Water Inrush in Mines as a Consequence of Spontaneous Hydrofracture
V. N. ODINTSEV, N. A. MILETENKO
Research Institute of Comprehensive Exploitation of Mineral Resources-IPKON, Russian Academy of Sciences, Kryukovskiy tupik 4, Moscow, 111020 Russia
Keywords: underground excavations, underground water, water inrush, hydrofracture, numerical modeling
Abstract
The authors review water inrushes in mines as a consequence of spontaneous hydrofracture of surrounding rocks. In the developed hydrofracture model, the fracture grows under the pressure of underground water in the area of reduction in mining-induced stresses. The model includes two criteria of fracture growth-critical extension of rocks at the fracture tip and opening of fracture throughout the length. It is found that spontaneous hydrofracturing is conditioned by natural and induced stresses, hydrostatic pressure of underground water and by mining sequence.
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