CN110410151A - A kind of coal mine rock burst method for early warning, system and its component - Google Patents
A kind of coal mine rock burst method for early warning, system and its component Download PDFInfo
- Publication number
- CN110410151A CN110410151A CN201910774013.7A CN201910774013A CN110410151A CN 110410151 A CN110410151 A CN 110410151A CN 201910774013 A CN201910774013 A CN 201910774013A CN 110410151 A CN110410151 A CN 110410151A
- Authority
- CN
- China
- Prior art keywords
- stress
- rock
- early warning
- coal mine
- optical fibre
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000011435 rock Substances 0.000 title claims abstract description 223
- 239000003245 coal Substances 0.000 title claims abstract description 82
- 238000000034 method Methods 0.000 title claims abstract description 76
- 239000013307 optical fiber Substances 0.000 claims abstract description 75
- 238000012544 monitoring process Methods 0.000 claims abstract description 45
- 238000012360 testing method Methods 0.000 claims abstract description 43
- 238000003860 storage Methods 0.000 claims abstract description 24
- 238000004590 computer program Methods 0.000 claims description 11
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 238000012669 compression test Methods 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 7
- 238000004364 calculation method Methods 0.000 claims description 5
- 238000002474 experimental method Methods 0.000 claims description 5
- 238000004458 analytical method Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 8
- 238000005259 measurement Methods 0.000 description 12
- 239000000835 fiber Substances 0.000 description 11
- 239000000463 material Substances 0.000 description 10
- 238000005452 bending Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 9
- 230000008901 benefit Effects 0.000 description 5
- 238000005260 corrosion Methods 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 230000005670 electromagnetic radiation Effects 0.000 description 5
- 230000006870 function Effects 0.000 description 5
- 238000005553 drilling Methods 0.000 description 4
- 230000007774 longterm Effects 0.000 description 4
- 238000005065 mining Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 230000003628 erosive effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 238000009864 tensile test Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 239000000806 elastomer Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000005483 Hooke's law Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000004422 calculation algorithm Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012806 monitoring device Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000010415 tropism Effects 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The invention discloses a kind of coal mine rock burst method for early warning, method includes the following steps: carrying out stress relieving test to core using optical fibre grating three-dimensional strain gauge, and the elasticity modulus and Poisson's ratio of rock are obtained using core after completing stress relieving test；The stress of primary rock of roof strata is calculated using elasticity modulus and Poisson's ratio；Utilize the Disturbance stress of optical fibre grating three-dimensional strain gauge on-line monitoring roof strata；It is superimposed the stress of primary rock and Disturbance stress, obtains the true stress of roof strata；True stress is compared with rock triaxial strength, carries out grading forewarning system using comparison result.In the method, online true stress can be carried out to roof strata to monitor on-line, can also carry out grading forewarning system based on monitoring data, can ensure the personnel of underground work and the safety of instrument.The invention also discloses a kind of coal mine rock burst prior-warning device, system, equipment and readable storage medium storing program for executing, have corresponding technical effect.
Description
Technical field
The present invention relates to bump monitoring technical fields, more particularly to a kind of coal mine rock burst method for early warning, dress
It sets, system, equipment and readable storage medium storing program for executing.
Background technique
Rock blast hazard seriously threatens the safety in production of underground.In underground coal mine, according to bump strength theory,
Bump is rock coal body internal stress concentration as a result, when rock coal body internal stress reaches its intensity, is accumulated in
Energy inside rock coal body discharges suddenly causes rock blast hazard.But due to coal body more soft broken, it is not possible at present straight
Connect the triaxiality in measurement coal body.Therefore, accurate measurements face roof rock stratum triaxiality is having for predicting rock burst
Effect approach.
Currently, the method for bump monitoring and warning mainly includes micro-seismic method, electromagnetic radiation method, stress of coal seam method, drilling cuttings
Method etc..Micro-seismic method only can be carried out area based on the microwave signal emitted during rock masses fracturing in the actual production process at present
The early warning of domain property, early warning precision is lower when participating in the cintest.The principle of electromagnetic radiation method is that stress level and its amount of electromagnetic radiation exist in coal seam
Certain relationship, but scene, due to the electromagnetic radiation of large scale equipment, the requirement of bump early warning is also not achieved in precision.It adopts at present
Stress of coal seam method is only capable of stress increment in monitoring coal seam, can not obtain coal seam true three-dimension stress, therefore, early warning precision
It is relatively low.
In the recovery process in coal seam, since the roof strata at working face rear loses the supporting role in coal seam, rear
Terrane stress constantly to the front of working face rock-coal body transfer, leads to roof strata in front of working face, the stress water inside coal seam
It is flat to be continuously increased.When internal stress reaches rock-coal body system intensity, bump will occur.The triaxiality in rock stratum
Monitoring aspect carries out the test of the stress of primary rock with stress relief method currently, mostly using resistance-strain chip strain gauge.
But existing method can not carry out the long term monitoring of face roof rock stratum triaxiality, reason includes: one side, existing
For strain gauge using resin as main structure material, resin has stronger rheological characteristic under long-term stress effect；It is another
Aspect causes working face by strong electromagnetic since coal mine work area is there are numerous large scale equipments.Eventually lead to existing stress
Monitoring device and method cannot achieve the long-term accurate measurements of roof strata triaxiality.
And subsurface environment is increasingly complex relative to ground, once there is rock blast hazard, often will cause personnel can not
In time treatment and it is dead, biggish loss will also result in instrument.Therefore, rock blast hazard early warning etc. how is efficiently solved
Problem is current those skilled in the art technical problem urgently to be solved.
Summary of the invention
The object of the present invention is to provide a kind of coal mine rock burst method for early warning, device, system, equipment and readable storage mediums
Matter can carry out early warning to rock blast hazard, ensure personnel and the instrument safety of underground work.
In order to solve the above technical problems, the invention provides the following technical scheme:
A kind of coal mine rock burst method for early warning, comprising:
Stress relieving test is carried out to core using optical fibre grating three-dimensional strain gauge, and completes the stress relieving
The elasticity modulus and Poisson's ratio of rock are obtained after test using the core；
The stress of primary rock of roof strata is calculated using the elasticity modulus and the Poisson's ratio；
Monitor the Disturbance stress of the roof strata on-line using the optical fibre grating three-dimensional strain gauge；
It is superimposed the stress of primary rock and the Disturbance stress, obtains the true stress of the roof strata；
The true stress is compared with rock triaxial strength, carries out grading forewarning system using comparison result.
