CN108169455A - A kind of filling medium true triaxial seepage failure laboratory and test method - Google Patents
A kind of filling medium true triaxial seepage failure laboratory and test method Download PDFInfo
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- CN108169455A CN108169455A CN201711339927.8A CN201711339927A CN108169455A CN 108169455 A CN108169455 A CN 108169455A CN 201711339927 A CN201711339927 A CN 201711339927A CN 108169455 A CN108169455 A CN 108169455A
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- filling medium
- stress
- water
- tank
- loading device
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
Abstract
The invention belongs to Geotechnical Engineering fields, disclose a kind of filling medium true triaxial seepage failure laboratory and test method, including filling medium, stress loading device, sealing device and tank.The present invention is using stress loading device to the pressure of filling medium, its stress in underground watery fault crushed zone and folder mud fracture belt can effectively be simulated, and pass through sealing device and the water body that flow out from filling medium of tank control storage, so that guarantee test is smoothed out.Filling medium infiltration under the conditions of simulated ground stress, grasp its Percolation Law under the conditions of the rich water of underground, the seepage failure type gushing water cause calamity mechanism under the pregnant calamity pattern of mud of dashing forward is studied for people to be of great significance, appearance of the invention can effectively solve the problem that gushing water mud disaster of dashing forward causes calamity mechanism study problem present in.
Description
Technical field
The invention belongs to Geotechnical Engineering fields, are related to a kind of filling medium true triaxial seepage failure laboratory and side
Method.
Background technology
With the continuous development of China's underground engineering field, engineering gushing water mud disaster problem of dashing forward present in constantly causes
The attention of people.Gushing water mud of dashing forward refers to the phenomenon that a large amount of underground water or silt pour in roadway and tunnel.Gushing water dash forward mud work
One of disaster most threatening for underground engineering field brings huge personal injury and economic loss to the engineering field.
Research gushing water mud of dashing forward causes calamity mechanism, understands formation of marine disasters and Evolution, helps that gushing water is controlled to dash forward mud disaster to underground engineering
Influence.In fractured zones filling medium unstability be cause gushing water dash forward mud disaster generation major reason, study crustal stress item
Part retrofilling medium osmosis characteristic variations rule researches and develops the filling medium permeability test equipment under true triaxial loading environment, for
The dash forward formation mechenism of mud disaster of gushing water is probed into have great importance.
Invention content
Have in view of that, the purpose of the present invention is to provide a kind of filling medium true triaxial seepage failure laboratory, to promote
Under the conditions of crustal stress in fractured zones filling medium physical characteristic research.
For above-mentioned technical problem, a kind of filling medium true triaxial seepage failure laboratory provided by the invention, including filling
Fill out medium, stress loading device, sealing device and tank；
The filling medium is equipped with vertical stress loading dress in the top and bottom of filling medium for rectangular configuration
It puts, horizontal stress loading device is equipped in four sides of filling medium；And each stress loading device includes effect panel
And stress bar, it is set on the effect panel positioned at the vertical stress loading device of top surface there are one trepanning, by the hole to filling
Add water in medium；The trepanning on a certain effect panel of horizontal stress loading device, for installing sensor；The filling is situated between
Matter is arranged in a tank, and the stress bar of stress loading device passes through tank, and sealing is being equipped with across position
Device seals.
Further, the main body of the sealing device is rubber bellows, is pacified at the both ends of the rubber bellows
Equipped with ring flange, rubber bellows are fixed on by ring flange on stress bar and tank；Stress bar passes through rubber bellows
It is connected with effect panel, rubber pad is placed under the nut of fixed tank and ring flange to water proof.
Further, described rubber bellows one end is connected by ring flange I with stress bar, and the other end passes through ring flange
II is fixed on tank side wall；The movement of stress bar drives the extensional motion of rubber bellows during experiment, is sealing
It can be with proof stress bar energy proper motion while water body.Rubber rubber cushion is padded under the nut of mounting flange, to ensure device
Whole sealing effect.
Further, the filling medium size is the cuboid of 20cm × 6cm × 30cm.
Further, discharge water installations there are one being set in the lower part of the tank.
