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为研究边坡在AMD(Acid mine drainage)蚀化作用下动态稳定,从化学传质角度分析蚀化酸化行为,依据硫化矿石氧化机理,建立了蚀化动态酸沉降方程.通过蚀化产酸过程中岩体的酸中和能力ANC的测试,完成抗酸化容量AC的计算,实现边坡蚀化损伤动态评价.结果表明,其中水仓、水坑附近ANC达到-255 kg/t左右,AC几乎为0;靠近敏感矿体部分,抗酸容量较低,坡面ANC为-70~-56 kg/t,抗酸容量为0.012左右,酸沉降行为明显,岩体极易被腐蚀;远离硫化矿石体部分,抗酸容量较大,难于酸化,蚀化不明显.
In order to study the dynamic stability of slope under AMD (Acid mine drainage) erosion, the acidification behavior of the rock was analyzed from the perspective of chemical mass transfer. According to the oxidation mechanism of sulfide ores, the dynamic acid deposition equation was established. The acid neutralization ability ANC of medium rock body was tested to calculate the acidification capacity AC and realize the dynamic assessment of slope erosion damage.The results showed that the ANC near water tank and water hole was about -255 kg / t, AC almost Is 0; near the sensitive ore body part, the antacid capacity is low, the slope ANC is -70 ~ -56 kg / t, the acid-proof capacity is about 0.012, the acid sedimentation behavior is obvious, the rock body is easily corroded; Body part, antacid capacity larger, difficult to acidification, corrosion is not obvious.