Preferably, the elasticity modulus and pool for obtaining rock using the core after completing the stress relieving test
Loose ratio, comprising:
The core is measured using twin shaft experimental rig, obtains the elasticity modulus and the Poisson's ratio.
Preferably, the elasticity modulus and pool for obtaining rock using the core after completing the stress relieving test
Loose ratio, comprising:
Compression experiment is carried out to the core, obtains the elasticity modulus and the Poisson's ratio.
Preferably, the process of the rock triaxial strength is obtained, comprising:
Using the optical fibre grating three-dimensional strain gauge to the indoor triaxial compression test of roof strata, obtains difference and enclose
The rock triaxial strength and Burst Tendency index under the conditions of pressure.
Preferably, described to be compared the true stress with rock triaxial strength, it is classified using comparison result
Early warning, comprising:
The true stress is determined to the target rock triaxial strength opposite with true stress level；
Compare the true stress and the target rock triaxial strength, obtains bump risk index；
The corresponding relationship of the risk index and the Burst Tendency index presses carry out classifying alarm to impact.
It is preferably, described to carry out grading forewarning system using comparison result, comprising:
Using double netcard computer in local area network and classifying alarm is carried out in internet.
A kind of coal mine rock burst prior-warning device, comprising:
Rock behavio(u)r obtains module, for carrying out stress relieving examination to core using optical fibre grating three-dimensional strain gauge
It tests, and obtains the elasticity modulus and Poisson's ratio of rock using the core after completing the stress relieving test；
The stress of primary rock obtains module, and the protolith for calculating roof strata using the elasticity modulus and the Poisson's ratio is answered
Power；
Disturbance stress obtains module, for monitoring the top plate rock on-line using the optical fibre grating three-dimensional strain gauge
The Disturbance stress of layer；
True stress obtains module and obtains the roof strata for being superimposed the stress of primary rock and the Disturbance stress
True stress；
Grading forewarning system module, for the true stress to be compared with rock triaxial strength, using comparison result into
Row grading forewarning system.
A kind of coal mine rock burst early warning system, comprising:
Optical fibre interrogation instrument, and the optical fibre grating three-dimensional strain gauge that is connected with the optical fibre interrogation instrument and have soft
The monitoring computer of part analysis system；
Wherein, the optical fibre grating three-dimensional strain gauge, for monitoring the triaxiality light data of rock；
Demodulation result for demodulating to the triaxiality light data, and is transferred to institute by the optical fibre interrogation instrument
State monitoring computer；
The software analysis system, for realizing such as above-mentioned coal mine rock burst method for early warning.
A kind of coal mine rock burst source of early warning, comprising:
Memory, for storing computer program；
Processor, the step of above-mentioned coal mine rock burst method for early warning is realized when for executing the computer program.
A kind of readable storage medium storing program for executing is stored with computer program, the computer program quilt on the readable storage medium storing program for executing
The step of processor realizes above-mentioned coal mine rock burst method for early warning when executing.
Using method provided by the embodiment of the present invention, stress is carried out to core using optical fibre grating three-dimensional strain gauge
Test is released, and obtains the elasticity modulus and Poisson's ratio of rock using core after completing stress relieving test；Utilize springform
Amount and Poisson's ratio calculate the stress of primary rock of roof strata；Utilize optical fibre grating three-dimensional strain gauge on-line monitoring roof strata
Disturbance stress；It is superimposed the stress of primary rock and Disturbance stress, obtains the true stress of roof strata；True stress and three axis of rock is strong
Degree is compared, and carries out grading forewarning system using comparison result.
If it is found that can accurate measurements roof strata three-dimensional during working face mining according to the genesis mechanism of bump
The variation of stress can press carry out early warning to impact.Based on this, in the method, using having electromagnetism interference, corrosion resistant
The optical fibre grating three-dimensional strain gauge of the advantages that erosion, explosion-proof performance carries out stress relieving test to core, then completes to answer
After power releases test, the elasticity modulus and Poisson's ratio of rock are obtained using the core, and calculate using elasticity modulus and Poisson's ratio
The stress of primary rock of roof strata out.Utilize the Disturbance stress of optical fibre grating three-dimensional strain gauge on-line monitoring roof strata.It is logical
It crosses the superposition stress of primary rock and Disturbance stress obtains the true stress of roof strata.Finally, by comparing true stress and rock three
Axis intensity can carry out grading forewarning system.As it can be seen that in the method, online true stress being carried out to roof strata and is carried out
On-line monitoring can also carry out grading forewarning system based on monitoring data, can ensure the personnel of underground work and the safety of instrument.
Correspondingly, the embodiment of the invention also provides coal mine impacts corresponding with above-mentioned coal mine rock burst method for early warning
Prior-warning device, system, equipment and readable storage medium storing program for executing are pressed in ground, have above-mentioned technique effect, details are not described herein.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of implementation flow chart of coal mine rock burst method for early warning in the embodiment of the present invention；
Fig. 2 is a kind of borehole circumference country rock three-dimensional Stress Distribution figure in the embodiment of the present invention；
Fig. 3 is a kind of structural schematic diagram of coal mine rock burst prior-warning device in the embodiment of the present invention；
Fig. 4 is a kind of structural schematic diagram of coal mine rock burst early warning system in the embodiment of the present invention；
Fig. 5 is the rock triaxial compressions curve synoptic diagram that confining pressure is 15.0MPa in the embodiment of the present invention；
Fig. 6 is a kind of structural schematic diagram of coal mine rock burst source of early warning in the embodiment of the present invention；
Fig. 7 is a kind of concrete structure schematic diagram of coal mine rock burst source of early warning in the embodiment of the present invention.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.Obviously, described embodiments are only a part of the embodiments of the present invention, rather than
Whole embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.
Embodiment one:
Referring to FIG. 1, Fig. 1 is a kind of flow chart of coal mine rock burst method for early warning in the embodiment of the present invention, this method
The following steps are included:
S101, stress relieving test is carried out to core using optical fibre grating three-dimensional strain gauge, and completes stress solution
Except the elasticity modulus and Poisson's ratio for utilizing core to obtain rock after test.
