Vanadium seldom forms mineral deposit. It is mainly exist in vanadium titanomagnetite coal gangue and claystone.
钒一般很少单独形成矿床, 它主要赋存于钒钛磁铁矿、石煤矿、粘土岩中.
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Coupled unsaturated flow in claystone has high effect on strength and stability of underground engineering.
非饱和渗流、应力耦合行为是影响粘土类工程岩体的强度和稳定性的重要因素.
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