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通过分析巷道金属支架的腐蚀形态、机理、特点，采用选材和涂层的防腐措施。在模拟井下介质溶液中运用塔菲尔直线外推法测定金属的腐蚀速度，运用恒定电位法测定出其阳极极化曲线，选出制造金属支架的Ａ３ 、４５ Ｍｎ、２０ ＭｎＳｉＴｉ 材料中耐蚀性最佳材料为２０ ＭｎＳｉＴｉ，在２０ ＭｎＳｉＴｉ 上进行电弧喷锌、喷锌封闭、磷化、磷化封闭、涂漆等工艺处理。通过盐雾试验、浸泡试验、失重法选出喷锌耐蚀最佳厚度为０．２０ｍ ｍ 和耐蚀性最佳工艺为喷锌封闭处理。
By analyzing the corroded form, mechanism and characteristic of metal support in roadway, the anti-corrosion measures of material selection and coating are adopted. The corrosion rate of metal was measured by Tafel linear extrapolation in simulated downhole solution and the anodic polarization curve was measured by constant potential method. The corrosion resistance of A3, 45 Mn and 20 MnSiTi The best material for the 20 MnSiTi, 20 MnSiTi on the arc spraying zinc, zinc spray closed, phosphating, phosphating closed, painting and other processing. Salt spray test, immersion test, weight loss method to choose the best anti-corrosion zinc spray thickness of 0.20m m and corrosion resistance of the best technology for the zinc spray closed.