Key Technologies for Overall Construction of Ultra Deep Vertical Shafts
Vertical shaft construction belongs to vertical operation,with high construction difficulty and high safety risks.The depth of vertical shafts in hydropower projects is mostly within 200m,and construction from 200m to 300m is relatively difficult.If it exceeds 300m,it is generally necessary to set up support tunnels for segmented construction.Due to terrain and other limitations,it is difficult to implement segmented construction on site for some deep shafts,and only an overall construction plan can be adopted,which belongs to the scope of ultra deep shaft construction.Several key technical issues that need to be solved for ultra deep vertical shafts include slag discharge channels,personnel and material transportation,concrete conveying,as well as water seepage treatment and defogging.
ultra deep vertical shaftoverall constructionkey technologiesheavy direct transportation
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