CN109141518A - A kind of big stage afterwards filling body unstable failure test device of unilateral exposure and method - Google Patents
A kind of big stage afterwards filling body unstable failure test device of unilateral exposure and method Download PDFInfo
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- CN109141518A CN109141518A CN201810748787.8A CN201810748787A CN109141518A CN 109141518 A CN109141518 A CN 109141518A CN 201810748787 A CN201810748787 A CN 201810748787A CN 109141518 A CN109141518 A CN 109141518A
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- obturation
- filling body
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Abstract
The present invention relates to a kind of big stage afterwards filling body unstable failure test devices of unilateral side exposure and method, the device to be made of test specimen control system, stress loading system and displacement data acquisition system.Apparatus main body is made of pedestal, axial reaction component, screw rod, screw thread, in the top of obturation sample, the left side, the right side, side plate is put in four sides below, loading system, displacement sensor and pressure sensor are connected outside side plate, it is made to organize integral and connects counterforce device.Pressure is generated at the top of obturation sample and side by loading system, is obtained using pressure sensor and displacement sensor and records corresponding pressure and displacement data.It is an advantage of the invention that stability of the unilateral big stage afterwards filling body of exposure under a variety of stress and different size conditions can be tested, the filling hydrodynamic properties under corresponding environment are measured by sensor, probe into obturation failure mechanism, with easy to operate, high degree of automation, safe, continuous, accurate, efficient advantage.
Description
Technical field
The present invention relates to a kind of big stage afterwards filling body unstable failure test device of unilateral side exposure and methods
Background technique
As resource exploitation and environmental protection contradiction are increasingly prominent, mine filling is as reduction mining activity to earth's surface
Environment damages and ensures a kind of effective means of Stope safty, will can be by more and more extensive utilization.With the mankind couple
The increasing of mineral resources increasingly demand, deep mining increasingly becomes mainstream, and the stability of obturation is that control stope loses
Steady and surface subsidence principal element.In the big stage afterwards filling mining process in deep, carried out after mineral building exploitation cementing
Mineral building obturation is exposed as pillar as unilateral side and carries out stooping pillaring by filling, and roof pressure is supported from original ore pillar to surrounding
Obturation transfer, as support mineral building unilateral side exposure obturation maintain roof pressure play the role of it is critical, such as
What ensures the coke that the unilateral big stage afterwards filling body of exposure keeps stability to have become current research during stooping pillaring
Point.In practice, mine filling body top is by roof Stress, laterally by the frictional force for being in contact with it rock, when therewith for engineering
When neighbouring ore pillar is exploited, then there is stress and concentrate now obturation in an exposed scope of freedom, roof Stress redistribution
As in addition, the height of afterwards stope of big stage can reach 100 meters, and the obturation of unilateral side exposure is easy to appear damage unstability across collapsing
Therefore accident it is extremely necessary to study damage feature and unstability whole process feature of the obturation under unilateral exposure.Based on above-mentioned
Situation, there is an urgent need to one kind can simulate live obturation environmental effect, and can obtain obturation under unilateral exposure
The test device and method of unstable failure mechanical characteristic carry out mechanical characteristic and instability Mechanism progress to obturation test specimen to reach
Experimental study, the purpose of prophylactic filling body unstability accident.
Summary of the invention
The purpose that the present invention is implemented is to propose a kind of unilateral big stage afterwards filling body unstable failure test device of exposure
And method, it can make full use of test specimen control system, the stress loading system, data collection system of described device, simulation is unilateral
The big stage afterwards filling body environmental effect of exposure simultaneously can obtain unstable failure mechanical characteristic of the obturation under unilateral exposure,
Accurately, experimental study quickly and easily is carried out to obturation test specimen stress characteristic, to reach the mesh of prophylactic filling body unstability accident
's.To achieve the goals above, the present invention adopts the following technical scheme: a kind of unilateral big stage afterwards filling body unstability of exposure is broken
Bad test device and method, comprising:
Test specimen control system, 8 and of side plate of four top, the left side, the right side, back sides including obturation sample 12
Be fixed on axial reaction component 1, the axially self loading system 3 on lateral reaction steelframe 10, lateral auto-loading system 7 and by
The experimental provision main body that pedestal 11, axial reaction component 1, screw rod 9, screw thread 13 form.
