The auxiliary shaft topsoil adopted ordinary construction and drainages in hygrometric well.
屯留煤矿副井井筒表土段采用普通法施工，利用井外降水井疏干降水。
The thesis presents the application of surface pre-grouting to construction of auxiliary shaft in Yangliu coalmine.
本文介绍了地面预注浆施工技术在杨柳煤矿副井中的应用。
Variety rules of concrete strain of outer shaft wall were carried out based on in-situ measurement during freeze sinking of Longgu Mine auxiliary shaft.
通过龙固副井冻结凿井期现场实测，获得了龙固副井外层井壁混凝土应变的变化规律。
应用推荐