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List of products by author: H. Yamamoto
Development and Application of Cableless Seismic Survey System in Mountain Tunnel
Abstract: A cableless seismic exploration system that can be used in the construction of mountain tunnels for quantitative rock condition evaluation near the tunnel face and investigation in front of the tunnel face was developed. The system requires no cable for the exploration and its simple system configuration achieves high-precision exploration in a tunnel construction...
10,00 €Long-Term Experimental Assessment of the Water-Tightness of Gasket with Hydrophilic Sealant under High Water Pressure
Abstract: Tunnel construction with segmental linings (shield tunnels) under extremely high water pressure, such as those at a great depth or underneath the seabed or both, has been increasing. In those tunnels, significant water infiltration at the joints of segmental linings could be a serious problem and lead to a catastrophic event. Water-tightness at segmental joints is also important to ensure the...
10,00 €Seismic survey using excavation blasting under tunnel construction – TFT Survey at road tunnel construction in Japan
Abstract: TFT survey using “Tunnel Face Tester” is a measurement method to be able to record arrival time and wave form of seismic wave occurred by an excavation blasting without interruption of tunnel excavation work. TFT survey is able to evaluate geological condition around a tunnel face using direct waves. At the same time, this is able to predict geological change, for example fault or frac- ture...
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