CN107559045B - Underground coal mine Face Pressure Early-Warning System and method - Google Patents
Underground coal mine Face Pressure Early-Warning System and method Download PDFInfo
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- CN107559045B CN107559045B CN201710733011.4A CN201710733011A CN107559045B CN 107559045 B CN107559045 B CN 107559045B CN 201710733011 A CN201710733011 A CN 201710733011A CN 107559045 B CN107559045 B CN 107559045B
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Abstract
A kind of underground coal mine Face Pressure Early-Warning System and method, belong to field of coal mining, mainly include monitoring modular and prediction and warning module.Its calculation formula and statistical law based on mine pressure correlation theory, working face relevant information collection processing to different periods, Face Pressure intensity and prediction are prejudged every time come the position pressed and intensity, preceding pressure early warning is adopted before realizing working face mining, early warning and instant early warning when long during working face mining, meanwhile it being based on backstage large database concept data, provide corresponding strong mine pressure diaster prevention and control countermeasure.The system realizes comprehensive mechanization working face to press all the period of time prediction of position and intensity, press dynamic early-warning, to Support selection, the pressure damage control of strong mine and administers and has directive significance, the safety and high efficiency in safeguard work face.
Description
Technical field
The present invention is a kind of underground coal mine Face Pressure Early-Warning System and method, is particularly suitable for coal mining neck
Comprehensive mechanization working face mining first weighting and periodic weighting ground pressure strength and come the anticipation early warning of pressing position in domain.
Technical background
In coal mine work recovery process, working face is to influence an important factor for safety of coal mines efficiently produces to press, in advance in advance
Working face is known to press position and ground pressure strength that there is important directive significance to safe and efficient production.Although periodic weighting has one
Fixed water component, but influenced by many factors, water component fluctuates in a certain range, and ground pressure strength also has difference
It is different.Mechanization and the higher working face hydraulic prop equipment of intelligence degree is widely used in modernization coal-mining technique, has pressure
Monitoring, pressure early warning and highly automated monitoring function, but it is more than setting value that its pressure early warning, which is only with regard to single poppet pressure,
And provide, cannot reflect working face presses situation.
Underground coal mine face pressure early warning system and method theory and big data based on Judging key stratum mine Compressive Strength
Statistical law brings the systems such as contracting amount under the full column information of surface drilling, working resistance of support, bracket upright post to work into
The anticipation of face ground pressure strength and position, realize ground pressure strength early warning before adopting, it is long when early warning and instant early warning all the period of time early warning, together
When, it can be pressed according to prediction as a result, transfer data bank information, provide corresponding control measure, realize that working face safety is high
Effect exploitation.
Summary of the invention
Technical problem: being capable of comprehensive analysis the purpose of the present invention is aiming at the problems existing in the prior art, providing one kind
The working face of contracting amount presses early warning system and method under overlying strata feature, operational parameter, working resistance of support and bracket upright post, predicts
Information is pressed with forecast work face, to take corresponding measure in time.
Technical solution: underground coal mine Face Pressure Early-Warning System of the invention, including monitoring modular and prediction are in advance
Alert module, the monitoring modular includes contracting under the pressure sensor and column being located on comprehensive mechanization working surface hydraulic support
Measure monitor；To monitor contracting amount under hydraulic support working resistance and hydraulic support column, the prediction and warning module includes
Input unit, processing unit, output unit, storage unit pass through cable network between each section and connect；
The processing unit carries out processing judgement by information of the computer programming to input, and judgment basis is based on key
Shelf theory and correlation formula based on Judging key stratum mine Compressive Strength, meanwhile, it will judge that information and big data data bank carry out
Match.
Using the underground coal mine Face Pressure prediction and warning method of above system, include the following steps:
A. before working face mining, the column data of all surface drillings of working face across pitch is collected, extremely by main mining coal seam
The input of the essential information, physical and mechanical parameter and mining thickness input prediction warning module of the full column rock stratum of drilling of earth's surface
Unit carries out position of key stratum differentiation to surface drilling column by processing unit, according to the differentiation of position of key stratum as a result, tying again
It closes mining thickness, directly push up and the spaced position relationship of each key stratum preservation property, each key stratum and main mining coal seam, land in gully
Key stratum is etched degree in landforms, coal column and lower working face of coal seam spacing and position corresponding relationship are left in upper coal seam, differentiates true
Determine each key stratum of overlying strata the fracture form of cantilever beam or masonry beam is presented, influences the overlying strata critical altitude of Face Pressure and covers
Rock is to the influence degree of Face Pressure, accordingly, prediction work face first weighting and periodic weighting position before working face mining
And intensity, automatic realization working face adopts pressure prediction, while providing the conjunction of force piece under specific geology mining conditions
Manage type selecting；
B. working face mining initial stage, input unit obtain the force piece working resistance curve of monitoring modular feedback in time
Show situation with scene to press, be based on statistical law, analyzes the working resistance curve and water component feature of bracket, supplement and school
Just adopt pressure early warning, position and dynamic load factor are pressed in prediction work face next time, when realizing long during working face extraction
Early warning；
C. it during working face mining, monitoring modular and prediction and warning module Real-Time Sharing working resistance of support data and stands
Contracting amount data under column；Processing unit compares under bracket upright post single cycle in real time between contracting amount, working resistance of support and setting value
Relationship works when contracting amount is more than setting value X (mm) under continuous multiple bracket upright post single cycles, or more than 70% quantitative proportion
When the working resistance of face bracket is greater than the set value Y (MPa), the output unit of prediction and warning module will be automatically with warning lamp and pressure
What the form of report provided working face presses warning information, i.e. instant early warning during realization working face extraction；
D. according to the warning information of working face ground pressure strength, i.e. the pressure report early warning letter that is provided in step b and step c
Breath, by transferring large database concept data, independently matches and provides face propulsion speed, supporting intensity, rational position etc.
Pressure allow the strong mine pressure disaster such as pressure, explosion presplitting or the measure of hydrofracturing top plate, local reinforcement, partial stowage Preventing Countermeasures and build
View, to take measures to carry out the voltage-controlled system of reasonable mine on site；
E. prediction and warning information each time is all stored in time by storage unit and is uploaded cloud, can transfer output at any time,
Meanwhile information categorization to big data data bank with data bank of enriching constantly, to improve early warning accuracy.
The essential information of the full column rock stratum of drilling of the earth's surface inputted in the step a is required to represent exploited work
The coating information that face is entirely moved towards copes with working face segmentation, input is bored respectively if exploitation working face geology condition changes greatly
The full column information in hole, carry out working face adopts pressure prediction.
Scene in the step b is come to press situation include face roof, coal wall, both ends, stope drift active workings advance support section
Feature is input to the input unit of prediction and warning module by staff.
Working face is judged come setting value whether pressure in the step c, i.e., the judgement of contracting amount is set under bracket upright post single cycle
Definite value (x), bracket working face resistance judge setting value (Y) and increase the determination of resistance number of holders percentage to be to have adopted work by neighbouring
Face actual conditions provide, and correct in this working face mining early period and recovery process.
The big data data bank is for Face Pressure feature under different mining areas different exploitation condition for many years and to press
Situation data, while the statistics including corresponding strong mine pressure prevention and control measure, to match and instruct working face safe working.
The utility model has the advantages that by adopting the above-described technical solution, the invention has the following advantages over the prior art:
1. the system provides working face from different time sections to press warning information, instructs the Support selection of working face, provides
Strong mine pressure damage control and control measures (such as supporting intensity and form, reinforcement supporting and interim measure)；
2. adopting pressure to working face according to contracting amount realization under the full column that drills, working resistance of support and bracket upright post
It is pressed when long in degree, recovery process and immediately come the comprehensive prediction anticipation pressed, more accurately and timely, powerful guarantee shaft production
Safety.
Detailed description of the invention
Fig. 1 underground coal mine Face Pressure Early-Warning System and method structure chart；
Fig. 2 underground coal mine Face Pressure Early-Warning System and method work flow diagram.
Specific embodiment
One embodiment of the present of invention is further described with reference to the accompanying drawing:
As shown in Figure 1, underground coal mine Face Pressure Early-Warning System of the invention, mainly by monitoring modular and prediction
Warning module is constituted, and the monitoring modular includes the pressure sensor being located on comprehensive mechanization working surface hydraulic support and stands
Contracting amount monitor under column；To monitor contracting amount under hydraulic support working resistance and hydraulic support column, the prediction and warning mould
Block includes input unit, processing unit, output unit, storage unit, is connected between each section by cable network；
The processing unit carries out processing judgement by information of the computer programming to input, and judgment basis is based on key
Shelf theory and correlation formula based on Judging key stratum mine Compressive Strength, meanwhile, it will judge that information and big data data bank carry out
Match.
