CN107957374A - Coal body loading property influences analogue experiment installation and method under a kind of constraints - Google Patents
Coal body loading property influences analogue experiment installation and method under a kind of constraints Download PDFInfo
- Publication number
- CN107957374A CN107957374A CN201711446558.2A CN201711446558A CN107957374A CN 107957374 A CN107957374 A CN 107957374A CN 201711446558 A CN201711446558 A CN 201711446558A CN 107957374 A CN107957374 A CN 107957374A
- Authority
- CN
- China
- Prior art keywords
- coal body
- coal
- baffle
- groove
- cube
- 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
- 239000003245 coal Substances 0.000 title claims abstract description 191
- 238000002474 experimental method Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000009434 installation Methods 0.000 title claims abstract description 13
- 238000007493 shaping process Methods 0.000 claims abstract description 7
- 239000000314 lubricant Substances 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 claims description 8
- 238000004088 simulation Methods 0.000 claims description 8
- 229940099259 vaseline Drugs 0.000 claims description 4
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 238000003780 insertion Methods 0.000 abstract description 2
- 230000037431 insertion Effects 0.000 abstract description 2
- 238000011160 research Methods 0.000 description 11
- 238000012360 testing method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 2
- 240000002853 Nelumbo nucifera Species 0.000 description 2
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000012669 compression test Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000000452 restraining effect Effects 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 230000001050 lubricating effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 230000003245 working effect Effects 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
The invention discloses coal body loading property under a kind of constraints to influence analogue experiment installation and method, belong to coal body experiment of machanics field, apparatus of the present invention include being equipped with four end to end groove rectangular bases, baffle insertion groove type is set up into square groove, pressure head coordinates with this cube of groove carries out compacting cube coal body；Pressure head, baffle, base form the containment surfaces to cube coal body, baffle number adjusts, the scope of freedom of cube coal body can be formed by removing baffle, the coal body containment surfaces and the quantity controllable register quantity on the scope of freedom simulated as needed, then loading experiment is carried out to cube coal body by pressure head, thus completes coal body loading property under the conditions of coal body shaping and analogue constraints, simple and quick low cost, it is repeatable to utilize, easy to study affecting laws of the constraint to coal body.
Description
Technical field
The present invention relates to one kind simulation stand under load coal body characteristic experimental apparatus and method, and in particular to coal under a kind of constraints
Body loading property influences analogue experiment installation and method, belongs to coal body experiment of machanics field.
Background technology
China's underground coal recovery method mainly uses coal wall coal-mining method, i.e., by the coal body across pitch in exploiting field or inclines
To multiple coal walls are divided into, then the coal of each coal wall is adopted respectively according to order planned in advance
Go out.The coal of working face is plucked out of to form goaf, when the coal to approaches the working surface is exploited, it is necessary first to along adopting
Tunnel is dug in dead zone, as shown in Figure 1, staying the method for setting fender in coal body 4 along mined out usually through gob side entry driving at this stage
Area 1, which is stayed, sets small size coal column 2, reduces area because it is arranged in supporting pressure, and fender 2 has separated digging laneway 3 and goaf 1
Contact, avoids leaking out for tunnel from entering tunnel 3 with water in gob area, has and saves coal resources, stope drift active workings safety and stability etc.
Plurality of advantages, has obtained extensive popularization and application.
Stay when setting fender gob side entry driving, the coal body of diverse location can subject different stress states, with research object
Difference, is now divided into three parts, as shown in Figure 1, take regular cuboid coal column 21 to be used as research object, the top of cuboid coal column 21 by
To overburden pressure, bottom is subject to backplanes support, simultaneously because staying 2 side of coal column set close to 1 side of goaf close to lane
Road 3, can form the scope of freedom of the left and right sides, the two scope of freedoms are not subject to the effect of power, front and rear sides under the conditions of non-support
By internal coal body supporting role.Regular cuboid driving face coal body 31 is taken to be used as research object.The atop part is subject to
Overlying strata stressor layer, bottom are subject to backplanes support, before driving face on form the scope of freedom, be not subject to the effect of power, left and right two
Side and rear side are by internal coal body supporting role.It is research object to take regular cuboid entity coal 41, can be formed close to tunnel side
The scope of freedom, under the conditions of non-support, is not subject to the effect of power, top is subject to overburden pressure, and bottom is subject to backplanes support, preceding
Both sides and right side are by internal coal body supporting role afterwards.It can be seen from the above that to the coal body of different parts, its load-carrying properties is due to by lateral spacing
Reason will be very different, study relevant portion constraints under coal body bearer properties influence to coal column, driving face,
Coal wall stability contorting meaning is particularly significant.
