CN105547953A - Device for measuring permeability coefficient of rock sample - Google Patents
Device for measuring permeability coefficient of rock sample Download PDFInfo
- Publication number
- CN105547953A CN105547953A CN201510899751.6A CN201510899751A CN105547953A CN 105547953 A CN105547953 A CN 105547953A CN 201510899751 A CN201510899751 A CN 201510899751A CN 105547953 A CN105547953 A CN 105547953A
- Authority
- CN
- China
- Prior art keywords
- rock sample
- water
- permeable
- chamber
- top cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000011435 rock Substances 0.000 title claims abstract description 90
- 230000035699 permeability Effects 0.000 title claims abstract description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 238000007789 sealing Methods 0.000 claims abstract description 21
- 239000004575 stone Substances 0.000 claims abstract description 20
- 238000012360 testing method Methods 0.000 claims description 56
- 230000008595 infiltration Effects 0.000 claims description 20
- 238000001764 infiltration Methods 0.000 claims description 20
- 239000012528 membrane Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 5
- 239000004927 clay Substances 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 2
- 238000007689 inspection Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000012956 testing procedure Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention provides a device for measuring permeability coefficient of a rock sample. The device at least comprises a measuring box, and a head water-permeable board and a tail water-permeable board which are located in an inner chamber of the measuring box. The inner chamber of the measuring box is divided by the head water-permeable board and the tail water-permeable board into a water feeding chamber, a rock sample chamber, and a water-permeable chamber in sequence. A water inlet communicates with the water-permeable chamber, and a water outlet communicates with the water-permeable chamber. A wall of the water feeding chamber is equipped with a drain valve communicating with the water feeding chamber. A wall of the rock sample chamber is equipped with a transparent inspection window, the rock sample chamber is internally provided with a waterproof sealing film matching a side surface of a rock sample. The head water-permeable board, the waterproof sealing film, and the tail water-permeable board form a seepage channel. The head and tail water-permeable boards are made of water-permeable stone and elastic sealing strips. A water-permeable system of the water-permeable stone comprises a big hole located in the middle and small holes uniformly dispersed around the big hole in an annular manner, or comprises more than two water-permeable holes which are uniformly dispersed and communicate to each other. The device is simple in structure and accurate in measurement results, and is suitable for a board-shaped rock sample with cracks inside.
Description
Technical field
The present invention relates to a kind of rock sample device for testing permeability coefficient, belong to seepage tester device technical field.
Background technology
Infiltration coefficient is the important physical parameter of of rock mass.How to measure the infiltration coefficient of rock sample accurately, and the process of osmosis of rock sample of analyzing and researching, the multi-scenarios method research for rock mass has great significance.But under long-term operation of nature and artificial construction disturbance condition, be thick with various crack in rock mass, define very complicated seepage environment, the infiltration coefficient of indoor rock sample infiltration coefficient and engineering site rock mass usually has bigger difference.
Existing most of rock sample permeability coefficient tester device is mostly for cylindrical standard rock sample, the infiltration coefficient of rock sample macroscopic view can only be measured, in addition, crack external morphology for rock sample cannot be observed, can not determine that crack is on the infiltrative impact of rock sample, also cannot the infiltration evolution of observation analysis rock sample.
Existing most of permeability test porous disc is the form evenly laying hole, for the permeability test containing crack rock sample, there is the possibility blocking or block seepage channel, has considerable influence to the measurement result of infiltration coefficient.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art and the rock sample device for testing permeability coefficient providing a kind of structure simple, easy to use, practical, can measure the infiltration coefficient of template rock sample.
