Drilling tool for two-way soil-cement mixed pile

• Main Authors: LIU SONGYU, SUN ZHUPING, DU GUANGYIN, YANG YONG, SHI XINMING, XU XIONG
• Format: Patent
• Language: Chinese; English
• Published: 20.06.2012
• Subjects: EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; SOIL SHIFTING; UNDERGROUND OR UNDERWATER STRUCTURES

The invention relates to a drilling tool for a two-way soil-cement mixed pile. The drilling tool comprises an inner drilling rod, an outer drilling rod, an inner drilling bit and an outer drilling bit, wherein a water gas injection device is arranged at the upper part of the outer drilling rod, a ca...