Bering work method using the hole in the cleaning for Bela, and a hole in the cleaning for Bela

摘要

PROBLEM TO BE SOLVED: To provide a hole inside cleaning bailer and a bailing work method using this hole inside cleaning bailer, capable of preventing damage of a casing constructed in an excavated hole as a well or the like, in bailing work.SOLUTION: A hole inside cleaning bailer 10 cleans the inside of a casing 2 constructed in an excavated hole, and comprises a tubular bailer body 11 inserted inside the casing 2 and a cushioning member 20 for preventing the bailer body 11 from contacting with an inner surface of the casing 2, In the hole inside cleaning bailer 10, the cushioning member 20 is a member projected from an outer peripheral surface of the bailer body 11 and being softer than an inner surface of the casing 2.