CN105275495B - A kind of method for judging shock wave harmfulness - Google Patents
A kind of method for judging shock wave harmfulness Download PDFInfo
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- CN105275495B CN105275495B CN201510641495.0A CN201510641495A CN105275495B CN 105275495 B CN105275495 B CN 105275495B CN 201510641495 A CN201510641495 A CN 201510641495A CN 105275495 B CN105275495 B CN 105275495B
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- 230000035939 shock Effects 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000012360 testing method Methods 0.000 claims abstract description 33
- 230000006378 damage Effects 0.000 claims abstract description 24
- 238000005065 mining Methods 0.000 claims abstract description 15
- 238000005422 blasting Methods 0.000 claims abstract description 14
- 230000003116 impacting effect Effects 0.000 claims abstract description 7
- 238000004880 explosion Methods 0.000 claims abstract description 4
- 239000003245 coal Substances 0.000 claims description 17
- 239000002360 explosive Substances 0.000 claims description 10
- 238000005553 drilling Methods 0.000 claims description 9
- 239000011435 rock Substances 0.000 claims description 7
- 238000007664 blowing Methods 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 3
- 229940079593 drug Drugs 0.000 claims description 3
- 239000003814 drug Substances 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 230000034994 death Effects 0.000 abstract description 7
- 231100000517 death Toxicity 0.000 abstract description 7
- 230000002265 prevention Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/14—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring the force of explosions; for measuring the energy of projectiles
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a kind of method for judging shock wave harmfulness, it is preferred by choosing testing gallery in coalfield to be exploited, impulsive force and corresponding blasting energy two dimensional plot are obtained in testing gallery explosion bulge test, and mark roadway damage situation in the intersection point of two-dimensional coordinate, find the actual destruction situation in tunnel when shock wave casualty accident occurring in the past, the mark point with the actual destruction situation most close roadway damage situation is found on curve, it regard the mark point as press casualty accident critical point with impacting, the corresponding abscissa of the critical point represents critical impulse power, by the impulsive force of test zone compared with critical impulse power, so as to judge whether there is bump casualty accident.The present invention can predict certain region and press casualty accident with impacting under set mining environment, to take corresponding measure when exploitation is to the region, reach safety requirements of the control without injures and deaths.
Description
Technical field
The invention belongs to Coal Mining Technology field.
Background technology
Bump is one of natural calamity of most serious in colliery in world wide.It is tighter that China belongs to bump
The country of weight, is continuously increased, bump is increasingly severe, it has also become coal production in particular with China's coal-mine mining depth
One of with the main disaster of safety.Up to the present, the prevention and control of bump are also far from fundamentally solving its radical cure
Problem.China's coal-mine mine was built in for five sixties mostly, and passage and exploitation of mineral resources over time is shifted to deep, these
Mine will enter deep mining, and rock blast hazard problem will be more serious, more prominent, more universal.
In terms of Prediction of Rock Burst, because coal mining geology condition is changeable, do not realize what it was endangered theoretically also
Forecast work, substantially carrys out decision-making in the digging design of rock burst coal seam by statistics experience at present, thus frequently appears in
Mining work is carried out in the region of high stress, in isolated island and half gob-surrounded pillar, power source condition is provided for bump.Impact
The information acquiring technology that ground pressure mine is generally used, its test parameter is not reaction direct factor, is more indirect factor, institute
Can only carry out the qualitative monitoring of bump, quantitative extent do not reached also in the judgement to impacting geostatic pressure degree.Therefore, mesh
Preceding Controlling of Coal Outburst is that qualitatively, some preventing and treatings are conventional, and in bump abnormal area, these Prevention Techniques are difficult to reach
To the degree without injures and deaths.
Bump accident is usually that impact energy is larger, causes roadway damage serious and casualties, casualties
Reason includes two aspects：One is that exploitation space surrounding rock failure, motion and equipment (including prop etc.) movement cause casualties,
Two be that shock wave energy is big, causes personnel to impact injures and deaths, and impact injures and deaths pressed in big energy impact in tend to take up it is main
Weight.Therefore, under set mining environment, if it is very necessary to predict great bump and can impact and hurt sb.'s feelings
, it is the last line of defense for protecting safety of workers, by controlling impact energy, it is that most basic safety will without injures and deaths to reach control
Ask, by determining impact energy size under actual conditions, reach take precautions against this under the conditions of implement engineering casualties be impact danger
The essence of dangerous prevention and control.Under the conditions of specific coal petrography, which type of method of testing is taken, the critical value of impact energy is determined, it is ensured that
Do not cause personnel to impact injures and deaths, be very necessary, and there is presently no great especially for existing for such method of testing
The region of disaster is impacted, the critical value of its prevention and control is there is presently no the technical system of system, and current observation method and method are very
Hardly possible obtains quantitative value.As the case may be, invent a kind of method of quick determination impact critical value has turned into bump danger
The key of dangerous precognition.There is presently no the report of the live determination method on rock blast hazard critical value.