Specific experimental method is as follows：
During experiment, first, close tap, by filling medium be placed in upward vertical stress loading device effect panel it
On, in the place installation sensor of effect panel opening, sensor is detecting the physical characteristic of filling medium；Horizontal stress adds
Carry put effect panel and downward vertically stress loading device effect panel by power plant slowly close to filling medium, as
Power plant is closed when being against on filling medium with panel；
Then the water filling in filling medium by water filling port is substantially filled with entire filling medium in waterflow stabilization and water body
When, start power plant, stress is allowed to record sensor 4 during stress loading by effect panel squeeze pack medium
The signal of return；
Finally, after enough data have been obtained, stop flow to water filling port water filling, recall stress loading device, make
Filling medium is left with panel, records filling medium form at this time；
The water in tap releasing tank is opened, observes and records the muddy degree that water is released from tank.
In effect of the stress loading device to filling medium applied force, fortune of the movement with dynamic sealing device of stress bar
Dynamic, rubber bellows extend, and the water in tank is obstructed by rubber bellows inside tank.
Rubber bellows are driven when stress loading device pressure movement, it is made to generate the effect stretched.Rubber wave
Line pipe can ensure not interfering with the movement of stress bar while the water body in obstructing tank leaks.
Beneficial effects of the present invention are as follows：
Filling medium true triaxial seepage failure laboratory provided by the invention, including filling medium, stress loading device, close
Seal apparatus and tank.The experimental rig purpose of design is that filling medium dashes forward to underground engineering gushing water in research fractured zones
The influence of mud disaster, the present invention preferably simulate filling medium in crustal stress by the true triaxial stress loading device that six faces load
Under the conditions of stress, and devise rubber bellows ensure that stress loading device operating when can seal water storage
Water body in container.
Description of the drawings
The accompanying drawings which form a part of this application are used for providing further understanding of the present application, and the application's shows
Meaning property embodiment and its explanation do not form the improper restriction to the application for explaining the application.
Fig. 1 is this experimental rig configuration diagram；
Fig. 2 is sealing device schematic diagram；
Fig. 3 is stress loading schematic device；
Fig. 4 is sealing device, relative position relation schematic diagram between stress bar and effect panel；
In figure：1 filling medium, 2 effect panels, 3 stress bars, 4 sensors, 5 water filling ports, 6 sealing devices, 7 tanks,
8 taps, 6-1 ring flanges, 6-2 rubber bellows, 6-3 ring flanges.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.It is unless another
It indicates, all technical and scientific terms used herein has 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 specific 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 the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
As background technology is introduced, it is to lead to gushing water that filling medium unstability in fractured zones, which exists in the prior art,
The major reason that prominent mud disaster occurs, studies filling medium Penetration Signature changing rule under the conditions of crustal stress, and research and development true triaxial adds
Filling medium permeability test equipment under the conditions of load has great importance for probing into the dash forward formation mechenism of mud disaster of gushing water,
The technical issues of in order to solve as above, present applicant proposes a kind of filling medium true triaxial seepage failure laboratory and methods, are
Physical characteristic of the research filling medium under crustal stress effect provides thinking.
To be more clear technical solution general thought of the embodiment of the present invention, with reference to attached in the embodiment of the present invention
Figure, completely describes technical solution of the present invention.
A kind of filling medium true triaxial seepage failure laboratory is provided in the present invention, including：Filling medium, stress loading
Device, sealing device and tank.Filling medium is placed on stress loading device effect panel 2, and stress loading device is put
Among tank, when starting power plant, surrounding and top effect panel 2 can be close to filling mediums.
Stress loading device is divided into horizontal stress loading device and vertical stress loading device.Vertical stress loading device point
For vertical stress loading device and straight down vertical stress loading device straight up.
Stress loading device is made of effect panel 2 and stress bar 3, solid on horizontal stress bar 3 and vertically upward stress bar 3
Surely there is ring flange, to connect sealing device.
Straight down water filling port 5 is provided on vertical stress loading device effect panel 2；Horizontal stress loading device one side
Drive that there are three holes placing sensor 4 on plate.
