CN109946214A - Rock permeability saturation testing device and infiltration, saturation testing method - Google Patents
Rock permeability saturation testing device and infiltration, saturation testing method Download PDFInfo
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- CN109946214A CN109946214A CN201910288196.1A CN201910288196A CN109946214A CN 109946214 A CN109946214 A CN 109946214A CN 201910288196 A CN201910288196 A CN 201910288196A CN 109946214 A CN109946214 A CN 109946214A
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- 239000011435 rock Substances 0.000 title claims abstract description 161
- 238000012360 testing method Methods 0.000 title claims abstract description 124
- 230000035699 permeability Effects 0.000 title claims abstract description 83
- 238000001764 infiltration Methods 0.000 title abstract description 10
- 230000008595 infiltration Effects 0.000 title abstract description 10
- 238000010998 test method Methods 0.000 claims abstract description 10
- 230000008859 change Effects 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims description 80
- 238000000034 method Methods 0.000 claims description 14
- 210000000416 exudates and transudate Anatomy 0.000 claims description 9
- 238000005516 engineering process Methods 0.000 abstract description 4
- 229920006395 saturated elastomer Polymers 0.000 description 8
- 230000009286 beneficial effect Effects 0.000 description 5
- 239000012530 fluid Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 239000012466 permeate Substances 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000011105 stabilization Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009533 lab test Methods 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 238000009738 saturating Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 241000521257 Hydrops Species 0.000 description 1
- 206010030113 Oedema Diseases 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
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- 230000005484 gravity Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009440 infrastructure construction Methods 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
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- 239000002689 soil Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses rock permeability saturation testing device and infiltrations, saturation testing method, are related to rock test experimental instrument technology.A kind of rock permeability saturation testing device, permeability test and saturation testing for rock sample.Comprising: which the both ends of containing tube are provided with opening.First piston and second piston are movably disposed in containing tube and containing tube are divided into the first set section and the second set section, and can move along containing tube to change the volume of the first set section and the second set section.The both ends of communicating pipe are connected to the first set section and the second set section, and the first shut-off valve is provided on communicating pipe.First set section is for accommodating rock sample.A kind of permeability test method and a kind of saturation testing method, have been all made of above-mentioned rock permeability saturation testing device.Rock permeability saturation testing device provided by the invention can complete In Rock Seepage Tests and two kinds of rock saturation testing tests, and it is convenient to provide for testing crew.
Description
Technical field
The present invention relates to rock test experimental instrument technologies, in particular to rock permeability saturation testing device
And infiltration, saturation testing method.
Background technique
With the increasingly propulsion of China's large-scale infrastructure construction and deep resource energy extraction, occur a series of
Underground rock project, such as traffic tunnel, water power underground power house, paint storage library, mine working.These engineerings are reliably obtained to open
Digging with the change of rock mass saturation state in operational process is the important link for guaranteeing engineering safety and engineering being pushed to go on smoothly.It seeps
Saturating coefficient or permeability are to be full of the important indicator of flowing complexity of the fluid in hole in rock for evaluating, at present
The acquisition of infiltration coefficient mainly has on-the-spot test and two kinds of laboratory test, since the former cost is too high and not easy to operate, indoor examination
Testing is most common Rock And Soil Penetration Signature means of testing.
However, the process of osmosis of rock generally requires experience longer time, especially to the rock of low-permeability, directly
The time that permeability test generally requires a couple of days or even several weeks is carried out to rock.Therefore, common processing method is in advance by sample
Saturation, the test period can effectively be shortened by carrying out permeability test on the basis of saturated sample.Laboratory is commonly square at present
Method is mainly the method for vacuumizing saturation.When using vacuumizing saturated sample, sample is immersed in vacuum pressure tank pumping at least 4
Hour, maintain 100kPa until without bubble evolution.Since rock is immersed in water in pressurized tank, internal gas energy
No be fully drained is studied always personnel's query.
