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List of products by author: W. S. Iyomasa
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Learned lessons from accidents on underground constructions in São Paulo city, Brasil
Abstract: In recent decades, the metropolitan area of São Paulo city faced a great number of large underground constructions; with them, some accidents raised questions about engineering solutions in use. The investigation of the factors involved in these accidents brought a great learning experience for professionals linked to the works, such as: the importance of geological and geotechnical most...
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Seismic Monitoring During the Excavation of a Shallow NATM Tunnel Using the Plasma Blasting Method
Abstract: This paper presents the results of a seismic monitoring data acquired during the excavation of a shallow NATM tunnel, performed using the plasma blasting technology. This tunnel was excavated under a thin coverage of soil, located in a dense urban area, under one of the most important avenues of the municipality of São Bernardo do Campo, Brazil. This scenario demanded a non-conventional rock...
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