CN107807084A - A kind of rock sample seepage flow test device and method - Google Patents
A kind of rock sample seepage flow test device and method Download PDFInfo
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- CN107807084A CN107807084A CN201711057532.9A CN201711057532A CN107807084A CN 107807084 A CN107807084 A CN 107807084A CN 201711057532 A CN201711057532 A CN 201711057532A CN 107807084 A CN107807084 A CN 107807084A
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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
- G01N15/0806—Details, e.g. sample holders, mounting samples for testing
Abstract
The invention discloses a kind of rock sample seepage flow test device and method, sealing device is loaded including seepage flow water-pressure regulating device and test specimen, seepage flow water-pressure regulating device includes running gear and high pressure gas holder, the first water tank and the second water tank, and the gas outlet of high pressure gas holder is connected by connecting tube with water tank；The delivery port of first water tank is connected by linker with the water inlet of the second water tank；Test specimen, which loads sealing device, includes the rock sample that test specimen loads seal cavity and is arranged in test specimen loading seal cavity, the inlet opening that test specimen loads seal cavity is connected by connecting tube with the delivery port of the second water tank, and the apopore that test specimen loads seal cavity is connected with seepage flow flow detector.The present invention improves the accuracy and authenticity of measurement Rockmass fractures seepage tests, is easy to be installed in rock triaxial test instrument.
Description
Technical field
The invention belongs to rock seepage tests room technical field of measuring equipment, and in particular to one kind is installed in triaxial tester
A kind of rock sample seepage flow test device and method.
Background technology
Crack rock is the complex dielectrics that the various engineerings such as China's water conservancy, mine, tunnel, nuclear waste storage frequently encounter,
Its Penetration Signature research is one of focus of current rock mass mechanics research field.For the rock mass in crack be present, when being deposited in crack
When water, the pressure of water can cause the gradual unstable failure of rock mass；On a macroscopic scale, seepage field presence and change be to lead
Fracturing gap rock mass engineering project unstability, even results in one of major reason of extensive geological disaster.Therefore research crack is to rock mass work
The influence of journey is just it should be understood that the Penetration Signature of crack rock.
Although domestic and international expert obtains with scholar in the research in terms of penetrating fracture seepage, in terms of tight rock seepage flow
Some progress, but most research is all built upon the basis that single factor is tested Flow In Jointed Rock Masses feature
On, at the same study of rocks hyposmosis, insertion crack, in terms of charges, existing document seldom occurs, hereinto in the case of study
Filling runs through the percolation law of fissure rock still also without the more ripe theory of formation.Current most single crack rock oozes
The research of saturating characteristic is all based on cube theorem, and the applicable elements of cube theorem are that crack upper and lower surface is substantially parallel and thick
Rugosity very little；Therefore conventional experiment is manually prepared single crack and studied using stainless steel plate or lucite more；And seepage flow
Pressure can not regulate and control, or smaller using height of water level difference adjustment pressure adjustment amplitude, it is impossible to real simulation intrinsic fracture rock mass
Flow event.Need to find under a kind of multifactor collective effect at present, carried out to penetrating Flow In Jointed Rock Masses rule containing charges
The method that research and seepage flow performance are detected.
The percolation law of fissure rock is studied still also without the more ripe theory of formation for Flow In Jointed Rock Masses at present.By
Have much in the factor for influenceing the insertion Flow In Jointed Rock Masses rule containing charges, and be much also mutually coupled, cause to utilize control
It is limited that quantity method research single factor test processed carries out Research Significance to the rule that Flow In Jointed Rock Masses are penetrated containing charges.Prior art
Seepage flow detection device water pressure can not regulate and control, or smaller using height of water level difference adjustment pressure adjustment amplitude, it is impossible to real mould
Intend intrinsic fracture Seepage of Rock Masses process, it is impossible to provide precise and stable lasting water pressure.Part rock triaxial test instrument lacks again
Seepage apparatus, some seepage apparatus moisture storage capacitys are small so that can not meet the use of long period experiment.
In summary, it is small for seepage apparatus moisture storage capacity in the prior art thus can not meet the long period experiment make
It can not be regulated and controled with, seepage flow detection device water pressure, or it is smaller using height of water level difference adjustment pressure adjustment amplitude, it is impossible to it is real
Simulate intrinsic fracture Seepage of Rock Masses process, it is impossible to the problem of precise and stable lasting water pressure is provided, still lack effective solve
Scheme.