Coal petrography stone (body) experiment of machanics be always people recognize rock (body) different force effect under stress state, should
The main means of the mechanical characteristic such as change state and destructive characteristics, it is the basis for solving engineering technology problem.Coal is tried at this stage
The research of sample intensity uses uniaxial compression test, triaxial compression test reflects coal body load-carrying properties indirectly.But uniaxial compression is
Non- confined compression, three kinds of actual occurrence status of this and the coal body of above-mentioned analysis are not inconsistent, it is difficult to are truly reflected in Prescribed Properties
Under coal body loaded state.Three research objects all there is one or two scope of freedom and on tunnel surface, away from enclosing
Rock deep, stress reduce substantially, without the stress of primary rock, only exist the restraining force that limitation coal body loosely deforms.Therefore, three axis pressure
The included false triaxial tests of contracting using cylindric test specimen because only can guarantee that confined pressure is consistent, it is difficult to reflect multiple free surface states and
It is not inconsistent with virtual condition, true triaxial tests the stress of primary rock state because being chiefly used in being formed highland pressure and equipment is expensive, complicated,
The lot of experimental data of the low constraint of fast and low-cost is difficult to realize, the above all lacks the pact of the related reflection true occurrence status of coal body
Coal body loading property progress under the conditions of beam.
Further, since the coal body material of experiment should use cube coal sample, raw coal is easy during such coal sample is processed
Produce damaged, it is difficult to be molded, more to replace raw coal sample using moulded coal is made, which needs a set of coal body former, improves
Experimental cost and the complexity for adding process, shortage can coal body shaping coal body carries spy under the conditions of analogue constraints again
The repeatable experimental provision utilized of property.
In conclusion the coal body bearer properties under research constraints influence to stablize ten to coal column, driving face, coal wall
It is point important, in Study on Coal sample pressurized tests reflection coal body load-carrying properties experimentally, also create there is coal body constraints is difficult,
The controllable scope of freedom is difficult to be formed, it is difficult to which the live coal body physical constraint of reflection and loading conditions, coal body shaping are associated with loading device
Property poor, the more problem such as experimental cost height, there is presently no under constraints coal body loading property influence related experiment
Apparatus and method.
The content of the invention
The object of the present invention is to provide coal body loading property under a kind of constraints to influence analogue experiment installation and method, can
For coal body loading property under the conditions of coal body shaping and analogue constraints, simple and quick low cost, repeats and utilizes, easy to study
Constrain the affecting laws to coal body.
To achieve the above object, coal body loading property influences analogue experiment installation under a kind of constraints that the present invention uses
Including：Base, just baffle, hoop, pressure head；
Base is rectangular base, and four grooves parallel with four side of base difference are provided with the base, four grooves
Join end to end to form rectangular shaped rim successively, the depth of groove is not less than 5mm not less than 10mm, width；
The baffle have four, its thickness and the recess width coordinate, its length coordinates with four grooves respectively,
It is highly equal；
The stirrup is rectangle stirrup, its underpart size is engaged with the rectangular shaped rim outside dimension that the groove is formed, it
Top protrudes inwardly to form lug boss, and the projecting height of the lug boss is not more than the thickness of the baffle；
The pressure head bottom surface is engaged with the rectangular shaped rim inside dimension that the groove is formed, which is equipped with pin
Hole, pressure head are installed on forcing press by the pin hole.
Preferably, the base is square base, and four groove lengths are equal, the rectangular shaped rim of formation is pros
Shape frame, the height of baffle plate are more than the groove length.
Preferably, the baffle outer surface is equipped with handle.
