CN107860546A - A kind of impact wave Experimental mimic system - Google Patents
A kind of impact wave Experimental mimic system Download PDFInfo
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- CN107860546A CN107860546A CN201711394157.7A CN201711394157A CN107860546A CN 107860546 A CN107860546 A CN 107860546A CN 201711394157 A CN201711394157 A CN 201711394157A CN 107860546 A CN107860546 A CN 107860546A
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- outer barrel
- heavy
- blast
- impact wave
- disc holder
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M9/00—Aerodynamic testing; Arrangements in or on wind tunnels
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- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention relates to non-coal mine underground mining field, more particularly to a kind of impact wave Experimental mimic system.Including：Gas push device, blast generation device and the blast flow rate measuring device set gradually from top to bottom；Gas push device is used for the inbreak form and inbreak intensity for simulating goaf top plate under different condition；Blast generation device is used to show the structure of different stopes and the property of covering layer；Blast flow rate measuring device is used for the intensity of impact wave caused by experimental simulation system described in quantitative measurment.The present invention can be in the form of the different inbreaks of systematic research stope goaf top plate, the inhibition that inbreak intensity and covering layer impact to blast.
Description
Technical field
The present invention relates to non-coal mine underground mining field, more particularly to a kind of impact wave Experimental mimic system.
Background technology
At present, in the underground mine using Mining by caving method, as recovery process promotes and same point from top to bottom
The continuous expansion of section limit of mining, stope area constantly expand with height, and the goaf volume of formation is also constantly expanding.For
The preferable goaf top plate of soundness, show in initial stage of production (when goaf area and small volume) without obvious displacement
As, but with the continuous increase of top plate area and volume, the ability of top plate load-bearing dead weight and top rock mass pressure is increasingly
Difference, once by the external world interference or reach capacity exposed area when, the top plate of large area is caving within a short period of time, due to weight
Power effect produces serious impact failure, while the air moment in goaf is discharged, and forms impact wave.If in goaf
Lack the covering layer of adequate thickness between ore removal route, impact wave will cause great prestige to underground equipment and personnel
The side of body.
Therefore fully realize and study the inhibition of covering layer under different condition to impact wave, for adjusting mine
Structural parameters, improve mining technology, form scientific and reasonable safe covering layer and have great importance.
At present, customized parameter is single in existing goaf top plate inbreak blast impact test, it is impossible to the body of system
Reveal the inhibition that the inbreak form, inbreak intensity and covering layer of goaf top plate are impacted to blast, be unfavorable for gas
The research of the scientific system of unrestrained impact test.
Present invention
(1) technical problems to be solved
The resistance impacted for the inbreak form, inbreak intensity and covering layer of systematic research goaf top plate to blast
Hinder effect, the present invention provides a kind of impact wave Experimental mimic system.
(2) technical scheme
To achieve the above object, the main technical schemes that the present invention uses include：
A kind of impact wave Experimental mimic system, including：Gas push device, the blast set gradually from top to bottom produces
Device and blast flow rate measuring device；The gas push device is used for the inbreak form for simulating goaf top plate under different condition
And inbreak intensity；The blast generation device is used to show the structure of different stopes and the property of covering layer；The gas
Unrestrained flow rate measuring device is used for the intensity of impact wave caused by experimental simulation system described in quantitative measurment.
Further, the gas push device includes：Crane gear, again chucking device, disk, weight disc holder and suspension bracket；
With being connected at the top of the suspension bracket, the chucking device is connected the crane gear with the lower end of the crane gear；It is described
Chucking device is used for clamping and release to the heavy disc holder；The heavy disk is set in the heavy disc holder；The suspension bracket
Bottom is provided with some pulleys.
Further, the heavy disc holder includes connecting shaft, bottom disc and first crossbeam；The bottom disc passes through
Connecting shaft is connected with first crossbeam, and the heavy disk is fixed in the heavy disc holder by connecting shaft.
Further, the centre of the heavy disk, the bottom disc and the first crossbeam is equipped with pilot hole；
The bottom disc and the heavy disk are disc, and the diameter of the heavy disk is less than the diameter of the bottom disc.
Further, the gas generation apparatus includes：Outer barrel, guiding mechanism and workbench；The guiding mechanism position
In the outer barrel top placed vertically, and it is connected with the outer barrel；The workbench is located at the side of the outer barrel；Institute
State and be disposed with installing port, granular media loading port and blast on outer barrel lateral wall from the top down and go out mouth；The outer barrel bottom
Portion is provided with buffer unit.
