CN108871931A - A kind of flange form SHPB filling liquid jointed rock mass liquid sample bringing device and method - Google Patents
A kind of flange form SHPB filling liquid jointed rock mass liquid sample bringing device and method Download PDFInfo
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- CN108871931A CN108871931A CN201810572072.1A CN201810572072A CN108871931A CN 108871931 A CN108871931 A CN 108871931A CN 201810572072 A CN201810572072 A CN 201810572072A CN 108871931 A CN108871931 A CN 108871931A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
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Abstract
The present invention provides a kind of flange form SHPB filling liquid jointed rock mass liquid sample bringing devices, including pressure-bearing cavity device and liquid bringing device；The pressure-bearing cavity device includes the metal cavity shell an of integral forming structure, the hole for placing sample is arranged in the two sides of the metal cavity shell, the two sides of the metal cavity shell are respectively fixedly connected with metal flange, annular groove is set with the contact position of sample on the inside of the metal flange, setting covers the first seal on sample in the annular groove, observation window is arranged in the sidewall locations of the metal cavity shell, and high speed video camera is arranged at the observation window.The present invention also provides a kind of flange form SHPB filling liquid jointed rock mass liquid sample applying methods.A kind of flange form SHPB filling liquid jointed rock mass liquid sample bringing device and method provided by the invention, not only fill liquid type diversification, and device is convenient for assembly and disassembly, it can also liquid leakage in anti-locking apparatus, and the dynamic changing process of sample and liquid is observed, dynamic rock mechanics dependence test task can be completed well.
Description
Technical field
The present invention relates to dynamic rock mechanics experimental technique field, in particular to a kind of flange form SHPB filling liquid jointed rock mass
Liquid sample bringing device and its applying method.
Background technique
In underground engineering or hydraulic engineering, the dynamic loads such as earthquake or explosion can cause the generation and propagation of stress wave,
Engineering is impacted.Joint is relatively conventional in natural rock mass, and be mostly filling joint, packing material can for gravel, clay,
The substances such as water, oil.The research of stress wave propagation law in filling joint, has safety of rock engineering prediction and evaluation important
Meaning.It is more abundant as the research of filler to solid or solid and liquid mixture at present, but be seldom related to liquid and fill
Filling chock material is probed into.
Therefore it works for the dynamic test of filling liquid jointed rock mass situation, it appears particularly important.Current dynamic rock mechanics examination
In test examination, split hopkinson press bar equipment application is extensive, but assists the dynamic test equipment, to probe into rock mass sample
The device for applying liquid case at joint plane is seldom, cannot meet the need of dynamic rock mechanics experimental study and Practical Project well
It wants.
Current SHPB filling liquid jointed rock mass liquid sample bringing device, the metal shell of pressure-bearing cavity device are divided into
Two parts, it is more convenient in installation sample.But due to connecing for two parts stitching portion of metal shell and sample and metal shell
Synapsis sealing effect is poor, and it is easy to appear fluid seepage problems in pressure test process, to influence dynamic rock mechanics
Test effect.Further, since Sample devices are enclosed system, sample and liquid under Impact Load cannot be observed well
Dynamic changing process.
Summary of the invention
Fluid seepage can be prevented technical problem to be solved by the invention is to provide one kind and can observe sample and liquid
The flange form SHPB of body dynamic changing process filling liquid jointed rock mass liquid sample bringing device, it is dynamic preferably to complete rock
Mechanics dependence test task.
It is applied in order to solve the above technical problems, the present invention provides a kind of flange form SHPB with filling liquid jointed rock mass liquid sample
Feeder apparatus, including pressure-bearing cavity device and liquid bringing device, the pressure-bearing cavity device include an integral forming structure
The hole for placing sample is arranged in metal cavity shell, the two sides of the metal cavity shell, the metal cavity shell
Two sides are respectively fixedly connected with metal flange, and the sample end passes through the metal flange and fixed by metal flange
Annular groove, the annular groove are set with the contact position of sample on the inside of metal cavity shell two sides, the metal flange
Interior setting covers the first seal on sample, and the side wall of the metal cavity shell is arranged observation window, sets at the observation window
High speed video camera is set, the high speed video camera is connect with image capture device.
Further, the metal flange is detachably connected by metal screws and the metal cavity shell.
Further, the observation window is made of high-strength armoured-glass, is arranged by second seal in the gold
Belong on shell cavity side wall.