Furthermore more and more laboratory tests need to consider rock in the physico-mechanical properties of saturation state, to rock into
The process of row saturation is also the process that rock itself is permeated, however, fluid is that there are dominant paths in the intracorporal circulation of rock
, the saturation testing for rock mass needs to consider the degree that sample is integrally filled with a fluid, and under the effect of gravity, fluid passes through
Dominant paths ooze out rock mass, and the result obtained does not have representativeness, therefore carries out needing to reduce advantage when the saturation of rock sample
Influence of the path to saturated result.
Therefore, it for saturation-permeability test of current rock, needs the new method of one kind and had both been avoided that rock mass internal advantages
The influence of permeation pathway, and rock sample can be carried out fully saturated.
Summary of the invention
The purpose of the present invention is to provide a kind of rock permeability saturation testing devices, can complete the infiltration of rock sample
Test, while can also complete two kinds of rock tests of saturation testing.
The present invention provides a kind of technical solution:
A kind of rock permeability saturation testing device, permeability test and saturation testing for rock sample.
The rock permeability saturation testing device includes:
Containing tube, the both ends of the containing tube are provided with the opening being connected to inside the containing tube.
First piston and second piston, the first piston and the second piston are movably disposed in the accommodating
It is divided into the first set section and the second set section, the first piston and the equal energy of the second piston in the middle part of pipe and by the containing tube
It is moved along the extending direction of the containing tube to change the volume of first set section and second set section.
Communicating pipe, the both ends of the communicating pipe are connected to the middle part of first set section and described second and accommodate
Section, and be connected to first set section and second set section, the first shut-off valve is provided on the communicating pipe.
Wherein, first set section is for accommodating the rock sample, and the rock sample is made to be located at described the
End and the communicating pipe of one set section far from second set section are connected between the end of first set section.
Further, the first piston and second piston interval setting, and first set section is located at institute
Side of the first piston far from the second piston is stated, it is living far from described first that second set section is located at the second piston
The side of plug.
Further, the rock permeability saturation testing device further includes pressure gauge, and the pressure gauge is connected to described
Two set sections, and the pressure gauge is used to detect and show the pressure of the second set section internal liquid.
Further, the rock permeability saturation testing device further includes containing pipe, and the pipe that contains is connected to described
The end of one set section, and pipe and first set section of containing is connected by the outlet.
Further, the rock permeability saturation testing device further includes graduated cylinder, the graduated cylinder be connected to it is described contain pipe,
And the one end of pipe far from first set section is contained described in being located at, the extending direction of the graduated cylinder prolongs with the containing tube
It is identical to stretch direction.
Further, the rock permeability saturation testing device further includes volume, and the volume passes through conduit and institute
It states the second set section to be connected, the second shut-off valve is provided on the conduit.
Compared with prior art, the beneficial effect of rock permeability saturation testing device provided by the invention is:
Rock permeability saturation testing device provided by the invention can provide pressure to liquid by piston when just putting, so that
Liquid rapidly permeates rock sample, and then quickly completes the permeability test for rock sample, improves the rate of test.
In addition, rock permeability saturation testing device can be placed upside down, liquid is made to be located at the lower section of rock sample at this time, and lead to simultaneously
It crosses piston and provides pressure to liquid, water is penetrated into rock sample under pressure, realize the fully saturated of rock, and then also
Rock sample saturation testing can be carried out by the device.I.e. the present invention provides a kind of rock permeability saturation testing devices, both
It can be carried out the permeability test of rock sample, while also can be carried out the saturation testing of rock sample, and its structure is simple, operation letter
It is single, it is at low cost.
Another object of the present invention is to provide a kind of permeability test methods, and which employs above-mentioned rock permeability saturation testings
Device.
The present invention provides a kind of technical solution:
A kind of permeability test method uses rock permeability saturation testing device.The rock permeability saturation testing device
Include:
Containing tube, the both ends of the containing tube are provided with the opening being connected to inside the containing tube.
First piston and second piston, the first piston and the second piston are movably disposed in the accommodating
It is divided into the first set section and the second set section, the first piston and the equal energy of the second piston in the middle part of pipe and by the containing tube
It is moved along the extending direction of the containing tube to change the volume of first set section and second set section.
