Skidding type hole enlarge annular tube following drill jig

The utility model discloses a novel drilling tool for pre-grouting and reinforcing of the large steel pipe shed of the underground engineering such as the tunnel. A sliding type casing and drilling tool for hole reaming comprises a guide body (3), a casing (5) and a drill rod (7). The utility model...

Full description

Saved in:
Bibliographic Details
Main Authors ZHANG ZHAOLIANG, WANG KAIKANG, WEN XIANGDONG, YU DINGZHENG
Format Patent
LanguageChinese
English
Published 06.02.2008
Subjects
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
FIXED CONSTRUCTIONS
GALLERIES
LARGE UNDERGROUND CHAMBERS
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
SHAFTS
TUNNELS
Online AccessGet full text

Cover

More Information
Summary:The utility model discloses a novel drilling tool for pre-grouting and reinforcing of the large steel pipe shed of the underground engineering such as the tunnel. A sliding type casing and drilling tool for hole reaming comprises a guide body (3), a casing (5) and a drill rod (7). The utility model is characterized in that the drilling tool also comprises a reaming slider (1) and a guide drill (2), a plurality of symmetric sliding slots is positioned at the head of the guide drill (2), and the reaming slider (1) can slide in the sliding slot. The drilling of the large steel pipe shed hole and installation of the casing can be done in one-step during the construction of the large steel pipe shed. The utility model has the advantages of rapid construction speed, high work efficiency, completion rate of hole at 100 percent, convenient and reliable operation, easy fabrication, lower cost than that of the existing eccentric reaming and drilling tool, wide application scope, not only being used in the construction
Bibliography:Application Number: CN20072103397U