Rock Mass Stabilization
Protection from unconsolidated rock or rubble sliding down and of fault zones; in general implemented between interior construction and rock mass
Squeezing rock requires special measures allowing for the discharge of one-dimensional pressure loads into the surface.
- Stabilization and reinforcement in the back in tunneling (e.g. according to NATM (New Austrian Tunneling Method)
- Filling of the overcut between tunnel shell and rock mass, stabilization against rock pressure
- Combined sealing and stabilization in case of in-situ water
- Usually PU injections, often in combination with cement; reaction time and foaming behavior adapted to project
- Silicate resin injections also for stabilizing filling measures
- Silicate resin foams or acrylate gel curtains in case of loose, sandy ground
Rock mass stabilization entails void filling, anchor bonding, heading face stabilization, pre-excavation grouting and umbrella injection as superordinate measures and is combined with permanent sealing measures.