Further, the guiding mechanism includes：Guide rod, guide rod fixed mount and second cross beam；The guide rod
The bottom of the outer barrel is vertically arranged to, and is overlapped with the axis of the outer barrel；The height of the guide rod is higher than the outer barrel
Height；The guide rod fixed mount is installed on the outer drum outer wall, and the second cross beam is installed on the guide rod and fixed
On the top of frame；The second cross beam is provided centrally with through hole；The through hole can allow the passing through of the guide rod.
Further, the pilot hole can allow the guide rod to pass through；The diameter of the bottom disc is less than described
The interior diameter of outer barrel.
Further, the blast flow rate measuring device includes：Base, probe, airspeedometer and computer；The probe peace
Loaded on the base, the probe is connected by the airspeedometer with the computer.
Further, the probe is located at the front that the blast goes out mouth.
A kind of method of impact wave experiment, comprises the following steps：
1) granular media of certain thickness and grading is loaded by outer barrel sealing according to covering layer property to be simulated, described outer
The air-flow of cylinder goes out mouth and sets probe；
2) according to the disk, and the heavy disk is loaded into a heavy disc holder again of inbreak intensity selection one of goaf top plate to be simulated
Interior fixation；
3) the heavy disc holder is passed through into guide rod, transfers the heavy disc holder, and it is described to fall into the heavy disc holder
In outer barrel certain depth；
4) start chucking device switch, the heavy disc holder and the heavy disk is fallen in the form of freely falling body, fell
Cheng Zhong, a gas part is gone out from the gap between the heavy disc holder and the outer barrel in the outer barrel, and a part is from described
Blast is gone out mouth and gone out, and the probe and airspeedometer can monitor the speed of impact wave, and send data to the computer；
5) start crane gear, the heavy disc holder is lifted out the outer barrel, then by the granular media from the air-flow
Go out mouth releasing, off-test.
(3) beneficial effect
The beneficial effects of the invention are as follows：A kind of impact wave Experimental mimic system of the present invention, passes through gas push device
To simulate the inbreak form of goaf top plate under different condition and inbreak intensity, adopted by blast generation device to show difference
The structure of field and the property of covering layer, are produced by blast flow rate measuring device come experimental simulation system described in quantitative measurment
Impact wave intensity, it is achieved thereby that the inbreak form, inbreak intensity and covering layer to goaf top plate are to blast
The system research of the inhibition of impact, while the different impact waves that can analyze and research cause to underground equipment and staff
Influence；
The whole process of simulation goaf top plate inbreak is realized using gas push device cooperation blast generation device；
Meanwhile the setting of guiding mechanism so that can continue held stationary in disk dropping process again.
Brief description of the drawings
Fig. 1 is the structural representation of impact wave Experimental mimic system provided in an embodiment of the present invention；
Fig. 2 is the structural representation of gas push device provided in an embodiment of the present invention；
Fig. 3 is heavy disk provided in an embodiment of the present invention and the structural representation of weight disc holder；
Fig. 4 is the structural representation of blast generation device provided in an embodiment of the present invention；
Fig. 5 is the structural representation of blast flow rate measuring device provided in an embodiment of the present invention；
Fig. 6 is the flow chart of impact wave test method provided in an embodiment of the present invention.
【Description of reference numerals】
1：Electric hoist；2：Hydraulically operated fixture；3：Disk again；4：Weight disc holder；5：Guide rod fixed mount；6：Guide rod；7：Work
Platform；8：Suspension bracket；9：Steel drum；10：Pilot hole；11：Granular media bed course；12：Guide rod fixed cross beam；13：Probe；14：Magnetic bottom
Seat；15：Hot wire film anemometer；16：Computer；
41：Bottom disc；42：Connecting shaft；43：Weight disc holder crossbeam；
91：Guide rod installing port；92：Granular media loading port；93：Blast goes out mouth；94：Cushion pad.
Embodiment
In order to preferably explain the present invention, in order to understand, below in conjunction with the accompanying drawings, by embodiment, to this hair
It is bright to be described in detail.
A kind of impact wave Experimental mimic system as shown in Figure 1, including the gas push dress set gradually from top to bottom
Put, blast generation device and blast flow rate measuring device；Gas push device is used to simulate goaf top plate under different condition
Inbreak form and inbreak intensity；Blast generation device is used to show the structure of different stopes and the property of covering layer；Gas
Unrestrained flow rate measuring device is used for the intensity of impact wave caused by quantitative measurment experimental simulation system.
