CONSTRUCTION METHOD FOR DRILLING HOLE IN UNDERGROUND WALL

摘要

PROBLEM TO BE SOLVED: To provide a construction method which can prevent an underground wall from interrupting a stream of underground water, by drilling a through-hole passing through the underground wall, without exposing the underground wall to a place in which the through-hole is drilled. SOLUTION: This construction method has: an underground-wall creating process for creating the underground wall (W) by infilling a chemical agent (3) for crushing into the place (P) in which the through-hole (ϕa) has to be drilled; and a process for crushing the place (P) in which the through-hole (ϕa) is drilled in the underground wall (W) created by using the chemical agent (3).