FSM - A Roof-Mounted 3D Fault Slip Monitoring Device
Underground fault slip due to excavation and other mining activities is often a major cause for ground instability. Monitoring the behaviour of rock structures is important to a mining operation. The mining industry needs an instrument which can detect the magnitude and direction of small ground movement, and is inexpensive and easy to install with no interruption to other operations. An unique 3D fault slip monitoring device has been developed to meet those requirements. A computer software has been developed for data processing.
The magnitude and direction of movement along the strike, the dip and the normal of the fault plane can be determined. The device has been calibrated using a fault-slip model in laboratory and the results show a good agreement between the measured and th e actual movements. It is a useful tool for measuring the shear movement underground.The complete FSM device includes the following components:
a). a set of FSM device field components
b). a readout device
c). a custom built template to facilitate field installation
d). a copy of computer software FSLIP3D for data processing
e). a copy of the Users Manual.
This instrument has the following features:
- High sensitivity
- Detecting slip & slip direction
- No borehole required
- Easy to install and monitor
- InexpensiveFSM can be installed on the back of any accessible underground openings or in a horizontal position on the walls of these openings. The installation is very simple and can be done by one person. No heavy equipment is necessary. The required installatio n equipment is a hand-held drill.
Readout Instrument
A modified Mitutoyo digital micro gauge is used to measure the small movement. An extension bar with a series of punctuated holes is available to reach extended range. This feature allows for measurement over a wide range of distances.
For further information, please :
contact Dr. Zou
back to the top go to Professor Steve Zou's home page