It lays equipment to be used for tunnel radially to converge monitoring point

• Main Authors: WANG XIANGCAN, ZHANG BINRAN, YANG HAO, ZHOU ZHONG, XING KAI, ZHANG QIFANG
• Format: Patent
• Language: English
• Published: 18.11.2015
• Subjects: MEASURING; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS; MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS; PHYSICS; TESTING

The utility model discloses an it lays equipment to be used for tunnel radially to converge monitoring point, hang including the triangle annular and detain expansion bolts (hang and buckle) and brace wrench (including nut seaming, crank and handle) including iron sheet drum, rubber nut pad, nut and triangle annular. It is downthehole bore the horizontal cylinder protection of good certain degree of depth with corresponding bore water on the radial lateral wall in tunnel, bores good and triangle annular with the electric drill of corresponding model at its central point and hangs the horizontal aperture of detaining the expansion bolts equal diameter, hangs the triangle annular in a knot expansion bolts inserts the aperture, fixes its tighten nut with the brace wrench. The utility model discloses a triangle annular string knot expansion bolts has overcome opening fishhook shape expansion bolts commonly used and hung some nondeterminacy errors in the measurement, and the nut problem of fixing in the narrow space has been solved to the brace wrench, equips simple manufacture, and is easy and simple to handle, can lay the monitoring point effectively fast.