CN204594812U - Quiet-dynamic compound loading device of a kind of rock burst simulated experiment - Google Patents
Quiet-dynamic compound loading device of a kind of rock burst simulated experiment Download PDFInfo
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- CN204594812U CN204594812U CN201520190053.4U CN201520190053U CN204594812U CN 204594812 U CN204594812 U CN 204594812U CN 201520190053 U CN201520190053 U CN 201520190053U CN 204594812 U CN204594812 U CN 204594812U
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- force transmitting
- transmitting board
- energy storage
- storage capsule
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Abstract
Quiet-dynamic compound loading device of a kind of rock burst simulated experiment, comprise the annular energy storage capsule be set on hollow stationary shaft, the outer wall of annular energy storage capsule can recline with the arc force transmitting board of the expansion radial outward movement of annular energy storage capsule mutually with one group, the outside of arc force transmitting board by energy-stored spring with and the one group arc load plate corresponding with arc force transmitting board connect, hollow stationary shaft fixedly mounts disc side direction baffle plate, arc force transmitting board can laterally slide by the radial trapezoidal guide slot offered of baffle plate, and drive the pointer movement connected with rod-pulling type displacement transducer, arc force transmitting board is interconnected by the arc slide plate being placed in its arc chute.Device is embedded in the precalculated position in empirical model, static load and the dynamic loading condition of rock burst generation can be simulated by annular energy storage capsule and energy-stored spring, can obtaining by the fluid pressure detecting energy storage capsule in real time the critical static load that coal and rock in experimentation destroys, accurately can calculate by detecting energy-stored spring compression displacement amount the elasticity energy that energy-stored spring discharges under critical load shape body.
Description
Technical field
The utility model relates to mine safety experimental study, particularly a kind of quiet-dynamic compound loading device for rock burst simulated experiment.
Background technology
Rock burst is dynamic disaster main in mining engineering.Along with the increase day by day of mining mineral resource scale and mining depth, the rock burst generation frequency and destructiveness are also further strong, badly influence the safe working in colliery and the life security of field staff.The mechanism of production exploring rock burst is focus and the difficult point of current Mineral Engineering and rock mechanics subject, is also the basis improving rock blast hazard predication and prevention technology simultaneously.Because current rock burst mechanism is still not exclusively clear, adopt the method establishment Prediction of Rock Burst system of mathematics or mechanics very difficult, therefore adopt the technique study rock burst genesis mechanism of simulation test to be paid attention to gradually.But the power at present for simulation test loads majority employing explosion loading, and explosion loads the power destruction process by producing a large amount of high temperature and high pressure gas participation models, has very big-difference with the rock burst generating process in reality; In addition, the vibration frequency that explosively loading produces and elasticity in coal and rock in reality can discharge the vibration frequency caused and differ comparatively large, cause analog reslt error comparatively large, are difficult to the genesis mechanism accurately disclosing rock burst.The process breeding and occur of rock blast hazard, in fact that exploitation disturbance causes the energy in face surrounding rock body to build up and the process discharged suddenly, from mechanical process, the complicated destructive process of coal and rock under static load and dynamic loading compound action around a stope, the model investigation carrying out rock burst must meet the mechanical condition of rock burst generation, for this reason, a kind of test unit meeting this mechanical condition is needed.
Utility model content
The purpose of this utility model be exactly based on above-mentionedly needing to provide that a kind of structure is simple, cost is low, widely applicable, quiet-dynamic compound loading device of rock burst simulated experiment that can realize Static and dynamic compound loading.
For achieving the above object, quiet-dynamic compound loading device of the rock burst simulated experiment that the utility model provides, comprise the annular energy storage capsule be set on hollow stationary shaft, annular energy storage capsule connects with feed tube, the outer wall of annular energy storage capsule can recline with the arc force transmitting board of the expansion radial outward movement of annular energy storage capsule mutually with one group, the outside of arc force transmitting board is connected by one group of arc load plate that energy-stored spring is corresponding with arc force transmitting board, annular energy storage capsule, arc force transmitting board, the both sides of energy-stored spring and arc load plate have the disc side direction baffle plate be fixedly mounted on hollow stationary shaft respectively.
The both sides of the chest side of described arc force transmitting board has trapezoidal slide unit respectively that arrange along its center line, there is thimble at the center of one of them trapezoidal slide unit, radially the trapezoidal guide slot corresponding with trapezoidal slide unit is offered respectively at the inner face of side direction baffle plate, the bottom land of the trapezoidal guide slot of a side direction baffle plate wherein is longitudinally provided with the narrow slit penetrating side direction baffle plate, described thimble stretches out from this narrow slit, can move along narrow slit.
The left and right sides of described arc force transmitting board is respectively equipped with arc chute, arc slide plate is equipped with in the arc chute of adjacent arc force transmitting board, there is the projection matched with arc chute at the both ends of arc slide plate, and what outer end this projection restricted of arc chute skidded off from arc chute inside contracts edge.
The described energy-stored spring metal material that spring dynamic shock frequency can be made to be positioned at actual coal and rock vibrations dominant frequency frequency range makes.
