CN209327139U - For studying the experiment loading system of rock fragmentation mechanisms under mine - Google Patents
For studying the experiment loading system of rock fragmentation mechanisms under mine Download PDFInfo
- Publication number
- CN209327139U CN209327139U CN201822062618.7U CN201822062618U CN209327139U CN 209327139 U CN209327139 U CN 209327139U CN 201822062618 U CN201822062618 U CN 201822062618U CN 209327139 U CN209327139 U CN 209327139U
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- rock
- loading system
- studying
- pressure cell
- drill steel
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- 239000011435 rock Substances 0.000 title claims abstract description 56
- 238000002474 experimental method Methods 0.000 title claims abstract description 35
- 230000007246 mechanism Effects 0.000 title claims abstract description 23
- 238000013467 fragmentation Methods 0.000 title claims abstract description 19
- 238000006062 fragmentation reaction Methods 0.000 title claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 23
- 239000010959 steel Substances 0.000 claims abstract description 23
- 239000011888 foil Substances 0.000 claims abstract description 17
- 238000011161 development Methods 0.000 claims abstract description 10
- 230000035939 shock Effects 0.000 abstract description 14
- 238000000034 method Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 4
- 238000005553 drilling Methods 0.000 description 4
- 238000009527 percussion Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 241000277275 Oncorhynchus mykiss Species 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 238000013383 initial experiment Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Earth Drilling (AREA)
Abstract
The utility model discloses a kind of for studying the experiment loading system of rock fragmentation mechanisms under mine, suitable for current hard-rock tunnel.Two pairs of foil gauges are symmetrically pasted on impact drill steel, and impact drill steel is to carrying out impact operation in shock zone；Flush type pressure cell is arranged in inside shock zone, and grouting treatment is carried out in wiring hole；The signal wire of connection flush type pressure cell and foil gauge is connected with high dynamic strain indicator, then accesses data collecting instrument and work station.Use of the utility model based on cantilevered impact development machine, the strain of drill steel part, pressure cell are recorded and analyzed to the Pressure Variation in rock gangway using foil gauge, get rid of the indoor limitation of experiment, demand power is low, it is flexible and changeable during actual arrangement, it can satisfy kinds of experiments requirement, there is very big applicability.
Description
Technical field
The utility model is applied to rock gangway under mine, and the Cracking Mechanism for being related to rock mass in rock gangway under mechanical shock acts on is asked
Topic research, and in particular to a kind of for studying the experiment load of rock gangway rock fragmentation mechanisms under mechanical shock effect under mine
System.
Background technique
China's coal-mine underground mining accounts for 90% or more of exploitation total resources at present, and the occurrence condition in coal seam is extremely multiple
Miscellaneous, with the continuous development of China's fully mechanized mining driving technology, the current country has gradually appeared a variety of picks based on desk-top heavy-duty machinery
Into technique.The form of construction work of China's stone drifting at this stage mainly has traditional drilling and blasting method and mechanical drivage method, mechanical drivage method master
Show as the piercing technique based on dintheader.Cantilevered impacts important equipment of the development machine as current mechanical drivage method, just
Gradually it is being applied in hard-rock tunnel.However due to China in terms of boom-type roadheader technical deficiency, in addition underground work people
Member mainly based on experience, lacks effective theoretical direction, boom-type roadheader often exists in the use process in rock gangway
The problem that opening is difficult, energy loss is big, therefore there are significant limitations for construction efficiency.
In recent years, being constantly progressive with science and technology, domestic and international some researchers are set by advanced experiment
Standby such as high dynamic strain indicator, Hopkinson bar equipment have carried out breakage problem of the rock under percussion under laboratory condition
And Mutual Influence Law, and certain achievement is achieved, there is certain directive significance and practical valence to practical engineering application
Value.But the experiment and research at present both at home and abroad about the Rock Masses Fractures rule under bump effect is relatively seldom, based on real
The rock crushing on border works, condition and rock gangway in view of laboratory in the gap of condition rare compared with more, only rushing indoors
It is insufficient to the guidance of real work to hit research, its maximum utility value has not been reached yet in current impact heading equipment.Cause
This, it is necessary to actual condition is tested in rock gangway, the Rock Masses Fractures and Cracking Mechanism under acting on mechanical shock carry out
Further investigation, this has important value for the promotion of the driving speed and bench device working efficiency of Practical Project.