Optical fibre grating three-dimensional strain gauge, i.e., the sensor that measurement strains using fiber grating as sensitive material.Wherein,
Fiber grating is a kind of diffraction light for forming the refractive index generation axial cyclic modulation of fiber core by certain method
Grid, i.e., a kind of passive filtering device.Since grating fibers have, small in size, splice loss, splice attenuation is small, be compatible with optical fiber entirely, can be embedded to intelligence
The advantages that energy material, and the variation of its resonance wavelength strain is more sensitive, therefore makes fiber grating using fiber grating
Triaxiality sensor.Specifically, the concrete operating principle of optical fibre grating three-dimensional strain gauge, internal structure and application method
Deng the product description and related introduction that can refer to existing optical fibre grating three-dimensional strain gauge, no longer go to live in the household of one's in-laws on getting married one by one herein
It states.
Wherein, optical fibre grating three-dimensional strain gauge is Tubular Yarn structure, has electromagnetism interference, corrosion-resistant, explosion-proof
The features such as.In view of because under normal circumstances, when rock breakdown, tensile stress that sensor monitors is close to 20MPa；In working face
In progradation, the maximum value in the triaxiality of rock stratum is preferable in order to reach in order to monitor terrane stress close to 100MPa
Monitoring effect, preferential its monitor range maximum tension stress and are not less than 20MPa, and maximum crushing stress is not less than the fiber grating of 100MPa
Triaxiality sensor.
In embodiments of the present invention, it the quantity to optical fibre grating three-dimensional strain gauge and is not construed as limiting.In practical application
In, it can arrange one or more according to the actual situation.For example, when need to carry out bump early warning be only some specifically
Point then uses an optical fibre grating three-dimensional strain gauge；It include multiple places when needing to carry out bump early warning, then
More optical fibre grating three-dimensional strain gauges can be used.
In practical applications, setting optical fibre interrogation instrument is also needed to solve the light data of optical fibre grating three-dimensional strain gauge
It adjusts, obtains the identifiable electric signal of computer.Specifically, optical fibre interrogation instrument port number needs and optical fibre grating three-dimensional stress sensing
The number of device is corresponding.I.e. in practical applications, optical fibre interrogation instrument is needed to have sufficient amount of channel to connect optical fibre grating three-dimensional
Strain gauge, under normal circumstances, an optical fibre grating three-dimensional strain gauge need 2 channels, and 16 channels can connect 8
Sensor can satisfy the demand of practical application.After optical fibre interrogation instrument connects optical fibre grating three-dimensional strain gauge, one logical
Road at most needs to demodulate 6 wavelength, and under normal circumstances, adjacent wavelength minimum interval is 6nm, the wavelength model that 6 wavelength need
Range can be demodulated not less than 40nm to cope with the case where adjacent wavelength interval is greater than 6nm for 30nm by enclosing.Again because of bump
For a kind of dynamic disaster, high frequency is needed to monitor, so as to timely early warning, so maximum frequency acquisition is needed to be not less than 25Hz.
In embodiments of the present invention, the rock, the core that tested, monitor can be specially the top layer rock stratum of underground coal mine.When
So, coal mine rock burst method for early warning provided by the present invention can also be used in other mines or construct underground top layer rock stratum into
Row monitoring ensures the security of the lives and property of underground operators to press carry out early warning to impact.In embodiments of the present invention with
Be described in detail for underground coal mine, other subsurface environments into impact press carry out early warning can refer to and this.
Wherein, an external forces are applied to elastomer, the change (referred to as straining) of shape, elasticity can occur for elastomer
The general definition of modulus: under uniaxial stressed state stress divided by the direction strain.Material in elastic deformation stage, stress and
It strains direct proportionality (meeting Hooke's law), proportionality coefficient is known as elasticity modulus, the unit of elasticity modulus: Paasche
Card.Elasticity modulus is a physical quantity for describing elasticity of materials, for a general designation, representation method can specific Young's modulus,
Bulk modulus etc..Poisson's ratio is finger material when unidirectional tension or in compression, the absolute value of transverse normal strain and axial normal strain
Ratio is also Poisson ratio, for the elastic constant for reflecting material transversely deforming.
Wherein, the specific implementation process about stress relieving test can be found in common stress relieving test.It completes to answer
Power releases the elasticity modulus and Poisson's ratio for utilizing core to obtain rock after test.Specifically, obtaining the elasticity modulus and pool of rock
There are many modes of loose ratio, in practical applications can optional one.Below to wherein relatively conventional two ways acquisition modes
It is briefly described:
Mode one: obtaining the elasticity modulus and Poisson's ratio of rock using twin shaft experimental provision, that is, utilizes twin shaft experimental rig
Core is measured, elasticity modulus and Poisson's ratio are obtained.Wherein, the specific structure of twin shaft experimental provision and its application method
Data acquisition can refer to existing based on twin shaft experimental provision acquisition elasticity modulus and Poisson's ratio.
Mode two: obtaining the elasticity modulus and Poisson's ratio of rock by compression experiment, i.e., after completing stress relieving test
Compression experiment is carried out to core, obtains elasticity modulus and Poisson's ratio.Compression test is measurement material under the effect of axial static pressure
Mechanical property test, for one of the basic skills of mechanical property of materials test.
S102, the stress of primary rock that roof strata is calculated using elasticity modulus and Poisson's ratio.
After obtaining elasticity modulus and Poisson's ratio, the original of top layer rock can be calculated using triaxiality calculation formula
Rock stress
S103, the Disturbance stress of optical fibre grating three-dimensional strain gauge on-line monitoring roof strata is utilized.
Before Disturbance stress using optical fibre grating three-dimensional strain gauge on-line monitoring roof strata, also need optical fiber light
Grid triaxiality sensor is placed in rock body drilled, then utilizes the fiber grating pair stress of optical fibre grating three-dimensional strain gauge
Sensitive material on-line monitoring roof strata Disturbance stress (Δ σ1, Δ σ2, Δ σ3)。
S104, the superposition stress of primary rock and Disturbance stress, obtain the true stress of roof strata.
After obtaining Disturbance stress and the stress of primary rock, roof strata can be obtained by the superposition stress of primary rock and Disturbance stress
True stress (σ1, σ2, σ3)。
To be more fully understood convenient for those skilled in the art, how to be answered in embodiments of the present invention using optical fibre grating three-dimensional
Force snesor obtains the true stress of roof strata, combines above-mentioned steps S103 and S104 be illustrated below.