Further, the sample is two cylindrical type samples, and described sample one end is separately mounted to the metal cavity
On shell, the other end is contacted with the input lever of split hopkinson press bar equipment and output rod respectively.
Further, position scale line is set on the sample, and the first seal needs to be arranged in place according to test
Set the predetermined position of graduation mark.
Further, the first seal is rubber seal.
Further, the second seal is rubber seal.
Further, the liquid bringing device includes static pressure meter, and liquid booster pump is arranged in metal cavity shell
The liquid booster pump end valve of upper end, setting metal cavity shell lower end, can to metal cavity it is envelope filled enter packing fluid
The liquid of body passes in and out valve, the dynamic liquid pressure transducer of the metal cavity interior of shell is arranged in, and move with described
The dynamic signal analyzer that state liquid pressure sensor is connected by conducting wire, liquid booster pump end valve and the liquid
Booster pump is connected by conduit.
Further, the fill liquid is water, aqueous solution, oil or other fluent materials.
The present invention also provides a kind of applying methods of flange form liquid bringing device, include the following steps：
According to test needs, sealing element is placed to the predetermined position on the position scale line of sample；
Sample one end is respectively protruding into metal cavity shell, installation metal flange makes sealing element be accommodated in metal flange
Annular groove in, tighten metal screws squeeze sealing member and the junction of sample and metal cavity shell sealed；
Metal cavity shell is placed in split hopkinson press bar equipment, make the other end of sample respectively with input lever
It is contacted with output rod；
It is filled with fill liquid into metal cavity shell through liquid disengaging valve, closing liquid passes in and out valve after liquid is full of
Door；
Start liquid booster pump applies pressure into metal cavity shell, after pressure reaches test request, closes booster pump
End valve and liquid booster pump；
Split hopkinson press bar equipment is debugged and started, dynamic test test is carried out to sample.
A kind of flange form SHPB filling liquid jointed rock mass liquid sample bringing device and its applying method provided by the invention,
On the basis of existing dynamic rock mechanics sample widely applied split hopkinson press bar testing equipment, filled using pressure-bearing cavity
It sets and accommodates artificial jointed rock mass sample and observe sample with liquid dynamic changing process, using liquid bringing device to artificial joint
Rock mass sample carries out liquid-filled, increase pressure and hydraulic pressure measure, and water, aqueous solution, oil or other fluent materials are applied in realization
Add, and then realize the Impulsive load of filling liquid jointed rock mass sample, can more fully probe into stress wave and filling liquid jointed rock mass
Interaction rule.Also, the metal cavity shell of pressure-bearing cavity device is integral forming structure, with metal cavity cage connection
Metal flange on the inside of annular groove in be arranged sealing element, when tightening metal screws, can to sealing element apply squeezing action,
To make pressure-bearing cavity device can achieve a better sealing effect, not only fill liquid type diversification, and also device is convenient for
Assembly and disassembly, can also liquid leakage in anti-locking apparatus can be more intuitive in addition, introduce observation window and high speed video camera
The dynamic changing process of sample and liquid under Impact Load is observed on ground, can complete dynamic rock mechanics dependence test well
Task.
Detailed description of the invention
Fig. 1 is a kind of flange form SHPB filling liquid jointed rock mass liquid sample bringing device provided in an embodiment of the present invention
Overall schematic；
Fig. 2 is a kind of flange form SHPB filling liquid jointed rock mass liquid sample bringing device provided in an embodiment of the present invention
Transverse sectional view；
Fig. 3 is a kind of flange form SHPB filling liquid jointed rock mass liquid sample bringing device provided in an embodiment of the present invention
Observation window structural schematic diagram；
Fig. 4 is a kind of flange form SHPB filling liquid jointed rock mass liquid sample bringing device provided in an embodiment of the present invention
Metal flange structural schematic diagram；
Fig. 5 is that a kind of flange form SHPB filling liquid jointed rock mass liquid sample bringing device provided in an embodiment of the present invention is matched
Cover the artificial jointed rock mass sample structure schematic diagram used.
