Latest news for IBJ Technology 
Application possibilities of on-line rock pressure measurement with the tunnel construction(23/04/2009)
The instrumentation use of the akusto elastic effect makes qualitatively and quantitatively new safeguards methods possible with the building and with the enterprise of tunnel. When example of possible applications know tunnel-build with high overlays and/or large rock pressure features are called, with those already during the construction period, which can be measured force application of the working forces of the tunnel drilling machine into t... [more]
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