Realizing the technical scheme that the object of the invention adopts is, a kind of rock sample device for testing permeability coefficient, at least comprise test box, be positioned at stem porous disc and the afterbody porous disc of test box inner chamber, and with the water inlet of test box inner space and water delivering orifice, described test box horizontal positioned, stem porous disc is fixed on the front side of test box inner chamber, afterbody porous disc is fixed on rear side of test box inner chamber, test box inner chamber is divided into intake antrum successively by stem porous disc and afterbody porous disc, rock sample chamber and infiltration water cavity, water inlet is communicated with intake antrum, water delivering orifice is communicated with infiltration water cavity, intake antrum chamber wall is provided with the draw-off valve be communicated with intake antrum, in the chamber wall in rock sample chamber, transparent windows is installed, be provided with the waterproof sealing membrane matched with rock sample side surface in rock sample chamber, the profile of stem porous disc and the profile of afterbody porous disc match with the front end face of rock sample and rear end face respectively, and stem porous disc, waterproof sealing membrane and afterbody porous disc form seepage channel, described stem porous disc and afterbody porous disc are formed by permeable stone with around the elastic sealing strip being fixed on permeable stone side, and the permeable hole system of permeable stone is by being positioned at the macropore at middle part and forming around the aperture be distributed in around macropore or to be uniformly distributed by more than 2 and the permeable hole be interconnected is formed.
Described test box is made up of top cover, base plate, stem top board, afterbody top board, front side board and back side panel, and top cover is provided with the vent valve be communicated with intake antrum.
The side of top cover is provided with 2 with upper top cover stop, and top cover stop is fixed on test box top by top cover stop bolt, and the lower surface of top cover is provided with top cover rubber layer.
Top cover is provided with top cover handle.
Top cover rubber layer is bonded and fixed on the lower surface of top cover.
All transparent windows is installed in the chamber wall of both sides, described rock sample chamber.
Described elastic sealing strip is rubber strip or clay, and described waterproof sealing membrane is polyacrylic water-proof material.
As shown from the above technical solution, rock sample device for testing permeability coefficient provided by the invention, main body lateral arrangement, compared to the infiltration instrument of existing vertical layout, can eliminate the impact of Action of Gravity Field on rock sample internal crack seepage flow situation, test box inner chamber is divided into the intake antrum for intaking successively by stem porous disc and afterbody porous disc, for placing rock sample and carrying out the rock sample chamber of seepage tests and the infiltration water cavity for collecting wandering water, in the chamber wall in rock sample chamber, transparent windows is installed, by infiltration evolution and the rule of transparent windows real-time monitored rock sample, penetration property for rock sample gets more information about, permeability test can be carried out respectively for complete rock sample with containing crack rock sample, by the observation of organic glass observation window and the contrast of measured infiltration coefficient, fully can research and analyse rock sample crack role in process of osmosis, also permeability test can be carried out respectively for different occupied state or containing the rock sample in different occurrences crack, by the observation of organic glass observation window and the contrast of measured infiltration coefficient, fully can research and analyse crack occupied state on the impact of rock sample permeance property or research and analyse the impact of different occurrences crack in rock sample process of osmosis.
In rock sample device for testing permeability coefficient provided by the invention, stem porous disc and afterbody porous disc are formed by permeable stone with around the elastic sealing strip being fixed on permeable stone side, elastic sealing strip closes the gap between permeable stone side and test box inwall, coordinate the top cover rubber layer be positioned on the lower surface of top cover, formed airtight with the multiple tracks elastic sealing layer of rock sample close contact, controlled seepage environment, the waterproof sealing membrane matched with rock sample side surface is provided with in rock sample chamber, the profile of stem porous disc and the profile of afterbody porous disc match with the front end face of rock sample and rear end face respectively, guarantee by stem porous disc, waterproof sealing membrane and afterbody porous disc form seepage channel and fit completely with the rock sample be placed in one, water is made only to enter from rock sample head end and only ooze out from rock sample tail end, water outlet hydraulic pressure is made to remain 0MPa, the accuracy of warranty test parameters obtained, the permeable hole system of permeable stone is by being positioned at the macropore at middle part and forming around the aperture be distributed in around macropore or to be uniformly distributed by more than 2 and the permeable hole be interconnected is formed, and above-mentioned two kinds of structures all can effectively prevent permeable hole system to containing the stop of crack rock sample seepage channel or blocking.
Compared with prior art, rock sample device for testing permeability coefficient structure provided by the invention is simple, easy to use, practical, test result is accurate, is not only applicable to cylindrical standard rock sample, and is applicable to template rock sample that is comparatively identical with actual rock property in physical environment, inner band crack.