Specific embodiment
Referring to Fig. 1, a kind of flange form SHPB filling liquid jointed rock mass liquid sample application dress provided in an embodiment of the present invention
It sets, is accommodated including the end to the sample, observes sample with the pressure-bearing cavity device of liquid change procedure and to described
Sample carries out liquid bringing device that is liquid-filled, applying pressure and liquid pressure monitoring.Wherein, the pressure-bearing cavity device
Including metal cavity shell 1, metal flange 2, metal screws 3, first seal 4, observation window 7, high speed video camera 8, figure
As acquisition equipment 9, the liquid bringing device includes the liquid booster pump end valve that 1 upper end position of metal cavity shell is arranged in
Door 11, is laid on liquid booster pump 14 liquid booster pump 14 being connected through conduit 12 with liquid booster pump end valve 11
Static pressure meter 13, be arranged in 1 lower end position of metal cavity shell liquid disengaging valve 19, be set to metal cavity shell
The dynamic liquid pressure transducer 16 of 1 inside, the Dynamic Signal point being connect with dynamic liquid pressure transducer 16 by conducting wire 17
Analyzer 18 can pass in and out valve 19 by liquid in metal cavity shell 1 and be full of fill liquid 10.It is arranged in metal cavity shell
Liquid booster pump end valve 11 and the liquid booster pump 14 of 1 upper end position are used in conjunction with, convenient for adjusting in metal cavity shell 1
Liquid pressure increase and release, to realize the application of difference pressure magnitude at 5 joint plane position of sample.Outside sample 5
First seal 4 is arranged in side, and as a kind of specific embodiment of the invention, first seal 4 uses rubber seal.Metal
Hole is arranged in the two sides of shell cavity 1, and 5 one end of sample is separately mounted in hole, and metal flange 2 is passed through metal spiral shell
Silk 3 is mounted on 1 two sides of metal cavity shell, plays fixed function to sample 5.The liquid bringing device cloth of sample 5 will be installed
In split hopkinson press bar equipment, propagating the incident stress wave come through input lever 6 can be by object to be measured, and continues
It is propagated by output rod 15, the resistance strain gage being laid on input lever 6 and output rod 15 in advance can be to stress wave propagation
Caused signal intensity is collected record, convenient for the analysis of follow-up driving force experimental test result.
Wherein, sample 5 is the artificial jointed rock mass sample of two sections of cylindrical shapes, is placed in 1 two terminal circle of metal cavity shell
In the hole in face, when artificial jointed rock mass sample 5 is together with liquid bringing device, it is placed in split hopkinson press bar equipment
When middle, expose metal cavity shell 1 artificial jointed rock mass sample 5 both ends respectively with split hopkinson press bar equipment
Input lever 6 is contacted with output rod 15.And will form contact surface between two sections of cylindric artificial jointed rock mass samples 5, the contact surface
As manual simulation's ROCK MASS JOINT face, it is full of in the joint plane and end localized positions of artificial jointed rock mass sample 5 to be filled
Liquid 10.Fill liquid 10 can be water, such as tap water, salt water, can also be oil, such as petroleum, can also be in Practical Project
Other kind of liquid that may relate to.
Referring to fig. 2, one end of artificial jointed rock mass sample 5 is surrounded by fill liquid 10, is both arranged in metal cavity
In shell 1.
Referring to Fig. 3, observation window 7 is provided on the side wall of the metal cavity shell 1, observation window 7 is using high-strength armoured
Glass is made, and is fixed on metal cavity shell 1 by second seal 20, as a kind of specific embodiment of the invention,
Second seal 20 is rubber system air locking.It is provided with high speed video camera 8 at 7 position of observation window, to record impact
The dynamic changing process of sample and liquid under load action.Pass through the image recording of specimen surface changing features situation, Ke Yiyou
The generation of micro-crack etc., evolutionary phase information are analyzed in effect ground, deduce crack growth overall process, deepen to ring rock power
The understanding answered；By the observation to hydrodynamic condition, fill liquid dynamic response change procedure more can be intuitively studied,
Disclose fill liquid characteristics of fluid state.For the interaction rule further probed between artificial jointed rock mass sample 5 and fill liquid 10
Rule lays the foundation.
Referring to fig. 4,2 inside of metal flange and the contact position of sample 5 are provided with the annular to match with first seal 4
Slot 21 will cover the on artificial jointed rock mass sample 5 when installing artificial jointed rock mass sample 5 on metal cavity shell 1
One sealing element 4 is accommodated in the annular groove 21 of metal flange 2, and annular groove 21 can limit the position of first seal 4, when stubborn
When tight metal screws 3, by the fixation and squeezing action of metal flange 2, first seal 4 can be made closely to be fitted in artificial
The fluid tightness of enhancement device is capable of in the periphery of jointed rock mass sample 5, can effectively prevent fill liquid 10 outside metal cavity
Shell 1 and the contact position gap of sample 5 are leaked to outside pressure-bearing shell device, are realized first seal 4 and are tried artificial jointed rock mass
The excellent sealing effect of sample 5 and 1 contact position of metal cavity shell.
