Prevent drainage structures at bottom of tunnel of weak stratum

• Main Authors: FANG SHITAO, SUO XIAOHUA
• Format: Patent
• Language: Chinese; English
• Published: 23.11.2016
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; MINING; SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, ORDRAINING IN OR OF MINES OR TUNNELS

The utility model provides a prevent drainage structures at bottom of tunnel of weak stratum to prevent drainage problems at the bottom of solving weak stratum tunnel effectively, avoid appearing disease such as mud pumping at the bottom of the tunnel. Bearing plate and pile foundation including supporting tunnel floor, the pile foundation sets up with tunnel extending direction interval along horizontal, and concrete with the bearing plate on its top, and the lower extreme passes inverted arch filling layer, secondary lining to be pressed down and encircles section and initial stage supporting construction entering stability ground layer. Set up the water -swelling rubber sealing rod between each pile foundation and the inverted arch filling layer, the water -swelling rubber sealing rod is around pile foundation a week. Set up the escape canal under the tunnel floor, set up the transverse drainage blind pipe in water -swelling rubber sealing rod below, draw groundwater and arrange to the tunnel escape canal