The content of the invention
In order to overcome the above-mentioned deficiencies of the prior art, the invention provides a kind of rock sample seepage flow test device and side
Method, improves the accuracy and authenticity of measurement fisstured flow experiment, and is easy to be installed in a kind of triaxial tester, can adjust
Apply seepage flow range hydraulic pressure.
The technical solution adopted in the present invention is：
A kind of rock sample seepage flow test device, including seepage flow water-pressure regulating device and test specimen load sealing device；
Wherein, the seepage flow water-pressure regulating device includes running gear and the high pressure gas holder being arranged on running gear, the
One water tank and the second water tank, gas outlet are provided with the top of the high pressure gas holder, the gas outlet of high pressure gas holder passes through connection
Pipe is connected with water tank；The first water storage pot bottom is provided with delivery port, the side of the second water storage pot bottom be provided with
The relative water inlet of the delivery port of first water tank, opposite side are provided with delivery port, and the delivery port of the first water tank passes through linker
It is connected with the water inlet of the second water tank；
The test specimen, which loads sealing device, to be included test specimen loading seal cavity and is arranged in test specimen loading seal cavity
Rock sample, the inlet opening that test specimen loads seal cavity are connected by connecting tube with the delivery port of the second water tank, test specimen dress
The apopore for carrying seal cavity is connected with seepage flow flow detector.
Further, the running gear includes bottom plate, push and pull bar and the castor below bottom plate.
Further, the high pressure gas holder is fixed on running gear by gas tank fixing device, and the gas tank fixes dress
Put and be bolted on running gear, the high pressure gas holder is placed in gas tank fixing device.
Further, digital-display air pressure table and pressure-reducing valve are provided with the gas outlet of the high pressure gas holder, is adjusted by pressure-reducing valve
Save seepage flow hydraulic pressure.
Further, the linker uses connecting tube, and one end of connecting tube passes through bolt and the first water storage pot bottom
Delivery port is connected, and the other end is connected by bolt with the delivery port of the second water storage pot bottom.
Further, water transport port, first water tank are respectively equipped with the top of first water tank and the second water tank
Valve is provided with the water transport port at the top of the second water tank；An air inlet, institute are additionally provided with the top of first water tank
The air inlet for stating the first water tank is connected by connecting tube and bolt with the gas outlet of high pressure gas holder；The second water tank bottom
The water outlet in portion is provided with digital display water pressure gauge and outlet valve.
Further, it is that detachable test specimen loads seal cavity, detachable test specimen that the test specimen, which loads seal cavity,
Loading seal cavity includes seal cavity shell, is arranged on the upper press cover of seal cavity shell upper and is arranged on outside seal cavity
The lower cover of shell bottom, the interior apopore for being provided with L-type of the upper press cover, apopore are connected with seepage flow flow detector；It is described
The inlet opening of L-type is provided with lower cover, inlet opening is connected by connecting tube with the delivery port of the second water storage pot bottom；It is described close
Rock sample is provided with envelope shell cavity, backplate is provided between the rock sample and the inwall of seal cavity shell, is led to
Epoxy natural gum is crossed by backplate by backplate and seal cavity outer casing inner wall airtight connection；The top of the rock sample and upper press cover it
Between, between the bottom of the rock sample and lower cover be respectively equipped with porous permeable plate.
Further, the upper press cover and lower cover pass through screw thread and seal cavity cage connection, the upper press cover respectively
Top is provided with platen, and pressing disc is provided with below the lower cover.
Using the test method of rock sample seepage flow test device, comprise the following steps：
Step 1：Between the water inlet at the top of gas outlet and the first water tank at the top of high pressure gas holder, first water tank
Between the water inlet of the delivery port of bottom and the second water storage pot bottom and test specimen loads inlet opening and the second water storage of seal cavity
Connecting tube is respectively adopted between the delivery port of pot bottom to be connected, is loaded in test specimen and seepage flow stream is connected at the apopore of seal cavity
Amount detecting device；
Step 2：The valve at the top of the first water tank and the second water tank is opened, passes through the water inlet at the top of the first water tank
The water filling into the first water tank and the second water tank, after two water tanks fill water, close the first water tank and the second water storage
The valve of tank top；
Step 3：The rock sample of experiment is arranged on into test specimen to load in seal cavity, and good seal test specimen loading is close
Cavity is sealed, and is made in the inlet opening of test specimen loading seal cavity and its connecting tube being connected with the delivery port of the second water storage pot bottom
Full of water；
Step 4：The outlet valve of the second water storage pot bottom is opened, then slowly opens the pressure-reducing valve at the top of high pressure gas holder, root
According to digital display hydraulic pressure meter reading, decompression valve regulation seepage water pressure is used；
Step 5：The seepage discharge in the testing time of test determination is recorded by seepage flow flow detector.