Larger based on current laboratory condition and condition gap in rock gangway, impact experiment conclusion is to actual condition in laboratory
The problem that excavation operation guidance is insufficient, the utility model devise a kind of for studying rock gangway under mine based on stone head
The experiment loading system of rock fragmentation mechanisms under mechanical shock effect.
Utility model content
The utility model the solution is to due to the gap in laboratory and actual condition it is larger caused by experiment conclusion
The problem insufficient for actual condition guidance provides a kind of for studying underground rock gangway rock crushing under mechanical shock effect
The experiment loading system of mechanism, for studying the fracture of the stress wave, rock mass of drill steel under the percussion of development machine drill steel
The deep variation with impact variable of chisel of rule, the stress distribution law of rock heading face, the attenuation law of stress wave, rock crushing
Rule etc..
Technical solution used by the utility model is as follows:
A kind of experiment loading system for study mine under rock fragmentation mechanisms of the rock gangway under mechanical shock effect, packet
Include drill steel, strain and pressure sensor, signal wire, deformeter, data collecting instrument and work station.The utility model is based on cantilevered
Use of the development machine in coal rock tunnel is impacted, in advance fills strain-type pressure cell by drilling before carrying out rock fracture in dynamic indentation
The form of slurry is arranged in front of working face, while two groups of foil gauges are symmetrically pasted on crushing hammar drill rod, then passes through operation
Development machine to carry out impact grinding to working face.Signal is reflected into deformeter by signal wire by foil gauge and pressure cell, then
Data are stored data record to data collecting instrument, final data Acquisition Instrument to work station by deformeter.The system can be simultaneously
The pressure and strain variation of the rock mass under percussion in tunnel are collected, to study the stress wave of drill steel and dig into curve
Relationship, the Fracture of rock mass, speed, acceleration, pressure, the Stress Field Distribution for impacting drill steel head in impact process etc.
Development law.
For studying the experiment loading system of rock fragmentation mechanisms under mine, system composition includes:
Drill steel is impacted, end is fixedly installed on development machine, for providing dynamic impact problem；
Pressure cell, pre-plugged are connected to deformeter inside rock gangway, through signal wire；
Strain-ga(u)ge transducer is symmetrically pasted on drill steel, is connected to deformeter by signal wire；
Deformeter, Acquisition Instrument and work station, reception and analytical equipment as data；
Signal wire is several, is used between sensor and instrument, plays signal transmitting.
Further, the experiment loading system for being used to study rock fragmentation mechanisms under mine, along punching on drill steel
It hits direction and is pasted with two pairs of symmetrical foil gauges, foil gauge relative position can change.
Further, the experiment loading system for being used to study rock fragmentation mechanisms under mine, pressure cell use
Strain-type pressure cell, arrangement take flush type.
Further, the experiment loading system for being used to study rock fragmentation mechanisms under mine, pressure cell are arranged in
Wiring hole bottom, the quantity and distributing position of wiring hole can change.
Further, the experiment loading system for being used to study rock fragmentation mechanisms under mine, pressure cell is arranged
It needs to carry out grouting treatment behind wiring hole bottom, guarantees Rock Mass Integrality.
Further, the experiment loading system for being used to study rock fragmentation mechanisms under mine, deformeter are made simultaneously
For the signal receiving device of strain-type pressure cell and foil gauge, after deformeter transmits a signal to data collecting instrument, data are deposited
It is stored in work station.
The experiment loading system application of the utility model is expected generate the utility model has the advantages that
This experimental system is tried in actual stone head based on boom-type roadheader employed in hard-rock tunnel
It tests, where the advantage for combining foil gauge and pressure cell, the pressure and strain variation of rock mass, pricker under percussion can be determined
The stress wave of bar can calculate out digging into for drill steel by equation and waveform and dig into the relationship of curve, the speed in impact process
The development law of degree, acceleration, pressure, the Stress Field Distribution on impact drill steel head etc., so as to more clearly obtain reality
In work rock mass mechanical shock effect under Fracture, for boom-type roadheader rock breaking efficiency provide theory according to
According to.
