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List of products by author: H. Murayama
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Application and geotechnical verification of the time domain electromagnetic method to a gneiss tunnel site
Abstract: The time domain electromagnetic method, TDEM, was conducted to estimate the geological condition and structure on a gneiss tunnel construction site in the Aichi Prefecture, Japan. Three dimensional distribution of resistivity were obtained by plural three measuring lines with TDEM and geological distribution and geotechnical problems were inferred. This paper described the estimation results of...
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Availability of evaluating ground condition using geophysical exploration in mountain tunnels
Abstract: Recently, continuous ground displacements have resulted in damage to the lining of, or floor heaving in several Japanese tunnels. Since there is no diagnostic method for these longterm ground deformations, a technical method for evaluating the health of ground is needed. A diagnostic method is required that uses a standard index to evaluate the ground condition continuously from construction...
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Project study of tunnels with time-dependent behaviour - Records of planning and construction
Abstract: Recently, the maintenance of the aging infrastructures has become a more serious social issue in Japan. It would be ideal if the social aging infrastructure could be to be repaired and maintained in an efficient manner. The authors selected a pair of the road tunnels as the study area in order to develop estimation methods for tunnels with time-dependent behaviour of the rock around the tunnel....
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Project study of tunnels with time-dependent behaviour -A diagnostic method using seismic velocity
Abstract: Recently, continuous ground degradations with a time-dependent behaviour have led to damage of the linings or floor heaving in several in-service tunnels. These time-dependent deformations in tunnels may cause serious social and economic losses. However there is no diagnostic method and a new method is needed to assess these time-dependent behaviours of rock mass behind tunnel lining until its...
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Project study of tunnels with time-dependent behaviour – Geochemical and mechanical characteristic of rock mass
Abstract: In the present research, tunnel geological conditions and mineralogical properties of rock are analysed on the basis of the tunnel construction record with the occurrence of time-dependent deformation. The geology of the studied tunnel is mainly andesitic lava, dacite that includes auto- brecciated lava and pyroclastic rock, all of which have undergone hydrothermal alteration. As the results of...
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