The experimental method of analogue experiment installation is influenced using coal body loading property under a kind of above-mentioned constraints, including it is as follows
Step：
(1) compacting coal body pressure is calculated：According to the buried depth of coal body to be measured, pressure needed for compacting coal body is calculated：P=S × γ
× H, S are the rectangle frame inner area that the groove is formed, and γ is the unit weight of coal body to be measured, and H is the buried depth of coal body to be measured；
(2) prefabricated cube of coal body：Four baffles are inserted into the groove on the base respectively, four baffles surround
Cube groove, stirrup is sleeved on above baffle and is toppled over to prevent baffle plate, lubricant is smeared inside cube groove, then into groove
Add broken coal, and smooth broken coal upper surface；The pressure head is installed on forcing press, adjustment position base makes a cube groove face pressure
Lubricant is smeared in head, pressure head lower surface, and the downward pressure for setting forcing press is P, and then operating pressure machine moves downward pressure head,
Pressure head enters in cube groove, applies pressure P to coal body, and after coal body shaping, lifting pressure head, completes a cube coal body compacting；
(3) regulating device forms the scope of freedom for simulating actual coal body occurrence status and containment surfaces：
1., when the coal body of simulation only has a scope of freedom：Stirrup is removed, a baffle is removed and forms coal body freedom
Face, remaining baffle and pressure head bottom surface form containment surfaces；
2., when the coal body of simulation has two scope of freedoms：Stirrup is removed, two opposite baffles is removed and forms coal body
The scope of freedom, remaining baffle and pressure head bottom surface form containment surfaces；
(4) ballast is tested：Stirrup is sleeved on above baffle, forcing press to pressure head is then adjusted and touches a cube coal body upper table
Face, the then load to forcing press and displacement reset, set forcing press parameter to be monitored, the coal body under constraints is added
Carry characteristic test；Experimental data is recorded, and observes coal deformation feature, surface displacement feature etc..
Preferably, the lubricant is vaseline.
The present invention for coal body it is constrained under the conditions of loading characteristic problem, coal body is molded and is effectively combined with loading device
Get up, the conversion on containment surfaces and the scope of freedom realized by baffle multiple combinations mode, reflect to the full extent coal body it is actual by
Carry and restrained condition, the simulator and method are to the stand under load coal column under research constraints, driving face, coal wall characteristic shadow
Rule is rung to be of great significance.The device is detachable at the same time, and assembling is quick, repeats and utilizes, there is saving experimental cost.
Brief description of the drawings
Fig. 1 is the live coal body schematic diagram under the conditions of physical constraint；
Fig. 2 is the structure diagram that coal body loading property influences analogue experiment installation under a kind of constraints of the present invention；
Fig. 3 is the diagrammatic cross-section under the device experimental state in Fig. 2；
Fig. 4 is the experimental result of the embodiment of the present invention；
In figure：1. goaf, 2. coal columns, 21. cuboid coal columns, 3. tunnels, 31. cuboid driving face coal bodies, 4.
Coal body, 41. cuboid entity coals, 5. bases, 51. grooves, 6. baffles, 7. stirrups, 71. lug bosses, 8. pressure heads, 81. pin holes,
9. cube coal body.
Embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings, using the left and right in Fig. 3 as a cube width side for coal body
To the length direction using the vertical paper direction in Fig. 3 as cube coal body.
As shown in Figure 2 to Figure 3, coal body loading property influence analogue experiment installation includes under a kind of constraints：Base 5,
Baffle 6, just hoop, pressure head 8；Base 5 is rectangular base, and four grooves parallel with 5 four side of base difference are provided with the base 5
51, which joins end to end to form rectangular shaped rim successively, and 51 depth of groove is not less than 10mm, ensures baffle 6 with this
It can be fixed in insertion groove 51,51 width of groove is not less than 5mm, 6 thickness of baffle and 51 width fits of groove, ensures
Baffle 6 has some strength, and when preventing loading, baffle 6 is deformed or destroyed；Baffle 6 has four, its thickness and 51 width of groove match somebody with somebody
Close, its length coordinates with four grooves 51 respectively, it is highly equal；Stirrup 7 is 51 shape of rectangle stirrup, its underpart size and groove
Into rectangular shaped rim outside dimension be engaged, its upper part protrudes inwardly from and to form lug boss 71, the projecting height of the lug boss 71 is little
In the thickness of baffle 6；8 bottom surface of pressure head is engaged with the rectangular shaped rim inside dimension that groove 51 is formed, which is equipped with pin
Hole 81, pressure head 8 are installed on forcing press by the pin hole 81.