Filling medium size is 20cm × 6cm × 30cm.
Sealing device 6 is made of ring flange 6-1,6-3 and rubber bellows 6-2；6 one end of sealing device passes through ring flange 6-
1 is connected with stress bar 3, and the other end is fixed on 7 side wall of tank by ring flange 6-3.The movement of stress bar 3 during experiment
The extensional motion of rubber bellows 6-2 is driven, it can be with 3 energy proper motion of proof stress bar while water body is sealed.Connection
Rubber rubber cushion is padded under the nut of ring flange, to ensure the sealing effect of device entirety.
Further, the main body of sealing device 6 is rubber bellows 6-2, is installed at the both ends of the rubber bellows
There are ring flange 6-1,6-3.As shown in figure 4, stress bar 3 passes through rubber bellows 6-2, and it is directly anchored to by modes such as welding
On ring flange 6-3, ring flange 6-3 is fixed on by nut on effect panel 2, and the ring flange 6-1 of 6 other end of sealing device passes through
Nut is fixed on the shell of whole device --- on tank 7, in the fixed place of nut (ring flange 6-3 and effect panel 2
Junction, ring flange 6-1 and 7 junction of tank) rubber pad is installed additional to ensure the sealing effect of whole device.Ring flange 6-
1 with tank 7 is fixed, and ring flange 6-3, effect panel 2 and stress bar 3 can move.Test applied force lotus
During load, the direction of ring flange 6-2, effect panel 2 and from stress bar 3 to squeeze pack medium 1 move, ring flange 6-3 with
Relative motion occurs for ring flange 6-2, and the rubber bellows 6-2 of mounting flange 6-3 and ring flange 6-1 does stretching motion at this time.
7 lower part of tank is provided with tap 8, to discharge the water body in tank 7.
Specific experimental method is as follows：
During experiment, first, tap 8 is closed, filling medium 1 is placed in upward vertical stress loading device effect panel
On 2, in the place installation sensor 4 of effect panel opening, sensor 4 is detecting the physical characteristic of filling medium 1；It is horizontal
Stress loading device effect panel 2 and downward vertically stress loading device effect panel 2 are by power plant slowly close to filling
Medium 1 closes power plant when effect panel is against on filling medium 1；
Then entire filling medium is substantially filled in waterflow stabilization and water body to 1 inner water filling of filling medium by water filling port 5
When 1, start power plant, stress is allowed to record sensing during stress loading by 2 squeeze pack medium of effect panel
The signal that device 4 returns.
Finally, after enough data have been obtained, stop flow to 5 water filling of water filling port, recall stress loading device, make
Filling medium 1 is left with panel 2, records 1 form of filling medium at this time.
The water in the releasing tank 7 of tap 8 is opened, observes and records the muddy degree that water is released from tank 7.
In effect of the stress loading device to 1 applied force of filling medium, the movement of stress bar 3 is with dynamic sealing device 6
Movement, rubber bellows 6-2 extend, and the water in tank 7 is obstructed by rubber bellows 6-2 inside tank 7.
In conclusion the present invention realizes the filling medium under the conditions of simulated ground stress by true triaxial stress loading device
Permeability test can effectively probe into change in physical properties of the filling medium under water and crustal stress effect in underground fracture crushed zone
Rule is of great significance for research gushing water mud disaster genesis mechanism of dashing forward.
The foregoing is merely the preferred embodiments of the application, are not limited to the application, for the skill of this field
For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair
Change, equivalent replacement, improvement etc., should be included within the protection domain of the application.
Claims (8)
1. a kind of filling medium true triaxial seepage failure laboratory, which is characterized in that including filling medium, stress loading device,
Sealing device and tank；
The filling medium is equipped with vertical stress loading device for rectangular configuration, in the top and bottom of filling medium,
Four sides of filling medium are equipped with horizontal stress loading device；And each stress loading device includes effect panel and stress
Bar is set on the effect panel positioned at the vertical stress loading device of top surface there are one trepanning, by the hole into filling medium
Add water；The trepanning on a certain effect panel of horizontal stress loading device, for installing sensor；The filling medium setting
In a tank, and the stress bar of stress loading device passes through tank, close being equipped with sealing device across position
Envelope.