Communicating pipe, the both ends of the communicating pipe are connected to the middle part of first set section and described second and accommodate
Section, and be connected to first set section and second set section, the first shut-off valve is provided on the communicating pipe.
Wherein, first set section is for accommodating the rock sample, and the rock sample is made to be located at described the
End and the communicating pipe of one set section far from second set section are connected between the end of first set section.
The described method includes:
The rock permeability saturation testing device is just being put, so that first set section is located at second set section
Lower section.
Rock sample is put into first set section, and rock sample is made to be located at first set section far from institute
The end and the communicating pipe for stating the second set section are connected between the end of first set section.
First shut-off valve is opened, and inputs liquid into second set section.
The opening for closing second set section end, moves up the second piston.
After being filled with the liquid of predetermined amount in first set section, first shut-off valve is closed, and move down institute
State first piston.
It persistently moves the first piston and makes the pressure of the first set section internal liquid constant, until the rock
Liquid body exudate dropleting speed keeps stablizing below stone sample.
Further, described to open first shut-off valve, and inputted before liquid step into second set section,
The method also includes:
The first piston is moved to equal with the end for being connected to first set section communicating pipe.
Compared with prior art, the beneficial effect of permeability test method provided by the invention and above-mentioned rock permeability, which are saturated, tries
The beneficial effect of experiment device compared with the existing technology is identical, and details are not described herein.
Another object of the present invention is to provide a kind of saturation testing methods, and which employs above-mentioned rock permeability saturations to try
Experiment device.
The present invention provides a kind of technical solution:
A kind of saturation testing method uses rock permeability saturation testing device.The rock permeability saturation testing device
Include:
Containing tube, the both ends of the containing tube are provided with the opening being connected to inside the containing tube.
First piston and second piston, the first piston and the second piston are movably disposed in the accommodating
It is divided into the first set section and the second set section, the first piston and the equal energy of the second piston in the middle part of pipe and by the containing tube
It is moved along the extending direction of the containing tube to change the volume of first set section and second set section.
Communicating pipe, the both ends of the communicating pipe are connected to the middle part of first set section and described second and accommodate
Section, and be connected to first set section and second set section, the first shut-off valve is provided on the communicating pipe.
Wherein, first set section is for accommodating the rock sample, and the rock sample is made to be located at described the
End and the communicating pipe of one set section far from second set section are connected between the end of first set section.
The described method includes:
The rock permeability saturation testing device is placed upside down, is held so that first set section is located at described second
It sets above section.
Rock sample is put into first set section, and rock sample is made to be located at first set section far from institute
The end and the communicating pipe for stating the second set section are connected between the end of first set section.
First shut-off valve is opened, and inputs liquid into second set section.
The opening for closing second set section end, moves down the second piston.
After being filled with the liquid of predetermined amount in first set section, first shut-off valve is closed, and move up institute
State first piston.
It persistently moves the first piston and makes the pressure of the first set section internal liquid constant, until rock tries
Liquid body exudate above sample.
Further, described to open first shut-off valve, and inputted before liquid step into second set section,
The method also includes:
The first piston is moved to equal with the end for being connected to first set section communicating pipe.
Compared with prior art, the beneficial effect of saturation testing method provided by the invention and above-mentioned rock permeability, which are saturated, tries
The beneficial effect of experiment device compared with the existing technology is identical, and details are not described herein.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described.It should be appreciated that the following drawings illustrates only certain embodiments of the present invention, therefore it is not construed as pair
The restriction of range.It for those of ordinary skill in the art, without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the structural schematic diagram for the rock permeability saturation testing device that the embodiment of the present invention provides；
Fig. 2 is the flow chart for the permeability test method that the embodiment of the present invention provides；
Fig. 3 is the flow chart for the saturation testing method that the embodiment of the present invention provides.
