・The drain base plate of the MRT box is deepened by a reversible structure.
・Repair and strengthen the dragon-shaped sewer tunnel
In the sewer section of the Shizitou Sewage Pumping Station to the entrance to the Dragon Tunnel, many cracks in the tunnel are caused by the effects of earthquakes, which cause sewage and exhaust gases to escape and cause environmental pollution. Due to the harsh working environment, the company uses water and underwater structure repair technology and geological improvements over the tunnel to repair the sewage treatment tunnel structure to maintain environmental hygiene and safety.
・Drilling and grouting
・Repair pipes and general underground tunnels