The beneficial effects of the utility model are:
1, the utility model device, the static load that the hydraulic pressure adopting annular energy storage capsule to produce and energy-stored spring combination load mode simulation rock burst occur and dynamic loading condition, overcome the defect that existing explosively loading can only provide single dynamic loading; Avoid the gases affect of explosively loading; By the dominant frequency frequency range selecting the material of energy-stored spring to make spring dynamic shock frequency approaches coal and rock shake, simulate the load-up condition that rock burst occurs more realistically.
2, the utility model device is utilized, by detecting the fluid pressure in annular energy storage capsule in real time, the critical static load information that in model test process, coal and rock is destroyed can be caught, energy-stored spring compression displacement amount is detected by adopting displacement transducer, accurately can calculate the elasticity energy that energy-stored spring discharges under critical load shape body, for the power destruction process of Study on Coal rock mass under impact loading provides authentic data.
Accompanying drawing explanation
Accompanying drawing is the structural representation of the utility model embodiment, wherein:
Fig. 1 is along its longitudinal sectional view;
Fig. 2 is along Figure 1A-A cut-open view;
Fig. 3 is the 3 dimensional drawing of arc force transmitting board in Fig. 1;
Fig. 4 is the left view of right side side direction baffle plate in Fig. 2.
In figure: 1-arc load plate; 2-arc slide plate; 3-arc force transmitting board; 3-1-arc chute; The trapezoidal slide unit of 3-2-; 3-3-thimble; 3-4-pin hole; 4-annular energy storage capsule; 5-feed tube; 6-side direction baffle plate; 6-1-trapezoidal guide slot; 6-2-(bottom gathering sill) narrow slit; The hollow stationary shaft of 7-; 8-energy-stored spring.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described further.
As depicted in figs. 1 and 2, quiet-dynamic compound loading device of the present embodiment rock burst simulated experiment, its annular energy storage capsule 4 is set on hollow stationary shaft 7, the internal ring wall of annular energy storage capsule establishes feed tube 5, feed tube passes from hollow stationary shaft through the aperture that hollow stationary shaft axial wall is offered, external pressure transducer and fluid filled devices (not shown).The arc force transmitting board 3 that the outer wall being close to annular energy storage capsule has eight block structures identical, the left and right sides of every block arc force transmitting board is respectively equipped with arc chute 3-1, arc slide plate 2 is placed in the chute of adjacent arc force transmitting board, there is the projection matched with arc chute at the two ends of arc slide plate, what outer end this projection restricted of arc chute skidded off from arc chute inside contracts edge, eight pieces of arc force transmitting boards connect into an annular entirety by arc slide plate, when annular energy storage capsule is expanded, eight pieces of arc force transmitting boards keep synchronous outwards motion, even transferring energy, simultaneously arc slide plate protects annular energy storage capsule can not outwards expansion from arc force transmitting board outwards moves the gap that produces, produce distortion.Every block arc force transmitting board as shown in Figure 3, two rib side has trapezoidal slide unit 3-2 respectively that arrange along its center line, there is thimble 3-3 (for cylinder lever connecting rod formula displacement transducer) at the center of a trapezoidal slide unit wherein, and arc force transmitting board 3 is connected with the inner of energy-stored spring 8 by the pin hole 3-4 on its outer side center position (corresponding trapezoidal slide unit position) and pin; The outer end of energy-stored spring is connected by pin hole and pin with eight pieces of corresponding with arc force transmitting board respectively arc load plate 1, eight pieces of end to end one-tenth annulars of arc load plate; The energy-stored spring metal material that its dynamic shock frequency can be made to be positioned at actual coal and rock vibrations dominant frequency frequency range makes.Disc side direction baffle plate 6 is fixedly mounted respectively by being threaded on hollow stationary shaft 7 in the both sides of annular energy storage capsule, arc force transmitting board, energy-stored spring and arc load plate.As shown in Figure 4, at the inner face of two side direction baffle plates, radially offer the trapezoidal guide slot 6-1 corresponding with the trapezoidal slide unit 3-2 of arc force transmitting board respectively, the bottom land of the trapezoidal guide slot of side direction baffle plate (in Fig. 2 right side side direction baffle plate) wherein longitudinally offers the narrow slit 6-2 penetrating side direction baffle plate along it, described thimble 3-3 is stretched out from this narrow slit, and can slide in trapezoidal guide slot 6-1 along this narrow slit with trapezoidal slide unit 3-2 and move.