Stress loading system, including axially self loading system 3, lateral auto-loading system 7 and bearing bottom plate 5.
Data collection system, intelligence axial pressure sensor 2, intelligent side pressure sensor including acquisition pressure signal
6 and acquisition displacement signal intelligent displacement sensor 4.
Preferably, a kind of big stage afterwards filling body unstable failure test device of unilateral exposure and method, it is characterised in that:
Force environment of the mine filling body under unilateral exposure is simulated, and test specimen control system and stress loading system can be passed through
Accurately, different ambient stress retrofilling hydrodynamic properties conveniently, efficiently, are quickly measured, field measurement is not necessarily to, simulates indoors
Test, have it is easy to operate, do not influence to produce, high degree of automation, safe, accurate, efficient advantage.
Preferably, cement tailings ratio, the pulp density, curing age one of the obturation sample 12 and mine filling body
It causes, the ratio of width to height for the obturation sample that can be tested is respectively 1:1,1:2 and 1:3.
Preferably, the pedestal 11, axial reaction component 1 and lateral reaction steelframe 10 are rigid metal stainless steel
Matter, compression strength are greater than 100MPa, and pedestal 11 and axial 1 corresponding position of reaction component are opened and 10 thickness phase of lateral reaction steelframe
Together, with a thickness of 20-30mm, the concave groove of 8mm is set, to fix lateral reaction steelframe 10 inside pedestal 11.
Preferably, the axially self loading system 3 and lateral auto-loading system 7 belong to rigid material, by oil pressure
It is flexible to control it, load deflection range is 40-60mm, and loading speed range is 0.01-1m/s.
Preferably, the intelligent axial force transducer 2 and intelligent side force snesor 6 are anti-corrosion stainless steel material, can
It repeats to try out, range is 50g to 50t, precision 0.01%.
Preferably, the intelligent displacement sensor 4 is laser displacement sensor, can automatically save displacement data in due course,
Minimum precision is 0.01mm, and the service life is up to 2,000,000 times or more.
Preferably, the side plate 8 be through special rigidity stainless steel sheet, 12 side of obturation sample rigidity not
Become rusty steel plate, and outside is relatively smooth, and inside adds abrasive material, to simulate the frictional force of mine filling body and peripheral rock, increases and surveys
The accuracy of examination.
Preferably, the screw rod 9 is the threaded rigid iron of special processing, cooperation hexagonal screw thread 13 it is fixed up and down every
From plate, height adjustment can be carried out to axial reaction component 1, to test the obturation test specimen of different aspect ratios, it is different to reach simulation
The stability of size stope filling body.
The invention proposes a kind of big stage afterwards filling body unstable failure test device of unilateral exposure and method, in application
State system comprising following work step:
A, axial reaction component 1 and pedestal 11 are assembled into bracket loading test platform by lateral reaction steelframe 10, are matched with screw rod 9
Hexagonal screw thread 13 is closed to be fixed.
B, test obturation sample 12 used is placed on the bearing bottom plate 5 in experimental rig, is placed in its each face
Corresponding side plate 8, using axially self loading system 3 and lateral auto-loading system 7 by side plate 8 to filling
Body style 12 is pressurizeed, and when sample side reaches the displacement constraint of practical mine, top is stopped after reaching the roof pressure of practical mine
Only pressurize.
C, the axial direction that obturation test specimen 12 receives is recorded using intelligent axial force transducer 2 and intelligent side force snesor 6
Pressure and lateral pressure record the axial displacement that obturation test specimen 12 generates during loading using intelligent displacement sensor 4
And lateral displacement.
Compared with the device of existing simulation mine filling body boundary condition, the present invention has the advantage that
A kind of big stage afterwards filling body unstable failure test device of unilateral side exposure and method that the present invention addresses, test specimen
Control system, stress loading system, the mutual close fit between data collection system, simulation mine filling body is in unilateral side exposure
In the case of force environment, and can it is accurate by test specimen control system and stress loading system, quickly and easily measure correspondence
Environment retrofilling mechanics characteristic, is not necessarily to field measurement, simulation test indoors, has easy to operate, does not influence to produce,
High degree of automation, safe and efficient advantage.Cement tailings ratio, the slurry of the obturation sample 12 used and mine filling body are dense
Degree, curing age are consistent, but also the ratio of width to height of obturation specimen size can be set respectively for 1:1,1:2 and 1:3, respectively
The frictional force of a side side plate 8 is consistent with the practical frictional force of mine, top pressure also coincide the practical roof pressure of mine, as far as possible
Reach the reliable accurate of simulation, the system principle is simple, operates more convenient.
Detailed description of the invention
Fig. 1 is the Y-Z of apparatus of the present invention to sectional view
Fig. 2 is the Z-X of apparatus of the present invention to sectional view
In figure: 1- axial direction reaction component, the axial pressure sensor of 2- intelligence, 3- axially self loading system, 4- intelligence position
Displacement sensor, 5- bearing bottom plate, 6- intelligent side pressure sensor, the side 7- is to auto-loading system, 8- side plate, 9- screw rod,
10- lateral reaction steelframe, 11- pedestal, 12- obturation sample, 13- screw thread.
Claims (9)
1. a kind of unilateral side exposes big stage afterwards filling body unstable failure test device and method, which is controlled by test specimen is
System, stress loading system, data collection system composition.Experimental provision control system main body by pedestal 11, axial reaction component 1,
Screw rod 9 and screw thread 13 form, and in the top of obturation sample 12, the left side, the right side, side plate 8 is put in four sides below, left
Face, the right side and subsequent side plate 8 connect lateral auto-loading system 7, intelligent displacement sensor 4 and intelligent side pressure
Sensor 6 makes it organize integral and is adjacent to lateral reaction steelframe 10.8 connecting shaft of side plate of 12 top of obturation style is automatic
To loading system 3, intelligent displacement sensor 4 and intelligent axial force transducer 2, so that it is organized integral and be close to axial counter-force structure
Part 1.Pressure is generated to 12 top of obturation sample and side by axially self loading system 3 and lateral auto-loading system 7,
It is obtained by the axial pressure sensor 2 of intelligence and intelligent side pressure sensor 6 and records corresponding pressure data, pass through top
And the intelligent displacement sensor 4 of side records corresponding displacement data.
2. a kind of unilateral side according to claim 1 exposes big stage afterwards filling body unstable failure test device and method,
It is characterized by: the obturation sample 12 is consistent with the cement tailings ratio of mine filling body, pulp density, curing age, it can
The ratio of width to height with the obturation sample of test is respectively 1:1,1:2 and 1:3.
3. a kind of unilateral side according to claim 1 exposes big stage afterwards filling body unstable failure test device and method,
It is characterized by: the pedestal 11, axial reaction component 1 and lateral reaction steelframe 10 are rigid metal stainless steel material,
Pedestal 11 and axial 1 corresponding position of reaction component open it is identical as 10 thickness of lateral reaction steelframe, with a thickness of 20-30mm, pedestal 11
The concave groove of inside setting 8mm, to fix lateral reaction steelframe 10.
4. a kind of unilateral side according to claim 1 exposes big stage afterwards filling body unstable failure test device and method,
It is characterized by: the axially self loading system 3 and lateral auto-loading system 7 can pass through control speed and two kinds of pressure
Method controls 12 top of obturation sample and lateral pressure, and by oil pressure cntrol, it stretches, and load deflection range is 40-
60mm, loading speed range are 0.01-1m/s.
5. a kind of unilateral side according to claim 1 exposes big stage afterwards filling body unstable failure test device and method,
It is characterized by: the intelligent axial force transducer 2 and intelligent side force snesor 6 are anti-corrosion stainless steel material, repeat
On probation, range is 50g to 50t, precision 0.01%.
6. a kind of unilateral side according to claim 1 exposes big stage afterwards filling body unstable failure test device and method,
It is characterized by: the intelligent displacement sensor 4 is laser displacement sensor, displacement data can be automatically saved in due course, it is minimum
Precision is 0.01mm, and the service life is up to 2,000,000 times or more.
7. a kind of unilateral side according to claim 1 exposes big stage afterwards filling body unstable failure test device and method,
It is characterized by: the side plate 8 is the rigid plate through special rigidity stainless steel sheet, in 12 side of obturation sample, outside
Side is relatively smooth, and the inside directly contacted with obturation is abrasive material, to simulate the friction of mine filling body and peripheral rock
Power increases the accuracy of test.
8. a kind of unilateral side according to claim 1 exposes big stage afterwards filling body unstable failure test device and method,
It is characterized by: the screw rod 9 is the threaded rigid iron of special processing, the fixed isolation up and down of cooperation hexagonal screw thread 13
Plate can carry out height adjustment to axial reaction component 1 when necessary and reach simulation to test the obturation test specimen of different aspect ratios
The stability of different size stope filling bodies.
9. a kind of unilateral big stage afterwards filling body unstable failure test method of exposure, characteristic is, using such as claim 1
To 8 described in any item unilateral big stage afterwards filling body unstable failure test devices of exposure, include the following steps:
A, axial reaction component 1 and pedestal 11 are assembled into bracket loading test platform by lateral reaction steelframe 10, with the cooperation of screw rod 9 six
Angle screw thread 13 is fixed.
B, test obturation sample 12 used is placed on the bearing bottom plate 5 in experimental rig, is placed therewith in its each face
Corresponding side plate 8 gives obturation formula by side plate 8 using axially self loading system 3 and lateral auto-loading system 7
Sample 12 pressurizes, when sample side reaches the displacement constraint of practical mine, top stop after reaching the roof pressure of practical mine plus
Pressure.
C, the axial compressive force that obturation test specimen 12 receives is recorded using intelligent axial force transducer 2 and intelligent side force snesor 6
And lateral pressure, the axial displacement and side that obturation test specimen 12 generates during loading are recorded using intelligent displacement sensor 4
To displacement.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810748787.8A CN109141518A (en) | 2018-07-10 | 2018-07-10 | A kind of big stage afterwards filling body unstable failure test device of unilateral exposure and method |
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| CN201810748787.8A CN109141518A (en) | 2018-07-10 | 2018-07-10 | A kind of big stage afterwards filling body unstable failure test device of unilateral exposure and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110186746A (en) * | 2019-04-22 | 2019-08-30 | 浙江大学 | A kind of holding laterally and axially vertical structural test loading device and test method |
| 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 |
| CN112903462A (en) * | 2021-02-04 | 2021-06-04 | 太原理工大学 | Device and method for testing bearing capacity of single-row group column in horizontal goaf under double-shaft loading |
| CN113218759A (en) * | 2021-05-08 | 2021-08-06 | 北京科技大学 | Filling body double-shaft loading system reconstructed based on single-shaft testing machine and using method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110186746A (en) * | 2019-04-22 | 2019-08-30 | 浙江大学 | A kind of holding laterally and axially vertical structural test loading device and test method |
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| 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 |
| CN112903462A (en) * | 2021-02-04 | 2021-06-04 | 太原理工大学 | Device and method for testing bearing capacity of single-row group column in horizontal goaf under double-shaft loading |
| CN113218759A (en) * | 2021-05-08 | 2021-08-06 | 北京科技大学 | Filling body double-shaft loading system reconstructed based on single-shaft testing machine and using method |
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