Further, if desired change the rock sample of experiment, first close the outlet valve of the second water storage pot bottom, then beat
Open after test specimen loads the upper press cover in seal cavity and take out rock sample, change rock sample, installation upper press cover sealed test piece dress
Seal cavity is carried, then opens the outlet valve of the second water tank, and adjusts pressure-reducing valve and changes seepage water pressure, is examined by seepage flow flow
The seepage discharge surveyed in the testing time of device record test determination；After the completion of experiment, the pressure-reducing valve at the top of closing high pressure gas holder
With the outlet valve of the second water storage pot bottom, the rock sample of taking-up experiment.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) present invention, can be larger using the seepage flow water-pressure regulating device being made up of high pressure gas holder and two water tanks
In the range of continual and steady seepage flow hydraulic pressure is provided, precise and stable pressure value can be obtained, improve the precision of experiment, be calculated with this
Obtain the pressure and hydraulic gradient when fluid passes through test specimen；
(2) present invention loads sealing device to load sealing rock sample using test specimen, and the present invention is to rock sample without tool
Body requirement, because two water tank inner storing water amounts are larger, therefore natural fissure rock, Packing character run through the seepage flow of crack rocks
Experiment can meet；Rock Sample Size requirement need to meet to require in pressure indoor；
(3) gas outlet of high pressure gas holder is connected by the present invention with water tank；The delivery port of first water tank passes through connection
Device is connected with the water inlet of the second water tank, can drain the air in the second water tank after water filling easily, increases the peace of experiment
Quan Xing, increase the volume of press water, and can prevent equipment from producing air string and stable hydraulic pressure；
(4) present invention can be installed on the rock triaxial test instrument of no seepage apparatus, expanded rock triaxial test instrument
Seepage tests function.
Brief description of the drawings
The Figure of description for forming the part of the application is used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its illustrate be used for explain the application, do not form the improper restriction to the application.
Fig. 1 is seepage flow water-pressure regulating device structural representation disclosed in the embodiment of the present invention；
Fig. 2 is that test specimen disclosed in the embodiment of the present invention loads schematic diagram of sealing device.
Embodiment
It is noted that described further below is all exemplary, it is intended to provides further instruction to the application.It is unless another
Indicate, all technologies used herein and scientific terminology are with usual with the application person of an ordinary skill in the technical field
The identical meanings of understanding.
It should be noted that term used herein above is merely to describe embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative
It is also intended to include plural form, additionally, it should be understood that, when in this manual using term "comprising" and/or " bag
Include " when, it indicates existing characteristics, step, operation, device, component and/or combinations thereof.
As background technology is introduced, it is small so that when can not meet longer to there is seepage apparatus moisture storage capacity in the prior art
Between the use tested, seepage flow detection device water pressure can not regulate and control, it is or smaller using height of water level difference adjustment pressure adjustment amplitude,
Intrinsic fracture Seepage of Rock Masses process can not really be simulated, it is impossible to precise and stable lasting water pressure deficiency is provided, in order to solve
As above technical problem, present applicant proposes a kind of rock seepage test device and method, and measurement Rockmass fractures are improved to reach
The accuracy and authenticity of seepage tests, and be easy to be installed in rock triaxial test instrument, the rock sample in experimental rig can
The size in crack is changed, and the purpose for applying seepage flow range hydraulic pressure can be expanded.
In a kind of typical embodiment of the application, as shown in Figure 1, there is provided a kind of rock sample seepage tests dress
Put, the device includes seepage flow water-pressure regulating device and test specimen loads sealing device.