In one piece of infinitely great rock mass (such as rockmass in underground channel overhead, i.e. dependent small rockbody), construction one
Drilling, establishes rectangular coordinate system and cylindrical coordinate in borehole circumference, and the two z-axis is consistent, as shown in Fig. 2, Fig. 2 is that the present invention is implemented
A kind of borehole circumference country rock three-dimensional Stress Distribution figure in example.In cylindrical coordinates, the angle θ counts counterclockwise from x-axis and is positive.It is assumed that rock mass
For elastic homogenous body, when drill Three-dimensional Rock stress by infinite point when, borehole circumference surrouding rock stress distribution formula
Are as follows:
Wherein, σx, σy, σz, τxy, τyz, τzxFor the Three-dimensional Rock stress under rectangular coordinate system；σr, σθ, σz', τrθ, τθz, τzr
For the hole edge surrouding rock stress under cylindrical coordinate；A is boring radius.
By theory of elastic mechanics it is found that under cylindrical coordinates, stress, displacement and the relationship of strain are as follows:
Wherein, εr、εθ、εz' it is normal strain, γrθ、γθz、γzrFor shearing strain, u is radial displacement, and v is circumferentially displaced, w
For axial displacement, E is elasticity modulus, and μ is Poisson's ratio,
From formula (7) to formula (12) as can be seen that strain and hole edge surrouding rock stress from borehole wall are closed with function
System.And by formula (1) to formula (6) it can be found that Three-dimensional Rock stress can be acquired by hole edge surrouding rock stress.It therefore, can be with
By the strain at measurement hole wall, and then obtain Three-dimensional Rock stress.
By the wavelength data of optical fibre grating three-dimensional stress, the strain of borehole wall can be calculated, to acquire rock
Body true three-dimension stress.
S105, true stress is compared with rock triaxial strength, carries out grading forewarning system using comparison result.
In embodiments of the present invention, rock triaxial strength can be obtained in advanceImpact is pressed into realizing
Row safe early warning.
Wherein, the process of rock triaxial strength is obtained, comprising: using optical fibre grating three-dimensional strain gauge to roof strata
Indoor triaxial compression test obtains rock triaxial strength and Burst Tendency index under the conditions of different confining pressures.Wherein, three axis
Compression test is that can be tested with triaxial shear equipment (also known as triaxial apparatus) with confined compression and shear test.Wherein,
The core of triaxial shear equipment is triaxial cell, and surveys equipped with axis pressure system, side pressure system and pore water pressure and read system
System etc..The rock sample of test can be to be cylindrical, and height be with diameter ratioAround given triaxial cell
Under pressure effect, axial additonal pressure is continued to increase, until sample is broken and calculates the method broken on face by Mohr's theory of failure
To stress and limiting shearing stress.
Specifically, true stress is compared with rock triaxial strength, grading forewarning system, packet are carried out using comparison result
It includes:
Step 1: true stress to be determined to the target rock triaxial strength opposite with true stress level；
Step 2: comparing true stress and target rock triaxial strength, bump risk index is obtained；
Step 3: the corresponding relationship of risk index and Burst Tendency index, presses carry out classifying alarm to impact.
It is illustrated for ease of description, below combining above three step.
Both true stress and target rock triaxial strength are compared, bump risk index is obtained,Then, according to the risk index F and Burst Tendency index I of rock, carry out grading forewarning system is pressed to impact.
That is, Burst Tendency index I is qualitative index, for qualitatively judging whether rock has bump-prone property, if impact is inclined
Tropism index I indicates Burst Tendency, then bump risk index F is recycled to carry out grading forewarning system；If burst trend
Property index I indicate soft coal layer, then it represents that, no longer progress bump early warning dangerous without bump.
The grade of bump grading forewarning system can be determined by following formula:
Wherein, σ1For maximum principal stress,For rock triaxial strength.Specifically, rock triaxiality can use principal stress table
Show, share 9 components, be respectively as follows: maximum principal stress, maximum principal stress azimuth, maximum principal stress inclination angle, intermediate principal stress,
Intermediate principal stress azimuth, intermediate principal stress inclination angle, minimum principal stress, minimum principal stress azimuth, minimum principal stress inclination angle.Three
In a principal stress, maximum numerical value is maximum principal stress, and the smallest numerical value is minimum principal stress, and remaining one is answered for intermediate master
Power.
Certainly, in practical applications, also boundary value can be adjusted according to field condition.
Preferably, in order to enable relevant person in charge can learn in respective local area network and quickly underground in internet
Early warning situation is carrying out grading forewarning system using comparison result, can be specially in local area network and to be interconnected using double netcard computer
Classifying alarm is carried out in net.
Using method provided by the embodiment of the present invention, stress is carried out to core using optical fibre grating three-dimensional strain gauge
Test is released, and obtains the elasticity modulus and Poisson's ratio of rock using core after completing stress relieving test；Utilize springform
Amount and Poisson's ratio calculate the stress of primary rock of roof strata；Utilize optical fibre grating three-dimensional strain gauge on-line monitoring roof strata
Disturbance stress；It is superimposed the stress of primary rock and Disturbance stress, obtains the true stress of roof strata；True stress and three axis of rock is strong
Degree is compared, and carries out grading forewarning system using comparison result.
If it is found that can accurate measurements roof strata three-dimensional during working face mining according to the genesis mechanism of bump
The variation of stress can press carry out early warning to impact.Based on this, in the method, using having electromagnetism interference, corrosion resistant
The optical fibre grating three-dimensional strain gauge of the advantages that erosion, explosion-proof performance carries out stress relieving test to core, then completes to answer
After power releases test, the elasticity modulus and Poisson's ratio of rock are obtained using the core, and calculate using elasticity modulus and Poisson's ratio
The stress of primary rock of roof strata out.Utilize the Disturbance stress of optical fibre grating three-dimensional strain gauge on-line monitoring roof strata.It is logical
It crosses the superposition stress of primary rock and Disturbance stress obtains the true stress of roof strata.Finally, by comparing true stress and rock three
Axis intensity can carry out grading forewarning system.As it can be seen that in the method, online true stress being carried out to roof strata and is carried out
On-line monitoring can also carry out grading forewarning system based on monitoring data, can ensure the personnel of underground work and the safety of instrument.
Embodiment two:
Corresponding to above method embodiment, the embodiment of the invention also provides a kind of coal mine rock burst prior-warning device,
Coal mine rock burst prior-warning device described below can correspond to each other reference with above-described coal mine rock burst method for early warning.