Detailed description of the invention
Fig. 1 is the principle schematic diagram of the utility model embodiment；
Fig. 2 is the impact Rod structure schematic diagram of the utility model；
Fig. 3 is the working region and cloth hole position view of one embodiment of the utility model；
Fig. 4 is the pressure cell and wiring hole arrangement schematic diagram of one embodiment of the utility model.
Each number designation indicates in figure:
1, drill steel end, 2, drill steel, 3, drill steel impact head, 4, shock zone, 5, foil gauge, 6, signal wire a, 7, wiring
Hole, 8, strain-type pressure cell, 9, signal wire b, 10, concrete slurry, 11, signal wire b extended line, 12, high dynamic strain indicator,
13, signal wire c, 14, data collecting instrument, 15, signal wire d, 16, work station.
Specific embodiment
Where technical solution and advantage in order to further describe experiment loading system described in the utility model, below will
The embodiments of the present invention are described in detail, the content of the experiment loading system and element description are represented in the accompanying drawings, needed
It is noted that described embodiment is a part of the embodiment of the application, instead of all the embodiments.Based on the application
In embodiment, one of ordinary skilled in the art without making creative work it is obtained other implementation
Example shall fall in the protection scope of this application.
An experiment loading system embodiment shown in -4 referring to Fig.1, for studying the reality of rock fragmentation mechanisms under mine
Loading system is tested, composition includes drill steel end 1, drill steel 2, drill steel impact head 3, shock zone 4, foil gauge 5, signal wire a
6, wiring hole 7, strain-type pressure cell 8, signal wire b 9, concrete slurry 10, signal wire b extended line 11, high dynamic strain indicator
12, signal wire c 13, data collecting instrument 14, signal wire d 15, work station 16.
Referring to drill steel schematic diagram shown in Fig. 2, in the present embodiment, drill steel end 1 is connected to the vibration of boom-type roadheader
Source, the power resources as experimental data acquisition；It is disposed with two pairs of strain-ga(u)ge transducers 5 on drill steel 2, is connected to four after foil gauge 5
Root signal wire a 6, signal wire a 6 access high dynamic strain indicator 12.
Further, in the present embodiment, 4 foil gauges are disposed with, occupy four channels of deformeter 12 altogether.
Further, in the present embodiment, experiment condition belongs to the scope of dynamic test, therefore uses high dynamic strain indicator 12
It is tested, the present embodiment is used to be tested using the deformeter in nine channels.
Referring to Fig. 3, in the present embodiment, the shock zone 4 for choosing tunnel working face bottom is used as experiment trigger position,
In other embodiment work, staff can choose remaining position according to the difference of test point and carry out initial experiment.
Further, it needs to carry out bore operation, in the present embodiment, cloth in the shock zone 4 of tunnel working face in advance
Hole location is set to five, is illustrated in figure 3 the position of wiring hole 7, and in remaining embodiment, staff can want according to test
It asks and carries out the drilling of different number in different positions.
Referring to Fig. 4, drillable length in the present embodiment shows as L, places strain-type pressure cell 8 after the completion of drilling
In 7 bottom of wiring hole, the signal of strain-type pressure cell 8 is exported by signal wire b 9, will signal wire b 9 export after docking string holes 7 into
Row grouting treatment fills concrete slurry 10 for simulating the ambient stress of initial country rock in wiring hole 7 after the completion of grouting, to
It can be tested after concrete setting.
Further, in the present embodiment, strain-type pressure cell 8 is cylinder, is placed horizontally in 7 bottom of wiring hole,
It is touched so that bottom surface is round with 7 bottom connection of wiring hole.
Further, in the present embodiment, for the ease of distinguishing problem before and after concrete grouting, wiring hole 7 will be layed in
Interior signal wire is known as signal wire b 9, is known as signal wire b extension for connecting the signal wire of deformeter after completing slip casting work
Line 11.
Referring to Fig.1, in the present embodiment, You Sigen signal wire a 6 and five signal wire b extended lines access ultra dynamic strain
The signal in nine channels of instrument 12,12 9 channels of deformeter is transmitted to data collecting instrument 14 by signal wire c 13, and data are adopted
Collect instrument 14 and passes through signal wire d 15 for data record in work station 16, data acquisition.
