Abstract
Coal burst continues to be one of the most catastrophic safety hazards faced by future mining as the stress environment will be more complicated with the increase of mining depth. Many chief coal mining countries including Poland, Czech Republic, the U.S., China, and Australia have experienced fatal accidents caused by coal burst and conducted comprehensive research on the driving forces and solving technologies related to coal burst. In this chapter, the research outcomes of the mechanism, risk evaluation, risk monitoring, and prevention of coal burst are reviewed, which is helpful for mining researchers and engineers to understand and control the safety hazards caused by coal burst, and, hence, to achieve sustainable and safe mining.
Highlights
Coal burst, which refers to the violent and catastrophic failure of coal, is a serious safety hazard for underground coal mines, and it has attracted intensive research interests from mining and geological scholars [1]
In 1738, the first recorded coal burst took place in England [2, 3]. Both the frequency and severity of coal burst increased with mining depth [2, 4, 5]
Mining depth has been identified as an important factor for the formation of coal burst
Summary
Coal burst, which refers to the violent and catastrophic failure of coal, is a serious safety hazard for underground coal mines, and it has attracted intensive research interests from mining and geological scholars [1]. In 1738, the first recorded coal burst took place in England [2, 3]. Since both the frequency and severity of coal burst increased with mining depth [2, 4, 5]. Extensive study has been conducted around the mechanism, prediction, and prevention of coal burst [5] by scholars around the world. Some necessary conditions of coal burst such as stiffness, dynamic load, and mechanical property are found based on previous decades’ research. Coal burst is the energy accumulation and releasing process of a coal body. Changing coal mechanical property is a promising method for coal burst mitigation. The coal burst driving forces, solving techniques, and monitoring methods are reviewed from energy aspects
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