Shown in Figure 3, which comprises the following modules:
Rock behavio(u)r obtains module 101, for carrying out stress relieving to core using optical fibre grating three-dimensional strain gauge
Test, and the elasticity modulus and Poisson's ratio of core acquisition rock are utilized after completing stress relieving test；
The stress of primary rock obtains module 102, for calculating the stress of primary rock of roof strata using elasticity modulus and Poisson's ratio；
Disturbance stress obtains module 103, for utilizing optical fibre grating three-dimensional strain gauge on-line monitoring roof strata
Disturbance stress；
True stress obtains module 104, for being superimposed the stress of primary rock and Disturbance stress, obtains really answering for roof strata
Power；
Grading forewarning system module 105 is carried out for being compared true stress with rock triaxial strength using comparison result
Grading forewarning system.
Using device provided by the embodiment of the present invention, stress is carried out to core using optical fibre grating three-dimensional strain gauge
Test is released, and obtains the elasticity modulus and Poisson's ratio of rock using core after completing stress relieving test；Utilize springform
Amount and Poisson's ratio calculate the stress of primary rock of roof strata；Utilize optical fibre grating three-dimensional strain gauge on-line monitoring roof strata
Disturbance stress；It is superimposed the stress of primary rock and Disturbance stress, obtains the true stress of roof strata；True stress and three axis of rock is strong
Degree is compared, and carries out grading forewarning system using comparison result.
If it is found that can accurate measurements roof strata three-dimensional during working face mining according to the genesis mechanism of bump
The variation of stress can press carry out early warning to impact.Based on this, in the present apparatus, using having electromagnetism interference, corrosion resistant
The optical fibre grating three-dimensional strain gauge of the advantages that erosion, explosion-proof performance carries out stress relieving test to core, then completes to answer
After power releases test, the elasticity modulus and Poisson's ratio of rock are obtained using the core, and calculate using elasticity modulus and Poisson's ratio
The stress of primary rock of roof strata out.Utilize the Disturbance stress of optical fibre grating three-dimensional strain gauge on-line monitoring roof strata.It is logical
It crosses the superposition stress of primary rock and Disturbance stress obtains the true stress of roof strata.Finally, by comparing true stress and rock three
Axis intensity can carry out grading forewarning system.As it can be seen that can carry out online true stress to roof strata in the present apparatus and carry out
On-line monitoring can also carry out grading forewarning system based on monitoring data, can ensure the personnel of underground work and the safety of instrument.
In a kind of specific embodiment of the invention, rock behavio(u)r obtains module 101, is specifically used for testing using twin shaft
Device measures core, obtains elasticity modulus and Poisson's ratio.
In a kind of specific embodiment of the invention, rock behavio(u)r obtains module 101, specifically for pressing core
Contracting experiment, obtains elasticity modulus and Poisson's ratio.
In a kind of specific embodiment of the invention, further includes:
Rock triaxial strength obtains module, for utilizing optical fibre grating three-dimensional strain gauge indoor to roof strata three
Axis compression test obtains rock triaxial strength and Burst Tendency index under the conditions of different confining pressures.
In a kind of specific embodiment of the invention, grading forewarning system module 105, be specifically used for by true stress determine with
The opposite target rock triaxial strength of true stress level；Compare true stress and target rock triaxial strength, obtains impact ground
Press risk index；The corresponding relationship of risk index and Burst Tendency index presses carry out classifying alarm to impact.
In a kind of specific embodiment of the invention, grading forewarning system module 105 is specifically used for utilizing double netcard computer
In local area network and classifying alarm is carried out in internet.
Embodiment three:
Corresponding to above method embodiment, the embodiment of the invention also provides a kind of coal mine rock burst early warning system,
Coal mine rock burst early warning system described below can correspond to each other reference with above-described coal mine rock burst method for early warning.
Referring to FIG. 4, Fig. 4 is a kind of structural schematic diagram of coal mine rock burst early warning system in the embodiment of the present invention.It should
System includes: optical fibre grating three-dimensional strain gauge 1, optical fibre interrogation instrument 2, monitors computer 3, software analysis system 4, optical cable 5,
High-speed local area network 6, connection internet 7.
Wherein, optical fibre interrogation instrument, and the optical fibre grating three-dimensional strain gauge that is connected with optical fibre interrogation instrument and have
The monitoring computer of software analysis system；Wherein, optical fibre grating three-dimensional strain gauge, for monitoring the triaxiality light of rock
Data；Demodulation result for demodulating to triaxiality light data, and is transferred to monitoring computer by optical fibre interrogation instrument；It is soft
Part analysis system, for realizing the coal mine rock burst method for early warning as provided by above method embodiment.
To more fully understand coal mine rock burst early warning system provided by the embodiment of the present invention convenient for those skilled in the art
How system specifically realizes coal mine rock burst method for early warning provided by above-described embodiment, below by taking specific application scenarios as an example
It is described in detail.
It is about 1500m in coal working face to be monitored, wide 250m is laid out according to periodic weighting, and entire working face, which proposes, sets 8
A monitoring section face, each monitoring section face interval 150m.Optical fibre grating three-dimensional strain gauge is selected, according to its range of calibration result
For [- 30MPa, 150MPa], meet volume range request.Main structure is high-strength and high ductility resin and stainless steel, and uses grating sensing,
Have electromagnetism interference, corrosion-resistant, explosion-proof performance.32 channel fiber (FBG) demodulator of intrinsic safety type is selected, demodulation range of wavelengths is
[1528nm-1588nm], total 60nm, highest frequency acquisition are 25Hz, can meet data acquisition request.Sensor and optical fibre interrogation
It is connected between instrument using 24 core single mode fire-retardant cables 5, live melt process can be used in tie point.Optical fibre interrogation instrument and monitoring room calculate
Machine is carried out data transmission using high-speed local area network 6.Preferably, computer is communicated using double netcard, and one end connects local area network, is realized
The transmission of monitoring data；The other end connects internet 7, realizes the control of long-range association and early warning of system.
Software analysis system is mounted on monitoring computer, and software analysis system may particularly include database module, stress
Computing module, data disaply moudle, warning module, to realize the storage of data, calculate analysis, curve displaying, data export, rock
The functions such as stone and early-warning parameters configuration, early warning.
A kind of coal mine stope surrouding rock stress monitoring system (with bump early warning system) and bump method for early warning, i.e.,
Specifically applying for coal mine rock burst method for early warning is realized in the coal mine rock burst early warning system provided by the embodiment of the present invention
Work process includes:
Step 1: using geological core driller, from working face track crossheading to be measured to roof strata construction drill, drilling is straight
Diameter is the big drilling of 130mm, long 15m；Then in the aperture that macropore bottom construction diameter is 38mm, length is 40cm or so.Clearly
Optical fibre grating three-dimensional strain gauge is installed after washing aperture；After sensor and small hole wall bond well completely, stress relieving is carried out
Test；The core released is placed on twin shaft experimental rig, measurement obtain the elasticity modulus (E=15.0GPa) of rock with
Poisson's ratio (v=0.2)；Then the stress of primary rock of roof strata is calculated with triaxiality calculation formula, as shown in table 1.