Accompanying drawing explanation
Fig. 1 is the structural representation of rock sample device for testing permeability coefficient provided by the invention.
Fig. 2 is the structural representation of stem porous disc.
Fig. 3 is the structural representation of afterbody porous disc.
Wherein, 1-water delivering orifice, 2-fastening bolt, 3-afterbody top board, 4-afterbody porous disc, 5-afterbody rubber strip, 6-transparent windows, 7-top cover stop bolt, 8-top cover stop, 9-top cover handle, 10-top cover rubber layer, 11-vent valve, 12-top cover, 13-stem rubber strip, 14-stem porous disc, 15-intake antrum, 16-test box, 17-draw-off valve, 18-water inlet, 19-stem permeable stone, 20-afterbody permeable stone, 21-macropore, 22-aperture, 23-permeable hole.
Embodiment
Illustrate in detail the present invention below in conjunction with drawings and Examples, content of the present invention is not limited to following examples.
Rock sample device for testing permeability coefficient provided by the invention, its structure as shown in Figure 1, main body is the test box 16 of horizontal positioned and installs stem porous disc 13 wherein and afterbody porous disc 4, test box 16 is by the top cover 12 be connected and fixed by fastening bolt 2, base plate, stem top board, afterbody top board 3, front side board and back side panel are formed, the side of top cover is provided with 2 with upper top cover stop 8, top cover stop 8 is in L-type, be fixed on test box top, the two ends of top cover stop are respectively by top cover stop bolt 7 and top cover 12 and sidewall paneling (stem top board, afterbody top board 3, front side board and back side panel) be connected, the lower surface of top cover is adhesively fixed with top cover rubber layer 10, top cover is provided with top cover handle 9, stem porous disc 13 is fixed on the front side of test box inner chamber, afterbody porous disc 4 is fixed on rear side of test box inner chamber, test box inner chamber is divided into intake antrum 15, rock sample chamber and infiltration water cavity successively by stem porous disc and afterbody porous disc, in front side board and back side panel, transparent windows 6 is all installed, the position of transparent windows 6 is relative with rock sample chamber, and transparent windows 6 is pmma material preferably,
Test box 16 is provided with and the water inlet 18 of its inner space, water delivering orifice 1, draw-off valve 17 and vent valve 11, wherein water inlet 18 is fixed in stem top board, draw-off valve 17 is fixed in front side board, vent valve 11 is fixed in top cover 12, water inlet 18, draw-off valve 17 and vent valve 11 all intake antrum 15 are communicated with, and water delivering orifice 1 to be fixed in afterbody top board and to be communicated with infiltration water cavity;
See Fig. 2, described stem porous disc 14 is formed by stem permeable stone 19 with around the stem rubber strip 13 being fixed on stem permeable stone 19 side, and the permeable hole system of stem permeable stone 19 is by being positioned at the macropore 21 at middle part and forming around the aperture 22 be distributed in around macropore; See Fig. 3, described afterbody porous disc 4 is formed by afterbody permeable stone 20 with around the afterbody rubber strip 5 being fixed on afterbody permeable stone 20 side, and the permeable hole system of afterbody permeable stone 20 is uniformly distributed by more than 2 and the permeable hole 23 be interconnected is formed; The waterproof sealing membrane matched with rock sample side surface is provided with in rock sample chamber, waterproof sealing membrane is essentially the waterproof material be coated on rock sample side surface, preferred gram of water inspires confidence in transparent watertight diaphragm seal (with high-grade acrylic emulsion for base-material, add multiple auxiliary agent, high-performance waterproof paint that filling agent processes through science), the profile of stem porous disc and the profile of afterbody porous disc match with the front end face of rock sample and rear end face respectively, and stem porous disc, waterproof sealing membrane and afterbody porous disc form seepage channel.
