geogage | V.W Rock Bolt

V.W. Rock Bolt is used to measure the axial force allowed in rock bolt to reinforce the rock during excavation at underground such as a tunnel, a communication duct, and a common utility duct.

Measuring axial force delivered to rock bolt, decide effective depth, quantity of rock bolt and install more or not.

Once load is made due to movements, relaxation, and joints of rock bases, an anchor body is slightly strained by axial force. Then it is delivered to V.W. Strain Gage which is attached to the anchor and measured the strain.

V.W. Rock Bolt is used to measure the axial force allowed in rock bolt to reinforce the rock during excavation at underground such as a tunnel, a communication duct, and a common utility duct. Measuring axial force delivered to rock bolt, decide effective depth, quantity of rock bolt and install more or not.

V.W. Rock Bolt is designed to measure precisely axial force allowed on rock bolt which is installed to reinforce the rock in construction field working at underground such as a tunnel, a mine and a hangar, communication duct, and a common utility duct.

Model	RT400
Type	Vibrating Wire
Range	Approx. 170 KN
Accuracy	±0.1% full scale
Operating temperature	-20℃ ~ +80℃
Dimensions	OD 27mm Length 2,3,4,5 M Measuring points : 2,3,4,5P
Borehole size for installing	Approx. 38mm