Application of pouring copper steel contact shoe to ferroalloy electric arc furnace 铜钢浇铸式铜瓦在铁合金电炉上的应用
When the secondary lining of the lead tunnel is pouring full-face and the latter tunnel's follows, the bottom leave and the settlement of arc crown decrease, the horizontal convergence increases and the stability of surrounding rock is intensified. 二次衬砌分先后洞全断面一次浇筑时,围岩的底板隆起和拱顶沉降减小,边墙水平收敛增大,围岩稳定性增强。