CN107392394A - A kind of dynamic monitoring driving face coal and gas prominent hazard prediction method - Google Patents
A kind of dynamic monitoring driving face coal and gas prominent hazard prediction method Download PDFInfo
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Abstract
A kind of driving face coal and gas prominent hazard prediction method of dynamic monitoring, comprises the following steps：（a）Determine mine geological structure area of stress influence, exploitation stress relief area and exploitation region of stress concentration；（b）Constructed by having dug tunnel into square coal body in face of monitored tunnelling several pressure measuring drill holes；（c）Online or offline coal-bed gas pressure Dynamic Changes Analysis system is installed；（d）Coal-bed gas pressure data and change curve are recorded and preserved automatically by online or offline coal-bed gas pressure Dynamic Changes Analysis system；（e）According to coal-bed gas pressure data and change curve, determine that coal and gas prominent is dangerous in front of monitoring tunnel according to judgment criterion.The present invention investigates the influence of geological structure, mining induced stress and coal-bed gas pressure to coal and gas prominent comprehensively by the regularity of distribution of coal-bed gas pressure in coal body in front of dynamic monitoring development end, so can be more scientific monitoring tunnelling in coal and gas prominent danger.
Description
Technical field
The present invention relates to monitor driving face coal and gas prominent hazard prediction method based on coal seam Pressure behaviour.
Background technology
At present, China's coal-mine Driving Face in Coal Tunnel coal and gas prominent danger forecasting and verification method are mainly using brill
Consider the robustness index method of desorption of mash gas index, coal powder quantity of bore, coal seam gas-bearing capacity and coal to be worth doing.It is primarily present using the above method following
The problem of several aspects：1. prediction and checking means are " selective examination " formulas, dynamic monitoring is not carried out；2. prediction and verification process
Middle human factor is too many, easily causes measurement result very big error to be present, high target occurs and does not protrude what is protruded with low index
Situation happens occasionally；3. said determination index is the indirect indexes of forecasting coal and gas outburst risk mostly；4. using above-mentioned
The problem of Prediction distance is short, estimation range is small be present in traditional coal and gas prominent danger forecasting and verification method；5. tradition
Prediction and verification method, which need to determine in driving face construction parameter, to drill, and construction parameter hole certainly will reduce effective heading driver
When, influence drivage efficiency；6. intelligent safety of coal mines equipment, informationization, the development trend to become more meticulous can not be met, due to existing
There is the problem of above-mentioned many aspects in technology, inaccurate problem both be present when predicting driving face coal and gas prominent, and
And drivage efficiency is had an effect on, the security of coal production can not ensure with economy.
The content of the invention
The achievement in research of coal and gas prominent mechanism acquirement is directed to according to applicant, high coal-bed gas pressure and deformation coal
Preservation is to cause the main cause of coal and gas prominent.According to conventional achievement in research, no matter shock blasting or advanced by beating major diameter
Coal and gas prominent caused by boring procedure and hydraulic flushing in hole spray orifice, pulsating or gentle pressure can occur for coal body in outburst area
Compression deformation, then coal-bed gas pressure can also occur or drastically or slowly rising, the i.e. change procedure of coal-bed gas pressure are
Deformation with coal seam has dependency relation, and coal seam is compressed, and gas pressure increase, vice versa.Therefore, coal seam is being carried out
A static index is treated as when gas pressure measurement always to go to investigate, i.e., the coal-bed gas pressure in one region is
Certain, measure will not go to investigate its dynamic changing process influenceed by digging after terminating.But in fact, from rock mechanics
Angle investigate this do not destroy completely coal body can only occur dilatation destruction, occur dilatation destroy after coal body volume increase, it is this
In the case of coal-bed gas pressure can only decline, so, be not under these conditions above-mentioned coal-bed gas pressure occur it is anxious
The process that play rises.So it will be understood that could only occur on drastically in the regional coal-seam gas pressure of preservation deformation coal
The change procedure risen, because the heavy damage structure that deformation coal shows was formed in all previous tectonic movement period,
The deformation coal that dilatation destroys is formed in the presence of tectonic movement, the density of these deformation coals is less than unbroken coal body.Later stage
In roadway excavation driving, compression occurs in the presence of crustal stress and digging disturbance.The dynamic of coal-bed gas pressure becomes
Change process can reflect the preservation situation of a regional structure coal.As can be seen here, become by monitoring the dynamic of coal-bed gas pressure
Change process can predict the outburst hazard of coal body.