Gas push device includes：Crane gear, again chucking device, disk 3, weight disc holder 4 and suspension bracket 8, in the present embodiment
Crane gear is electric hoist 1, the hydraulically operated fixture 2 that chucking device uses.Gas push device annexation as shown in Figure 2 is：
Electric hoist 1 is connected with the top of suspension bracket 8, and hydraulically operated fixture 2 is connected with the lower end of electric hoist 1；By the switch of hydraulically operated fixture 2 come
Control hydraulically operated fixture 2 and the clamping and release of weight disc holder 4；Disk 3 is set in weight disc holder 4 again；Suspension bracket 8 is in the present embodiment
Triangular prism shaped, special instruction, suspension bracket 8 of the invention is not limited to triangular prism shape, and the bottom of suspension bracket 8 is provided with three cunnings
Wheel.
Weight disc holder 4 includes connecting shaft 42, bottom disc 41 and first crossbeam.In the present embodiment, first crossbeam is attached most importance to disk
Yoke crosstie 43, as shown in figure 3, being provided with two connecting shafts 41 on bottom disc 41, two connecting shafts 41 are apart from bottom disc
The distance in 41 centers of circle is equal, and the line of two connecting shafts 41 passes through connection by the center of circle of bottom disc 41, bottom disc 41
Axle 42 and weight disc holder crossbeam 43 connect；Some circular holes are provided with disk 3 again, the diameter of circular hole is more than the diameter of connecting shaft 42,
By when disk 3 is placed in weight disc holder 4 again, the circular hole of disk 3 again is passed through into connecting shaft 41, so that disk 3 is fixed on weight pan arrest
On frame 4.
Meanwhile the centre of disk 3, bottom disc 41 and weight disc holder crossbeam 43 is equipped with pilot hole 10 again；Justify bottom
Disk 41 and disk 3 is disc again, again the diameter of disk 3 be less than the diameter of bottom disc 41.
Gas generation apparatus includes：Outer barrel, guiding mechanism and workbench 7, the steel drum 9 that outer barrel is selected in the present embodiment.
As shown in figure 4, guiding mechanism is located at the top of steel drum 9 placed vertically, and it is connected with steel drum 9；Workbench 7 is located at steel drum 9
Side；Guide rod installing port 91, granular media loading port 92 and blast are disposed with the lateral wall of steel drum 9 from the top down and goes out mouth
93；The interior bottom portion of steel drum 9 is provided with buffer unit, and the buffer unit in the present embodiment is cushion pad 94；Set on buffer unit
There is granular media bed course 11.
Guiding mechanism includes：Guide rod 6, guide rod fixed mount 5 and second cross beam, second cross beam is oriented in the present embodiment
Bar fixed cross beam 12.As shown in figure 4, guide rod 6 is vertically arranged to the bottom of steel drum 9, and overlapped with the axis of steel drum 9；It is oriented to
The height of bar 6 is higher than the height of steel drum 9；The length of guide rod fixed cross beam 12 is identical with the overall diameter of steel drum 9, and guide rod is fixed
Frame 5 is installed on the outer wall of steel cylinder 9, and guide rod fixed cross beam 12 is installed on the top of guide rod fixed mount 5；Guide rod is fixed horizontal
Beam 12 is provided centrally with the through hole that guide rod 6 can be allowed to pass through.Guide rod 6, guide rod fixed mount 5 and guide rod fixed cross beam 12
Mutual cooperation the steady fall of disk 3 again can be achieved.
Guide rod 6 includes the first quarter butt, the second quarter butt and the 3rd quarter butt, one end of the first quarter butt and the 3rd in the present embodiment
Both ends of the one end of quarter butt respectively with the second quarter butt are connected, and are connected through a screw thread between quarter butt.
Pilot hole 10 is circle in the present embodiment, and special instruction, pilot hole of the invention is not limited to circle, also may be used
To be square, rhombus etc.；Accordingly, guide rod 6 is cylinder in the present embodiment, special instruction, guide rod 6 of the invention
It is not limited to cylinder.
The diameter of pilot hole 10 is more than the diameter of guide rod 6 in the present embodiment；The diameter of bottom disc 41 is less than steel drum 9
Interior diameter.
Blast flow rate measuring device includes：Base, probe 13, airspeedometer and computer 16；In the present embodiment, base uses
Be magnetic bases 14, airspeedometer is using hot wire film anemometer 15.As shown in figure 5, probe 13, which is located at blast, goes out mouth
93 front, probe 13 are installed on magnetic bases 14, and probe 13 is connected by hot wire film anemometer 15 with computer 16
Connect.Fig. 6 is the flow chart of impact wave test method provided in an embodiment of the present invention.