As shown in Fig. 2, underground coal mine Face Pressure prediction and warning method of the invention, the specific steps are as follows:
A. before working face mining, the column data of all surface drillings of working face across pitch is collected, extremely by main mining coal seam
The input of the essential information, physical and mechanical parameter and mining thickness input prediction warning module of the full column rock stratum of drilling of earth's surface
Unit carries out position of key stratum differentiation to surface drilling column by processing unit, according to the differentiation of position of key stratum as a result, tying again
It closes mining thickness, directly push up and the spaced position relationship of each key stratum preservation property, each key stratum and main mining coal seam, land in gully
Key stratum is etched degree in landforms, coal column and lower working face of coal seam spacing and position corresponding relationship are left in upper coal seam, differentiates true
Determine each key stratum of overlying strata the fracture form of cantilever beam or masonry beam is presented, influences the overlying strata critical altitude of Face Pressure and covers
Rock is to the influence degree of Face Pressure, accordingly, prediction work face first weighting and periodic weighting position before working face mining
And intensity, automatic realization working face adopts pressure prediction, while providing the conjunction of force piece under specific geology mining conditions
Manage type selecting；The essential information of the full column rock stratum of surface drilling is required to represent the coating that exploited working face entirely moves towards
Information copes with working face segmentation if exploitation working face geology condition changes greatly, respectively the full column information of input drilling, into
Row working face adopts pressure prediction；
B. working face mining initial stage, input unit obtain the force piece working resistance curve of monitoring modular feedback in time
Show situation with scene to press, be based on statistical law, analyzes the working resistance curve and water component feature of bracket, supplement and school
Just adopt pressure early warning, position and dynamic load factor are pressed in prediction work face next time, when realizing long during working face extraction
Early warning；To show situation include face roof, coal wall, both ends, stope drift active workings advance support section feature pressing at the scene, by work
The input unit of prediction and warning module is input to as personnel；
C. it during working face mining, monitoring modular and prediction and warning module Real-Time Sharing working resistance of support data and stands
Contracting amount data under column；Processing unit compares under bracket upright post single cycle in real time between contracting amount, working resistance of support and setting value
Relationship works when contracting amount is more than setting value X (mm) under continuous multiple bracket upright post single cycles, or more than 70% quantitative proportion
When the working resistance of face bracket is greater than the set value Y (MPa), the output unit of prediction and warning module will be automatically with warning lamp and pressure
What the form of report provided working face presses warning information, i.e. instant early warning during realization working face extraction；The judgement
Working face is come setting value whether pressure, i.e., contracting amount judges setting value (X), the judgement of bracket working face resistance under bracket upright post single cycle
Setting value (Y) and the determination for increasing resistance number of holders percentage are provided by neighbouring mining face actual conditions, and in this work
It is corrected in face exploitation early period and recovery process；
D. according to the warning information of working face ground pressure strength, i.e. the pressure report early warning letter that is provided in step b and step c
Breath, by transferring large database concept data, independently matches and provides face propulsion speed, supporting intensity, rational position etc.
Pressure allow the strong mine pressure disaster such as pressure, explosion presplitting or the measure of hydrofracturing top plate, local reinforcement, partial stowage Preventing Countermeasures and build
View, to take measures to carry out the voltage-controlled system of reasonable mine on site；The big data data bank is that different mining areas are not for many years
With Face Pressure feature under mining conditions and to press situation data, while the statistics money including corresponding strong mine pressure prevention and control measure
Material, to match and instruct working face safe working；
E. prediction and warning information each time is all stored in time by storage unit and is uploaded cloud, can transfer output at any time,
Meanwhile information categorization to big data data bank with data bank of enriching constantly, to improve early warning accuracy.
Embodiment 1,
Certain pit coal layer buried depth 500m, geological conditions is simple, and ocurrence of coal seam is stablized, average thickness 15m, using comprehensive mechanization
Top coal caving technique back production, face width 200m.
Before working face mining, by working face trend one at the full column information input system of surface drilling, judge the coal seam
There are five layers of key stratum in overlying strata, wherein pressing working face influential is following three layers of key stratum, prediction work face is come for the first time
After pressing position and ground pressure strength early warning, it is proposed that select 15000kN or more hydraulic support stand face roof；
Working face mining early period, system show situation by analysis force piece resistance curve and scene to press, prejudge
Working face each periodic weighting intensity with press position, provide working face it is long when early warning, determine ahead work face supporting distance
It should be greater than 50m, stope drift active workings carry out advance support using four row's individual props；
Referring to mining area mining face actual conditions, contracting amount is come within 16mm under the normal single cycle of force piece
Generally more than 20mm when pressure, it is more than 18mm that setting, which has contracting amount under 70% single cycle in the hydraulic support (more than continuous 10 frame) of statistics,
To press early warning value；It is non-to recycle last resistance generally within 36MPa come force piece when pressing, last resistance is recycled come bracket when pressing
More than 40MPa, at this point, having 70% working resistance in the hydraulic support (more than continuous 10 frame) of desirable statistics is more than that 38MPa makees
To press early warning value.In exploitation working face early period and the concrete condition of this working face further adjusts relevant parameter
It is whole, improve the accuracy of early warning.
Under the premise of obtaining in advance to press early warning, when working face takes reinforcement supporting and time shift frame to reduce empty top in time
Between and working face quickly propel equal measures, safety in production is realized in the influence for reducing to press.
Claims (5)
1. a kind of underground coal mine Face Pressure prediction and warning method, the underground coal mine Face Pressure Early-Warning System used
It include: monitoring modular and prediction and warning module, the monitoring modular includes being located on comprehensive mechanization working surface hydraulic support
Pressure sensor and column under contracting amount monitor, to monitor contracting amount under hydraulic support working resistance and hydraulic support column；
The prediction and warning module includes input unit, processing unit, output unit, storage unit, is passed through between each section wired
Network connection；The processing unit carries out processing judgement by information of the computer programming to input, and judgment basis is based on closing
Key shelf theory and correlation formula based on Judging key stratum mine Compressive Strength, at the same will judge information and big data data bank carry out
Match；
It is characterized by comprising following steps:
A. before working face mining, the column data of all surface drillings of working face across pitch is collected, by main mining coal seam to earth's surface
The essential information of the full column rock stratum of drilling, physical and mechanical parameter and mining thickness input prediction warning module input list
Member, by processing unit to surface drilling column carry out position of key stratum differentiation, according to the differentiation of position of key stratum as a result, in conjunction with
Mining thickness directly pushes up and each key stratum preservation property, the spaced position relationship of each key stratum and main mining coal seam, land in gully
Key stratum is etched degree in looks, coal column and lower working face of coal seam spacing and position corresponding relationship are left in upper coal seam, differentiates and determines
Each key stratum of overlying strata is presented the fracture form of cantilever beam or masonry beam, influences the overlying strata critical altitude and overlying strata of Face Pressure
To the influence degree of Face Pressure, accordingly, before working face mining prediction work face first weighting and periodic weighting position and
Intensity, it is automatic realize working face adopts pressure prediction, while providing the reasonable of force piece under specific geology mining conditions
Type selecting；
B. working face mining initial stage, input unit obtain the force piece working resistance curve of monitoring modular feedback in time and show
Field shows situation to press, and is based on statistical law, analyzes the working resistance curve and water component feature of bracket, and supplement and correction are adopted
Come to press early warning, position and dynamic load factor are pressed in prediction work face next time, early warning when realizing long during working face extraction；
C. during working face mining, under monitoring modular and prediction and warning module Real-Time Sharing working resistance of support data and column
Contracting amount data；Processing unit compares the relationship under bracket upright post single cycle between contracting amount, working resistance of support and setting value in real time,
When contracting amount is more than setting value X (mm) under continuous multiple bracket upright post single cycles, or more than 70% quantitative proportion force piece
Working resistance be greater than the set value Y(MPa) when, the output unit of prediction and warning module will be reported automatically with warning lamp and pressure
What form provided working face presses warning information, i.e. instant early warning during realization working face extraction；
D. according to the warning information of working face ground pressure strength, i.e. the pressure report warning information provided in step b and step c is led to
It crosses and transfers big data data bank data, independently match and provide the top including face propulsion speed, supporting intensity, rational position
Plate be modified reduction measure, local reinforcement, strong mine pressure disaster Preventing Countermeasures and suggestion, so as to take measures to carry out on site rationally
The voltage-controlled system of mine；
E. prediction and warning information each time is all stored in time by storage unit and is uploaded cloud, can transfer output at any time, meanwhile,
Information categorization to big data data bank with data bank of enriching constantly, to improve early warning accuracy.