Table 1-In-situ rock stress measurement result
Wherein, azimuth North gets being positive clockwise；Inclination angle is positive upwardly from level.
Step 2: roof strata is appointed under the influence of adopting (coal mining activity) using rock stratum triaxiality monitoring system on-line monitoring
The Disturbance stress at meaning moment；The stress of primary rock is added with Disturbance stress by the stress calculation module of software analysis system, is obtained
The three-dimensional true stress of roof strata any time, such as the three-dimensional true stress that certain moment is calculated is (σ1,σ2,σ3)=
(54.7MPa,18.6MPa,14.3MPa)。
Step 3: the compression of rock being carried out using rigid press and Indirect Tensile Tests, the bending energy for obtaining rock refer to
Number is 21.3, judges that rock has weak impact.
Wherein, what the data that bending energy index acquires not according to optical fibre grating three-dimensional strain gauge were calculated,
It is to be obtained according to compression test of rock and Indirect Tensile Tests.
Bending energy index can be acquired according to related specifications, and calculating process is as follows:
By compression test of rock, elastic modulus of rock E is obtained；By Indirect Tensile Tests for Rock, rock tension is obtained
Intensity Rt.
Single top plate bending energy index UWQAre as follows:Wherein, UWQFor single top plate bending energy
Index；RtFor rock sample compression strength；H is single top plate thickness；E is the elasticity modulus of rock sample.
Compound roof bending energy index UWQSCalculation formula is expressed as follows:
Wherein, UWQSFor compound roof bending energy index；UWQiFor i-th layer of bending energy index；N is
Top plate hierarchy number, compound roof thickness generally take to coal seam upper plate 30m.
Step 4: carry out the balkstone laboratory triaxial compression test of system, available rock triaxial strength and confining pressure
Test data.Indicate that confining pressure, y-axis indicate rock triaxial strength with x-axis, rock triaxial strength can be obtained with country rock in drawing image
The functional relation of rock triaxial strength and confining pressure can be obtained by the curve for the curve of variation, using the relationship, can be obtained not
With the rock triaxial strength under confining pressure level.Referring to FIG. 5, Fig. 5 is the rock three that confining pressure is 15.0MPa in the embodiment of the present invention
Axis compression curve schematic diagram, that is, by triaxial compression test, obtain the triaxial strength of rock under different confining pressure levels, establish three
The relationship of axis intensity and confining pressure.For the three axis true stress (σ at a certain moment1,σ2,σ3)=(54.7MPa, 18.6MPa,
14.3MPa), the relationship of the triaxial strength and confining pressure that are obtained by above-mentioned test searches and obtains rock when confining pressure is 15.0MPa
Intensity is about 74.0MPa.
Step 5: by the maximum principal stress monitored compared with the underwater intensity of the rock confining pressure carries out, bump is dangerous
Sex indexAccording to risk index F and the bending energy index 21.3 of rock, punching is determined
Pressing grade with hitting is medium impact.Wherein, bump risk index F such as formula 13.
Step 6: the triggering of software analysis system warning module, computer terminal stress histogram turn yellow and pop up early warning window
Mouthful；System sends warning information to cell phone application end by Internet, while related be responsible for is sent in the form of means short message
People.
Compared with prior art, method and system provided by the embodiment of the present invention has the advantage that
1, the measurement that triaxiality is carried out using fiber grating sensing technology and optical fibre interrogation instrument, due to underground large scale equipment
The frequency of generated electromagnetic radiation is more much lower than light wave, so the optical signal transmitted in a fiber is not by the shadow of electromagnetic interference
It rings, effectively increases the monitoring accuracy of country rock triaxiality.
2, the long term monitoring that surrouding rock stress under strong electromagnetic, burn into explosion-proof environment can be achieved, can grasp in time stope and enclose
Bump early warning accuracy rate can be improved in the situation of change of rock stress, it is ensured that downhole safety production.
Example IV:
Corresponding to above method embodiment, the embodiment of the invention also provides a kind of coal mine rock burst source of early warning,
A kind of coal mine rock burst source of early warning described below can be mutual with a kind of above-described coal mine rock burst method for early warning
To should refer to.
Shown in Figure 6, which includes:
Memory D1, for storing computer program；
Processor D2 realizes the coal mine rock burst method for early warning of above method embodiment when for executing computer program
The step of.
Specifically, referring to FIG. 7, Fig. 7 is a kind of specific knot of coal mine rock burst source of early warning provided in this embodiment
Structure schematic diagram, the coal mine rock burst source of early warning can generate bigger difference because configuration or performance are different, may include
One or more processors (central processing units, CPU) 322 are (for example, one or more are handled
Device) and memory 332, one or more storage application programs 342 or data 344 storage medium 330 (such as one or
More than one mass memory unit).Wherein, memory 332 and storage medium 330 can be of short duration storage or persistent storage.It deposits
Storage may include one or more modules (diagram does not mark) in the program of storage medium 330, and each module may include
To the series of instructions operation in data processing equipment.Further, central processing unit 322 can be set to and storage medium
330 communications execute the series of instructions operation in storage medium 330 on coal mine rock burst source of early warning 301.
Coal mine rock burst source of early warning 301 can also include one or more power supplys 326, one or more
Wired or wireless network interface 350, one or more input/output interfaces 358, and/or, one or more operations
System 341.For example, Windows ServerTM, Mac OS XTM, UnixTM, LinuxTM, FreeBSDTM etc..
Step in coal mine rock burst method for early warning as described above can be by coal mine rock burst source of early warning
Structure is realized.
Embodiment five:
Corresponding to above method embodiment, the embodiment of the invention also provides a kind of readable storage medium storing program for executing, are described below
A kind of readable storage medium storing program for executing can correspond to each other reference with a kind of above-described coal mine rock burst method for early warning.
A kind of readable storage medium storing program for executing is stored with computer program on readable storage medium storing program for executing, and computer program is held by processor
The step of coal mine rock burst method for early warning of above method embodiment is realized when row.
