2024
DOI: 10.1007/s12665-024-11505-5
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Failure characteristics of thick hard roof stratum under hydraulic pre-splitting and its application in a coal mine, Dongsheng mining area

Jingzhong Zhu,
Wenping Li,
Bo Teng
et al.

Abstract: Due to the presence of the hard suspended roof, it cannot collapse naturally after being mined in a large-scale goaf. If the roof suddenly destroys without human intervention, it would cause serious disasters. In this paper, we discuss the mechanisms and applications of hydraulic fracturing in alleviating the potential for catastrophic disasters. After the fracturing crack propagation principle, we investigate the failure and stress characteristics of overburden with and without fracturing, taking a mine in Do… Show more

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