Project Overview
In order to cooperate with the construction of the subway station, the pipeline needs to be permanently relocated to the east side of the current sewage. The 1.6×1.6 single hole digging is 500m in length and the cost is about 10 million yuan.
Initial lining construction
  | ![]() Earth excavation  | 
![]() Steel arch, mesh  |  Shotcrete | 
Waterproof construction
![]() waterproof  | ![]() waterproof  | 
Secondary lining construction
![]() template  | 
  | 
![]() Rebar  | ![]() Rebar  |