The invention provides one kind based on coal seam Pressure behaviour monitoring driving face coal and gas prominent danger forecasting
Method.
The above-mentioned technical proposal of the present invention has advantages below compared with prior art：
One kind is based on coal seam Pressure behaviour monitoring driving face coal and gas prominent hazard prediction method, including following step
Suddenly：
（a）According to geological exploration data and pit mining data, determine that mine geological structure area of stress influence, exploitation stress are unloaded
Intermediate pressure section and exploitation region of stress concentration；
（b）For intending in the monitored tunnel of geological structure area of stress influence driving, dug in advance in exploitation stress relief area
Enter and monitor tunnel, crossover distance be more than the monitored advanced pressure peak in tunnel and monitored tunnelling identity distance from 1.5-2 times；
（c）At regular intervals apart from parallel several pressure measuring drill holes of being constructed into square coal body in face of monitored tunnelling, interval
Distance determines according to the Permeability Coefficent in Coal Seam of actual measurement；
（d）Online or offline coal-bed gas pressure Dynamic Changes Analysis system is installed, gas pressure is arranged in pressure measuring drill hole
Sensor, and be connected with outstation, online or offline coal-bed gas pressure Dynamic Changes Analysis system is debugged, opened
Beginning monitoring and the coal-bed gas pressure value for recording each pressure measuring drill hole；
（e）Coal-bed gas pressure is recorded and preserved automatically by online or offline coal-bed gas pressure Dynamic Changes Analysis system
Data and change curve；
（f）According to coal-bed gas pressure data and change curve, coal and gas in front of monitored tunnel are determined according to judgment criterion
Outburst hazard.
In the monitoring driving face coal and gas prominent hazard prediction method based on coal seam Pressure behaviour, installation
Online and offline coal-bed gas pressure Dynamic Changes Analysis system step includes：
（a）Upper computer software for coal-bed gas pressure Dynamic Changes Analysis is installed on ground system data server；
（b）Gas pressure sensor is installed to the predetermined pressure measurement position of coal bed pressure measurement drilling；
（c）Gas pressure sensor is connected on outstation；
（d）Outstation is accessed by underground coal mine looped network by optical cable；
（e）Ground system data server is accessed into underground coal mine looped network.
It is described based on coal seam Pressure behaviour monitoring driving face coal and gas prominent hazard prediction method in, when appoint
When the gas pressure value of what pressure measuring drill hole meets or exceeds 0.74MPa, outstation and upper computer software carry out language automatically
Sound is alarmed, while indicates the area monitoring information that coal-bed gas pressure exceedes 0.74MPa, including coal-bed gas pressure the real time measure
Value, maximum, the numbering of pressure measuring drill hole and the positional information of monitored area.
It is described based on coal seam Pressure behaviour monitoring driving face coal and gas prominent hazard prediction method in, when appoint
When the coal-bed gas pressure value of what pressure measuring drill hole rises, upper computer software is automatically red by the data of ascent stage and curve post,
The coal and gas prominent danger of coal body is rising in display pressure measuring drill hole control area, when the coal seam of any one pressure measuring drill hole
When gas pressure value declines, upper computer software is automatically green by the data of descending branch and curve post, in display pressure measuring drill hole control zone
The coal and gas prominent danger of coal body is declining.
In the monitoring driving face coal and gas prominent hazard prediction method based on coal seam Pressure behaviour, gas
Pressure sensor is connected with outstation in series by communication cable, watt that coal-bed gas pressure sensor is gathered
This pressure data stored record is in gas pressure outstation.
In the monitoring driving face coal and gas prominent hazard prediction method based on coal seam Pressure behaviour, pressure measurement
Drilling is vertical with monitored tunnelling direction.
Compared to prior art, the present invention has following technical advantage：
（1）It is provided by the invention that driving face coal and gas prominent hazard prediction method is monitored based on coal seam Pressure behaviour,
It is monitored using fore-drift, prison is dissolved into stress in coal bed change and the relationship change of geological structure and mining influence
Survey, as the danger of monitoring index prediction coal and gas prominent, therefore, the present invention not only largely expands pick
Enter the monitoring range of coal body outburst hazard in front of working face, and significantly improve to coal and gas prominent danger forecasting
Accuracy.
（2）It is provided by the invention that driving face coal and gas prominent danger forecasting side is monitored based on coal seam Pressure behaviour
Method, due to being monitored using fore-drift, when arrangement drills, pressure measuring drill hole spacing distance is breathed freely according to the coal seam of actual measurement
Property coefficient determines that therefore, the present invention can ensure gas pressure monitoring accuracy simultaneously, improve arrangement efficiency and reduce monitoring into
This.
（3）It is provided by the invention that driving face coal and gas prominent danger forecasting side is monitored based on coal seam Pressure behaviour
Method, it is from root due to carrying out the dangerous monitoring of coal and gas prominent according to Mine area geologic structure and mining influence composite factor
Person's character reason is prevented coal and gas prominent danger, and therefore, the present invention need not can need as other monitoring methods
Determine many index, but during accurately determining tunnelling only in accordance with the monitoring single index can of gas pressure
Coal and gas prominent risk degree, high degree eliminate interference of the non-key factor to prevention accuracy.
（4）It is provided by the invention that driving face coal and gas prominent danger forecasting side is monitored based on coal seam Pressure behaviour
Method, meet intelligent safety of coal mines technical equipment, informationization, the development trend to become more meticulous.
（5）It is provided by the invention that driving face coal and gas prominent danger forecasting side is monitored based on coal seam Pressure behaviour
Method, without in monitored Driving Face in Coal Tunnel construction parameter hole, and then drivage efficiency can be improved, and it is possible to using big
The quick comprehensive pick equipment of type.
Brief description of the drawings
In order that present disclosure is more likely to be clearly understood, specific embodiment and combination below according to the present invention
Accompanying drawing, the present invention is further detailed explanation, wherein
Fig. 1 is that the present invention implements to show based on coal seam Pressure behaviour monitoring driving face coal and gas prominent hazard prediction method
It is intended to；
In figure mark for：1- monitors tunnel, and 2- is monitored tunnel, 3- outstations, 4- gas pressure sensors, 5- pressure measurement brill
Hole.
Embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with accompanying drawing to embodiment party of the present invention
Formula is described in further detail.
It is of the invention a kind of dangerous pre- based on coal seam Pressure behaviour monitoring driving face coal and gas prominent shown in Fig. 1
The preferred embodiment of survey method.
It is described that driving face coal and gas prominent hazard prediction method is monitored based on coal seam Pressure behaviour including as follows
Step：
（a）According to geological exploration data and pit mining data, determine that mine geological structure area of stress influence, exploitation stress are unloaded
Intermediate pressure section and exploitation region of stress concentration；
（b）For intending in the monitored tunnel 2 of geological structure area of stress influence driving, dug in advance in exploitation stress relief area
Enter to monitor tunnel 1, crossover distance is more than the 1.5-2 of monitored 2 advanced pressure peak of tunnel and the monitored development end distance of tunnel 2
Times；
（c）At regular intervals apart from parallel several pressure measuring drill holes 5 of being constructed into coal body in front of the monitored development end of tunnel 2,
Gauge determines from according to the Permeability Coefficent in Coal Seam of actual measurement；
（d）Online or offline coal-bed gas pressure Dynamic Changes Analysis system is installed, the arrangement gas pressure in pressure measuring drill hole 5
Sensor 4, and be connected with outstation 3, online or offline coal-bed gas pressure Dynamic Changes Analysis system is debugged,
Start to monitor and record the coal-bed gas pressure value of each pressure measuring drill hole 5；
（e）Coal-bed gas pressure is recorded and preserved automatically by online or offline coal-bed gas pressure Dynamic Changes Analysis system
Data and change curve；
（f）According to coal-bed gas pressure data and change curve, determine that the monitoring front coal of tunnel 1 is dashed forward with gas according to judgment criterion
Go out danger.
In the present embodiment, installing online and offline coal-bed gas pressure Dynamic Changes Analysis system step includes：
（a）Upper computer software for coal-bed gas pressure Dynamic Changes Analysis is installed on ground system data server；
（b）Gas pressure sensor 4 is installed to 5 predetermined pressure measurement positions of coal bed pressure measurement drilling；
（c）Gas pressure sensor 4 is connected on outstation 3；
（d）Outstation 3 is accessed by underground coal mine looped network by optical cable；
（e）Ground system data server is accessed into underground coal mine looped network.
In the present embodiment, when the gas pressure value of any one pressure measuring drill hole meets or exceeds 0.74MPa, monitoring point
Stand 3 and upper computer software carry out audio alert automatically, while indicate coal-bed gas pressure more than 0.74MPa area monitoring believe
Breath, including the numbering of coal-bed gas pressure real time measurement, maximum, pressure measuring drill hole and the positional information of monitored area.
In the present embodiment, when the coal-bed gas pressure value of any one pressure measuring drill hole 5 rises, upper computer software is automatic
The data of ascent stage and curve post are red, and the coal and gas prominent danger of coal body is upper in display pressure measuring drill hole 5 control area
Rise, when the coal-bed gas pressure value of any one pressure measuring drill hole 5 declines, upper computer software is automatically by the data and song of descending branch
Line mark is green, and the coal and gas prominent danger of coal body is declining in display pressure measuring drill hole 5 control zone.
In the present embodiment, gas pressure sensor 4 is connected with outstation 3 in series by communication cable,
The gas pressure data storage that coal-bed gas pressure sensor 4 gathers is recorded in gas pressure outstation 3.
In the present embodiment, pressure measuring drill hole 5 is vertical with monitored tunnelling direction.
Obviously, above-described embodiment is only intended to clearly illustrate example, and is not the restriction to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among changing still in protection scope of the present invention.
Claims (6)
- A kind of 1. dynamic monitoring driving face coal and gas prominent hazard prediction method, it is characterised in that：Including following step Suddenly：（a）According to geological exploration data and pit mining data, determine that mine geological structure area of stress influence, exploitation stress are unloaded Intermediate pressure section and exploitation region of stress concentration；（b）For intending in the monitored tunnel of geological structure area of stress influence driving（2）, it is advanced in exploitation stress relief area Driving monitoring tunnel（1）, crossover distance, which is more than, is monitored tunnel（2）Advanced pressure peak and monitored tunnel（2）Development end away from From 1.5-2 times；（c）At regular intervals apart from parallel to monitored tunnel（2）Several pressure measuring drill holes of construction in coal body in front of development end （5）, spacing distance is according to the determination of the Permeability Coefficent in Coal Seam of actual measurement, pressure measuring drill hole（5）It is along coal bed drilling, pressure measurement air chamber position In monitored tunnel（2）In the contour line of tunnel；（d）Online or offline coal-bed gas pressure Dynamic Changes Analysis system is installed, in pressure measuring drill hole（5）Interior arrangement gas pressure Force snesor（4）, and and outstation（3）Connection, enters to online or offline coal-bed gas pressure Dynamic Changes Analysis system Row debugging, starts to monitor and records each pressure measuring drill hole（5）Coal-bed gas pressure value；（e）Coal-bed gas pressure is recorded and preserved automatically by online or offline coal-bed gas pressure Dynamic Changes Analysis system Data and change curve；（f）According to coal-bed gas pressure data and change curve, monitored tunnel is determined according to judgment criterion（2）Front coal with watt This outburst hazard.
- 2. dynamic monitoring driving face coal and gas prominent hazard prediction method according to claim 1, its feature exists In：Installing online and offline coal-bed gas pressure Dynamic Changes Analysis system step includes：（a）Upper computer software for coal-bed gas pressure Dynamic Changes Analysis is installed on ground system data server；（b）By gas pressure sensor（4）It is installed to coal bed pressure measurement drilling（5）Predetermined pressure measurement position；（c）By gas pressure sensor（4）It is connected to outstation（3）On；（d）By optical cable by outstation（3）Access underground coal mine looped network；（e）Ground system data server is accessed into underground coal mine looped network.
- 3. dynamic monitoring driving face coal and gas prominent hazard prediction method according to claim 1 or claim 2, its feature It is：When the gas pressure value of any one pressure measuring drill hole meets or exceeds 0.74MPa, outstation（3）It is soft with host computer Part carries out audio alert automatically, while indicates the area monitoring information that coal-bed gas pressure exceedes 0.74MPa, including coal-bed gas Pressure real time measurement, maximum, the numbering of pressure measuring drill hole and the positional information of monitored area.