Icon: 10- rock permeability saturation testing device；11- rock sample；100- containing tube；The first set section of 110-；
The second set section of 120-；210- first piston；220- second piston；300- communicating pipe；The first shut-off valve of 310-；400- pressure
Meter；500- contains pipe；510- graduated cylinder；600- volume；610- conduit；The second shut-off valve of 620-.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described.Obviously, described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it is to be understood that, term " on ", "lower", "inner", "outside", "left", "right" etc. indicate
Orientation or positional relationship be based on the orientation or positional relationship shown in the drawings or the invention product using when usually put
Orientation or positional relationship or the orientation or positional relationship that usually understands of those skilled in the art, be merely for convenience of retouching
It states the present invention and simplifies description, rather than the equipment of indication or suggestion meaning or element must have a particular orientation, with specific
Orientation construction and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " etc. are only used for distinguishing description, it is not understood to indicate or imply relatively important
Property.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, " setting ", " even
Connect " etc. terms shall be understood in a broad sense, for example, " connection " may be a fixed connection, may be a detachable connection, or integrally connect
It connects；It can be mechanical connection, be also possible to be electrically connected；It can be and be directly connected to, can also be indirectly connected with by intermediary, it can
To be the connection inside two elements.For the ordinary skill in the art, can understand as the case may be above-mentioned
The concrete meaning of term in the present invention.
With reference to the accompanying drawing, detailed description of the preferred embodiments.
Embodiment
Referring to Fig. 1, providing a kind of rock permeability saturation testing device 10 in the present embodiment, rock sample can be used for
11 permeability test and saturation testing.That is, the rock permeability saturation testing device 10 provided in the present embodiment can complete rock infiltration
Test and two kinds of rock saturation testing tests thoroughly, so that carrying out the testing crew of In Rock Seepage Tests and rock saturation testing
Replacement test equipment is not needed when carrying out permeability test and saturation testing to rock sample 11 can be completed two kinds of tests, to behaviour
It is greatly convenient to provide as personnel.
Wherein, rock permeability saturation testing device 10 includes containing tube 100, first piston 210, second piston 220, connection
Pipe 300, pressure gauge 400 contain pipe 500, graduated cylinder 510, volume 600, conduit 610, the first shut-off valve 310 and the second shut-off valve
620。
There are the space for accommodating liquid and rock sample 11, also, the two of containing tube 100 inside containing tube 100
End is provided with the opening for being connected to 100 inner space of containing tube, can be put liquid and rock sample 11 by two openings
It is placed in inside containing tube 100.In the present embodiment, volume 600 by conduit 610 connect with containing tube 100, and opened by one
Mouth makes volume 600, conduit 610 be connected with containing tube 100, and the second shut-off valve 620 is provided on conduit 610.The
Two shut-off valves 620 can selectively turn on or be truncated conduit 610.Volume 600 can be by conduit 610 into containing tube 100
Convey liquid.That is, in the present embodiment, when needing to supplement liquid into containing tube 100, the second shut-off valve 620 only need to be opened, i.e.,
Volume 600 can be made to convey liquid into containing tube 100 by conduit 610, when having enough liquid in containing tube 100
When, it need to only close the second shut-off valve 620.
It should be appreciated that in other embodiments, volume 600, conduit 610 and the second shut-off valve 620 can also be cancelled
Setting, enter through other modes and input liquid into containing tube 100, such as through artificial mode into containing tube 100
Liquid is conveyed, alternatively, by external tool to 100 delivered inside liquid of containing tube etc..It should be noted that when cancelling volume
600, when the setting of conduit 610 and the second shut-off valve 620, need to be arranged with sealing cover, in order to selectively closing off or
Open the opening of 100 end of containing tube.
First piston 210 and second piston 220 are movably disposed on containing tube 100, and 210 He of first piston
Second piston 220 divides containing tube 100 for the first set section 110 and the second set section 120.Wherein, the first set section 110 is located at
Side of the first piston 210 far from second piston 220, the second set section 120 are located at second piston 220 far from first piston 210
Side.Wherein, first piston 210 can move along the extending direction of containing tube 100 and change the volume of the first set section 110,
Second piston 220 can move along the extending direction of containing tube 100 and change the volume of the second set section 120.