Wherein, seepage flow water-pressure regulating device includes running gear 4 and the high pressure gas holder 1, the water storage that are arranged on running gear
Tank I 2 and water tank II 3, the top of the high pressure gas holder 1 are provided with gas outlet, the gas outlet of high pressure gas holder by connecting tube with
Water tank I 2 is connected；The bottom of water tank I 2 is provided with delivery port, and the side of the bottom of water tank II 3 is provided with and water tank
The relative water inlet of the delivery ports of I 2 bottoms, opposite side are provided with delivery port；The delivery port of water tank I 2 passes through linker 20 and storage
The water inlet of the bottom of water pot II 3 is connected.
Test specimen, which loads sealing device, includes the rock that test specimen loads seal cavity 17 and is arranged in test specimen loading seal cavity
Stone test specimen 16, the inlet opening 14 that test specimen loads seal cavity are connected by connecting tube with the delivery port of water tank II 3, test specimen dress
The apopore 15 for carrying seal cavity is connected with seepage flow flow detector.
In the present embodiment, described running gear 4 is used to fix high pressure gas holder, water tank I and water tank II, using dragging
Bassinet structure, it is easy to the movement of high pressure gas holder, water tank I and water tank II；The running gear 4 includes bottom plate, push and pull bar and peace
Castor below bottom plate.
Above-mentioned high pressure gas holder 2 is hyperbaric oxygen gas tank, and high pressure gas holder tank body external diameter is 200mm, and tank skin thickness is 15mm, gas tank
Highly it is about 900mm；The high pressure gas holder is fixed on running gear by gas tank fixing device 5, and gas tank fixing device 5 passes through spiral shell
Bolt is fixed on running gear, and then high pressure gas holder 1 is placed in gas tank fixing device, not only safety but also can be easily by high pressure
Gas tank is removed to be inflated at any time；Digital-display air pressure table 6 and pressure-reducing valve 9 are provided with the gas outlet of the high pressure gas holder, passes through pressure-reducing valve
Gas pressure intensity is adjusted, to adjust seepage flow hydraulic pressure according to needed for experiment.
The above-mentioned tank body external diameter of water tank I 2 is 200mm, tank skin thickness 15mm, and gas tank is highly about 800mm；The tank of water tank II
External footpath is 200mm, tank skin thickness 15mm, and gas tank is highly about 700mm；The bottom of water tank I 2 and water tank II 3 passes through respectively
It is bolted on running gear, the bottom of water tank I 2 is about delivery port provided with a diameter, the bottom of the water tank II
Side is provided with 10mm water inlet, and the delivery port of the bottom of water tank I passes through linker and the water inlet of the bottom of water tank II
It is connected, the linker 2 uses connecting tube, and one end of connecting tube is connected by bolt with the delivery port of the bottom of water tank I,
The other end is connected by bolt with the water inlet of the bottom of water tank II；The top of the water tank I 2 and water tank II 3 is all provided with
Water transport port is put, valve 8 is provided with the water transport port；The top of the water tank I is additionally provided with an air inlet, the water tank I 3
Top air inlet be connected by connecting tube 21 and bolt with the gas outlet of high pressure gas holder 1；The bottom of the water tank II 3 is set
Delivery port is equipped with, the water outlet of the bottom of water tank II 3 is provided with digital display water pressure gauge 7 and outlet valve 22, it is ensured that seepage flow
Hydraulic pressure output device can regulate and control seepage pressure in larger range hydraulic pressure, device is had higher security, make seepage flow water body
With stable hydraulic pressure and there is larger pressure water capacity；The delivery port loads annular seal space by connecting tube and bolt with test specimen
The inlet opening connection of body.
Because high pressure gas holder 1, water tank I 2 and water tank II 3 need to keep enough rigidity and intensity, running gear 4
Enough rigidity and intensity are needed, therefore, above-mentioned high pressure gas holder 1, water tank I 2, water tank II 3 and running gear 4 are distinguished
It is made of Steel material.