Further, the work station is presented as the form of personal computer in underground, in view of conditions down-hole for power
Limitation, small workstation are needed using self-contained battery.
It should be noted that based on above elaboration, the deformeter that only determines for foil gauge position, number of channels is connect
The position of string holes and the description of quantity cannot be construed as a limitation of the present invention, and staff in the art can be
Experiment demand is under different conditions modified quantity and position.
It is broken for rock mass under studying mine in one kind under mechanical shock effect according to the rock gangway of the utility model embodiment
The experiment loading system of broken mechanism, described the above are this experiment loading system is discussed in detail.
Although having shown and having described the embodiment of this experiment loading system above, it is to be understood that be above
Illustratively, should not be understood as limiting the present invention, can be made on this basis according to actual demand have be directed to
The adjustment of property, to obtain different embodiments.
Claims (6)
1. the experiment loading system for studying rock fragmentation mechanisms under mine, which is characterized in that loading system, which forms, includes:
Drill steel is impacted, end is fixedly installed on development machine, for providing dynamic impact problem；
Pressure cell, pre-plugged are connected to deformeter inside rock gangway, through signal wire；
Strain-ga(u)ge transducer is symmetrically pasted on drill steel, is connected to deformeter by signal wire；
Deformeter, Acquisition Instrument and work station, reception and analytical equipment as data；
Signal wire is several, is used between sensor and instrument, plays signal transmitting.
2. according to claim 1 for studying the experiment loading system of rock fragmentation mechanisms under mine, it is characterised in that
Two pairs of symmetrical foil gauges are pasted with along impact direction on drill steel, foil gauge relative position can change.
3. according to claim 1 for studying the experiment loading system of rock fragmentation mechanisms under mine, it is characterised in that
Pressure cell uses strain-type pressure cell, and arrangement takes flush type.
4. according to claim 3 for studying the experiment loading system of rock fragmentation mechanisms under mine, it is characterised in that
Pressure cell is arranged in wiring hole bottom, and the quantity and distributing position of wiring hole can change.
5. according to claim 4 for studying the experiment loading system of rock fragmentation mechanisms under mine, it is characterised in that
Pressure cell is arranged in behind wiring hole bottom and needs to carry out grouting treatment, guarantees Rock Mass Integrality.
6. according to claim 1 for studying the experiment loading system of rock fragmentation mechanisms under mine, which is characterized in that
Deformeter is used as the signal receiving device of strain-type pressure cell and foil gauge simultaneously, and deformeter transmits a signal to data collecting instrument
Afterwards, work station is stored data in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822062618.7U CN209327139U (en) | 2018-12-10 | 2018-12-10 | For studying the experiment loading system of rock fragmentation mechanisms under mine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822062618.7U CN209327139U (en) | 2018-12-10 | 2018-12-10 | For studying the experiment loading system of rock fragmentation mechanisms under mine |
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| Publication Number | Publication Date |
|---|---|
| CN209327139U true CN209327139U (en) | 2019-08-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822062618.7U Expired - Fee Related CN209327139U (en) | 2018-12-10 | 2018-12-10 | For studying the experiment loading system of rock fragmentation mechanisms under mine |
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| Country | Link |
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| CN (1) | CN209327139U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109406307A (en) * | 2018-12-10 | 2019-03-01 | 中国矿业大学(北京) | For studying the experiment loading system and method for rock fragmentation mechanisms under mine |
| CN113866025A (en) * | 2021-09-27 | 2021-12-31 | 辽宁工程技术大学 | Method for testing dynamic strain in original rock |
-
2018
- 2018-12-10 CN CN201822062618.7U patent/CN209327139U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109406307A (en) * | 2018-12-10 | 2019-03-01 | 中国矿业大学(北京) | For studying the experiment loading system and method for rock fragmentation mechanisms under mine |
| CN113866025A (en) * | 2021-09-27 | 2021-12-31 | 辽宁工程技术大学 | Method for testing dynamic strain in original rock |
| CN113866025B (en) * | 2021-09-27 | 2024-02-23 | 辽宁工程技术大学 | Method for testing dynamic strain in original rock |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190830 Termination date: 20201210 |