Grouting pipe for foundation reinforcement

• Main Authors: SONG LIPING, REN YUEQIN, CHEN HONGJIE, LI QI, LI XIAO, ZHU QUANBING, HUANG CHAO, WU ZONGLIN, HU HAIMING, ZHOU JIANHUI, WU CHUANYI, XU YUEBIN, ZHANG YULIN, SONG CUIRONG, QU JIAJUN, MENG QINGMING
• Format: Patent
• Language: Chinese; English
• Published: 03.07.2020
• Subjects: EMBANKMENTS; EXCAVATIONS; FIXED CONSTRUCTIONS; FOUNDATIONS; HYDRAULIC ENGINEERING; SOIL SHIFTING; UNDERGROUND OR UNDERWATER STRUCTURES

The utility model discloses a grouting pipe for foundation reinforcement in the field of geotechnical engineering, which comprises an outer casing connected with a grouting pump and an inner core connected with a drill bit, the outer casing is hollow, and the inner core is in clearance fit with the inside of the outer casing. Wherein the inner core comprises a body part and a tail part, a spiral curve type groove is formed in the circumferential direction of the body part, the groove is filled with steel balls which are tightly arranged, the tail end of the groove is gradually contracted, thediameter of the tail end is smaller than the radius of the steel balls, the radius of the steel balls is larger than a gap between the shell and the inner core, and the tail part is used for being externally connected with a drill bit. When grouting liquid in the grouting pump flows through the steel balls, the closely-arranged steel balls generate resistance to the grouting liquid, due to the fact that the interiors of t