Testing procedure and the principle of rock sample device for testing permeability coefficient provided by the invention are:
(1) test rock sample upper surface, lower surface, front surface, rear surface are all brushed transparent watertight diaphragm seal (preferred gram of water inspires confidence in transparent watertight diaphragm seal) and be placed in test box 16 inside, afterbody porous disc 4 and afterbody top board 3 is put near rock sample order, tighten fastening bolt 2, guarantee stem porous disc 13 and afterbody porous disc 4 and rock sample close contact, by top cover 12 as above test box 16, tighten top cover stop bolt 7;
(2) after rock sample installation, close discharge opening 17 valve, open water inlet 18 valve, start water cavity 15 water-filling;
(3) after water-filling completes, by regulating water inlet 18 place hydraulic pressure to test, and the water flow Q (mL/s) of real time record water delivering orifice 1;
(4) because water delivering orifice 1 hydraulic pressure remains 0MPa, therefore the horizontal infiltration coefficient k of rock sample is calculated by water inlet 18 place hydraulic pressure value P;
Wherein, L is rock sample length, and b is rock sample width, and h is rock sample height;
(5) after having tested, open draw-off valve 17, after intake antrum 15 is all emptying, takes out rock sample, complete experiment; By organizing Experimental comparison, fully can understand crack to the infiltrative impact of rock sample more, accurately convenient.
Claims (7)
1. a rock sample device for testing permeability coefficient, at least comprise test box, be positioned at stem porous disc and the afterbody porous disc of test box inner chamber, and with the water inlet of test box inner space and water delivering orifice, it is characterized in that: described test box horizontal positioned, stem porous disc is fixed on the front side of test box inner chamber, afterbody porous disc is fixed on rear side of test box inner chamber, test box inner chamber is divided into intake antrum successively by stem porous disc and afterbody porous disc, rock sample chamber and infiltration water cavity, water inlet is communicated with intake antrum, water delivering orifice is communicated with infiltration water cavity, intake antrum chamber wall is provided with the draw-off valve be communicated with intake antrum, in the chamber wall in rock sample chamber, transparent windows is installed, be provided with the waterproof sealing membrane matched with rock sample side surface in rock sample chamber, the profile of stem porous disc and the profile of afterbody porous disc match with the front end face of rock sample and rear end face respectively, and stem porous disc, waterproof sealing membrane and afterbody porous disc form seepage channel, described stem porous disc and afterbody porous disc are formed by permeable stone with around the elastic sealing strip being fixed on permeable stone side, and the permeable hole system of permeable stone is by being positioned at the macropore at middle part and forming around the aperture be distributed in around macropore or to be uniformly distributed by more than 2 and the permeable hole be interconnected is formed.
2. rock sample device for testing permeability coefficient according to claim 1, is characterized in that: described test box is made up of top cover, base plate, stem top board, afterbody top board, front side board and back side panel, and top cover is provided with the vent valve be communicated with intake antrum.
3. rock sample device for testing permeability coefficient according to claim 2, it is characterized in that: the side of top cover is provided with 2 with upper top cover stop, top cover stop is fixed on test box top by top cover stop bolt, and the lower surface of top cover is provided with top cover rubber layer.
4., according to claim 2 or rock sample device for testing permeability coefficient according to claim 3, it is characterized in that: top cover is provided with top cover handle.
5. rock sample device for testing permeability coefficient according to claim 3, is characterized in that: top cover rubber layer is bonded and fixed on the lower surface of top cover.
6. according to claim 1 or rock sample device for testing permeability coefficient according to claim 3, it is characterized in that: in the chamber wall of both sides, described rock sample chamber, all transparent windows is installed.