The content of the invention
The purpose of the present invention is to be directed to underground coal mine stope actual conditions, proposes that one kind can quickly test impact ground at the scene
The method for pressing critical energy value.
To reach above-mentioned purpose, the present invention is adopted the technical scheme that：
A kind of method for judging shock wave harmfulness, using following steps：
The first step, obtains critical impulse power contrast curve
1st, in underground coal mine treats the normal tunnelling of mining coal seam, one section of tunnel of selection is tested, first to the section
Testing gallery carries out supporting, it is ensured that the former design section in tunnel；
2nd, Blasting shock wave impulsive force observation system is arranged in the range of away from boring head 12-15m, the system includes punching
Hit sensor and air-shock wave tester；Wherein shock transducer is fixed on drift section centre bit by plane fixed mount
Put, the plane fixed mount surrounding can be fixed on roadway surrounding rock, center is provided with the installing plate for installing shock transducer；
3rd, drilled and blasted according to normal procedure, explosive is installed into blasthole, normal charge amount quality is installed for the first time
60wt%, after blowing out, the impulsive force that observational record air-shock wave tester is tested, and record roadway damage situation；Second
The secondary 80wt% for installing normal charge amount, after blowing out, the impulsive force that observational record shock wave tester is tested, and record tunnel
Destruction situation；By that analogy, proceed according to the explosive payload for being incremented by 20wt% every time, 200wt% is arrived until increasing；By test note
Two-dimensional coordinate figure is made with corresponding blasting energy in the impulsive force of record, and roadway damage situation, connection are marked in the intersection point of two-dimensional coordinate
Each intersection point obtains a curve on two-dimensional coordinate figure, and critical impulse power is found by the curve, and specific method is：
The corresponding relation of class shock wave accident size and the actual destruction situation in tunnel than ever, is found by corresponding relation
The actual destruction situation in tunnel when shock wave casualty accident occurring in the past, finds most close with the actual destruction situation on curve
Roadway damage situation mark point, regard the mark point as press casualty accident critical point with impacting, the critical point
Corresponding abscissa represents critical impulse power, and the curve map is critical impulse power contrast curve；
Second step, selection test zone
During this treats mining coal seam tunnelling, often tunnel 300m and stop driving as a test zone, to test
Region carries out supporting, keeps the former design section in tunnel, and the debris cleaned out in tunnel；Above-mentioned test zone is typically chosen
In return airway；
3rd step, blasting engineering design
Blast hole is arranged in the range of the 10m that met head on away from roadway construction, wherein arrangement 3 of meeting head on, the way of escape two helps each symmetrical cloth
Put 2, hole depth 10-12m or so, aperture 42mm, orifice distance bottom plate 1.3-1.5m, the every general 800-1000g in hole of explosive payload；Meet
In 3 holes of head arrangement, one of hole is arranged on laneway midline and section drilling of vertically meeting head on, and two holes are arranged in
The side portion of tunnel two and outwards oblique drilling；Drill the elevation angle 3-5 degree during drilling；
4th step, arrangement test system
With reference to the method for the first step, Blasting shock wave impulsive force observation system is arranged in the range of the 12-15m that met head on away from tunnel
System；
5th step, detonate to blasthole Zhong Installed medicines and disposably, pass through the test of air-shock wave tester after explosion to impact
Power, the impulsive force if it exceeds or reach the impulsive force of critical impulse power contrast curve upper critical point, illustrate the test zone
Heading driving when have bump casualty accident generation, otherwise do not have bump casualty accident generation.
The positive effect of the present invention is：Under set mining environment, certain region can be predicted and weigh people wounded with impacting
Accident, to take corresponding measure when exploitation is to the region, reaches safety requirements of the control without injures and deaths.
Brief description of the drawings
Fig. 1 is test zone floor map；
Fig. 2 is borehole floor map；
Fig. 3 is test system side schematic view；
Fig. 4 is blasting energy and impulsive force two-dimensional coordinate figure；
Fig. 5 is critical impulse power contrast curve.
Specific implementation method
Technical scheme is further illustrated below according to accompanying drawing.