Referring to Fig. 5, label has line 22 on the artificial jointed rock mass sample 5, can need in conjunction with test, will
Sealing element 4 is arranged in the axial specific position of artificial jointed rock mass sample 5.
A kind of flange form SHPB provided in an embodiment of the present invention filling liquid jointed rock mass liquid sample bringing device, with originally
For water is as fill liquid 10, working principle and the course of work are specific as follows：
Firstly, binding test needs, rubber seal 4 is laid in the axial specific position of artificial jointed rock mass sample 5,
Metal cavity shell 1 is protruded into the end of artificial jointed rock mass sample 5, metal flange 2 is passed through into artificial jointed rock mass sample
5, screw hole site is adjusted, metal flange 2 is fixed using metal screws 3, completes the splicing of pressure-bearing shell device
Assembly working.Then, the pressure-bearing shell device that will place artificial jointed rock mass sample 5 is placed in separate type Hopkinson pressure
On bar testing equipment, by input lever 6 and output rod 15 respectively with two artificial jointed rock mass samples exposing metal cavity shell 1
5 end face is contacted.Then, the liquid disengaging valve 19 that 1 lower end position of metal cavity shell is set is opened, by packing fluid
Body 10 is tap water at this, injects in pressure-bearing shell device that, until liquid is full of after device, closing liquid passes in and out valve 19, makes
With liquid booster pump 14, pressure is applied into pressure-bearing shell device by connecting conduit 12, by being laid in liquid booster pump 14
On static pressure meter 13 monitor the pressure change in pressure-bearing shell device, after test request pressure values to be achieved, close liquid
Body booster pump end valve 11 and liquid booster pump 14, the liquid for so far completing artificial jointed rock mass sample 5 apply work.Most
Afterwards, split hopkinson press bar equipment is debugged and started, so that input lever 6 impacts artificial jointed rock mass sample 5, is answered
Reeb is by reaching output rod 15 after artificial jointed rock mass sample 5, by being mounted on 1 side wall observation window 7 of metal cavity shell
High speed video camera 8, the resistance strain gage being laid on input lever 6 and output rod 15, and be set to the metal cavity
Dynamic liquid pressure transducer 16 on the inside of shell acquires the state change of process with signal sequence in real time, records and whole
Test data is managed, dynamic rock mechanics experimental test task is completed.
A kind of flange form SHPB filling liquid jointed rock mass liquid sample bringing device and method provided by the invention, not only fill
Fill out kind of liquid diversification, and device is convenient for assembly and disassembly, can also liquid leakage in anti-locking apparatus, in addition, observation window with
The introducing of high speed video camera more can intuitively observe the dynamic changing process of sample and liquid under Impact Load,
Dynamic rock mechanics dependence test task can be completed well.
It should be noted last that the above specific embodiment is only used to illustrate the technical scheme of the present invention and not to limit it,
Although being described the invention in detail referring to example, those skilled in the art should understand that, it can be to the present invention
Technical solution be modified or replaced equivalently, without departing from the spirit and scope of the technical solution of the present invention, should all cover
In the scope of the claims of the present invention.
Claims (10)
1. a kind of flange form SHPB filling liquid jointed rock mass liquid sample bringing device, including pressure-bearing cavity device and liquid apply
Device；It is characterized in that：The pressure-bearing cavity device includes the metal cavity shell (1) an of integral forming structure, the gold
The hole for placing sample (5) is arranged in the two sides for belonging to shell cavity (1), and the two sides of the metal cavity shell (1) are solid respectively
Surely metal flange (2) are connected, sample (5) end passes through the metal flange (2) and solid by metal flange (2)
Metal cavity shell (1) two sides are scheduled on, annular groove is arranged in the contact position of metal flange (2) inside and sample (5)
(21), setting covers the first seal (4) on sample (5), the side of the metal cavity shell (1) in the annular groove (21)
Observation window (7) are arranged in wall, and high speed video camera (8) are arranged at the observation window (7), the high speed video camera (8) and image
Acquire equipment (9) connection.
2. flange form SHPB according to claim 1 filling liquid jointed rock mass liquid sample bringing device, it is characterised in that：
The metal flange (2) is detachably connected by metal screws (3) with the metal cavity shell (1).