The readable storage medium storing program for executing be specifically as follows USB flash disk, mobile hard disk, read-only memory (Read-Only Memory,
ROM), the various program storage generations such as random access memory (Random Access Memory, RAM), magnetic or disk
The readable storage medium storing program for executing of code.
Professional further appreciates that, unit described in conjunction with the examples disclosed in the embodiments of the present disclosure
And algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software generally describes each exemplary composition and step according to function in the above description.These
Function is implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Profession
Technical staff can use different methods to achieve the described function each specific application, but this realization is not answered
Think beyond the scope of this invention.
Claims (10)
1. a kind of coal mine rock burst method for early warning characterized by comprising
Stress relieving test is carried out to core using optical fibre grating three-dimensional strain gauge, and completes the stress relieving test
The elasticity modulus and Poisson's ratio of rock are obtained using the core afterwards；
The stress of primary rock of roof strata is calculated using the elasticity modulus and the Poisson's ratio；
Monitor the Disturbance stress of the roof strata on-line using the optical fibre grating three-dimensional strain gauge；
It is superimposed the stress of primary rock and the Disturbance stress, obtains the true stress of the roof strata；
The true stress is compared with rock triaxial strength, carries out grading forewarning system using comparison result.
2. coal mine rock burst method for early warning according to claim 1, which is characterized in that described to complete the stress solution
Except the elasticity modulus and Poisson's ratio for utilizing the core to obtain rock after test, comprising:
The core is measured using twin shaft experimental rig, obtains the elasticity modulus and the Poisson's ratio.
3. coal mine rock burst method for early warning according to claim 1, which is characterized in that described to complete the stress solution
Except the elasticity modulus and Poisson's ratio for utilizing the core to obtain rock after test, comprising:
Compression experiment is carried out to the core, obtains the elasticity modulus and the Poisson's ratio.
4. coal mine rock burst method for early warning according to claim 1, which is characterized in that obtain the rock triaxial strength
Process, comprising:
Using the optical fibre grating three-dimensional strain gauge to the indoor triaxial compression test of roof strata, different confining pressure items are obtained
The rock triaxial strength and Burst Tendency index under part.
5. coal mine rock burst method for early warning according to claim 4, which is characterized in that it is described by the true stress with
Rock triaxial strength is compared, and carries out grading forewarning system using comparison result, comprising:
The true stress is determined to the target rock triaxial strength opposite with true stress level；
Compare the true stress and the target rock triaxial strength, obtains bump risk index；
The corresponding relationship of the risk index and the Burst Tendency index presses carry out classifying alarm to impact.
6. coal mine rock burst method for early warning according to any one of claims 1 to 5, which is characterized in that it is described using than
Relatively result carries out grading forewarning system, comprising:
Using double netcard computer in local area network and classifying alarm is carried out in internet.
7. a kind of coal mine rock burst prior-warning device characterized by comprising
Rock behavio(u)r obtains module, for carrying out stress relieving test to core using optical fibre grating three-dimensional strain gauge, and
The elasticity modulus and Poisson's ratio of rock are obtained using the core after completing the stress relieving test；
The stress of primary rock obtains module, for calculating the stress of primary rock of roof strata using the elasticity modulus and the Poisson's ratio；
Disturbance stress obtains module, for monitoring the roof strata on-line using the optical fibre grating three-dimensional strain gauge
Disturbance stress；
True stress obtains module and obtains the true of the roof strata for being superimposed the stress of primary rock and the Disturbance stress
Real stress；
Grading forewarning system module is divided for being compared the true stress with rock triaxial strength using comparison result
Grade early warning.
8. a kind of coal mine rock burst early warning system characterized by comprising
Optical fibre interrogation instrument, and the optical fibre grating three-dimensional strain gauge that is connected with the optical fibre interrogation instrument and with software point
The monitoring computer of analysis system；
Wherein, the optical fibre grating three-dimensional strain gauge, for monitoring the triaxiality light data of rock；
Demodulation result for demodulating to the triaxiality light data, and is transferred to the prison by the optical fibre interrogation instrument
Control computer；
The software analysis system, for realizing coal mine rock burst method for early warning such as claimed in any one of claims 1 to 6.
9. a kind of coal mine rock burst source of early warning characterized by comprising
Memory, for storing computer program；
Processor realizes that the coal mine rock burst as described in any one of claim 1 to 6 is pre- when for executing the computer program
The step of alarm method.
10. a kind of readable storage medium storing program for executing, which is characterized in that be stored with computer program, the meter on the readable storage medium storing program for executing
It is realized when calculation machine program is executed by processor as described in any one of claim 1 to 6 the step of coal mine rock burst method for early warning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910774013.7A CN110410151B (en) | 2019-08-21 | 2019-08-21 | Coal mine rock burst early warning method, system and assembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910774013.7A CN110410151B (en) | 2019-08-21 | 2019-08-21 | Coal mine rock burst early warning method, system and assembly thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110410151A true CN110410151A (en) | 2019-11-05 |
| CN110410151B CN110410151B (en) | 2021-03-26 |
Family
ID=68368288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910774013.7A Active CN110410151B (en) | 2019-08-21 | 2019-08-21 | Coal mine rock burst early warning method, system and assembly thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110410151B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111366461A (en) * | 2020-04-13 | 2020-07-03 | 鲁东大学 | Method for testing tensile strength of rock |
| CN112198051A (en) * | 2020-09-29 | 2021-01-08 | 河北工业大学 | Rock tensile fracture identification method based on energy evolution under side pressure effect and application |