In order to be loaded sealing to rock sample, seal cavity is loaded using test specimen sealing is loaded to test specimen；On
The test specimen stated, which loads seal cavity 17, includes detachable test specimen loading seal cavity, and the detachable test specimen loads seal cavity
Including seal cavity shell, it is arranged on the upper press cover 13 of seal cavity shell upper and is arranged under seal cavity outer casing underpart
Gland 23, the upper press cover 13 and lower cover 17 are respectively by screw thread and seal cavity cage connection, by upper press cover 13 with
Gland 23 blocks seal cavity shell, has sealing anticollision effect；Be provided with the apopore 15 of L-type in the upper press cover, it is described go out
Water hole is connected with seepage flow flow detector, and the seepage flow flow detector uses prior art, and the application repeats no more；It is described
The inlet opening 14 of L-type is provided with lower cover, inlet opening is connected by connecting tube with the delivery port of the bottom of water tank II；It is described close
Rock sample 16 is provided with envelope shell cavity, backplate is provided between the rock sample and the inwall of seal cavity shell
11, by epoxy natural gum by backplate respectively by test specimen and seal cavity outer casing inner wall airtight connection, it is ensured that cavity sealing is oozed
Flowing water will not permeate from the gap outside rock, effectively prevent water from going over from test specimen external penetration；The top of the test specimen with
Porous permeable plate 2 is respectively equipped between upper press cover between the bottom of the test specimen and lower cover, the top of upper press cover 13 is set
Platen 18 is equipped with, the lower section of lower cover 23 is provided with pressing disc 19, passes through upper platen 18 and the enhancing stream experiment of pressing disc 19
The sealing of seal cavity.
Rock sample seepage flow test device disclosed by the invention when in use, first passes through the valve 8 at the top of water tank I to storage
Water filling in water pot I, the valve 8 at the top of water tank II is opened, water is by the way that the bottom delivery port of water tank I and the bottom of water tank II are entered
The linker that the mouth of a river is connected flows into water tank II, when the valve at the top of water tank II has water spilling, then shows water storage
Water has been filled in tank II, then closing the valve at the top of water tank II can ensure do not have air in tank II, then proceed to
The valve at the top of water tank I is closed after water is filled in water tank I；Set test specimen to be measured and load sealing with detachable test specimen
Cavity, connect the connecting tube between the gas outlet of high pressure gas holder and water tank I, the delivery port of the bottom of water tank II and test specimen and fill
The connecting tube between the inlet opening of seal cavity is carried, after opening seepage flow flow detector, is first turned on the bottom of water tank II
Water outlet outlet valve 22, then slowly open the pressure-reducing valve at the top of high pressure gas holder and drain test specimen loading seal cavity and connecting tube
Interior air, and pressure-reducing valve is adjusted to water pressure is provided according to test requirements document, pass through water collector in seepage flow flow detector
Record the seepage discharge in the testing time of test determination；Dismounting is replaced the rock that detachable test specimen is loaded in seal cavity and tried
Part 16, pressure-reducing valve 9 is adjusted again to new defined hydraulic pressure force value and records the seepage discharge in the test determination time.Experiment is completed
Final finishing laboratory apparatus, the data of collection are arranged, obtained in the rock flow event in the case of different seepage water pressures
Penetration Signature.
In the another embodiment of the application, it is proposed that a kind of experiment side using rock sample seepage flow test device
Method, this method, which has, to be comprised the following steps：
Step 1：Between the air inlet at the gas outlet of high pressure gas holder and the top of water tank I, the water outlet of the bottom of the water tank I
Between mouth and the water inlet of the bottom of water tank II and test specimen loads the inlet opening of seal cavity and the delivery port of the bottom of water tank II
Between connecting tube be respectively adopted be connected, loaded in test specimen and seepage flow flow detector connected at the apopore of seal cavity；
Step 2：The valve at the top of water tank I and water tank II is opened, by the water transport port at the top of water tank I to water tank
I and water tank II in water filling, when water will overflow from the water transport port at the top of water tank II, i.e., full of water after, close water tank
The valve at II top, continue to close the valve at the top of water tank I after refilling water to water tank I；By the rock sample of experiment
Installed in Seepage Experiment seal cavity, and the good seal Seepage Experiment seal cavity, and test specimen is set to load the water inlet of seal cavity
Water body is full of in hole and its connecting tube being connected with the bottom delivery port of water tank II；
Step 3：The water outlet outlet valve of the bottom of water tank II is opened, then slowly opens the pressure-reducing valve of high pressure gas holder,
According to digital display hydraulic pressure meter reading, using valve regulation seepage water pressure is depressurized, make the seepage water of seepage water pressure Pass Test needs
Pressure；
Step 4：The seepage discharge in the testing time of test determination is recorded by seepage flow flow detector；If desired change
Become seepage water pressure and adjust seepage water pressure again using pressure-reducing valve；
Step 5：If desired change the rock sample of experiment, first close the water outlet outlet valve of the bottom of water tank II,
Test specimen is taken out after opening Seepage Experiment seal cavity upper press cover again, changes test specimen, installation upper press cover sealing Seepage Experiment annular seal space
Body, then the water outlet outlet valve of water tank II is opened, and adjust pressure-reducing valve and change seepage water pressure, pass through seepage flow flow detection
Seepage discharge in the testing time of device record test determination；
Step 6：After the completion of experiment, the water outlet water outlet of the pressure-reducing valve and water tank II that are first shut off at the top of high pressure gas holder
Valve, the rock sample of experiment is taken out, puts each experimental provision in order, and the data of collection are arranged, obtain different examinations
Penetration Signature of the rock sample tested under situation in flow event.