Four baffles 6 are inserted into groove 51 respectively, baffle 6 forms cube groove with groove 51, and stirrup 7 is sleeved on baffle
6 tops, the lug boss 71 of stirrup 7, which is stuck in 6 upper end of baffle, fixes 7 position of stirrup, stirrup 7 baffle 6 is formed in restraining force,
Anti- baffle plate 6 pours out in loading process；Pressure head 8 is connected on forcing press by pin hole 81, and pressure head 8 drops to cube
In groove, coordinated by pressure head 8, baffle 6, base 5, pressure head 8 form containment surfaces, can be used for suppressing cube coal body 9, and at the same time by
Independent in each baffle 6,6 quantity of baffle is adjustable, when taking down baffle 6, you can forms the scope of freedom of cube coal body 9.If desired shape
During into a scope of freedom, next baffle 6 is taken；When if desired forming two opposite scope of freedoms, opposite two are removed
Baffle 6；The parameter of forcing press is set, you can coal body stand under load mould under the compacting of completion cube coal body 9 or various boundary conditions
Draft experiment.
Preferably, base 5 is square base, and four 51 equal lengths of groove, the rectangular shaped rim formed are square side
Frame, 6 height of baffle are more than 51 length of groove；It is so designed that, in the experimentation of compacting cube coal body 9, the width of cube coal body 9
Degree and equal length, by adding suitable coal, make pressed cube of 9 height of coal body be equal to the width of cube coal body 9, so
Cube coal body 9 suppressed is square, subsequently in by load simulation experimental, in length direction and width inside cube coal body 9
Stress is more balanced on direction, and experimental result is more accurate.
Preferably, 6 outer surface of baffle is equipped with handle, can more convenient to install or dismounting gear here in experimentation
Plate 6.
The experimental method of analogue experiment installation is influenced using coal body loading property under a kind of above-mentioned constraints, including it is as follows
Step：
(1) compacting coal body pressure is calculated：According to the buried depth of coal body to be measured, pressure needed for compacting coal body is calculated：P=S × γ
× H, S are the rectangle frame inner area that groove 51 is formed, and γ is the unit weight of coal body to be measured, and H is the buried depth of coal body to be measured；
The coal body pressure that above-mentioned formula calculates is approximately equal to the actual pressure of coal body that scene is simulated, therefore,
9 mechanical property of cube coal body at compacting is more nearly on-site actual situations.
(2) prefabricated cube of coal body 9：Four baffles 6 are distinguished in the groove 51 on inserted base 5, four baffles 6 surround vertical
Square groove, is sleeved on the top of baffle 6 by stirrup 7 and topples over to prevent baffle plate 6, lubricant is smeared inside cube groove, then to cube
Broken coal, and smooth broken coal upper surface are added in groove；Pressure head 8 is installed on forcing press, 5 position of adjustment base makes a cube groove face
Lubricant is smeared in pressure head 8,8 lower surface of pressure head, and the downward pressure for setting forcing press is P, and then operating pressure machine makes pressure head 8 downward
Movement, pressure head 8 enter in cube groove, apply pressure P to coal body, and after coal body shaping, lifting pressure head 8, completes cube coal body 9 and press
System；
Inside smear lubricant, can effectively prevent in 9 pressing process of cube coal body, broken coal be sticked to baffle 6, base 5 or
On pressure head 8, during lifting pressure head 8 or dismounting baffle 6, it is possible to reduce the destruction to cube coal body 9.
(3) regulating device forms the scope of freedom for simulating actual coal body occurrence status and containment surfaces：
1., when the coal body of simulation only has a scope of freedom：Stirrup 7 is removed, a baffle 6 is removed and forms coal body freedom
Face, remaining baffle 6 and 8 bottom surface of pressure head form containment surfaces；It is such as real with the cuboid driving face coal body 31 in Fig. 1 or cuboid
Body coal 41 is used as research object, and the position that this two parts coal body only closes on tunnel is the scope of freedom, its lap is containment surfaces, i.e.,
It can remove a baffle 6；
2., when the coal body of simulation has two scope of freedoms：Stirrup 7 is removed, two opposite baffles 6 is removed and forms coal
The body scope of freedom, remaining baffle 6 and 8 bottom surface of pressure head form containment surfaces；It is research object such as with cuboid coal column 21 in Fig. 1, this portion
It is the scope of freedom to divide coal body to close on tunnel and the position in goaf, that is, has two opposite scope of freedoms, its lap is containment surfaces, then goes
Except two opposite baffles 6；
(4) ballast is tested：Stirrup 7 is sleeved on the top of baffle 6, forcing press to pressure head 8 is then adjusted and touches cube coal body 9
Upper surface, the then load to forcing press and displacement are reset, and set forcing press parameter to be monitored, to the coal body under constraints into
Row loading characteristic is tested；Experimental data is recorded, and observes coal deformation feature, surface displacement feature etc..
