UNDERGROUND PROTECTION WALL GROUTING PACKER DEVICE FOR PREVENTING POLLUTED WATER FROM FLOWING INTO AN UNDERGROUND WELL AND A GROUTING METHOD THEREOF

摘要

An underground protection wall grouting packer device for preventing polluted water from flowing into an underground well and a grouting method thereof are provided to seal the space between a well wall and the packer device tightly by installing a rubber tube to the packer device. An underground protection wall grouting packer device for preventing polluted water from flowing into an underground well(1) comprises a contraction unit(11), a rubber tube(30), and a safety unit. The contraction unit contracts due to external force, as entering the underground well. The rubber tube wraps the contraction unit to seal the clearance between a well wall and the packer device. The safety unit includes a locking plate, a safety pin(24), and a pulling wire(25). The locking plate is rotative on inner and outer contraction tubes. The safety pin passes through the locking plate and a pressing ring and prevents the contraction unit from contracting. The pulling wire is connected with the safety pin to allow a worker to pull the safety pin.