As can be seen from the above description, the application the above embodiments realize following technique effect：
(1) present invention, can be larger using the seepage flow water-pressure regulating device being made up of high pressure gas holder and two water tanks
In the range of continual and steady seepage flow hydraulic pressure is provided, precise and stable pressure value can be obtained, improve the precision of experiment, be calculated with this
Obtain the pressure and hydraulic gradient when fluid passes through test specimen；
(2) present invention loads sealing device to load sealing rock sample using test specimen, and the present invention is to rock sample without tool
Body requirement, because two water tank inner storing water amounts are larger, therefore natural fissure rock, Packing character run through the seepage flow of crack rocks
Experiment can meet；Rock Sample Size requirement need to meet to require in pressure indoor；
(3) gas outlet of high pressure gas holder is connected by the present invention with water tank；The delivery port of first water tank passes through connection
Device is connected with the water inlet of the second water tank, can drain the air in the second water tank after water filling easily, increases the peace of experiment
Quan Xing, increase the volume of press water, and can prevent equipment from producing air string and stable hydraulic pressure；
(4) present invention can be installed on the rock triaxial test instrument of no seepage apparatus, expanded rock triaxial test instrument
Seepage tests function.
Although above-mentioned the embodiment of the present invention is described with reference to accompanying drawing, model not is protected to the present invention
The limitation enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme those skilled in the art are not
Need to pay various modifications or deformation that creative work can make still within protection scope of the present invention.
Claims (10)
1. a kind of rock sample seepage flow test device, it is characterized in that, including seepage flow water-pressure regulating device and test specimen loading sealing dress
Put；
Wherein, the seepage flow water-pressure regulating device includes running gear and the high pressure gas holder being arranged on running gear, the first storage
Water pot and the second water tank, are provided with gas outlet at the top of the high pressure gas holder, the gas outlet of high pressure gas holder by connecting tube with
Water tank is connected；The first water storage pot bottom is provided with delivery port, and the side of the second water storage pot bottom is provided with and first
The relative water inlet of the delivery port of water tank, opposite side are provided with delivery port, and the delivery port of the first water tank passes through linker and
The water inlet of two water tanks is connected；
The test specimen, which loads sealing device, includes the rock that test specimen loads seal cavity and is arranged in test specimen loading seal cavity
Test specimen, the inlet opening that test specimen loads seal cavity are connected by connecting tube with the delivery port of the second water tank, and test specimen loads close
The apopore of envelope cavity is connected with seepage flow flow detector.
2. rock sample seepage flow test device according to claim 1, it is characterized in that, the running gear include bottom plate,
Push and pull bar and the castor below bottom plate.
3. rock sample seepage flow test device according to claim 1, it is characterized in that, the high pressure gas holder is consolidated by gas tank
Determine device to be fixed on running gear, the gas tank fixing device is bolted on running gear, the high pressure gas holder
It is placed in gas tank fixing device.
4. rock sample seepage flow test device according to claim 1, it is characterized in that, at the gas outlet of the high pressure gas holder
Digital-display air pressure table and pressure-reducing valve are provided with, by depressurizing valve regulation seepage water pressure.
5. rock sample seepage flow test device according to claim 1, it is characterized in that, the linker uses connecting tube,
One end of connecting tube is connected by bolt with the delivery port of the first water storage pot bottom, and the other end passes through bolt and the second water tank
The delivery port of bottom is connected.
6. rock sample seepage flow test device according to claim 1, it is characterized in that, first water tank and the second storage
It is respectively equipped with water transport port at the top of water pot, valve is provided with the water transport port at the top of first water tank and the second water tank；
An air inlet is additionally provided with the top of first water tank, the air inlet of first water tank passes through connecting tube and bolt and height
The calm the anger gas outlet of tank is connected；The water outlet of the second water storage pot bottom is provided with digital display water pressure gauge and outlet valve.
