井筒特点:
副井井筒设计净直径为φ6.0m,井筒全深1118.997m,设计表土及风化基岩段为冻结法凿井,冻结深度275m,冻结段支护至壁座深度267m。X=39478700.000,Y= 3868065.000,Z=+37.8m。
井壁结构为:
冻结段设计为内、外双层钢筋砼井壁,+37.8m~+31.8m段为锁口段;+31.8m~-112.2m段内、外层井壁支护厚度分别为500mm,砼标号C30~C40;-112.2m~-221.2m段内、外层井壁支护厚度分别为650mm、550mm,砼标号C40~C50;-221.2m~-229.2m为整体浇筑段段,井壁支护厚度为1200mm,砼标号C50;-229.2m~-249.2m为井壁支撑圈,井壁支护厚度为800mm,砼标号C50;+31.8m~-221.2m段内、外层井壁间铺设两层高密度塑料薄板,单层厚度为1.5mm;-62.2m~-177.2m段外层井壁外铺设聚苯乙烯泡沫塑料,厚度为50mm。