CN204163771U

CN204163771U - Driving face in coal mine coal and gas prominent warning system

Info

Publication number: CN204163771U
Application number: CN201420597795.4U
Authority: CN
Inventors: 孙继平; 刘毅
Original assignee: China University of Mining and Technology Beijing CUMTB
Current assignee: China University of Mining and Technology CUMT; China University of Mining and Technology Beijing CUMTB
Priority date: 2014-10-16
Filing date: 2014-10-16
Publication date: 2015-02-18
Anticipated expiration: 2024-10-16

Abstract

The utility model discloses a kind of driving face in coal mine coal and gas prominent warning system, native system comprises monitoring server, monitoring host computer, the network switch, down-hole switch, substation and various sensor equipment, and give methane transducer, air velocity transducer, wind transducer, wind pressure sensor, Wind tunnel sensor, the layout of air door switch sensor sensor and method to set up, for Mine Safe Production Management personnel provide in real time accurately, the data directly relevant with coal-face coal and gas prominent and information, ensure the accurate and effective of warning.Native system has taken into full account the various characteristic feature of driving face in coal mine coal and gas prominent, implement simple, more adequately can judge the coal and gas prominent of driving face, coal and gas prominent effectively can be avoided to cause the accidents such as gas explosion, avoid or reduce because gas asphyxiation and gas explosion cause casualties.

Description

Driving face in coal mine coal and gas prominent warning system

Technical field

The utility model relates to a kind of driving face in coal mine coal and gas prominent warning system, and the method relates to sensor and the field such as to communicate.

Background technology

Coal is China's main energy sources, accounts for primary energy 70%.Coal industry is high risk industries, and the accidents such as gas, floods, fire, top board, coal dust annoying Safety of Coal Mine Production.In China's coal-mine generation severe and great casualty, majority is particularly serious gas accident, and the number of casualties that gas accident causes also is that in all coal mining accident, proportion is maximum.Therefore, gas accident control is very important.

Gas accident comprises the accidents such as gas explosion, coal and gas prominent, gas asphyxiation, gas combustion.Occur for avoiding or reducing coal and gas prominent accident, there has been proposed multiple coal or rock and gas outburst prevention treatment method, play an important role in Safety of Coal Mine Production work.But existing coal and gas prominent Real-Time Monitoring and forecasting procedure (comprising microseism, sound emission, electromagnetic radiation, infrared radiation etc.) rate of false alarm and rate of failing to report also higher, be difficult to the needs meeting Safety of Coal Mine Production.

Easily there is coal and gas prominent in the driving face of underground coal mine, if judge the coal and gas prominent in this region exactly, coal and gas prominent effectively can be avoided to cause the accidents such as gas explosion, avoid or reduce because gas asphyxiation and gas explosion cause casualties.

Utility model content

System described in the utility model mainly comprises: monitoring server, monitoring host computer, monitoring guest machine, the network switch, down-hole switch, substation, methane transducer, air velocity transducer, wind transducer, wind pressure sensor, Wind tunnel sensor, air door switch sensor, feed sensor.In coal road, half-coal rock roadway and the stone drifting work plane having Gas and return thereof, air intake lane, exploiting field, exploiting field return airway, a wing air intake lane, a wing return airway, total air intake lane, main return airway place gamut or the dense methane transducer of height; Air velocity transducer is placed at digging laneway return, exploiting field return airway, a wing return airway and main return airway; Wind transducer is placed in divide air port place, air intake lane, exploiting field, a wing air intake lane, total air intake lane of driving face air intake; Wind pressure sensor is placed in the wind cave of chief ventilators; Chief ventilators, booster place apparatus start-stop sensor; Air door switch sensor placed by main air door in mine and exploiting field main air entering and returning tunnel; The air duct end of local fan of heading face places Wind tunnel sensor; The load side of the controlled switch of methane electric locking and lock between air and electricity places feed sensor.

This system comprises further: methane transducer is gamut or the dense methane transducer of height, and has automatic alarm and power down function, when methane concentration reaches warning concentration, sends sound and light alarm signal; When methane concentration reaches power-off required concentration, cut off relevant range power supply.

This system comprises further: the methane transducer alarming value of a wing return airway and main return airway is set as methane concentration 0.7%.

This system comprises further: the methane transducer alarming value in air intake lane, exploiting field, a wing air intake lane, total air intake lane is set as methane concentration 0.5%.

This system comprises further: in driving face, driving face return, the methane transducer alarming value of exploiting field return airway is set as methane concentration 1.0%.

This system comprises further: air velocity transducer has auto-alarm function, when wind speed is abnormal, sends sound and light alarm signal.

This system comprises further: wind transducer has auto-alarm function, when there is wind current control, sends sound and light alarm signal.

This system comprises further: air door switch sensor has auto-alarm function, when twice air door is opened simultaneously, sends sound and light alarm signal.

Accompanying drawing explanation

Fig. 1 underground monitoring system schematic diagram.

Fig. 2 driving face sensor mounting location schematic diagram.

Detailed description of the invention

As shown in Figure 1, driving face in coal mine coal and gas prominent warning system comprises:

1. monitoring server (1); Be responsible for gathering each sensor signal, storing, and monitor methane concentration, wind direction, the data variation of air velocity transducer and sensor fault.

