8 • 13 Jisheng mining gas accident, 8 • 28 Xinjiang Changji mine disaster, 8 • 29 Panzhihua mine disaster, a series of mine accidents took away the lives of dozens of people, the continued mine disaster once again hurt people. Turning on the calendar for each calendar year, there are a few pages of heavy, black calendars in each month. One mine disaster, one disaster, and the word "mining disaster" appear on television and newspapers. What is the reason for frequent mine accidents? Do not explore the management level, the industry sent a sound another point of view, mine security monitoring situation?

News background:

Changji Mine Difficulties: At 18:20 on August 28th, a coal mine disaster occurred in the Hongxing Coal Mine of Santunhe, Changji City, Xinjiang. As of August 29th, 2:30 am, 6 people were killed in the coal mine accident in the Bauxite Mine, and 6 people died. Injured. Among them: 2 people died on the spot, 4 died after being rescued, and 6 wounded were no longer in danger.

Panzhihua Mine Difficulty: At about 18:00 on August 29th, 2012, a gas explosion occurred at the Xiaojiawan Coal Mine in the West Area of ​​Zhengjin Industry and Trade Co., Ltd., Panzhihua City. According to the latest news at 8:28 on the 30th, the remains of four victims were found in the underground. At this point, a total of 19 people were killed in the accident and 28 people were trapped underground.

According to statistics, in the first half of 2012, there were 7 major accidents that occurred in the country's coal mines, resulting in a death toll of 98, up 22.5% year-on-year.

Outside the policy, is the mining area up to standard?

The coal mine safety issue has always been highly concerned by the state. Many relevant policies and regulations have been promulgated, and investment in the construction of a coal mine production safety precaution system has been intensified. However, coal mine safety accidents still occur frequently. Therefore, even the “Policy for requiring the coal mine leaders to go up with the miners to raise wells together” has begun to be questioned. In fact, the corresponding policies can only prevent the further occurrence of coal mine accidents to a certain extent, prompting the mine owners to pay attention to the construction safety of miners and the life safety of miners. The key reason for the frequent occurrence of coal accidents is that the safety facilities in the mining areas are not up to standard, and there are many hidden safety hazards. So, how to build a safe coal mine production environment, what security facilities?

The three networks integration monitoring scientific management coal mine safety visualization network monitoring system is mainly the use of network video technology and its application in coal mine safety monitoring system. The technology organically integrates the local area network, WLAN network and VPN network to realize comprehensive monitoring of network video from downholes, mining areas and remote sites. It provides coal mine safety supervisors with an accurate and timely understanding of the safety conditions of underground sites and scientific command and dispatch. The prevention of production safety accidents and the realization of safe production and scientific management of coal mines provide an important basis for timely and accurate.

This system has been widely applied in large, medium and small coal mines, which has reduced illegal operations and poor production links. This has reduced the likelihood of accidents in coal mines to the lowest possible point, and has brought economic and social benefits to coal mining companies.

GIS Graphic Synthesis Analysis Mining Area Environment Coal Mine Gas Monitoring System GIS Graphic Synthesis Analysis Technology Integrate mine excavation engineering, ventilation system, environmental monitoring and monitoring system, gas geology and other influencing factors organically, detect hazards and identify hidden dangers, manage safety production process, Safety technology measures perform real-time monitoring and tracking. If the concentration of gas in the underground tunnel exceeds 1%, the gas probe will light up red and an alarm will sound at the same time. If the gas concentration reaches 1.5%, all lines in the well will be automatically shut down except when the fan does not stop working. Due to the use of coal mine gas monitoring systems, mine accidents have been relatively reduced. Therefore, the coal mine gas monitoring system has become the "guardian god" of coal mine safety.

Gas monitoring sensor Real-time monitoring of one of the most hazardous accidents in gas production in gas accidents. Gas accidents refer to gas (coal dust) explosions (burning), coal (rock) and gas outbursts, gas poisoning, and suffocation. Effectively curb the occurrence of gas accidents, which can rely on the gas safety monitoring system.

The gas monitoring sensor is installed in the high gas mine, and the coal mine gas monitoring and control network system is connected. The control centers at all levels can monitor and monitor the underground gas concentration in real time. Synchronizing the information will help the coal production authorities to keep abreast of the downhole gas. In case that the gas exceeds the limit, the automatic device will be disposed of according to the plan, and the on-duty personnel will also notify the relevant department to take corresponding measures. Through information methods to ensure safe production, change to a level of monitoring for multi-level synchronization monitoring, to minimize the accident rate.