2. underground coal mine Face Pressure prediction and warning method according to claim 1, it is characterised in that: in the step a
The full column rock stratum information requirements of the surface drilling of input can represent the coating information that exploited working face entirely moves towards, if exploitation
Working face geology condition changes greatly, then copes with working face segmentation, and the full column information of input drilling, carries out adopting for working face respectively
Come pressure prediction.
3. underground coal mine Face Pressure prediction and warning method according to claim 1, it is characterised in that: showing in the step b
To show situation include face roof, coal wall, both ends, stope drift active workings advance support section feature pressing, and is inputted by staff
To the input unit of prediction and warning module.
4. underground coal mine Face Pressure prediction and warning method according to claim 1, it is characterised in that: sentencing in the step c
Disconnected working face is come setting value whether pressure, i.e., contracting amount judges that setting value (X), bracket working face resistance are sentenced under bracket upright post single cycle
Disconnected setting value (Y) and the determination for increasing resistance number of holders percentage are by providing adjacent to mining face actual conditions, and in this work
Make to correct in face exploitation early period and recovery process.
5. underground coal mine Face Pressure prediction and warning method according to claim 1, it is characterised in that: the big data data
Library is Face Pressure feature and to press situation data under different mining areas different exploitation conditions for many years, while including corresponding strong
Mine presses the statistics of prevention and control measure, to match and instruct working face safe working.
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| CN109948268B (en) * | 2019-01-21 | 2023-10-17 | 安迈智能(北京)矿山科技股份有限公司 | Automatic recognition method for comprehensive risk of working face |
| CN110397475B (en) * | 2019-08-09 | 2020-05-01 | 精英数智科技股份有限公司 | Fully-mechanized mining face advance support and super-prop-drawing monitoring and early warning method, device and system |
| CN110889087A (en) * | 2019-10-29 | 2020-03-17 | 青岛本末岩控技术有限公司 | Mine pressure big data real-time prediction system and method based on fully mechanized coal mining face |
| CN111027687B (en) * | 2019-12-29 | 2023-01-10 | 鄂尔多斯市伊化矿业资源有限责任公司 | Mining pressure prediction treatment method and system during stoping period of coal mine working face |
| CN111219207B (en) * | 2020-01-02 | 2021-11-05 | 神华神东煤炭集团有限责任公司 | Fully mechanized mining face pressure step distance automatic measuring method and electronic equipment |
| CN111832150A (en) * | 2020-03-03 | 2020-10-27 | 天地科技股份有限公司 | Mine pressure prediction method and device and electronic equipment |
| CN111734492B (en) * | 2020-07-02 | 2021-08-24 | 中国矿业大学 | Intelligent working surface roof fall early warning method based on U-shaped area characteristic parameter extraction |
| CN111828095B (en) * | 2020-07-09 | 2021-11-19 | 郑州普泽能源科技有限公司 | Dynamic prediction method for top plate incoming pressure |
| CN112031839B (en) * | 2020-07-20 | 2022-11-08 | 中煤科工开采研究院有限公司 | Mine pressure space-time bi-periodic prediction method, device and equipment under limited data condition |
| CN114109506B (en) * | 2021-11-26 | 2022-06-17 | 中国矿业大学 | Coal mine earthquake risk assessment method |
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| WO1999030004A1 (en) * | 1997-12-09 | 1999-06-17 | The Government Of The United States Of America, As Represented By The Secretary Of The Department Of Health And Human Services | Remote monitoring safety system |
| CN103362553B (en) * | 2013-07-08 | 2015-06-10 | 中国矿业大学 | Coal mine underground safety comprehensive monitoring system based on fiber grating sensors |
| CN104454010B (en) * | 2014-12-10 | 2016-04-20 | 西安科技大学 | A kind of deep-well tunnel tunneling construction dynamic comprehensive monitor and early warning system and method for early warning |
| CN105298543B (en) * | 2015-11-18 | 2018-01-09 | 四川航天电液控制有限公司 | A kind of Coal Mine presses analysis system |
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