When using above-mentioned charger, the feed tube of annular energy storage capsule is connected by pressure transducer and fluid filled devices (not shown), the thimble that rod-pulling type displacement transducer (not shown) and charger stretch out side direction baffle plate is connected, charger is embedded in the precalculated position in empirical model by the hollow screw (not shown) that utilization is threaded with hollow stationary shaft, then by feed tube to injection pressure liquid in annular energy storage capsule, the pressure signal of liquid is provided by pressure transducer, annular energy storage capsule is radially expanded under fluid pressure effect, promote the arc force transmitting board trapezoidal guide slot laterally on baffle plate outwards to move, compressed energy-storage spring, make the thimble on the trapezoidal slide unit of arc force transmitting board move along the narrow slit bottom trapezoidal guide slot simultaneously, the rod-pulling type displacement transducer be connected with thimble provides thimble displacement signal (thimble displacement is exactly spring-compressed displacement), energy-stored spring applies static load by arc load plate to model while storage elasticity energy in by compression process.After this carry out model excavation, form tunnel or stope, along with the carrying out of excavation, the tunnel in model or face surrounding rock firmness degree under dead weight reduces gradually, is finally entirely destroyed, the moment of destroying, the elastic force of energy-stored spring release capable become dynamic loading.Simulate quiet-dynamic combined load when rock burst occurs thus.The spring-compressed displacement that the fluid pressure detected by pressure transducer and rod-pulling type displacement transducer are detected can calculate the elastic energy of energy-stored spring release, for the power destruction process of Study on Coal rock mass under impact loading provides data.
The size of all parts in this charger, comprises the quantity of arc force transmitting board and arc load plate and width, energy that the parameter such as rigidity and length of spring can be gathered according to simulated different coal and rock designs.
Claims (4)
1. quiet-dynamic compound loading device of rock burst simulated experiment, it is characterized in that: comprise the annular energy storage capsule (4) be set on hollow stationary shaft (7), annular energy storage capsule connects with feed tube (5), the outer wall of annular energy storage capsule can recline with the arc force transmitting board (3) of the expansion radial outward movement of annular energy storage capsule mutually with one group, the outside of arc force transmitting board is connected by one group of arc load plate (1) that energy-stored spring (8) is corresponding with arc force transmitting board, annular energy storage capsule, arc force transmitting board, the both sides of energy-stored spring and arc load plate have the disc side direction baffle plate (6) be fixedly mounted on hollow stationary shaft respectively.
2. quiet-dynamic compound loading device of rock burst simulated experiment according to claim 1, it is characterized in that: on the both sides of the chest side of described arc force transmitting board (3), have the trapezoidal slide unit (3-2) arranged along its center line respectively, there is thimble (3-3) at the center of one of them trapezoidal slide unit, the trapezoidal guide slot (6-1) corresponding with trapezoidal slide unit is radially offered respectively at the inner face of side direction baffle plate (6), the bottom land of the trapezoidal guide slot of a side direction baffle plate wherein is longitudinally provided with the narrow slit (6-2) penetrating side direction baffle plate, described thimble (3-3) stretches out from this narrow slit, can move along narrow slit.
3. quiet-dynamic compound loading device of rock burst simulated experiment according to claim 1 and 2, it is characterized in that: the left and right sides of described arc force transmitting board (3) is respectively equipped with arc chute (3-1), arc slide plate (2) is equipped with in the arc chute of adjacent arc force transmitting board, there is the projection matched with arc chute at the both ends of arc slide plate, and what outer end this projection restricted of arc chute skidded off from arc chute inside contracts edge.
4. quiet-dynamic compound loading device of rock burst simulated experiment according to claim 1, is characterized in that: described energy-stored spring (8) metal material that spring dynamic shock frequency can be made to be positioned at actual coal and rock vibrations dominant frequency frequency range makes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520190053.4U CN204594812U (en) | 2015-03-31 | 2015-03-31 | Quiet-dynamic compound loading device of a kind of rock burst simulated experiment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520190053.4U CN204594812U (en) | 2015-03-31 | 2015-03-31 | Quiet-dynamic compound loading device of a kind of rock burst simulated experiment |
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| CN204594812U true CN204594812U (en) | 2015-08-26 |
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| CN201520190053.4U Withdrawn - After Issue CN204594812U (en) | 2015-03-31 | 2015-03-31 | Quiet-dynamic compound loading device of a kind of rock burst simulated experiment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104697868A (en) * | 2015-03-31 | 2015-06-10 | 辽宁工程技术大学 | Static-dynamic combined loading device used for rockburst simulation experiment |
| CN106970023A (en) * | 2017-05-11 | 2017-07-21 | 北京科技大学 | A kind of passive load testing machine of expansive rock expansion characteristics test |
| CN113340735A (en) * | 2021-07-05 | 2021-09-03 | 吉林大学 | Self-sensing elastic energy storage and ejection release testing device for superelastic memory alloy wire |
-
2015
- 2015-03-31 CN CN201520190053.4U patent/CN204594812U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104697868A (en) * | 2015-03-31 | 2015-06-10 | 辽宁工程技术大学 | Static-dynamic combined loading device used for rockburst simulation experiment |
| CN104697868B (en) * | 2015-03-31 | 2017-04-05 | 辽宁工程技术大学 | A kind of bump simulation experiment is with quiet dynamic Combined Loading device |
| CN106970023A (en) * | 2017-05-11 | 2017-07-21 | 北京科技大学 | A kind of passive load testing machine of expansive rock expansion characteristics test |
| CN113340735A (en) * | 2021-07-05 | 2021-09-03 | 吉林大学 | Self-sensing elastic energy storage and ejection release testing device for superelastic memory alloy wire |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150826 Effective date of abandoning: 20170405 |