Further, in the present embodiment, setting is spaced between first piston 210 and second piston 220.So that when the
When one piston 210 is mobile towards second piston 220, first piston 210 has definitely free-moving space, to avoid first
Piston 210, which directly supports second piston 220, leads to the movement for limiting first piston 210.Meanwhile it also can be in 220 court of second piston
When mobile to first piston 210, avoiding first piston 210 from being directly held in second piston 220 causes to limit second piston 220
It is mobile.
The both ends of communicating pipe 300 are all connected to containing tube 100, and the inner space of communicating pipe 300 and containing tube 100
Inner space is connected.Specifically, wherein the both ends of communicating pipe 300 are connected to the first set section 110 and the second set section
120, so that the first set section 110 can also make the by communicating pipe 300 to 120 delivered inside liquid of the second set section
Two set sections 120 pass through communicating pipe 300 to 110 delivered inside liquid of the first set section.Further, it is arranged on communicating pipe 300
There is the first shut-off valve 310, to be switched on or off communicating pipe 300 by the control of the first shut-off valve 310.
Wherein, it should be noted that in the case where rock permeability saturation testing 10 normal use of device, first piston
210 and second piston 220 be respectively positioned on two ends for being connected to the first set section 110 and the second set section 120 communicating pipe 300
Between.It should be appreciated that first piston 210 and second piston 220 can be moved to the end of the first set section 110 be connected to
Pipe 300 is connected between the end of the first set section 110, at this point, the operation for first piston 210 and second piston 220
It may be considered maloperation.That is, when being tested using rock permeability saturation testing device 10, first piston 210 and second
The normal assays shift motion of piston 220 is between two ends of communicating pipe 300.
It should be noted that in the present embodiment, the one end of the first set section 110 far from the second set section 120 is for holding
Rock sample 11 is set, and when rock sample 11 is placed in the first 110 inside of set section, rock sample 11 is located at the first accommodating
Section 110 end and be connected to communicating pipe 300 between the end of first set section 110, to avoid rock sample 11 block be connected to
Pipe 300.
In the present embodiment, communicating pipe 300 is in fold-line-shaped, and projection of the communicating pipe 300 on containing tube 100 is located at company
Between the both ends of siphunculus 300, it can prevent from being detained hydrops inside communicating pipe 300, convenient for the clear of rock permeability saturation testing device 10
It washes and arranges.Specifically, in the present embodiment, dividing communicating pipe 300 is three sections, wherein two sections of end is connected to containing tube 100
And it is each perpendicular to containing tube 100, another section of both ends are connected to above-mentioned two sections of end and are parallel to containing tube 100.It answers
Work as understanding, communicating pipe 300 can also the other shapes such as arc-shaped or curved shape in other embodiments.
Pressure gauge 400 is connected to the first set section 110, and pressure gauge 400 is for detecting and showing the first set section 110
Liquid pressure.During the test in order to rock permeability saturation testing device 10, convenient for experiment operator to first
Hydraulic inside set section 110 is controlled, and then convenient for effective progress of test.
Further, in the present embodiment, the end of pressure gauge 400 and the first set section 110 far from the second set section 120
With spacing, the first set section 110 corresponding with the spacing that 110 end of the first set section is formed of pressure gauge 400 can be passed through
Inner space accommodates rock sample 11, and then rock sample 11 is avoided to influence pressure gauge 400 in the first set section 110
Portion is hydraulic to be detected.
Further, the end that pipe 500 is connected to the first set section 110 is contained, specifically, pipe 500 is contained and is connected to
End of one set section 110 far from the second set section 120.Also, in the present embodiment, contain the extending direction and appearance of pipe 500
The extending direction for setting pipe 100 is identical, and contains pipe 500 and the coaxial arrangement of containing tube 100, in order to try when Liquid Penetrant rock
By containing the reception of pipe 500 and accommodating when sample 11.
Graduated cylinder 510, which is connected to, contains pipe 500, and graduated cylinder 510 be located at contain end of the pipe 500 far from the first set section 110
Portion so that entering to the liquid contained inside pipe 500 can enter to graduated cylinder 510, and then can be seeped by the judgement of graduated cylinder 510
The leaching rate of the liquid of rock sample 11 out.Wherein, the extending direction of graduated cylinder 510 is identical as the extending direction of containing tube 100,
And then convenient for the measurement for liquid leaching rate.
Fig. 1 and Fig. 2 are please referred to, in addition, additionally providing a kind of permeability test method in the present embodiment, which employs upper
The rock permeability saturation testing device 10 stated.
Permeability test method includes:
Step S11, rock permeability saturation testing device 10 is just being put, so that the first set section 110 is located at the second accommodating
The lower section of section 120.
It should be noted that at this point, second piston 220 is located at the top of first piston 210.
Step S12, rock sample 11 is placed in the first set section 110, and rock sample 11 is made to be located at the first accommodating
110 ends and communicating pipe 300 far from the second set section 120 of section are connected between the end of the first set section 110.
That is, being put into rock sample 11 to specified position, pressure gauge 400 and connection are influenced to avoid rock sample 11
The normal effect of pipe 300 so that pressure gauge 400 can be effectively measuring hydraulic, while enable communicating pipe 300 unobstructedly to
Liquid is passed through in first set section 110.
In addition, choosing rock sample 11 identical with 110 internal diameter of the first set section, and rock is tried before step S11
Sample 11 is put into the first set section 110, so that the periphery wall of rock sample 11 is attached at the internal perisporium of the first set section 110, with
So that effective progress of permeability test.
Step S13, the first shut-off valve 310 is opened, and inputs liquid into the second set section 120.
In the present embodiment, by opening the second shut-off valve 620, so that the liquid inside volume 600 passes through conduit
610 flow into inside the second set section 120.After liquid flows into the inside of the second set section 120, the second set section 120
Internal liquid can flow into the first set section 110 by communicating pipe 300.
It should be noted that first piston 210 is moved to and is connected to the first appearance with communicating pipe 300 before step S13
The end for setting section 110 is equal, in order to which 120 internal liquid of the second set section sufficiently accumulates, while being also convenient for the first set section 110
The accumulation of internal liquid avoids the occurrence of inside the first set section 110 and situations such as bubble occurs.
Step S14, the opening for closing 120 end of the second set section, moves up second piston 220.
That is, in the present embodiment, when the liquid product inside the second set section 120 is full, at this time inside the first set section 110
Liquid equally product it is full, close the second shut-off valve 620 at this time to realize the purpose of the opening of closing 120 end of the second set section.
It should be appreciated that in other embodiments, it, can be by manually to the second accommodating when not set volume 600
Liquid is added in 120 inside of section.When 120 internal liquid of the second set section product is full, it is by the closure of openings on the second set section 120
It can.
After the opening for closing the second set section 120, i.e., after closing the second shut-off valve 620, by moving up
Liquid inside second set section 120 can be pressed into extremely by second piston 220 by second piston 220 by communicating pipe 300 at this time
First set section 110 at this time since the liquid inside the first set section 110 increases, while driving first piston 210 to moving up
It is dynamic.
Step S15, after being filled with the liquid of predetermined amount in the first set section 110, the first shut-off valve 310 is closed, and downwards
Mobile first piston 210.
That is, in the present embodiment, when the liquid in the first set section 110 is enough, the first shut-off valve 310 is just closed, with
So that the connected relation of the first set section 110 and the second set section 120 disconnects.It should be noted that predetermined amount can with when test
Operator manually controls, and only need to guarantee that second piston 220 is maintained between two ends of communicating pipe 300.
After closing the first shut-off valve 310, first piston 210 is moved down, with to the liquid inside the first set section 110
Body provides pressure, is promoted so that liquid is penetrated into the speed inside rock sample 11, and then improves the progress of permeability test
Rate.
Step S16, it persistently moves first piston 210 and makes the pressure of 110 internal liquid of the first set section constant, until
Water dropleting speed is stretched out below rock sample 11 to keep stablizing.
That is, in the present embodiment, liquid while liquid penetrates into rock sample 11, inside the first set section 110
It can gradually decrease, the hydraulic of the liquid in the first set section 110 will be in the trend gradually decreased, at this time by continuing at this time
First piston 210 is moved down, just hydraulic inside the first set section 110 can be kept constant, and then can be effectively carried out infiltration
Test thoroughly.
It should be noted that hydraulic inside first set section 110 can wherein be detected by pressure gauge 400,
Just can intuitively show it is hydraulic inside the first set section 110, and then convenient for experimental implementation person to the first set section 110 inside
It is hydraulic to be controlled.
In addition, the liquid of exudation rock sample 11 can then measure the speed of liquid exudation by graduated cylinder 510, in graduated cylinder 510
Portion's liquid, which increases speed to stablize, shows the velocity-stabilization of liquid body exudate.
It should be noted that if the amount of liquid inside the first set section 110 substantially permeates completion and rock sample
The speed of 11 liquid body exudate is not also stable, at this time by opening the first shut-off valve 310, by moving up second piston 220
Mode the liquid inside the second set section 120 is added to inside the first set section 110, only need to guarantee to mention to rock sample 11
The fluid pressure of confession is stablized.
When the rate stabilization of 11 liquid body exudate of rock sample, that is, complete the permeability test of rock sample 11.Further
Ground records the amount that graduated cylinder 510 in time t collects liquid, in the rate stabilization of 11 liquid body exudate of rock sample in order to calculate
The infiltration coefficient of rock sample 11.Wherein, time t can be controlled by test operator.
Incorporated by reference to Fig. 1 and Fig. 3 is participated in, in addition, additionally providing a kind of saturation testing method in the present embodiment, which employs this
The rock permeability saturation testing device 10 provided in embodiment.Saturation testing method includes:
Step S21, rock permeability saturation testing device 10 is placed upside down, so that the first set section 110 is located at second
120 top of set section.
It should be noted that at this point, first piston 210 is located at the top of second piston 220.
Step S22, rock sample 11 is put into the first set section 110, and rock sample 11 is made to be located at the first accommodating
110 ends and communicating pipe 300 far from the second set section 120 of section are connected between the end of the first set section 110.
Step S23, the first shut-off valve 310 is opened, and inputs liquid into the second set section 120.
Step S24, the opening for closing 120 end of the second set section, moves down second piston 220.
Step S25, after being filled with the liquid of predetermined amount in the first set section 110, the first shut-off valve 310 is closed, and upwards
Mobile first piston 210.
Step S26, it persistently moves first piston 210 and makes the pressure of 110 internal liquid of the first set section constant, until
11 top liquid body exudate of rock sample.
Wherein, it should be noted that the permeability test method and saturation testing method provided in the present embodiment is roughly the same,
Distinctive points are, turn upside down for the operation direction of first piston 210 and second piston 220.It is worth noting that though
So turn upside down for the operation direction of first piston 210 and second piston 220, but it is living for first piston 210 and second
The direction mobile relative to rock sample 11 of plug 220 is identical.So for saturation testing method, details are not described herein.
