Abstract:
In order to address the problems of routine mortar anchoring, a grouting system with screw rod, packer, and air exhaust pipe was designed to allow monitoring of the injection pressure. Simulation tests and field practice indicated that the system is convenient and is reliably able to accomplish pressurized full-thread anchor bolt grouting without losing or leaking grout. With this kind of anchor bolt, it is possible to install accessories and obtain good grouting results compared to those of routine mortar anchor bolts.
XIE Zhi-Ping-1,
2 ,
WU Hang-1 etc
.Research On Special Pressure-circulation Tunnel Grouting and Anchoring Devices and Construction Technology[J] MODERN TUNNELLING TECHNOLOGY, 2011,V48(4): 162-166