| CN113686471A (en) * | 2021-09-13 | 2021-11-23 | 中国科学院武汉岩土力学研究所 | Roof fracture type rock burst grading early warning method |
| CN113756871A (en) * | 2021-09-13 | 2021-12-07 | 中国科学院武汉岩土力学研究所 | Real-time early warning method and system for hard roof type rock burst |
| CN113818927A (en) * | 2021-10-14 | 2021-12-21 | 山东省煤田地质规划勘察研究院 | Rock burst prevention and control device with energy guide function |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4122294C1 (en) * | 1991-07-05 | 1992-09-17 | Bergwerksverband Gmbh, 4300 Essen, De | Evaluating test drill results in coal seams - uses different types of coal as base for evaluation |
| CN102628373A (en) * | 2012-04-27 | 2012-08-08 | 天地科技股份有限公司 | Impact ground pressure split source comprehensive early-warning method of coal mine |
| CN104653226A (en) * | 2014-12-26 | 2015-05-27 | 中国矿业大学 | Stress-gradient-based method for dividing coal impact ground pressure danger area |
| CN107529615A (en) * | 2017-06-27 | 2018-01-02 | 兖州煤业股份有限公司 | A kind of three-dimensional turbulence stress test method of face surrounding rock |
| CN207395935U (en) * | 2017-08-04 | 2018-05-22 | 西安迅航光电科技有限公司 | A kind of bump on-line monitoring system based on fiber grating sensing technology |
| CN108170959A (en) * | 2017-12-28 | 2018-06-15 | 天地科技股份有限公司 | Mechanical response of the rock mass numerical analysis method and device based on discrete element |
| CN109253928A (en) * | 2018-10-22 | 2019-01-22 | 山东科技大学 | A kind of bump starting energy threshold determines method and Prediction of Rock Burst method |
| CN109538297A (en) * | 2018-10-25 | 2019-03-29 | 大同煤矿集团有限责任公司 | A kind of Seam Mining stress one monitoring device |
-
2019
- 2019-08-21 CN CN201910774013.7A patent/CN110410151B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4122294C1 (en) * | 1991-07-05 | 1992-09-17 | Bergwerksverband Gmbh, 4300 Essen, De | Evaluating test drill results in coal seams - uses different types of coal as base for evaluation |
| CN102628373A (en) * | 2012-04-27 | 2012-08-08 | 天地科技股份有限公司 | Impact ground pressure split source comprehensive early-warning method of coal mine |
| CN104653226A (en) * | 2014-12-26 | 2015-05-27 | 中国矿业大学 | Stress-gradient-based method for dividing coal impact ground pressure danger area |
| CN107529615A (en) * | 2017-06-27 | 2018-01-02 | 兖州煤业股份有限公司 | A kind of three-dimensional turbulence stress test method of face surrounding rock |
| CN207395935U (en) * | 2017-08-04 | 2018-05-22 | 西安迅航光电科技有限公司 | A kind of bump on-line monitoring system based on fiber grating sensing technology |
| CN108170959A (en) * | 2017-12-28 | 2018-06-15 | 天地科技股份有限公司 | Mechanical response of the rock mass numerical analysis method and device based on discrete element |
| CN109253928A (en) * | 2018-10-22 | 2019-01-22 | 山东科技大学 | A kind of bump starting energy threshold determines method and Prediction of Rock Burst method |
| CN109538297A (en) * | 2018-10-25 | 2019-03-29 | 大同煤矿集团有限责任公司 | A kind of Seam Mining stress one monitoring device |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111366461A (en) * | 2020-04-13 | 2020-07-03 | 鲁东大学 | Method for testing tensile strength of rock |
| CN111366461B (en) * | 2020-04-13 | 2023-02-03 | 鲁东大学 | Method for testing tensile strength of rock |
| CN112198051A (en) * | 2020-09-29 | 2021-01-08 | 河北工业大学 | Rock tensile fracture identification method based on energy evolution under side pressure effect and application |
| CN112198051B (en) * | 2020-09-29 | 2022-10-04 | 河北工业大学 | Rock tensile fracture identification method based on energy evolution under lateral pressure effect and application |
| CN113686471A (en) * | 2021-09-13 | 2021-11-23 | 中国科学院武汉岩土力学研究所 | Roof fracture type rock burst grading early warning method |
| CN113756871A (en) * | 2021-09-13 | 2021-12-07 | 中国科学院武汉岩土力学研究所 | Real-time early warning method and system for hard roof type rock burst |
| CN113818927A (en) * | 2021-10-14 | 2021-12-21 | 山东省煤田地质规划勘察研究院 | Rock burst prevention and control device with energy guide function |
| CN113818927B (en) * | 2021-10-14 | 2024-03-15 | 山东省煤田地质规划勘察研究院 | Rock burst control device with energy guiding function |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110410151B (en) | 2021-03-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110410151A (en) | A kind of coal mine rock burst method for early warning, system and its component | |
| US11326449B2 (en) | Method for determining three-dimensional in-situ stress based on displacement measurement of borehole wall | |
| CN110486007B (en) | In-situ testing device and method for mechanical parameters of coal mine surrounding rock while drilling | |
| Hatzor et al. | Scaling rockburst hazard using the DDA and GSI methods | |
| US11821805B1 (en) | Hard-shell inclusion strain gauge and high frequency real-time monitoring system for 3D stress in surrounding rockmass of underground engineering | |
| CN109975119A (en) | A kind of rock Biaxial Compression blasting design method | |
| CN104390733A (en) | Determination method for magnitude and direction of crustal stress | |
| Cheng et al. | A field study on distributed fiber optic deformation monitoring of overlying strata during coal mining | |
| CN106996841B (en) | Drilling type optical fiber three-dimensional ground stress observation device with self-consistent function | |
| CN107356356A (en) | The fiber grating surrouding rock stress monitoring device and monitoring system of a kind of high-survival rate | |
| Haustveit et al. | Empirical Meets Analytical-Novel Case Study Quantifies Fracture Stress Shadowing and Net Pressure Using Bottom Hole Pressure and Optical Fiber | |
| Xu et al. | Simulation study of fiber optic monitoring technology of surrounding rock deformation under deep mining conditions | |
| Fuławka et al. | Monitoring of the stability of underground workings in Polish copper mines conditions | |
| Tang et al. | Application of a FBG‐Based Instrumented Rock Bolt in a TBM‐Excavated Coal Mine Roadway | |
| Ma et al. | Precursor of microseismic energy and stress evolution induced by rockburst in coal mining: a case study from Xiashijie, Shannxi, China | |
| Zheng et al. | A new method for monitoring coal stress while drilling process: theoretical and experimental study | |
| Ma et al. | Microseismic monitoring, analysis and early warning of rockburst | |
| Deng et al. | Integrated monitoring of lithology parameters while drilling in small-scale coring platform | |
| Lorenz et al. | Measurement and analysis of fractures in core | |
| Wu et al. | Application of a type of strain block FBG sensor for strain measurements of squeezing rock in a deep-buried tunnel | |
| Xie et al. | Quantitative evaluation of shale brittleness based on brittle-sensitive index and energy evolution-based fuzzy analytic hierarchy process | |
| Morozov | Creation of rock mass monitoring deformations systems on rock burst hazardous mineral deposits | |
| Lu et al. | Numerical simulation on energy concentration and release process of strain rockburst | |
| Xu et al. | Research on the relationship between coal burst tendency and rockburst risk of coal seam | |
| CN113756871A (en) | Real-time early warning method and system for hard roof type rock burst |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |