock sample, and measuring device |
| CN103913409A (en) * | 2014-03-31 | 2014-07-09 | 河海大学 | Method for measuring gas permeation coefficient of compact rock under three dimensional stress condition |
| CN205015254U (en) * | 2015-08-28 | 2016-02-03 | 北京艾迪佳业技术开发有限公司 | Ultralow permeability measuring apparatu |
| CN206440589U (en) * | 2017-01-05 | 2017-08-25 | 中国电建集团华东勘测设计研究院有限公司 | A kind of country rock initial infiltration coefficient test structure |
| KR20170129341A (en) * | 2016-05-16 | 2017-11-27 | 동아대학교 산학협력단 | Broadband rock permeability measurement system |
-
2017
- 2017-12-28 CN CN201711461071.1A patent/CN109975169A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103674800A (en) * | 2012-09-03 | 2014-03-26 | 中国石油化工股份有限公司 | Measuring method for permeability of low-permeability rock sample, and measuring device |
| CN103063557A (en) * | 2012-12-31 | 2013-04-24 | 河海大学 | Device and method for detecting gas permeability of rock |
| CN103163057A (en) * | 2013-03-18 | 2013-06-19 | 河海大学 | Testing device and measuring and calculating method for gas permeability of compact rock material |
| CN103207138A (en) * | 2013-04-08 | 2013-07-17 | 河海大学 | Method for combined measurement of permeability and porosity of dense rock under dynamic confining pressure |
| CN103913409A (en) * | 2014-03-31 | 2014-07-09 | 河海大学 | Method for measuring gas permeation coefficient of compact rock under three dimensional stress condition |
| CN205015254U (en) * | 2015-08-28 | 2016-02-03 | 北京艾迪佳业技术开发有限公司 | Ultralow permeability measuring apparatu |
| KR20170129341A (en) * | 2016-05-16 | 2017-11-27 | 동아대학교 산학협력단 | Broadband rock permeability measurement system |
| CN206440589U (en) * | 2017-01-05 | 2017-08-25 | 中国电建集团华东勘测设计研究院有限公司 | A kind of country rock initial infiltration coefficient test structure |
Non-Patent Citations (2)
| Title |
|---|
| 马利科 等: "围压对北山花岗岩渗透特性的影响", 《第四届废物地下处置学术研讨会论文集》 * |
| 高玉峰: "北山地下水对膨润土力学和渗气特性影响研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111610315A (en) * | 2020-07-03 | 2020-09-01 | 核工业北京地质研究院 | Bentonite building block single seam healing effect testing device and method |
| CN111610313A (en) * | 2020-07-03 | 2020-09-01 | 核工业北京地质研究院 | Device and method for testing combined joint healing effect of buffer material building blocks |
| CN111610313B (en) * | 2020-07-03 | 2022-07-22 | 核工业北京地质研究院 | Buffer material building block combination joint healing effect testing device and method |
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Application publication date: 20190705 |
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