The launcher was connected to the ground control center before going down. Workers were asked to put on clean uniforms, hard hats, searchlights, and oxygen bags. Each had a matchbox-sized launcher. The transmitter's signal is connected to the ground control center, and the control center can keep abreast of what is happening around the dangerous miners and take immediate action. A number of basket-shaped plastic containers filled with water are hanging at the top of the tunnel every 10 meters: in the event of an explosion, these devices will be broken and the stored water will help prevent the spread of the fire after the explosion.

Coal mine roof monitoring system to prevent roof fall, roof collapse and other accidents caused by roof fall is another major killer of coal mine safety operation. The coal mine roof pressure real-time monitoring system can prevent such accidents from happening. The system consists of a top plate pressure sensor, displacement sensor, hydraulic stress sensor and anchor stress sensor. These sensors are tightly “sticking” to the roof, rock formations and anchors, sensitively sensing downhole changes and real-time transmission. To the ground, the ground monitoring system constantly judges the various data transmitted. The biggest feature of this system is its extremely high sensitivity. It can monitor changes in data of coal seams as small as 1 mm and automatically alarm when it reaches 10 mm.

The video surveillance system guarantees that the coal mine operations under the coal mine are far away from the ground, the terrain is complex, and the environment is harsh. It is prone to accidents, and the accident rescue work is also difficult. Therefore, video monitoring of downhole operations is an important part of coal mine safety production. The coal mine video monitoring system can transmit downhole and borehole real-time images to the coal mine dispatching command center and the mine leadership office. This will enable the dispatch commanders and coal mine leaders to understand the production line situation intuitively and quickly, and to grasp the real-time conditions of the important equipment above and below the well.

With the security monitoring system, the ground or central monitoring personnel can directly monitor the downhole conditions, not only can intuitively monitor and record the safety production conditions at the underground work site, but also can detect accidental seedlings through the monitoring equipment installed downhole. Preventing problems beforehand can also provide relevant first-hand image data for post-mortem analysis of accidents, providing reliable assurance for future safety production. Even after an accident, the causes and locations of accidents can be analyzed through video recordings to enable trapped people to be rescued in a timely manner.

“The lesson of accidents is a question worthy of consideration. Before the accident, we can prevent people from doing anything to prevent them from happening, and to discover and stop the occurrence of mine accidents. After the accident, what security equipment do we have? Can we remedy the situation? In the future where life will continue, what can our security industry contribute to the safe production of coal mines?"

The underground communication system determines the specific location The underground communication system is also one of the necessary systems. It uses RFID wireless radio frequency and data communication to deal with the downhole operation conditions of coal and other mines, such as the risk of personnel separation, illegal operation, such as landslides, roof collapses, disappearances, and explosions. The real-time observation of the underground miners' construction conditions, timely detection of hidden dangers and exclusion of heterosexuality. At the same time, underground employees wearing GPS locators can accurately display the miner's downhole activity route and working hours. When a miner raises the well to work without raising the well, the system will automatically alarm and can record the specific location of the miner downhole in real time.

Alarm system The timely crisis early warning alarm system mainly relies on the monitoring of the air temperature and concentration of air components in the well. When reaching the limit value, an early warning signal is issued to remind the personnel inside the well of the danger of the current environmental operation, prompting the personnel to evacuate as soon as possible or to implement emergency measures. Protect the safety of the personnel in the well. Mine production brings huge profits while also testing the safety of coal mines. Profits cannot be sacrificed at the expense of the people's lives. In that case, they lose the significance of exploitation and production.

The main reason for the frequent mine accidents in China lies in the backwardness of our production technology, the widespread application of various advanced security technologies lags far behind the current speed of coal mining, and adds to people’s weak security awareness, negligence in safety management, and other causes. The tragedy was repeated again and again. It is hoped that all coal production companies will continue to sum up their experience and continuously increase the application of safety precautions. While improving management efficiency and enhancing people's safety awareness, they will also use the necessary high-tech equipment to do a good job of safety protection and improve the efficiency of relief.

Conclusion:

How to effectively monitor and prevent coal mine accidents and maintain the life safety of related personnel is an urgent issue to be resolved in China's coal mining. It is directly related to the safety of workers in the mining area whether or not the security hardware equipment in the mining area is up to standard. Of course, hardware protection is really only one of the parts, and the country’s legislation, regulations, and personnel safety awareness are all necessary improvements.