- 4. dynamic monitoring driving face coal and gas prominent hazard prediction method according to claim 3, its feature exists In：When any one pressure measuring drill hole（5）Coal-bed gas pressure value when rising, upper computer software automatically by the data of ascent stage and Curve post is red, shows pressure measuring drill hole（5）The coal and gas prominent danger of coal body is rising in control area, when any one survey Pressure drilling（5）Coal-bed gas pressure value decline when, upper computer software is automatically green by the data of descending branch and curve post, display survey Pressure drilling（5）The coal and gas prominent danger of coal body is declining in control zone.
- 5. according to any dynamic monitoring driving face coal and gas prominent hazard prediction methods of claim 1-4, its It is characterised by：Gas pressure sensor（4）By communication cable in series with outstation（3）Connection, by coal seam watt This pressure sensor（4）The gas pressure data storage of collection is recorded in gas pressure outstation（3）.
- 6. dynamic monitoring driving face coal and gas prominent hazard prediction method according to claim 5, its feature exists In：Pressure measuring drill hole（5）It is vertical with monitored tunnelling direction.
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| CN109441547A (en) * | 2018-12-29 | 2019-03-08 | 煤炭科学技术研究院有限公司 | A kind of getting working face coal and gas prominent real-time system for monitoring and pre-warning and method |
| CN110017168A (en) * | 2019-03-25 | 2019-07-16 | 淮北矿业股份有限公司 | A kind of lower exploiting field gas pressure on-Line Monitor Device and on-line monitoring method |
| CN110905402A (en) * | 2019-11-13 | 2020-03-24 | 山东科技大学 | Pressure relief hole construction method based on mining induced stress dynamic monitoring |
| CN111485946A (en) * | 2020-04-17 | 2020-08-04 | 贵州工程应用技术学院 | Coal face gas outburst risk dynamic analysis method |
| CN114841546A (en) * | 2022-04-26 | 2022-08-02 | 天地（常州）自动化股份有限公司 | Intelligent risk control method for coal and gas outburst of excavation working face |
| CN114961696A (en) * | 2022-05-31 | 2022-08-30 | 西安科技大学 | Method for detecting gas parameters in directional long drill hole of coal seam |
| CN116187831A (en) * | 2023-01-30 | 2023-05-30 | 山西潞安环保能源开发股份有限公司 | Intelligent management and control system and method for heading machine based on big data |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441547A (en) * | 2018-12-29 | 2019-03-08 | 煤炭科学技术研究院有限公司 | A kind of getting working face coal and gas prominent real-time system for monitoring and pre-warning and method |
| CN109441547B (en) * | 2018-12-29 | 2024-03-19 | 煤炭科学技术研究院有限公司 | Real-time monitoring and early warning system and method for coal and gas outburst of mining working face |
| CN110017168A (en) * | 2019-03-25 | 2019-07-16 | 淮北矿业股份有限公司 | A kind of lower exploiting field gas pressure on-Line Monitor Device and on-line monitoring method |
| CN110905402A (en) * | 2019-11-13 | 2020-03-24 | 山东科技大学 | Pressure relief hole construction method based on mining induced stress dynamic monitoring |
| CN111485946A (en) * | 2020-04-17 | 2020-08-04 | 贵州工程应用技术学院 | Coal face gas outburst risk dynamic analysis method |
| CN114841546A (en) * | 2022-04-26 | 2022-08-02 | 天地（常州）自动化股份有限公司 | Intelligent risk control method for coal and gas outburst of excavation working face |
| CN114961696A (en) * | 2022-05-31 | 2022-08-30 | 西安科技大学 | Method for detecting gas parameters in directional long drill hole of coal seam |
| CN116187831A (en) * | 2023-01-30 | 2023-05-30 | 山西潞安环保能源开发股份有限公司 | Intelligent management and control system and method for heading machine based on big data |
| CN116187831B (en) * | 2023-01-30 | 2024-04-02 | 山西潞安环保能源开发股份有限公司 | Intelligent management and control system and method for heading machine based on big data |
| CN116882548A (en) * | 2023-06-15 | 2023-10-13 | 中国矿业大学 | Tunneling roadway coal and gas outburst prediction method based on dynamic probability reasoning |
| CN116882548B (en) * | 2023-06-15 | 2024-05-17 | 中国矿业大学 | Tunneling roadway coal and gas outburst prediction method based on dynamic probability reasoning |
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