CN109406284A - A kind of unequal stress loading device for mechanical test - Google Patents
A kind of unequal stress loading device for mechanical test Download PDFInfo
- Publication number
- CN109406284A CN109406284A CN201910023510.3A CN201910023510A CN109406284A CN 109406284 A CN109406284 A CN 109406284A CN 201910023510 A CN201910023510 A CN 201910023510A CN 109406284 A CN109406284 A CN 109406284A
- Authority
- CN
- China
- Prior art keywords
- expansion slot
- swelling agent
- front side
- back side
- side panel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000008961 swelling Effects 0.000 claims abstract description 14
- 238000004088 simulation Methods 0.000 claims description 9
- 239000003245 coal Substances 0.000 abstract description 16
- 239000003795 chemical substances by application Substances 0.000 abstract description 12
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 abstract description 9
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- 239000011280 coal tar Substances 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
Landscapes
- 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
A kind of unequal stress loading device for mechanical test, the mechanical test suitable for loaded coal body.The device is composed of 6 parts such as cover board, flapper, front side board, back side panel, expansion slot, pedestal.Wherein, front side board and back side panel are placed on expansion slot two sides, are attached fixation by customizing screw rod；Flapper is placed in above the short frid of expansion slot outermost, is fixed by the fastening force of cover board, front side board, back side panel and screw rod.It is characterized by: expansion slot is divided into five for loading the slot of swelling agent, the degree of irregularity that the swelling agent by placing various dose in different slots loads come proof stress.
Description
Technical field
The invention patent is a kind of unequal stress loading device, suitable for coal, rock mass under non-homogeneous stress state
Deformation failure simulation test.
Background technique
Currently, pressurization tunnelling simulator mostly use jack pair rigid plate pressurize mode, due to rigid plate by
The inhomogeneities of load causes to be pressurized greatly by jack direct pressure, and plate edge pressure is small, and load is difficult to control, and pressurizes
Mode only can be controlled to uniform pressurization, not comprehensive to the simulation of underground coal rock mass stress state, and furthermore the structure is complex, easily
It breaks down, the non-homogeneous stress state of coal, rock mass before tunneling for more preferable simulation underworkings studies tunnelling process
Middle stress Evolution needs a kind of unequal stress loading device that is simple and easy, being able to maintain constant pressure.
Summary of the invention
For deficiency existing for existing stress loading analog machine, the present invention devises a kind of for the non-equal of mechanical test
Even stress loading experimental provision pressurizes to coal petrography sample in cabinet using swelling agent, adds different doses using more expansion slots
The swelling agent of amount forms uneven load effect.The device is easy to operate, convenient disassembly, be able to maintain fix for a long time it is non-homogeneous
Stress effect.
The invention patent is by cover board (1), flapper (2), front side board (3), back side panel (4), expansion slot (5), pedestal (6)
It is formed Deng 6 component combinations.Wherein, multiple pressure sensors are installed to be used to measure at the sensor mounting hole of front apron (3)
The stress distribution of coal and rock, front side board (3) and back side panel (4) are placed on expansion slot two sides, are attached admittedly by customizing screw rod
It is fixed.Flapper (2) is placed in above the short frid of expansion slot outermost, passes through cover board (1), front side board (3), back side panel (4) and spiral shell
The fastening force of bar is fixed.The device specifically uses that steps are as follows:
I, deployed swelling agent is poured into expansion slot, by control swelling agent in each slot number difference is provided
The stress of size.
II, fine coal coal sample and coal tar are poured into cabinet, and the cover board (1) being placed at the top of device will be installed after compacting.
III, it is fixed by the bottom plate of customization screw rod and expansion slot, after cabinet is completed, is fixed by screw rod and pedestal.
IV, after swelling agent sufficiently reacts, the coal body model under unequal stress loading environment can be obtained, lay down active catch
Plate (2) can realize the mechanical simulation tests such as tunnelling simulation.
The present apparatus can also be used in the load of unequal stress in other Solid Mechanics simulation tests.
Detailed description of the invention
Fig. 1 is device combined effect schematic diagram
Fig. 2 is cover board stereoscopic schematic diagram
Fig. 3 is front side board stereoscopic schematic diagram
Fig. 4 is in expansion slot stereoscopic schematic diagram figure:
1-cover board, 2-flappers, 3-front side boards, 4-back side panels, 5-expansion slots, 6-pedestals.