7. rock sample device for testing permeability coefficient according to claim 1, is characterized in that: described elastic sealing strip is rubber strip or clay, and described waterproof sealing membrane is polyacrylic water-proof material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510899751.6A CN105547953B (en) | 2015-12-07 | 2015-12-07 | A kind of rock sample device for testing permeability coefficient |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510899751.6A CN105547953B (en) | 2015-12-07 | 2015-12-07 | A kind of rock sample device for testing permeability coefficient |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105547953A true CN105547953A (en) | 2016-05-04 |
| CN105547953B CN105547953B (en) | 2018-07-10 |
Family
ID=55827295
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510899751.6A Active CN105547953B (en) | 2015-12-07 | 2015-12-07 | A kind of rock sample device for testing permeability coefficient |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105547953B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110320149A (en) * | 2019-08-02 | 2019-10-11 | 西南石油大学 | It is a kind of to flow to adjustable irregular rock sample high-pressure osmosis device and test method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233441A (en) * | 2013-04-19 | 2013-08-07 | 河海大学 | Multiple embankment foundation pipeline type piping seepage deformation model and test method |
| CN104122186A (en) * | 2014-08-01 | 2014-10-29 | 山东省水利科学研究院 | Permeation corrosion testing device of flexible permeation-proof material and testing method thereof |
| CN104897539A (en) * | 2015-04-30 | 2015-09-09 | 四川大学 | Horizontal permeameter suitable for soil horizontal contact surface shearing deformation |
-
2015
- 2015-12-07 CN CN201510899751.6A patent/CN105547953B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103233441A (en) * | 2013-04-19 | 2013-08-07 | 河海大学 | Multiple embankment foundation pipeline type piping seepage deformation model and test method |
| CN104122186A (en) * | 2014-08-01 | 2014-10-29 | 山东省水利科学研究院 | Permeation corrosion testing device of flexible permeation-proof material and testing method thereof |
| CN104897539A (en) * | 2015-04-30 | 2015-09-09 | 四川大学 | Horizontal permeameter suitable for soil horizontal contact surface shearing deformation |
Non-Patent Citations (1)
| Title |
|---|
| 邱珍锋: "砂泥岩混合料各向异性渗透特性试验研究", 《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110320149A (en) * | 2019-08-02 | 2019-10-11 | 西南石油大学 | It is a kind of to flow to adjustable irregular rock sample high-pressure osmosis device and test method |
| CN110320149B (en) * | 2019-08-02 | 2021-08-03 | 西南石油大学 | Flow direction adjustable irregular rock sample high-pressure permeation device and testing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105547953B (en) | 2018-07-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110320149B (en) | Flow direction adjustable irregular rock sample high-pressure permeation device and testing method | |
| CN105527384B (en) | A kind of grouting simulation test device and its test method | |
| JP5880981B2 (en) | Water absorption test method and apparatus for concrete surface | |
| CN103398933A (en) | Constant-pressure concrete permeability testing device | |
| CN103471953A (en) | Automatic test system and test method for testing surface capillary water absorption of concrete | |
| JPH07198582A (en) | Water permeation tester and method of inspecting water channel | |
| CN105806766A (en) | Flexible wall permeameter capable of measuring volume changes | |
| CN204422525U (en) | High-temperature high pressure water mudding performance test evaluating apparatus | |
| CN110672488A (en) | Experimental device for influence of seepage pressure on rock-soil strength and ground stress on rock-soil permeability | |
| CN108918390A (en) | The device and method of mud film forming and measurement mud film amounts of consolidation, air inflow | |
| CN206906209U (en) | A kind of radial penetration experimental provision for being used to evaluate soil body radial penetration characteristic | |
| CN103061321B (en) | Cone penetrometer for evaluating penetration property of unsaturated soil | |
| CN205607820U (en) | Flexible wall infiltration appearance that measurable body becomes | |
| CN102645395A (en) | Diaphragm wall permeability tester | |
| CN208603826U (en) | A kind of denitrification Culture in situ device | |
| CN106033046A (en) | A soil saturated hydraulic conductivity automatic measuring apparatus | |
| CN108801875B (en) | Device and method for demonstrating rainfall infiltration of unsaturated soil adjacent to different types transversely | |
| CN104819924A (en) | Instrument and test method for simulating underwater tunnel concrete water pressure penetration test | |
| CN110487699A (en) | A kind of experimental rig and test method of pervious concrete infiltration coefficient | |
| CN105547953A (en) | Device for measuring permeability coefficient of rock sample | |
| CN109282783A (en) | A kind of concrete carbonization depth original position damage-free measuring apparatus and method | |
| CN205719870U (en) | Original position soil rainfall infiltration measurement apparatus | |
| CN109030290B (en) | Test platform for salt migration in underground water under variable water head condition | |
| CN207470190U (en) | It simulates slurry shield excavation face mud film forming and measures the device of mud film infiltration coefficient | |
| CN205280546U (en) | Rock specimen osmotic coefficient testing arrangement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |