In ancient China, there was a scientist named Zhang Heng.

Legend has it that he invented an instrument

Call it a seismograph

Where is an earthquake about to occur

The seismograph will issue a warning

Ground motion sensors on coal mines

Has always been a dream for coal industry personnel

Developed by China University of Mining and Technology

Intelligent comprehensive monitoring and warning system for rock burst pressure

It has been converted and applied in multiple coal mines in China

Known as the "coal mine seismograph" by the mining industry

also

And go abroad

Starting to contribute to all humanity

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When the clock was set back to 1911, all coal mines in Britain were equipped with canaries, which served as a "warning". This type of bird is particularly sensitive to toxic gases such as carbon monoxide that are difficult for humans to detect. Whenever a fire or explosion occurs in the mine, rescue workers will bring the canary into the underground. Once the canary shows an uneasy reaction, rescue workers and miners receive a danger signal and immediately evacuate.

This warning plan lasted for 70 years until 1986, when it gradually bid farewell to the miners.

Preventive measures are the top priority of all measures. From this perspective, the early warning system is a more important guarantee for coal mines.

Disaster detection accuracy reaches 90%

China is a country with more Coal mining in the world, and also a country with more serious rock burst disasters. According to statistics, there are currently 329 rock burst mines in China, and 253 are currently being mined. Coal mine rock burst not only poses great harm to itself, but also induces major disasters such as abnormal gas emission and gas explosion.

In recent years, with the increasing depth and intensity of coal resource mining, rock dynamic phenomena such as rock burst have become increasingly severe, and rock burst has become one of the main disasters faced in the field of deep resource mining. Dou Linming, a professor at China University of Mining and Technology, said: "The deeper the coal mine is mined, the greater the mine pressure is. Generally, if the mining depth exceeds 400 meters, there is a danger. The danger factor is relatively high when the burial depth is 1000 meters. At present, the deeper the coal mine in China has reached 1500 meters underground."

Fortunately, in the face of this "unfamiliar pressure", there are already ways to "alleviate" it. After the scientific research achievements of China University of Mining and Technology have been applied in many coal mines, the above accidents can be avoided.

On May 11, 2008, the system successfully tested and detected abnormalities in the working face of Huating Coal Industry Group Co., Ltd. located in Gansu.

Previously, rock burst monitoring was basically impossible, and through our research, the accuracy of monitoring can reach 90%. Currently, we can predict the danger, location, approximate time, and intensity of rock burst, "said Dou Linming.

In 2013 and 2014, the State Administration of Production Supervision and Administration and the Coal in China Association organized technicians to appraise the achievements of the "Research on time-space monitoring and early warning technology of microseisms caused by coal mine pressure" and "CT prediction principle and technology of coal mine pressure shock waves" developed by China University of Mining and Technology, all of which have reached the industry priority.

Target by the end of the 13th Five Year Plan: Coal mines reaching over 90%

Technology promotion has become a consensus in the entire industry, and major related enterprises are actively carrying out work in this area. The "Huake Electric KT190 Coal Mine Broadcasting System" developed by Jinan Huake Electric Mining Equipment Company mainly focuses on "information transmission". Its important feature is the ability to transmit information to every corner of the mine at the moment of danger, thereby ensuring the life of every miner to a greater extent.

At the just technical "Seminar on Key Technologies of Smart Mine Construction and Promotion of Smart Mine IoT Operating System Platform", the sponsor Coal in China Association put forward a vision: "Accelerate the construction of quality standardization of coal mines, improve the production guarantee capacity of coal mines, and reach more than 90% of coal mines with quality standardization level of more than three levels by the end of the 13th Five Year Plan."