Preferably, lubricant is vaseline, and high lubricating effect, cost are relatively low.
The present invention for coal body it is constrained under the conditions of loading characteristic problem, coal body is molded and is effectively combined with loading device
Get up, the conversion on containment surfaces and the scope of freedom realized by 6 multiple combinations mode of baffle, reflect to the full extent coal body it is actual by
Carry and restrained condition, the simulator and method are to the stand under load coal column under research constraints, driving face, coal wall characteristic shadow
Rule is rung to be of great significance.The device is detachable at the same time, and assembling is quick, repeats and utilizes, there is saving experimental cost.
It is one embodiment of the present of invention below：
(1) experimental provision size：Each groove length is 0.1m, and the area surrounded is 0.01m2；
(2) compacting coal body pressure is calculated：Coal deep at certain ore deposit 600m is taken, its institute is calculated according to formula P=S × γ × H
Pressure is needed, wherein S is the square-shaped frame inner area 0.01m that groove is formed2, γ is the unit weight 25kN/m of coal body to be measured3, H is to be measured
The buried depth 600m of coal body, then P=150kN；
(3) prefabricated cube of coal body and ballast experiment：Baffle and stirrup are installed, vaseline is smeared in cube groove, broken coal is fallen
Enter in cube groove, use pressure to carry out compacting 20min for the pressure of 120kN, it is 0.1m to make pressed height, then removes one
A baffle, forms a scope of freedom, carries out ballast experiment, gathered data；The step of repeating above-mentioned compacting cube coal body, then goes
Except two baffles, two scope of freedoms are formed, carry out ballast experiment, gathered data；The step of repeating above-mentioned compacting cube coal body, so
After remove all baffles, form four scope of freedoms, as a comparison group, carry out ballast experiment, gathered data；Carry out ballast experiment
When, pressure head is displaced downwardly to and touches a cube coal body upper surface, then forcing press load and displacement are reset, it is real then to carry out ballast
Test, it is tested, and the results are shown in Figure 4.
Fig. 4 abscissas move down displacement for pressure head, and ordinate applies coal body load for forcing press, i.e. coal body institute is loaded；
As can be seen from Figure 4 coal body loading property is different under various boundary conditions, and when an only scope of freedom, it bears maximum load
Lotus is 38N；When only two scope of freedoms, it is 26N that it, which bears maximum load,；When there is four scope of freedoms, it bears maximum load
Lotus is 21N.The non-deformability of cube coal body also differs under various boundary conditions, and when an only scope of freedom, it is high
When degree shortens 10mm, reach maximum and bear load, then destroy；When only two scope of freedoms, when its height shortens 9mm, reach
Load is born to maximum, is then destroyed；When there are four scope of freedoms, when its height shortens 5mm, reach maximum and bear load, with
After destroy.It can be seen from the above that the scope of freedom is fewer, it can bear, and load is bigger, and compression strength is bigger.
Through this embodiment, demonstrate apparatus of the present invention and method can effectively study stand under load coal under constraints
Column, driving face, coal wall characteristic affecting laws.
Claims (5)
1. coal body loading property influences analogue experiment installation under a kind of constraints, including：Base (5), just baffle (6), hoop, pressure
Head (8)；It is characterized in that：
Base (5) is rectangular base, and four grooves (51) parallel with (5) four side difference of base are provided with the base (5), should
Four grooves (51) join end to end to form rectangular shaped rim successively, and groove (51) depth is not less than not less than 10mm, width
5mm；
The baffle (6) have four, its thickness and the groove (51) width fits, its length respectively with four grooves
(51) coordinate, it is highly equal；
The stirrup (7) is rectangle stirrup, its underpart size is engaged with the rectangular shaped rim outside dimension that the groove (51) is formed,
Its upper part protrudes inwardly to form lug boss (71), and the projecting height of the lug boss (71) is not more than the thickness of the baffle (6)；
Pressure head (8) bottom surface is engaged with the rectangular shaped rim inside dimension that the groove (51) is formed, which is equipped with
Pin hole (81), pressure head (8) are installed on forcing press by the pin hole (81).
2. coal body loading property influences analogue experiment installation under a kind of constraints according to claim 1, its feature exists
In：The base (5) is square base, and four groove (51) equal lengths, the rectangular shaped rim formed are square side
Frame, the baffle (6) are highly more than the groove (51) length.
3. coal body loading property influences analogue experiment installation, its feature under a kind of constraints according to claim 1 or 2
It is：Baffle (6) outer surface is equipped with handle.
4. coal body loading property influences analogue experiment method under a kind of constraints, it is characterised in that：Include the following steps：
(1) compacting coal body pressure is calculated：According to the buried depth of coal body to be measured, pressure needed for compacting coal body is calculated：P=S × γ × H, S
The rectangle frame inner area formed for the groove (51), γ are the unit weight of coal body to be measured, and H is the buried depth of coal body to be measured；
(2) prefabricated cube of coal body (9)：Four baffles (6) are inserted into the groove (51) on the base (5) Nei respectively, four
A baffle (6) surrounds a cube groove, and stirrup (7) is sleeved on above baffle (6) and is toppled over to prevent baffle plate (6), inside cube groove
Lubricant is smeared, broken coal, and smooth broken coal upper surface are then added into cube groove；The pressure head (8) is installed on forcing press
On, adjustment base (5) position makes a cube groove face pressure head (8), and lubricant is smeared in pressure head (8) lower surface, set forcing press to
Lower pressure is P, and then operating pressure machine moves downward pressure head (8), and pressure head (8) enters in cube groove, applies pressure to coal body
P, after coal body shaping, lifting pressure head (8), completes cube coal body (9) compacting；
(3) regulating device forms the scope of freedom for simulating actual coal body occurrence status and containment surfaces：
1., when the coal body of simulation only has a scope of freedom：Stirrup (7) is removed, a baffle (6) is removed and forms coal body freedom
Face, remaining baffle (6) and pressure head (8) bottom surface form containment surfaces；
2., when the coal body of simulation has two scope of freedoms：Stirrup (7) is removed, two opposite baffles (6) is removed and forms coal
The body scope of freedom, remaining baffle (6) and pressure head (8) bottom surface form containment surfaces；
(4) ballast is tested：Stirrup (7) is sleeved on above baffle (6), forcing press to pressure head (8) is then adjusted and touches a cube coal
Body (9) upper surface, the then load to forcing press and displacement are reset, and forcing press parameter to be monitored are set, under constraints
Coal body carries out loading characteristic experiment；Experimental data is recorded, and observes coal deformation feature, surface displacement feature etc..
5. coal body loading property influences analogue experiment method under a kind of constraints according to claim 4, its feature exists
In：The lubricant is vaseline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711446558.2A CN107957374A (en) | 2017-12-27 | 2017-12-27 | Coal body loading property influences analogue experiment installation and method under a kind of constraints |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711446558.2A CN107957374A (en) | 2017-12-27 | 2017-12-27 | Coal body loading property influences analogue experiment installation and method under a kind of constraints |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107957374A true CN107957374A (en) | 2018-04-24 |
Family
ID=61955679
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711446558.2A Pending CN107957374A (en) | 2017-12-27 | 2017-12-27 | Coal body loading property influences analogue experiment installation and method under a kind of constraints |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107957374A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111398037A (en) * | 2020-04-28 | 2020-07-10 | 河南理工大学 | Testing device for testing strength of single free surface of rock and using method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103712852A (en) * | 2013-12-30 | 2014-04-09 | 中国矿业大学 | Rock lateral confinement compression resistance experiment sample clamp and experiment method |
| CN106959244A (en) * | 2017-05-24 | 2017-07-18 | 湖南科技大学 | A kind of lateral pressure test device and method for coal petrography sample |
| CN107036953A (en) * | 2017-03-31 | 2017-08-11 | 太原理工大学 | The experimental rig and test method of gas-liquid two-phase seepage flow in a kind of simulation coal body |
| CN107064450A (en) * | 2017-03-14 | 2017-08-18 | 中国矿业大学 | The experimental method of the solid thermalization multi- scenarios method of coal body stream under a kind of simulation Thermal-mechanical Coupling |
| CN207894731U (en) * | 2017-12-27 | 2018-09-21 | 中国矿业大学 | Coal body loading property influences analogue experiment installation under constraints |
-
2017
- 2017-12-27 CN CN201711446558.2A patent/CN107957374A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103712852A (en) * | 2013-12-30 | 2014-04-09 | 中国矿业大学 | Rock lateral confinement compression resistance experiment sample clamp and experiment method |
| CN107064450A (en) * | 2017-03-14 | 2017-08-18 | 中国矿业大学 | The experimental method of the solid thermalization multi- scenarios method of coal body stream under a kind of simulation Thermal-mechanical Coupling |
| CN107036953A (en) * | 2017-03-31 | 2017-08-11 | 太原理工大学 | The experimental rig and test method of gas-liquid two-phase seepage flow in a kind of simulation coal body |
| CN106959244A (en) * | 2017-05-24 | 2017-07-18 | 湖南科技大学 | A kind of lateral pressure test device and method for coal petrography sample |
| CN207894731U (en) * | 2017-12-27 | 2018-09-21 | 中国矿业大学 | Coal body loading property influences analogue experiment installation under constraints |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111398037A (en) * | 2020-04-28 | 2020-07-10 | 河南理工大学 | Testing device for testing strength of single free surface of rock and using method |
| CN111398037B (en) * | 2020-04-28 | 2023-03-14 | 河南理工大学 | Testing device for testing strength of single free surface of rock and using method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108226447B (en) | Three-dimensional simulation test device and test method for underground coal mining surface movement | |
| CN104807974B (en) | A kind of analog material seam mining simulator stand and test method | |
| CN103837360B (en) | Tunnel pipe shed construction method simulated excavation device and implementation method thereof | |
| CN103983742B (en) | Coal seam overlying strata are disrumpent feelings coal and rock gas migration and extraction experimental system | |
| CN102182509A (en) | Cut-and-fill three-dimensional simulation test device and method | |
| CN111188622B (en) | Platform, system and method for simulating collapse of underground engineering surrounding rock dangerous stone | |
| CN105043852B (en) | A kind of function loading device tested suitable for mine laneway analog simulation | |
| CN210347640U (en) | True triaxial three-dimensional analog simulation experiment device | |
| CN204556619U (en) | Three-dimensional multi-functional analog material seam mining simulator stand | |
| CN103018105B (en) | Simulation experiment platform of compacting system of solid-filling coal mining solid material | |
| CN112763694B (en) | Two-dimensional similarity simulation test device and method for dynamic disturbance of mine exploitation | |
| CN103915030A (en) | Underground engineering tunneling model test device with expanding and contracting function | |
| CN107907286A (en) | A kind of new unsymmetrial loading tunnel Research on Shaking Table for Simulating system | |
| CN109507393B (en) | Indoor overlying strata separation layer quantity measurement and grouting control simulation system and method thereof | |
| Liu | Experimental and numerical study of rock stratum movement characteristics in longwall mining | |
| CN107727424A (en) | The geomechanics model experimental provision and method of a kind of rock slope with along layer near cut stability | |
| CN110632275A (en) | Underground engineering disturbance similar model test bed and test method | |
| CN113049780A (en) | Testing device and testing method for gangue fluidized filling material | |
| CN106525538A (en) | Material compacting device for similar material simulation test and using method | |
| CN104614244B (en) | High-stress roadway stability similarity simulation test device and method | |
| CN207894731U (en) | Coal body loading property influences analogue experiment installation under constraints | |
| CN101982753B (en) | Testing device for coal gangue three-dimensional compression physical test | |
| CN107957374A (en) | Coal body loading property influences analogue experiment installation and method under a kind of constraints | |
| CN105403684A (en) | Multi-scale analog simulation test platform for simulating collapse of coal covering rock | |
| CN112345372A (en) | Visual test system and method for deformation and damage of roadway floor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |