CN106404519A - Test device for splitting tensile fracture under impact-static-hydraulic coupling effect of rock and test method - Google Patents
Test device for splitting tensile fracture under impact-static-hydraulic coupling effect of rock and test method Download PDFInfo
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- CN106404519A CN106404519A CN201611173490.0A CN201611173490A CN106404519A CN 106404519 A CN106404519 A CN 106404519A CN 201611173490 A CN201611173490 A CN 201611173490A CN 106404519 A CN106404519 A CN 106404519A
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- 238000012360 testing method Methods 0.000 title claims abstract description 35
- 239000011435 rock Substances 0.000 title claims abstract description 33
- 230000001808 coupling effect Effects 0.000 title abstract description 6
- 238000010998 test method Methods 0.000 title 1
- 230000003068 static effect Effects 0.000 claims abstract description 58
- 238000011068 loading method Methods 0.000 claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- 230000005540 biological transmission Effects 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 4
- 238000004458 analytical method Methods 0.000 claims abstract description 3
- 230000008878 coupling Effects 0.000 claims description 15
- 238000010168 coupling process Methods 0.000 claims description 15
- 238000005859 coupling reaction Methods 0.000 claims description 15
- 239000011888 foil Substances 0.000 claims description 5
- 230000007246 mechanism Effects 0.000 abstract description 2
- 238000002474 experimental method Methods 0.000 description 11
- 238000003776 cleavage reaction Methods 0.000 description 4
- 230000007017 scission Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
Classifications
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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
- G01N3/02—Details
-
- 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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
-
- 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
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
- G01N3/307—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated by a compressed or tensile-stressed spring; generated by pneumatic or hydraulic means
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a test device for splitting tensile fracture under an impact-static-hydraulic coupling effect of rock. The test device comprises a pressing rod device and a hydraulic loading device, wherein the hydraulic loading device comprises a hydraulic loading pressing head, a circular ring clamp, a connecting pipe and a pressurizing pump; the circular ring clamp is connected with a base fixed on the pressing rod device through a brace; the hydraulic loading pressing head is fixed in the circular ring clamp; a water outlet in an end face of the hydraulic loading pressing head is communicated with a water inlet in a side wall; the water inlet in the side wall of the hydraulic loading pressing head is connected with the pressurizing pump through the connecting pipe. In a test process, a tested piece is firstly fixed between an incidence rod and a transmission rod along a radial direction, an axial static loading device is utilized to apply static pressure to the tested piece, then hydraulic pressure is applied to the two axial ends of the tested piece, the pressurizing pump with a pressure gage is used for adjusting the hydraulic pressure to a preset value, and then a high-pressure air bottle is utilized to drive a bullet to strike the incidence rod so as to break the tested piece and lastly the data is collected for treatment analysis. According to the invention, the dynamic mechanic characteristics of the splitting tensile fracture of the rock under the impact-static-hydraulic coupling effect can be effectively researched. The test device provided by the invention has guiding significance for evaluating the damaging mechanism of the water-containing rock under dynamic and static loads.
Description
Technical field
The present invention relates to a kind of Rock Mechanics Test device and experimental technique, more particularly, to a kind of quiet for rock impact
Under the pressure coupling of power waterpower, Brazilian tension destroys mechanical testing equipment and experimental technique.
Background technology
Rock belongs to anisotropic material, is embodied in micro-crack, space, joint and hole of the distribution of its internal random etc. and lacks
On falling into, and because Tensile Strength of Rock is far below compression strength, and the change of the basement rock structure of Hydraulic and Hydro-Power Engineering and mining production
Shape destroys the tensile mechanical properties being often depending on rock.In deep mining operation, rock is subject to certain static stress simultaneously and opens
Adopt the dynamic loadings such as disturbance or even earthquake impact when, also suffer from the impact of underground water, rock can be acted in the form of hydraulic pressure
Stone.Under water rock coupling, the deformation of rock mass, damage and failure and stability have become asking of the common concern of scientific research and engineering field
Topic.At present, existing laboratory experiment can be only done rock cleavage tensile failure Experiments of Machanics research under Dynamic And Static Loads effect, does not have
There is consideration this factor of hydraulic pressure and destroy mechanical testing equipment and experiment side it is impossible to carrying out Dynamic And Static Loads and coupling Brazilian tension with hydraulic pressure
Method, has been caused to be appreciated more fully from Dynamic And Static Loads and has been coupled down rock cleavage tensile failure mechanical characteristic with hydraulic pressure and destroy shape
State.
Content of the invention
It is an object of the invention to provide a kind of fill for rock impact static(al) Seepage-stress coupling Brazilian tension failure test
Put and experimental technique, solve rock cleavage stretching under the impact static(al) hydraulic coupling action that can not carry out in prior art broken
Bad mechanical test is destroyed mechanical characteristic and is destroyed shape it is impossible to understand impact static(al) Rock Concerning Hydromechanical Coupling Brazilian tension in depth
The technical problem of state.
The technical solution adopted in the present invention is：A kind of rock impact static(al) Seepage-stress coupling Brazilian tension that is used for destroys
Experimental rig, including strut device, this strut device include hyperbar tank, sub warhead, incident bar, foil gauge, data collecting instrument,
Transmission bar and axial static pressure charger, described experimental provision includes Water hydraulic static pressure loading device, and this Water hydraulic static pressure loading device includes hydraulic pressure
Load pressure head, annulus fixture, connecting tube and force (forcing) pump, described annulus fixture passes through pillar and the base being fixed on strut device
It is connected, Water hydraulic static pressure loading pressure head is fixed in annulus fixture, the water inlet on the apopore on Water hydraulic static pressure loading pressure head end face and side
Hole communicates, and the inlet opening on Water hydraulic static pressure loading pressure head side is connected by connecting tube with force (forcing) pump.
Preferably, being provided with pressure gauge on described force (forcing) pump.
Preferably, described pillar is welded on base, annulus fixture and pillar pass through to be welded to connect.
A kind of rock impact static(al) Seepage-stress coupling Brazilian tension based on above-mentioned experimental provision destroys Experiments of Machanics side
Method, its step is as follows：
First by radially fixed for test specimen between incident bar and transmission bar, using axial static pressure charger, test specimen is applied quiet
Then test specimen axial direction two ends are applied hydraulic pressure by pressure, and adjust hydraulic pressure to predetermined value, Ran Houtong by being provided with manometric force (forcing) pump
Crossing high pressure gas holder drives sub warhead shock incident bar so that test specimen is destroyed, and last gathered data carries out Treatment Analysis.
Compared with prior art, it is an advantage of the invention that：The present invention is applied to test specimen radial direction by axial static pressure charger
Plus static pressure, predetermined hydraulic pressure value is applied to test specimen axial direction two ends by Water hydraulic static pressure loading device, bullet is driven by high pressure gas holder simultaneously
Incident bar is hit in butt, completes to apply dynamic loading to test specimen, and experiment indoors can be studied under Dynamic And Static Loads and hydraulic pressure effect well
Rock cleavage tensile failure dynamic characteristics and damage -form, have to evaluating aqueous rock mass failure mechanism under Dynamic And Static Loads
Certain directive significance.Experimental provision structure in the present invention is simple simultaneously, and easy to operate, experiment effect is good and can reuse,
Energy-conserving and environment-protective.
Brief description
Fig. 1 is rock impact static(al) Seepage-stress coupling Brazilian tension failure test apparatus structure schematic diagram of the present invention.
Fig. 2 is Water hydraulic static pressure loading device front view of the present invention.
Fig. 3 is annulus fixture left view of the present invention.
In figure：1st, test specimen；2nd, sub warhead；3rd, incident bar；4th, transmission bar；5th, high pressure gas holder；6th, foil gauge；7th, data acquisition
Instrument；8th, axial static pressure charger；9th, Water hydraulic static pressure loading pressure head；10th, annulus fixture；11st, connecting tube；12nd, it is provided with manometric adding
Press pump；13rd, pillar；14th, bolt；15th, base；16th, apopore；17th, inlet opening；18th, connect pipe joint.
Specific embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings.
As shown in Figure 1, 2, 3, a kind of rock impact static(al) Seepage-stress coupling Brazilian tension that is used for destroys Experiments of Machanics dress
Put including：Base 15, Hopkinson pressure bar device and Water hydraulic static pressure loading device, described Hopkinson pressure bar device by hyperbar tank 5,
Sub warhead 2, incident bar 3, foil gauge 6, data collecting instrument 7, transmission bar 4 and axial static pressure charger 8 form, in this embodiment party
In formula, test specimen 1 is radially clipped between incident bar 3 and transmission bar 4, firmly tension incident bar 3 and transmission bar 4 clamping test specimen 1, bottom
Seat 15 is fixed on Hopkinson pressure bar device by 4 bolts 14, and Water hydraulic static pressure loading device is fixed on base 15 by pillar 13
On, by being welded on base 15, described Water hydraulic static pressure loading device includes Water hydraulic static pressure loading pressure head 9, annulus fixture 10, connects pillar 13
Pipe 11, connect pipe joint 18 and be provided with manometric force (forcing) pump 12, in the present embodiment, Water hydraulic static pressure loading pressure head 9 is fixed on circle
In ring fixture 10, the apopore 16 on Water hydraulic static pressure loading pressure head 9 end face is connected to logical, connecting tube 11 with the inlet opening 17 on side
Two ends are provided with connection pipe joint 18, and one end connects the inlet opening 17 on Water hydraulic static pressure loading pressure head 9 side, and the other end is connected with pressure
The force (forcing) pump 12 of table, annulus fixture 10 and pillar 13 pass through to be welded to connect, and test specimen 1 is clamped in the axial two ends of Water hydraulic static pressure loading pressure head 9.
Based on identical inventive concept, this application provides a kind of rock impact static(al) based on above-mentioned experimental provision
Seepage-stress coupling Brazilian tension destroys mechanics experimental technique, and its concrete operation step is as follows：
Step 1, test specimen is radially clipped between incident bar and transmission bar, and firmly strains incident bar and transmission bar to clamp examination
Part.
Step 2, test specimen axial direction two ends and the Water hydraulic static pressure loading pressure head both ends of the surface being fixed on annulus fixture is in close contact, passes through
The inlet opening of Water hydraulic static pressure loading pressure head side is coupled together by connecting tube with being provided with manometric force (forcing) pump.
Step 3, applies default dead load using axial static pressure charger to test specimen, then utilizes Water hydraulic static pressure loading device
Default hydraulic pressure is applied to test specimen.
Step 4, drives sub warhead to clash into incident bar by high pressure gas holder, radially applies dynamic loading to test specimen.Wherein pass through
Adjust the numerical value with the distance of incident bar one end to change dynamic loading for the sub warhead.
Step 5, is connected with data collecting instrument by foil gauge and fetches rock under collection impact static(al) hydraulic coupling action
Stone Brazilian tension destroys mechanics experimental data.
Step 6, by being analyzed to the data gathering processing, to analyze rock under impact static(al) hydraulic coupling action
Stone Brazilian tension destroys mechanical characteristic and damage -form.
Claims (4)
1. one kind is used for rock impact static(al) Seepage-stress coupling Brazilian tension failure test device, including strut device, this pressure
Lever apparatus includes hyperbar tank, sub warhead, incident bar, foil gauge, data collecting instrument, transmission bar and axial static pressure charger,
It is characterized in that：Described experimental provision includes Water hydraulic static pressure loading device, and this Water hydraulic static pressure loading device includes Water hydraulic static pressure loading pressure head, annulus folder
Tool, connecting tube and force (forcing) pump, described annulus fixture is connected with the base being fixed on strut device by pillar, Water hydraulic static pressure loading
Pressure head is fixed in annulus fixture, and the apopore on Water hydraulic static pressure loading pressure head end face is communicated with the inlet opening on side, Water hydraulic static pressure loading
Inlet opening on pressure head side is connected by connecting tube with force (forcing) pump.
2. rock impact static(al) Seepage-stress coupling Brazilian tension failure test device according to claim 1, its feature
It is：It is provided with pressure gauge on described force (forcing) pump.
3. rock impact static(al) Seepage-stress coupling Brazilian tension failure test device according to claim 1 and 2, it is special
Levy and be：Described pillar is welded on base, and annulus fixture and pillar pass through to be welded to connect.
4. a kind of reality requiring described rock impact static(al) Seepage-stress coupling Brazilian tension failure test device based on right 1
Proved recipe method, its step is as follows：
First test specimen is radially fixed between incident bar and transmission bar, using axial static pressure charger, test specimen radial direction is applied
Plus dead load, then hydraulic pressure is applied to test specimen axial direction two ends, and adjusts hydraulic pressure to predetermined value by being provided with manometric force (forcing) pump,
Then driving sub warhead to clash into incident bar by high pressure gas holder makes test specimen destroy, and last gathered data carries out Treatment Analysis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611173490.0A CN106404519A (en) | 2016-12-19 | 2016-12-19 | Test device for splitting tensile fracture under impact-static-hydraulic coupling effect of rock and test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611173490.0A CN106404519A (en) | 2016-12-19 | 2016-12-19 | Test device for splitting tensile fracture under impact-static-hydraulic coupling effect of rock and test method |
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| Publication Number | Publication Date |
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| CN106404519A true CN106404519A (en) | 2017-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611173490.0A Pending CN106404519A (en) | 2016-12-19 | 2016-12-19 | Test device for splitting tensile fracture under impact-static-hydraulic coupling effect of rock and test method |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106932285A (en) * | 2017-04-10 | 2017-07-07 | 中南大学 | A kind of test device and method of neighbouring water body rock spallation strength |
| CN108106992A (en) * | 2017-12-19 | 2018-06-01 | 中建材中岩科技有限公司 | Test about Bond Strength method under the conditions of the infiltration of coating material pressure |
| CN108444807A (en) * | 2018-01-23 | 2018-08-24 | 兰州大学 | A kind of unsteady flow test method of test Rock And Soil physico mechanical characteristic |
| CN108645708A (en) * | 2018-05-09 | 2018-10-12 | 中国矿业大学 | A kind of water-couple of force for three-dimensional fracture rock sample closes loading device and loading method |
| CN110595918A (en) * | 2019-10-25 | 2019-12-20 | 安徽理工大学 | Dynamic and static coupling loading anchoring body test device |
| CN111929150A (en) * | 2020-08-25 | 2020-11-13 | 中南大学 | Surrounding rock dynamics test system and method for railway tunnel under rainy mountain area |
| CN112014245A (en) * | 2020-08-13 | 2020-12-01 | 中国人民解放军空军工程大学 | Hopkinson pressure bar device for high-water-pressure rock breaking test and using method |
| CN112697578A (en) * | 2019-10-22 | 2021-04-23 | 中车长春轨道客车股份有限公司 | High-speed tensile test anchor clamps |
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| CN1731133A (en) * | 2005-08-18 | 2006-02-08 | 中南大学 | Dynamic and static combined rock loading experiment method and apparatus |
| CN102778387A (en) * | 2012-08-10 | 2012-11-14 | 湖南科技大学 | Testing device and testing method for rock cracked through coupling of dynamic static load and water pressure |
| CN206248439U (en) * | 2016-12-19 | 2017-06-13 | 湖南科技大学 | One kind is used for rock impact-static(al)-Seepage-stress coupling Brazilian tension breaking test device |
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2016
- 2016-12-19 CN CN201611173490.0A patent/CN106404519A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1731133A (en) * | 2005-08-18 | 2006-02-08 | 中南大学 | Dynamic and static combined rock loading experiment method and apparatus |
| CN102778387A (en) * | 2012-08-10 | 2012-11-14 | 湖南科技大学 | Testing device and testing method for rock cracked through coupling of dynamic static load and water pressure |
| CN206248439U (en) * | 2016-12-19 | 2017-06-13 | 湖南科技大学 | One kind is used for rock impact-static(al)-Seepage-stress coupling Brazilian tension breaking test device |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106932285A (en) * | 2017-04-10 | 2017-07-07 | 中南大学 | A kind of test device and method of neighbouring water body rock spallation strength |
| CN106932285B (en) * | 2017-04-10 | 2020-05-29 | 中南大学 | Device and method for testing rock spalling strength of adjacent water body |
| CN108106992A (en) * | 2017-12-19 | 2018-06-01 | 中建材中岩科技有限公司 | Test about Bond Strength method under the conditions of the infiltration of coating material pressure |
| CN108444807A (en) * | 2018-01-23 | 2018-08-24 | 兰州大学 | A kind of unsteady flow test method of test Rock And Soil physico mechanical characteristic |
| CN108645708A (en) * | 2018-05-09 | 2018-10-12 | 中国矿业大学 | A kind of water-couple of force for three-dimensional fracture rock sample closes loading device and loading method |
| CN108645708B (en) * | 2018-05-09 | 2020-06-26 | 中国矿业大学 | Water-force coupling loading device and loading method for three-dimensional fractured rock sample |
| CN112697578A (en) * | 2019-10-22 | 2021-04-23 | 中车长春轨道客车股份有限公司 | High-speed tensile test anchor clamps |
| CN110595918A (en) * | 2019-10-25 | 2019-12-20 | 安徽理工大学 | Dynamic and static coupling loading anchoring body test device |
| CN110595918B (en) * | 2019-10-25 | 2024-03-29 | 安徽理工大学 | Dynamic and static coupling loading anchor body test device |
| CN112014245A (en) * | 2020-08-13 | 2020-12-01 | 中国人民解放军空军工程大学 | Hopkinson pressure bar device for high-water-pressure rock breaking test and using method |
| CN111929150A (en) * | 2020-08-25 | 2020-11-13 | 中南大学 | Surrounding rock dynamics test system and method for railway tunnel under rainy mountain area |
| CN111929150B (en) * | 2020-08-25 | 2021-07-20 | 中南大学 | Surrounding rock dynamics test system and method for railway tunnel under rainy mountain area |
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Application publication date: 20170215 |