万福矿井副井井筒掘砌技术探讨
Shandong Industrial Technology（2019）
Abstract
万福矿井副井井筒直径7.0m,井深894.368m,冻结深度840m,其中井筒实际揭露穿过表土层厚度为754.96m,井筒表土最大荒断面118m2,是目前世界上穿过表土层最深的井筒,建井难度为世界之最.外壁崛砌一次性穿越超大井径超深厚表土层754.96m,刷新了该领域的世界纪录,并获得大世界基尼斯之最的认证.
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