PURPOSE: To make it possible to eliminate completely slime by sealing and fixing a pipe provided in a boring hole and a drill inserted thereinto, and sealing and bearing the drill pipe and a discharge pipe to provide an end open means and jet device.
CONSTITUTION: A boring hole H is excavated, and a drill pipe 2 is pulled up to a position necessary for washing of a hole wall, and the drill pipe 2 and a guide pipe 1 are sealed and fixed by a sealing and fixing device 3. After that, a discharge pipe 8 is inserted into the drill pipe 2, a discharge head 12 is mounted to the drill pipe 2, it is sealed and born on the drill pipe 2 by a sealing and bearing device. Then, a ball 16 is put into the discharge pipe 8, compressed air and water are supplied from the discharge head 12, those matters are jetted from jet holes 18... to wash the hole wall. Water is poured from an injection and discharge port 11 to fill the inside of the hole with water, and compressed air is supplied to discharge muddy water slime from the discharge head 12.
| JPH0747917 | PROBLEM TO BE SOLVED: To drill a hole for an underground anchor and a drilling device. |
| WO/2023/128842 | DOWN-THE-HOLE HAMMER |
| WO/2016/074025 | DUAL CIRCULATION FLUID HAMMER DRILLING SYSTEM |
SUZUKI SHIRO
HASEGAWA YUTAKA
HASHIMOTO AKIRA
IGARASHI HIROSHI
KUROSAKA KENJI
SUZUKI KAZUO
TAKENAKA DOBOKU
RAITO KOGYO KK
NITTOC CONSTRUCTION