HIGH PRESSURE INJECTION STIRRER HAVING DOWN-THE-HALL HAMMER AND HIGH PRESSURE INJECTION STIRRING METHOD USING THE SAME

• Main Authors: TSUTSUI KEISUKE, NISHIO KYO
• Format: Patent
• Language: English; Japanese
• Published: 16.08.2018
• Subjects: EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; SOIL SHIFTING; UNDERGROUND OR UNDERWATER STRUCTURES

PROBLEM TO BE SOLVED: To construct a modified body with larger diameter, for example, diameter φ 3-5 m than before.SOLUTION: A rod and a construction monitor are a completely independent triple tube structure consisting of an inner tube, a middle tube and an outer tube. The inner tube is a flow path for solidifying material slurry which communicates with a nozzle of the construction monitor. The middle tube is a down-the-hole hammer driving air flow path communicating with a drive section of a down-the-hole hammer. The outer tube is an air flow path communicating with the nozzle of the construction monitor, and functions as an air flow path for an improvement body formation, an air flow path for preventing clogging of an air nozzle for the improvement body formation, and an air flow path for preventing collapse of a boring wall. The middle tube and the outer tube are connected to a compressor via an air control flow path having switching means.SELECTED DRAWING: Figure 1 【課題】従来よりも大径、例えば、直径φ3〜5 mの改造体を造成すること。【解決手段】ロッド及び造成モニタは、内管、中管及び外管からなる、完全独立の三重管構造であり、前記内管は、前記造成モニタのノズルに連通する、固化材スラリー用流路であり、前記中管は、ダウンザホールハンマの駆動部に連通する、ダウンザホールハンマ駆動用エアー流路であり、前記外管は、前記造成モニタのノズルに連通するエアー流路であり、改良体造成のためのエアー流路、改良体造成用のエアーノズルの詰まり防止用のためのエアー流路及び削孔壁の崩壊防止用のエアー流路として機能し、前記中管及び外管は、切替え手段を有するエアー制御流路を介してコンプレッサに連結されている。【選択図】図１