A kind of method for judging shock wave harmfulness, using following steps：
The first step, obtains critical impulse power correlation curve Fig. 5
1st, in underground coal mine treats the normal tunnelling of mining coal seam, one section of tunnel of selection is tested, and the tunnel is entered
Row supporting, it is ensured that the former design section in tunnel；
2nd, Blasting shock wave impulsive force observation system is arranged in the range of away from boring head 12-15m, the system includes punching
Hit sensor and air-shock wave tester；Wherein shock transducer is fixed on drift section centre bit by plane fixed mount
Put；The plane fixed mount surrounding can be fixed on roadway surrounding rock, and center is provided with the installing plate for installing shock transducer, such as Fig. 3 institutes
Show；
3rd, drilled and blasted according to normal procedure, explosive be installed into blasthole, the 60wt% of normal charge amount is installed for the first time,
After blowing out, the impulsive force that observational record air-shock wave tester is tested, and record roadway damage situation；Second of installation
The 80wt% of normal charge amount, after blowing out, the impulsive force that observational record air-shock wave tester is tested, and record tunnel
Destruction situation；By that analogy, proceed according to the explosive payload for being incremented by 20wt% every time, 200wt% is arrived until increasing；By test note
Two-dimensional coordinate figure is made with corresponding blasting energy in the impulsive force of record, and roadway damage situation, connection are marked in the intersection point of two-dimensional coordinate
Each intersection point obtains a curve on two-dimensional coordinate figure, as shown in Figure 4；
The corresponding relation of class shock wave accident size and the actual destruction situation in tunnel than ever, is sought by corresponding relation again
The actual destruction situation in tunnel when shock wave casualty accident occurring in the past is looked for, is found on Fig. 4 curve map and the actual destruction
Situation most close roadway damage situation mark point, using the mark point as pressing the critical of casualty accident with impacting
Point, the corresponding abscissa of the critical point represents critical impulse power, and the figure is critical impulse power contrast curve, as shown in Figure 5；
Second step, selection test zone
During this treats mining coal seam tunnelling, often tunnel 300m and stop driving as a test zone, to test
Region carries out supporting, keeps the former design section in tunnel, and the debris cleaned out in tunnel；Above-mentioned test zone selection is in work
Make in the crossheading of face, as shown in Figure 1；
3rd step, blasting engineering design
Blast hole is arranged in the range of the 10m that met head on away from tunneling construction, wherein arrangement 3 of meeting head on, the way of escape two helps each symmetrical cloth
Put 2, hole depth 10-12m or so, aperture 42mm, orifice distance bottom plate 1.3-1.5m, the every general 800-1000g in hole of explosive payload；Meet
In 3 holes of head arrangement, one of hole is arranged on laneway midline and section drilling of vertically meeting head on, and two holes are arranged in
The side portion of tunnel two and outwards oblique drilling；Drill the elevation angle 3-5 degree during drilling；As shown in Figure 2；
4th step, arrangement test system
With reference to the method for the first step, Blasting shock wave impulsive force observation system is arranged in the range of away from boring head 12-15m
System, as shown in Figure 3；
5th step, detonate to blasthole Zhong Installed medicines and disposably, pass through the test of shock wave tester after explosion and arrive impulsive force
Parameter, the impulsive force if it exceeds or reach the impulsive force of critical impact energy contrast curve upper critical point, illustrate the test
The generation of bump casualty accident is had during the seam mining in region, the generation of bump casualty accident is not otherwise had.