The rock permeability saturation testing device 10 provided in the present embodiment can provide pressure to liquid by piston when just putting
Power improves so that liquid rapidly permeates rock sample 11, and then quickly completes the permeability test for rock sample 11
The rate of test.In addition, rock permeability saturation testing device 10 can be placed upside down, liquid is made to be located at rock sample 11 at this time
Lower section, and simultaneously by piston to liquid provide pressure, water is penetrated under pressure in rock sample 11, realize rock
It is fully saturated, and then can also pass through the device carry out 11 saturation testing of rock sample.I.e. the present invention provides a kind of rock infiltrations
Saturating saturation testing device 10, that is, can be carried out the permeability test of rock sample 11, while also can be carried out the saturation of rock sample 11
Test, and its structure is simple, it is easy to operate, it is at low cost.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of rock permeability saturation testing device, permeability test and saturation testing for rock sample, which is characterized in that
The rock permeability saturation testing device includes:
Containing tube, the both ends of the containing tube are provided with the opening being connected to inside the containing tube；
First piston and second piston, the first piston and the second piston are movably disposed in the containing tube
The containing tube is simultaneously divided into the first set section and the second set section by portion, and the first piston and the second piston can be along institutes
State the mobile volume to change first set section and second set section of extending direction of containing tube；
Communicating pipe, the both ends of the communicating pipe be connected to first set section middle part and second set section, and
It is connected to first set section and second set section, the first shut-off valve is provided on the communicating pipe；
Wherein, first set section is for accommodating the rock sample, and makes the rock sample be located at described first and hold
End and the communicating pipe of the section far from second set section is set to be connected between the end of first set section.
2. rock permeability saturation testing device according to claim 1, which is characterized in that the first piston and described
Two piston spaces are every setting, and first set section is located at side of the first piston far from the second piston, described
Second set section is located at side of the second piston far from the first piston.
3. rock permeability saturation testing device according to claim 1, which is characterized in that the rock permeability saturation testing
Device further includes pressure gauge, and the pressure gauge is connected to second set section, and the pressure gauge is for detecting and showing
The pressure of the second set section internal liquid.
4. rock permeability saturation testing device according to claim 1, which is characterized in that the rock permeability saturation testing
Device further includes containing pipe, the end for containing pipe and being connected to first set section, and described contains pipe and described the
One set section is connected by the outlet.
5. rock permeability saturation testing device according to claim 4, which is characterized in that the rock permeability saturation testing
Device further includes graduated cylinder, the graduated cylinder be connected to it is described contain pipe, and be located at and described contain pipe far from first set section
One end, the extending direction of the graduated cylinder is identical as the extending direction of the containing tube.
6. rock permeability saturation testing device according to claim 1, which is characterized in that the rock permeability saturation testing
Device further includes volume, and the volume is connected by conduit with second set section, and is provided on the conduit
Two shut-off valves.
7. a kind of permeability test method, which is characterized in that using the rock permeability as described in any one of claim 1-6
Saturation testing device, which comprises
The rock permeability saturation testing device is just being put, so that first set section is located under second set section
Side；
Rock sample is put into first set section, and rock sample is made to be located at first set section far from described
The end of two set sections and the communicating pipe are connected between the end of first set section；
First shut-off valve is opened, and inputs liquid into second set section；
The opening for closing second set section end, moves up the second piston；
After being filled with the liquid of predetermined amount in first set section, first shut-off valve is closed, and moves down described the
One piston；
It persistently moves the first piston and makes the pressure of the first set section internal liquid constant, until the rock tries
Liquid body exudate dropleting speed keeps stablizing below sample.
8. permeability test method according to claim 7, which is characterized in that opening first shut-off valve, and to
It is inputted before liquid step in second set section, the method also includes:
The first piston is moved to equal with the end for being connected to first set section communicating pipe.
9. a kind of saturation testing method, which is characterized in that using the rock permeability as described in any one of claim 1-6
Saturation testing device, which comprises
The rock permeability saturation testing device is placed upside down, so that first set section is located at second set section
Top；
Rock sample is put into first set section, and rock sample is made to be located at first set section far from described
The end of two set sections and the communicating pipe are connected between the end of first set section；
First shut-off valve is opened, and inputs liquid into second set section；
The opening for closing second set section end, moves down the second piston；
After being filled with the liquid of predetermined amount in first set section, first shut-off valve is closed, and moves up described the
One piston；
It persistently moves the first piston and makes the pressure of the first set section internal liquid constant, until on rock sample
Square liquid body exudate.
10. saturation testing method according to claim 9, which is characterized in that opening first shut-off valve, and to
It is inputted before liquid step in second set section, the method also includes:
The first piston is moved to equal with the end for being connected to first set section communicating pipe.
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