Case Study | Earthquake Prevention and Disaster Reduction-Earthquake Monitoring System for Coal Mines
Oct 20,2025
Recently, Liaoning TV reported on the important achievements of the Liaoning Provincial Seismological Bureau in establishing a non-natural earthquake monitoring system through scientific and technological innovation. A dense mobile monitoring array composed of our company's UGL-3C short-period 4G seismometers, as the core of this monitoring system, plays a key role in the precise location of mine tremors and earthquakes, providing strong technical support for safe mining and disaster prevention in mining areas.
Traditional earthquake observation models rely on fixed stations. Due to the large spacing between fixed stations (tens or even hundreds of kilometers), the location accuracy of mine tremors and earthquakes cannot meet the actual needs of mine earthquake monitoring. However, a dense monitoring array based on short-period node seismometers can more precisely characterize the distribution characteristics of mine tremors and earthquakes within a specific range, which is of great significance for mine earthquake monitoring and rock burst control.
The Daqiang Coal Mine of the Tiefa Coal Industry Group, as the pilot unit for this research, was the first to set up a dense array of 64 UGL-3C node seismometers within its coverage area. This allows for precise location of mine earthquakes and achieves a "CT-like" scan of the mine's underground structure. By deploying these monitoring technologies in a denser spatial configuration, the accuracy of mine tremors and earthquakes has been reduced from the kilometer-level error of traditional networks to the ten-meter level. This significantly enhances the ability to identify microseismic and weak earthquake signals within the region, enabling 24-hour real-time dynamic monitoring and providing all-weather assurance for safe mining operations.
By combining these monitoring technologies with anti-vibration and shock-mitigation measures such as grouting and softening, researchers have achieved "source-directed" control of adverse events such as mine tremors and rock bursts, effectively controlling the frequency and magnitude of these tremors. Furthermore, rock tunnels have been constructed above the working face to reduce the energy transmitted to the working surface, maximizing the safety of underground personnel. For example, after targeted treatment, the maximum mine tremor level detected in a working shaft at Daqiang Coal Mine was reduced from 3.3 to 2.1, with the energy transmitted to the working face reduced by over 98% compared to before the treatment.
The successful establishment of this non-natural earthquake monitoring and rock burst control system marks a new milestone in the application of our company's earthquake monitoring equipment in the field of energy and resource security. In the future, we will continue to work closely with earthquake monitoring departments and energy companies, use technological innovation to support disaster prevention and mitigation, and contribute professional strength to building a safe and efficient production environment.
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