Claims (1)
1. a kind of method for judging shock wave harmfulness, it is characterised in that use following steps：
The first step, obtains critical impulse power contrast curve
1st, in underground coal mine treats the normal tunnelling of mining coal seam, one section of tunnel of selection is tested, and the section is tested first
Tunnel carries out supporting, it is ensured that the former design section in tunnel；
2nd, Blasting shock wave impulsive force observation system is arranged in the range of away from boring head 12-15m, the system includes impact and passed
Sensor and air-shock wave tester；Wherein shock transducer is fixed on drift section center by plane fixed mount, should
Plane fixed mount surrounding can be fixed on roadway surrounding rock, and center is provided with the installing plate for installing shock transducer；
3rd, drilled and blasted according to normal procedure, explosive be installed into blasthole, the 60wt% of normal charge amount quality is installed for the first time,
After blowing out, the impulsive force that observational record air-shock wave tester is tested, and record roadway damage situation；Second of installation is just
The 80wt% of normal explosive payload, after blowing out, the impulsive force that observational record shock wave tester is tested, and record roadway damage feelings
Condition；By that analogy, proceed according to the explosive payload for being incremented by 20wt% every time, 200wt% is arrived until increasing；By rushing for test record
Hit power and two-dimensional coordinate figure is made with corresponding blasting energy, roadway damage situation is marked in the intersection point of two-dimensional coordinate, connect each friendship
Point obtains a curve on two-dimensional coordinate figure, and critical impulse power is found by the curve, and specific method is：
The corresponding relation of class shock wave accident size and the actual destruction situation in tunnel than ever, finds conventional by corresponding relation
Tunnel when occurring shock wave casualty accident is actual to destroy situation, is found on curve and the actual destruction situation most close lane
Road destroys the mark point of situation, regard the mark point as press casualty accident critical point with impacting, critical point correspondence
Abscissa represent critical impulse power, the curve map be critical impulse power contrast curve；
Second step, selection test zone
During this treats mining coal seam tunnelling, often tunnel 300m and stop driving as a test zone, to test zone
Supporting is carried out, the former design section in tunnel, and the debris cleaned out in tunnel is kept；Above-mentioned test zone selection is in working face
In crossheading；
3rd step, blasting engineering design
Blast hole is arranged in the range of the 10m that met head on away from roadway construction, wherein arrangement 3 of meeting head on, the way of escape two is helped respectively to be arranged symmetrically 2
It is individual, hole depth 10-12m, aperture 42mm, orifice distance bottom plate 1.3-1.5m, explosive payload is per hole 800-1000g；3 of arrangement of meeting head on
Kong Zhong, one of hole is arranged on laneway midline and section drilling of vertically meeting head on, and two holes are arranged in the side of tunnel two
Portion and outwards oblique drilling；Drill the elevation angle 3-5 degree during drilling；
4th step, arrangement test system
With reference to the method for the first step, Blasting shock wave impulsive force observation system is arranged in the range of the 12-15m that met head on away from tunnel；
5th step, detonate to blasthole Zhong Installed medicines and disposably, impulsive force is arrived by the test of air-shock wave tester after explosion, should
Impulsive force if it exceeds or reach the impulsive force of critical impulse power contrast curve upper critical point, illustrate the coal seam of the test zone
The generation of bump casualty accident is had during tunnelling, the generation of bump casualty accident is not otherwise had.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510641495.0A CN105275495B (en) | 2015-09-30 | 2015-09-30 | A kind of method for judging shock wave harmfulness |
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| CN201510641495.0A CN105275495B (en) | 2015-09-30 | 2015-09-30 | A kind of method for judging shock wave harmfulness |
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| CN105275495B true CN105275495B (en) | 2017-08-29 |
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| CN111174651B (en) * | 2020-01-09 | 2024-02-09 | 北京理工大学 | Testing system and testing method for dynamic explosion power field of explosion-killing grenade |
| CN112540400A (en) * | 2020-12-18 | 2021-03-23 | 山东科技大学 | Fracture zone dynamic pressure display strength and weakness degree judgment method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392685A (en) * | 2011-09-12 | 2012-03-28 | 山东科技大学 | Dense roadway group rock burst hazard prediction method |
| CN102587983A (en) * | 2012-01-12 | 2012-07-18 | 山东科技大学 | Comprehensive early-warning observation method for coal mine rock burst |
| CN102644482A (en) * | 2012-05-18 | 2012-08-22 | 河南大有能源股份有限公司 | Rock burst predicting and warning method |
| CN103344491A (en) * | 2013-06-27 | 2013-10-09 | 华北水利水电大学 | Method for simulating roadway rock burst based on coaction of static load and blast load |
| CN104074547A (en) * | 2014-06-25 | 2014-10-01 | 天地科技股份有限公司 | Coal mine mining roadway rock burst early warning method |
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- 2015-09-30 CN CN201510641495.0A patent/CN105275495B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392685A (en) * | 2011-09-12 | 2012-03-28 | 山东科技大学 | Dense roadway group rock burst hazard prediction method |
| CN102587983A (en) * | 2012-01-12 | 2012-07-18 | 山东科技大学 | Comprehensive early-warning observation method for coal mine rock burst |
| CN102644482A (en) * | 2012-05-18 | 2012-08-22 | 河南大有能源股份有限公司 | Rock burst predicting and warning method |
| CN103344491A (en) * | 2013-06-27 | 2013-10-09 | 华北水利水电大学 | Method for simulating roadway rock burst based on coaction of static load and blast load |
| CN104074547A (en) * | 2014-06-25 | 2014-10-01 | 天地科技股份有限公司 | Coal mine mining roadway rock burst early warning method |
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