Specific embodiment
Below in conjunction with attached drawing, lower coal roadway tunneling simulated experiment example is loaded to the present invention with a coal body unequal stress
It is further described:
The present invention is by cover board (1), flapper (2), front side board (3), back side panel (4), expansion slot (5), pedestal (6) etc. 6
A component combination forms.Wherein the cover board (1) of experimental box body uses length to be made of 310mm width of the steel plate of 204mm, in steel
Arrange that a radius is the sensor placement that 3mm is used to draw pressure sensor conducting wire and fixed sensor every 60mm among plate
Hole (totally 5) is respectively arranged M16 screw hole (totally 8) that spacing is 90mm far from the position of edge 18mm in two sides to install spiral shell
Bar fixes cover board；A length of 160mm of flapper (2), width 130mm can unscrew fixed work before drilling experiment starts
The nut and screw rod of dynamic baffle expose coal seam and carry out associated analog experiment；Front side board (3) uses the length to be for 362mm width
The steel plate of 260mm is made, and arranges that 5 radiuses are the sensor of 3mm at interval of 60mm in the position apart from steel plate top edge 80mm
Placement hole, in the left and right sides, location arrangements 8 far from edge 18mm are used for the screw hole of fixed side panel；Back side panel (4) and front side board
(3) shape is consistent, but the sensor placement hole without being used to install sensor；Expansion slot (5) is having a size of 310mm
The hole slot of 6 130mm long 10mm wide is opened among the steel plate of × 204mm, be then inserted into respectively in slot again 5 pieces of 130mm × 110mm,
The steel plate of one piece of 270mm × 130mm, it is the slot that 100mm is used to load swelling agent that 5 depth are formd after welding, by each
The swelling agent of different depth is perfused in a slot to realize the load of non-homogeneous stress.Pedestal (6) is using 380mm × 278mm
It bores 4 screw holes for fixing in iron plate to be processed into, 1-5 component can be fixed on pedestal by screw rod after assembling
(6) on.
After unequal stress loading simulation experimental provision of the present invention is completed, deployed swelling agent is set according to experiment
In meter injection expansion slot (5), the amount that swelling agent is injected in 5 expansion slots is different, and is generated after being reacted using swelling agent different
Volume expansion carry out the pressure different to top coal body, realize the application of coal seam non-homogeneous stress.
This digging laneway similarity simulation experiment body structure is simple, can be realized the load to coal body difference stress, can be with
Simulated experiment for digging laneway compression drilling in coal state.
Claims (1)
1. a kind of unequal stress loading simulation experimental provision, by cover board, flapper, front side board, back side panel, expansion slot, bottom
6 component combinations such as seat form, and can be attached fixation by screw rod between each component, form an experiment casing.It is special
Sign is: expansion slot includes five for loading the slots of swelling agent, by placed in different slots the swelling agent of various dose come
Control the load of different degrees of non-homogeneous stress.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910023510.3A CN109406284A (en) | 2019-01-10 | 2019-01-10 | A kind of unequal stress loading device for mechanical test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910023510.3A CN109406284A (en) | 2019-01-10 | 2019-01-10 | A kind of unequal stress loading device for mechanical test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109406284A true CN109406284A (en) | 2019-03-01 |
Family
ID=65462014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910023510.3A Pending CN109406284A (en) | 2019-01-10 | 2019-01-10 | A kind of unequal stress loading device for mechanical test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109406284A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113188913A (en) * | 2021-04-26 | 2021-07-30 | 三峡大学 | Device for obtaining error of hydrofracturing geodesic stress and testing method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344485A (en) * | 2013-06-28 | 2013-10-09 | 东北大学 | Axial loading system and loading method |
| CN203981499U (en) * | 2014-05-16 | 2014-12-03 | 山东科技大学 | The non-uniform charger of a kind of large scale coal body |
| CN108051294A (en) * | 2017-11-06 | 2018-05-18 | 三峡大学 | A kind of device and method for simulating rock anchorage under high-ground stress and groundwater condition |
| CN108645714A (en) * | 2018-06-19 | 2018-10-12 | 山东科技大学 | Analog material bottom distension simulation experiment system and test method |
| CN109030340A (en) * | 2018-07-16 | 2018-12-18 | 三峡大学 | A kind of self-expanding Load-unload device and method |
-
2019
- 2019-01-10 CN CN201910023510.3A patent/CN109406284A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103344485A (en) * | 2013-06-28 | 2013-10-09 | 东北大学 | Axial loading system and loading method |
| CN203981499U (en) * | 2014-05-16 | 2014-12-03 | 山东科技大学 | The non-uniform charger of a kind of large scale coal body |
| CN108051294A (en) * | 2017-11-06 | 2018-05-18 | 三峡大学 | A kind of device and method for simulating rock anchorage under high-ground stress and groundwater condition |
| CN108645714A (en) * | 2018-06-19 | 2018-10-12 | 山东科技大学 | Analog material bottom distension simulation experiment system and test method |
| CN109030340A (en) * | 2018-07-16 | 2018-12-18 | 三峡大学 | A kind of self-expanding Load-unload device and method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113188913A (en) * | 2021-04-26 | 2021-07-30 | 三峡大学 | Device for obtaining error of hydrofracturing geodesic stress and testing method |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190301 |
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| WD01 | Invention patent application deemed withdrawn after publication |