2. filling medium true triaxial seepage failure laboratory as described in claim 1, which is characterized in that the sealing device
Main body for rubber bellows, ring flange is installed at the both ends of the rubber bellows, rubber bellows pass through ring flange
It is fixed on stress bar and tank；Stress bar is connected across rubber bellows with effect panel, fixed tank and method
Rubber pad is placed under the nut of blue disk to water proof.
3. filling medium true triaxial seepage failure laboratory as described in claim 1, which is characterized in that the rubber corrugated
Pipe one end is connected by ring flange I with stress bar, and the other end is fixed on by ring flange II on tank madial wall；It tested
The movement of stress bar drives the extensional motion of rubber bellows in journey, can be just with proof stress bar while water body is sealed
Often movement.
4. filling medium true triaxial seepage failure laboratory as described in claim 1, which is characterized in that the mounting flange
Nut under to pad rubber rubber cushion, ensure the sealing effect of device entirety.
5. filling medium true triaxial seepage failure laboratory as described in claim 1, which is characterized in that the filling medium
Size is the cuboid of 20cm × 6cm × 30cm.
6. filling medium true triaxial seepage failure laboratory as described in claim 1, which is characterized in that hold in the water storage
Water installations are discharged there are one setting in the lower part of device.
7. the test method of the filling medium true triaxial seepage failure laboratory as described in claim 1-6 is any, feature exist
In,
During experiment, first, tap is closed, filling medium is placed on upward vertical stress loading device effect panel,
In the place installation sensor of effect panel opening, sensor is detecting the physical characteristic of filling medium；Horizontal stress loads
Device effect panel and downward vertically stress loading device effect panel, slowly close to filling medium, work as effect by power plant
Power plant is closed when panel is against on filling medium；
Then the water filling in filling medium by water filling port, when waterflow stabilization and water body are substantially filled with entire filling medium
It waits, starts power plant, allow stress by effect panel squeeze pack medium, sensor 4 is recorded during stress loading and is returned
The signal returned；
Finally, after enough data have been obtained, stop flow to water filling port water filling, recall stress loading device, acting surface
Plate leaves filling medium, records filling medium form at this time；
The water in tap releasing tank is opened, observes and records the muddy degree that water is released from tank.
8. test method as claimed in claim 7, which is characterized in that
In effect of the stress loading device to filling medium applied force, movement of the movement with dynamic sealing device of stress bar, rubber
Glue bellows extends, and the water in tank is obstructed by rubber bellows inside tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711339927.8A CN108169455B (en) | 2017-12-14 | 2017-12-14 | Filling medium true triaxial penetration instability test room and test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711339927.8A CN108169455B (en) | 2017-12-14 | 2017-12-14 | Filling medium true triaxial penetration instability test room and test method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108169455A true CN108169455A (en) | 2018-06-15 |
| CN108169455B CN108169455B (en) | 2020-11-06 |
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ID=62525372
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711339927.8A Active CN108169455B (en) | 2017-12-14 | 2017-12-14 | Filling medium true triaxial penetration instability test room and test method |
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| Country | Link |
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Cited By (2)
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| CN109932299A (en) * | 2019-03-20 | 2019-06-25 | 山东大学 | Infiltration experiment device and method under the conditions of a kind of simulated ground stress |
| CN114383950A (en) * | 2022-01-11 | 2022-04-22 | 中国矿业大学 | Semi-consolidated loose body in-situ experimental method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109932299A (en) * | 2019-03-20 | 2019-06-25 | 山东大学 | Infiltration experiment device and method under the conditions of a kind of simulated ground stress |
| CN109932299B (en) * | 2019-03-20 | 2020-08-25 | 山东大学 | Penetration test device and method under simulated ground stress condition |
| CN114383950A (en) * | 2022-01-11 | 2022-04-22 | 中国矿业大学 | Semi-consolidated loose body in-situ experimental method |
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| Publication number | Publication date |
|---|---|
| CN108169455B (en) | 2020-11-06 |
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