Following factors need to be considered to develop a protocol for slope monitoring
1. Site applicability of different deformation monitoring instrument
2. Man and machinery exposure limit
3. Accessibility of the site for installation of monitoring device
4. Young modulus of the rock type
5. Brittleness/ ductileness of the rock-
6. Orientation of joints and other structures
7. Geometry of the slopes
8. Time of slope exposure
There are some wrong concepts in Indian mining industry regarding this, which are-
Before preparing a methodology to develop the protocol for early warning system we need to cross the boundaries which can trail us towards confusion. Those boundaries are actually some wrong concepts which are forcing miners not to implement geotechnical instrumentations for slope stability; across the country. The wrong concepts are—
1. Accuracy is the ultimate factor regarding selection of monitoring instrument
2. Conventional method of monitoring and other monitoring system is not required if we install ground based radar
3. Cost of radar is very high
4. Mine Management can be in relaxed mood because radar will detect and predict failure
5. Always inverse velocity method will be applicable to determine TOF
6. Geo-technical slope failure and slope collapse is same
7. Radar will always give accurate deformation data