3. flange form SHPB according to claim 1 filling liquid jointed rock mass liquid sample bringing device, it is characterised in that：
The observation window (7) is made of high-strength armoured-glass, is arranged by second seal (20) in the metal cavity shell
(1) on side wall.
4. flange form SHPB according to claim 2 filling liquid jointed rock mass liquid sample bringing device, it is characterised in that：
The sample (5) is two cylindrical type samples, and described sample (5) one end is separately mounted on the metal cavity shell (1), separately
One end is contacted with the input lever of split hopkinson press bar equipment (6) and output rod (15) respectively.
5. flange form SHPB according to claim 3 filling liquid jointed rock mass liquid sample bringing device, it is characterised in that：
Position scale line (22) are set on the sample (5), the first seal (4) needs to be arranged in position graduation mark according to test
(22) predetermined position.
6. flange form SHPB according to claim 1-5 filling liquid jointed rock mass liquid sample bringing device,
It is characterized in that：The first seal (4) is rubber seal.
7. flange form SHPB according to claim 1-5 filling liquid jointed rock mass liquid sample bringing device,
It is characterized in that：The second seal (20) is rubber seal.
8. flange form SHPB according to claim 1 filling liquid jointed rock mass liquid sample bringing device, it is characterised in that：
The liquid bringing device includes static pressure meter (13), and liquid booster pump (14) is arranged in metal cavity shell (1) upper end
Liquid booster pump end valve (11) is arranged in metal cavity shell (1) lower end, can be filled with into metal cavity shell (1)
The dynamic liquid pressure sensing internal in the metal cavity shell (1) is arranged in liquid disengaging valve (19) for filling out liquid (10)
Device (16), and pass through the dynamic signal analyzer (18) that conducting wire (17) are connect with the dynamic liquid pressure transducer (16),
Liquid booster pump end valve (11) is connect with the liquid booster pump (14) by conduit (12).
9. flange form SHPB according to claim 1 filling liquid jointed rock mass liquid sample bringing device, it is characterised in that：
The fill liquid (10) is water, aqueous solution, oil or other fluent materials.
10. a kind of applying method of the described in any item flange form liquid bringing devices of claim 1-9, which is characterized in that packet
Include following steps：
According to test needs, first seal (4) is placed to the predetermined position on the position scale line (22) of sample (5)；
Sample (5) one end is respectively protruding into metal cavity shell (1), installation metal flange (2) accommodates first seal (4)
In the annular groove (21) of metal flange (2), tightens metal screws (3) and squeeze first seal (4) to sample (5) and metal
The junction of shell cavity (1) seals；
Metal cavity shell (1) is placed in split hopkinson press bar equipment, make the other end of sample (5) respectively with input
Bar (6) and output rod (15) contact；
It is filled with fill liquid (10) in metal cavity shell (1) through liquid disengaging valve (19), closes liquid after liquid is full of
Body passes in and out valve (19)；
Start liquid booster pump (14) applies pressure into metal cavity shell (1), after pressure reaches test request, closes pressurization
Pump end valve (11) and liquid booster pump (14)；
Split hopkinson press bar equipment is debugged and started, dynamic test test is carried out to sample (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810572072.1A CN108871931B (en) | 2018-06-05 | 2018-06-05 | Liquid-filled jointed rock mass sample liquid application device and method for flange type SHPB (split-type Rockwell) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810572072.1A CN108871931B (en) | 2018-06-05 | 2018-06-05 | Liquid-filled jointed rock mass sample liquid application device and method for flange type SHPB (split-type Rockwell) |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108871931A true CN108871931A (en) | 2018-11-23 |
| CN108871931B CN108871931B (en) | 2019-12-24 |
Family
ID=64336748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810572072.1A Active CN108871931B (en) | 2018-06-05 | 2018-06-05 | Liquid-filled jointed rock mass sample liquid application device and method for flange type SHPB (split-type Rockwell) |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108871931B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114383949A (en) * | 2021-12-09 | 2022-04-22 | 北京科技大学 | Method for testing bearing capacity and energy dissipation rule of rock mass with cavity |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114383949A (en) * | 2021-12-09 | 2022-04-22 | 北京科技大学 | Method for testing bearing capacity and energy dissipation rule of rock mass with cavity |
| CN114383949B (en) * | 2021-12-09 | 2024-04-16 | 北京科技大学 | Method for testing bearing capacity and energy dissipation rule of rock mass containing cavity |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108871931B (en) | 2019-12-24 |
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