A kind of operating method of impact wave Experimental mimic system, comprises the following steps：
1) according to covering layer property by the granular media of certain thickness and grading from granular media loading port 92 load steel drum 9 formed it is scattered
Body bed course 11, granular media loading port 92 is then added into rubber seal with curved plate, subsequently will by guide rod installing port 91
Three quarter butts install, and form guide rod 6；
2) disk 3 again is loaded into weight disc holder 4 according to the inbreak intensity of goaf top plate to be simulated and fastened；
3) travelling bridge 8, start electric hoist 1 and transfer hydraulically operated fixture 2, hydraulically operated fixture 2 is clamped weight disc holder 4, start electricity
Weight disc holder 4 is promoted to the top of steel drum 9 (now guide rod fixed mount entablature 12 is not installed also) by cucurbit 1；
4) travelling bridge 8 makes the pilot hole 10 of weight disc holder 4 and the centering of guide rod 6, decentralization weight disc holder 4, wears guide rod 6
Pilot hole 10 and exposure certain length (being sealed between guide rod 6 and weight disc holder 4 using sealed bearings) are crossed, and makes weight disc holder
Fall 4 and enter the inside certain depth of steel drum 9, be directed to bar fixed cross beam 12 and be installed on guide rod fixed mount 5；
5) start hydraulically operated fixture 2 to switch, make weight disc holder 4 and disk 3 is fallen in the form of freely falling body again, in dropping process,
Gap of the gas part between weight disc holder 4 and steel drum 9 is gone out in steel drum 9, and a part goes out mouth from the bottom blast of steel drum 9
93 go out, and going out the probe 13 (probe is according to stope present situation arrangement) that mouth 93 sets and hot wire film anemometer 15 in blast can supervise
Survey the speed of impact wave；
6) the solid crossbeam 12 of bar is directed to dismantle；Guide rod installing port 91 is opened, is directed to two sections of dismountings on bar 6；Lower tapping
Fixture 2 is pressed, clamps weight disc holder 4 from guide rod installing port 10 with hydraulically operated fixture 2, starts electric hoist 1, weight disc holder 4 is carried
It is raised to the top of guide rod fixed mount 5；Travelling bridge 8 makes weight disc holder 4 leave the scope of steel drum 9, and decentralization weight disc holder 4 arrives ground；
7) granular media bed course 11 is gone out into mouth 93 from blast to release, off-test.
In experiment difference can be simulated by adjusting again the quality of disk 3, again disk 3 and 9 barrels of wall gaps of steel drum and descent altitude
The roof collapse intensity and inbreak form of scale, the interior granular media bed course 11 loaded of steel drum 9 can simulate covering rock of different nature
Layer, goes out the size of mouth 93 by the property and the bottom blast of steel drum 9 that change granular media bed course 11 and can measure and produced under different condition
Impact wave and the different impact waves of analysis and research influenceed to caused by underground equipment and staff.
In the case where not conflicting, the feature in above-mentioned embodiment and embodiment can be mutually combined.It is right above
The description that the specific embodiment of the present invention is carried out is simply to illustrate that the technology path and feature of the present invention, its object is to allow this
Technical staff in field can understand present disclosure and implement according to this, but the present invention is not limited to above-mentioned particular implementation side
Formula.Every various change made within the scope of the claims or modification, it should all cover the protection model in the present invention
In enclosing.
Claims (10)
- A kind of 1. impact wave Experimental mimic system, it is characterised in that including：The gas push dress set gradually from top to bottom Put, blast generation device and blast flow rate measuring device；The gas push device is used for the inbreak form and inbreak intensity for simulating goaf top plate under different condition；The blast generation device is used to show the structure of different stopes and the property of covering layer；The blast flow rate measuring device is used for the intensity of impact wave caused by experimental simulation system described in quantitative measurment.
- A kind of 2. impact wave Experimental mimic system according to claim 1, it is characterised in that the gas push device Including：Crane gear, again chucking device, disk, weight disc holder and suspension bracket；With being connected at the top of the suspension bracket, the chucking device is connected the crane gear with the lower end of the crane gear； The chucking device is used for clamping and release to the heavy disc holder；The heavy disk is set in the heavy disc holder；The suspension bracket bottom is provided with some pulleys.
- 3. a kind of impact wave Experimental mimic system according to claim 2, it is characterised in that the heavy disc holder includes Connecting shaft, bottom disc and first crossbeam；The bottom disc is connected by connecting shaft with first crossbeam, and the heavy disk is fixed on the heavy disc holder by connecting shaft On.
