Recent research has shed light on a pressing issue in the mining sector: the rupture of super-thick key strata, a phenomenon that poses significant risks for dynamic disasters in mines. Led by Weibing Zhu from the School of Mines at the China University of Mining and Technology, this study delves into the complexities of non-uniformly thick “bow-shaped” strata, particularly in the Binchang mining area of Shaanxi. The findings, published in the journal ‘Meitan xuebao’ (Journal of Coal Science and Engineering), provide critical insights into how these geological formations influence mining operations and safety.
The study reveals that the unique morphology of these “bow-shaped” strata contributes to abnormal stress concentrations in the coal rock mass below, which can lead to catastrophic rock bursts. “In the convex area beneath the ‘bow-shaped’ formation, we observed an exceptional concentration of high stress, increasing the coal rock body stress by an additional 22.1 MPa,” Zhu explains. This heightened stress can elevate the risk of rock bursts, particularly in pillar and roadway areas where mining activity is most intense.
The implications of this research extend beyond theoretical understanding; they have tangible commercial impacts for the construction and mining sectors. By identifying the mechanisms behind these dynamic loads, the study offers a method for predicting disaster risks, which could significantly enhance safety protocols and operational efficiency in high-risk mining areas. “Our findings not only clarify the influence of geological formations on mining operations but also provide a framework for disaster prevention and control,” Zhu adds.
As the mining industry continues to push deeper into the Earth, understanding the behavior of rock strata becomes increasingly crucial. The insights gained from this research could lead to the development of more resilient mining practices and technologies. By adopting predictive measures based on Zhu’s findings, companies can mitigate risks associated with rock bursts, ultimately safeguarding their workforce and investments.
In an era where safety and efficiency are paramount, this research marks a pivotal step forward. The connection between the rupture of super-thick key strata and the generation of dynamic loads has been validated through distributed fiber optic field measurements, reinforcing the study’s credibility. As the industry evolves, findings like these will be instrumental in shaping future developments, ensuring that mining operations can proceed with greater confidence and reduced risk.
For further information on this research and its implications, you can visit the School of Mines, China University of Mining and Technology.