7. rock sample seepage flow test device according to claim 1, it is characterized in that, the test specimen loads seal cavity and is
Detachable test specimen loads seal cavity, and detachable test specimen, which loads seal cavity, to be included seal cavity shell, be arranged on sealing
The upper press cover on shell cavity top and the lower cover for being arranged on seal cavity outer casing underpart, interior the going out provided with L-type of the upper press cover
Water hole, the apopore are connected with seepage flow flow detector；The inlet opening of L-type is provided with the lower cover, inlet opening passes through
Connecting tube is connected with the delivery port of the second water storage pot bottom；Rock sample, the rock are provided with the seal cavity shell
Backplate is provided between the inwall of stone test specimen and seal cavity shell, by epoxy natural gum by backplate by outside backplate and seal cavity
Shell inwall airtight connection；Between the top of the rock sample and upper press cover, between the bottom of the rock sample and lower cover
It is respectively equipped with porous permeable plate.
8. rock sample seepage flow test device according to claim 7, it is characterized in that, upper press cover and the lower cover difference
By screw thread and seal cavity cage connection, platen is provided with above the upper press cover, is provided with down below the lower cover
Platen.
9. using the test method of the rock sample seepage flow test device any one of claim 1-8, it is characterized in that, bag
Include following steps：
Step 1：Between the water inlet at the top of gas outlet and the first water tank at the top of high pressure gas holder, the first water storage pot bottom
Delivery port and the second water storage pot bottom water inlet between and test specimen load inlet opening and the second water tank bottom of seal cavity
Connecting tube is respectively adopted between the delivery port in portion to be connected, is loaded in test specimen and the inspection of seepage flow flow is connected at the apopore of seal cavity
Survey device；
Step 2：The valve at the top of the first water tank and the second water tank is opened, by the water inlet at the top of the first water tank to
Water filling in one water tank and the second water tank, after two water tanks fill water, close the first water tank and the second water storage tank deck
The valve in portion；
Step 3：The rock sample of experiment is arranged on into test specimen to load in seal cavity, and good seal test specimen loading annular seal space
Body, and make to be full of in the inlet opening of test specimen loading seal cavity and its connecting tube being connected with the delivery port of the second water storage pot bottom
Water；
Step 4：The outlet valve of the second water storage pot bottom is opened, the pressure-reducing valve at the top of high pressure gas holder is then slowly opened, according to number
Aobvious hydraulic pressure meter reading, use decompression valve regulation seepage water pressure；
Step 5：The seepage discharge in the testing time of test determination is recorded by seepage flow flow detector.
10. the test method according to claim 9 using rock sample seepage flow test device, it is characterized in that,
If desired change experiment rock sample, first close the outlet valve of the second water storage pot bottom, then open test specimen load it is close
Rock sample to be taken out after upper press cover on envelope cavity, changes rock sample, installation upper press cover sealed test piece loads seal cavity, then
The outlet valve of the second water tank is opened, and adjusts pressure-reducing valve and changes seepage water pressure, is recorded and tried by seepage flow flow detector
Seepage discharge in testing time as defined in testing；After the completion of experiment, the pressure-reducing valve and the second water tank closed at the top of high pressure gas holder
The outlet valve of bottom, take out the rock sample of experiment.
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| CN109030319A (en) * | 2018-10-07 | 2018-12-18 | 河南工程学院 | A kind of device and method measuring rock seepage flow |
| CN109187926A (en) * | 2018-09-18 | 2019-01-11 | 太原理工大学 | Three axis seepage flow test device of fractured coal and rock and desorption-diffusion-seepage tests system |
| CN110286078A (en) * | 2019-07-31 | 2019-09-27 | 招商局重庆交通科研设计院有限公司 | A kind of tunnel rhegma liner structure percolating water property testing system |
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| CN110672488A (en) * | 2019-09-30 | 2020-01-10 | 太原理工大学 | Experimental device for influence of seepage pressure on rock-soil strength and ground stress on rock-soil permeability |
| WO2020048068A1 (en) * | 2018-09-07 | 2020-03-12 | 山东科技大学 | Method for preparing seepage test piece containing monitorable micro-fracture |
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Application publication date: 20180316 |