2. monitoring host computer (2); Production management personnel check data variation and the sensor fault of sensor by monitoring host computer, manually can send warning and fail secure signal, cut off underground coal mine whole non-intrinsically safe secured electrical device power supply (DPS), issue dispatch command notice and withdraw from coal mine underground operators.And history monitor data can be transferred from monitoring server.

3. monitor guest machine (3); When monitoring host computer breaks down, carry out work by monitoring guest machine.

4. the network switch (4); Be responsible for management and the exchanges data of the equipment of the mining Ethernet of all accesses.

5. down-hole switch (5); Be responsible for access and the exchanges data of substation.

6. substation (6); Be responsible for access and the exchanges data of sensor.

7. methane transducer (7); When methane concentration reaches warning concentration, send alarm signal; When methane concentration reaches power-off required concentration, cut off relevant range power supply.

8. air velocity transducer (8) is when wind speed is abnormal, sends alarm signal.

9. wind transducer (9); When there is wind current control, send alarm signal.

10. wind pressure sensor (10); When blast is abnormal, send alarm signal.

11. Wind tunnel sensors (11); When wind speed cylinder is abnormal, send alarm signal.

12. air door switch sensors (12); When twice air door is opened simultaneously, send alarm signal.

13. feed sensors (13); When electric voltage exception, send alarm signal.

At driving face T1, T2, air intake lane, exploiting field T5, exploiting field return airway T6 in driving face return, one wing air intake lane T7, a wing return airway T8, total air intake lane T9, these regional locations of main return airway T10, place gamut or height dense methane transducer T1J, T2J, T5J, T6J, T7J, T8J, T9J, T10J respectively; Wherein T8J and T10J alarming value is set as methane concentration 0.7%; T5J, T7J, T9J alarming value is set as methane concentration 0.5%; T1J, T2J, T6J alarming value is set as methane concentration 1.0%.

At digging laneway return T2, exploiting field return airway T6, a wing return airway T8 and these regional locations of main return airway T10, place air velocity transducer T2S, T6S, T8S, T10S respectively;

At point air port T3, air intake lane, exploiting field T5, a wing air intake lane T7, always air intake lane these regional locations of T9 of driving face air intake, place wind transducer T3F, T5F, T7F, T9F respectively.

Driving face sensor setting position as shown in Figure 2, specifically comprises:

1. driving face position, methane transducer (201) T1J.

2. digging laneway return position, methane transducer (202) T2J and air velocity transducer (203) T2S.

3. point tuyere position of driving face air intake, air velocity transducer (204) T3F.

Monitor staff, by monitoring host computer real time sensor data, can judge whether to report to the police according to following breakdown judge table.

Claims

1. a driving face in coal mine coal and gas prominent warning system, mainly comprises: monitoring server, monitoring host computer, monitoring guest machine, the network switch, down-hole switch, substation, methane transducer, air velocity transducer, wind transducer, wind pressure sensor, Wind tunnel sensor, air door switch sensor, feed sensor; It is characterized in that: in coal road, half-coal rock roadway and the stone drifting work plane having Gas and return thereof, air intake lane, exploiting field, exploiting field return airway, a wing air intake lane, a wing return airway, total air intake lane, main return airway place gamut or the dense methane transducer of height; Air velocity transducer is placed at digging laneway return, exploiting field return airway, a wing return airway and main return airway; Wind transducer is placed in divide air port place, air intake lane, exploiting field, a wing air intake lane, total air intake lane of driving face air intake; Wind pressure sensor is placed in the wind cave of chief ventilators; Chief ventilators, booster place apparatus start-stop sensor; Air door switch sensor placed by main air door in mine and exploiting field main air entering and returning tunnel; The air duct end of local fan of heading face places Wind tunnel sensor; The load side of the controlled switch of methane electric locking and lock between air and electricity places feed sensor.

2. warning system as claimed in claim 1, is characterized in that: methane transducer is gamut or the dense methane transducer of height, and has automatic alarm and power down function, when methane concentration reaches warning concentration, sends sound and light alarm signal; When methane concentration reaches power-off required concentration, cut off relevant range power supply.

3. warning system as claimed in claim 1, is characterized in that: the methane transducer alarming value of a wing return airway and main return airway is set as methane concentration 0.7%.

4. warning system as claimed in claim 1, is characterized in that: the methane transducer alarming value in air intake lane, exploiting field, a wing air intake lane, total air intake lane is set as methane concentration 0.5%.

5. warning system as claimed in claim 1, is characterized in that: in driving face, driving face return, the methane transducer alarming value of exploiting field return airway is set as methane concentration 1.0%.

6. warning system as claimed in claim 1, is characterized in that: air velocity transducer has auto-alarm function, when wind speed is abnormal, sends sound and light alarm signal.

7. warning system as claimed in claim 1, is characterized in that: wind transducer has auto-alarm function, when there is wind current control, sends sound and light alarm signal.

8. warning system as claimed in claim 1, is characterized in that: air door switch sensor has auto-alarm function, when twice air door is opened simultaneously, sends sound and light alarm signal.