- 4. a kind of impact wave Experimental mimic system according to claim 3, it is characterised in that the heavy disk, the bottom The centre of portion's disk and the first crossbeam is equipped with pilot hole；The bottom disc and the heavy disk are disc, and the diameter of the heavy disk is less than the diameter of the bottom disc.
- A kind of 5. impact wave Experimental mimic system according to claim 1, it is characterised in that the gas generation apparatus Including：Outer barrel, guiding mechanism and workbench；The guiding mechanism is located at the outer barrel top placed vertically, and is connected with the outer barrel；The workbench position In the side of the outer barrel；Installing port, granular media loading port and blast are disposed with the outer barrel lateral wall from the top down and goes out mouth；The outer barrel Interior bottom portion is provided with buffer unit.
- A kind of 6. impact wave Experimental mimic system according to claim 5, it is characterised in that the guiding mechanism bag Include：Guide rod, guide rod fixed mount and second cross beam；The guide rod is vertically arranged to the bottom of the outer barrel, and is overlapped with the axis of the outer barrel；The height of the guide rod Height of the degree higher than the outer barrel；The guide rod fixed mount is installed on the outer drum outer wall, and the second cross beam is installed on On the top of the guide rod fixed mount；The second cross beam is provided centrally with through hole；The through hole can allow described lead To passing through for bar.
- 7. a kind of impact wave Experimental mimic system according to claim 2-6, it is characterised in that the pilot hole can allow The guide rod passes through；The diameter of the bottom disc is less than the interior diameter of the outer barrel.
- A kind of 8. impact wave Experimental mimic system according to claim 1, it is characterised in that the blast flow velocity measurement Device includes：Base, probe, airspeedometer and computer；The probe is installed on the base, and the probe is connected by the airspeedometer with the computer.
- 9. a kind of impact wave Experimental mimic system according to claim 8, it is characterised in that the probe is positioned at described Blast goes out the front of mouth.
- A kind of 10. method of impact wave experiment, it is characterised in that comprise the following steps：1) granular media of certain thickness and grading is loaded by outer barrel sealing according to covering layer property to be simulated, in the outer barrel Air-flow goes out mouth and sets probe；2) according to the disk, and the heavy disk is loaded in a weight disc holder admittedly again of inbreak intensity selection one of goaf top plate to be simulated It is fixed；3) the heavy disc holder is passed through into guide rod, transfers the heavy disc holder, and the heavy disc holder is fallen into the outer barrel In certain depth；4) start chucking device switch, the heavy disc holder and the heavy disk is fallen in the form of freely falling body, in dropping process, A gas part is gone out from the gap between the heavy disc holder and the outer barrel in the outer barrel, and a part is rushed from the blast Outlet is gone out, and the probe and airspeedometer can monitor the speed of impact wave, and send data to the computer；5) start crane gear, the heavy disc holder is lifted out the outer barrel, then gone out the granular media from the air-flow Mouth is released, off-test.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711394157.7A CN107860546A (en) | 2017-12-21 | 2017-12-21 | A kind of impact wave Experimental mimic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711394157.7A CN107860546A (en) | 2017-12-21 | 2017-12-21 | A kind of impact wave Experimental mimic system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107860546A true CN107860546A (en) | 2018-03-30 |
Family
ID=61706787
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711394157.7A Pending CN107860546A (en) | 2017-12-21 | 2017-12-21 | A kind of impact wave Experimental mimic system |
Country Status (1)
| Country | Link |
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| CN (1) | CN107860546A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244182A (en) * | 2013-05-17 | 2013-08-14 | 长沙矿山研究院有限责任公司 | Prevention method of air shock wave disaster in mine goaf |
| CN105758616A (en) * | 2016-04-29 | 2016-07-13 | 武汉理工大学 | Testing simulation apparatus for blast due to top plate collapsing of goaf |
-
2017
- 2017-12-21 CN CN201711394157.7A patent/CN107860546A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103244182A (en) * | 2013-05-17 | 2013-08-14 | 长沙矿山研究院有限责任公司 | Prevention method of air shock wave disaster in mine goaf |
| CN105758616A (en) * | 2016-04-29 | 2016-07-13 | 武汉理工大学 | Testing simulation apparatus for blast due to top plate collapsing of goaf |
Non-Patent Citations (1)
| Title |
|---|
| 郑怀昌 等: "缓冲层在采空区冒落灾害中消减作用机理探讨", 《化工矿物与加工》 * |
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