Interaction of engineering geology and geomechanics
Published:January 01, 2016
In June 1992, five large rock caverns were unearthed in a village near Longyou County in Zhejiang Province, south China. The caverns were manually excavated about 2000 years ago in argillaceous siltstone of Cretaceous age. Faults are not well developed, however there are clay interlayers within argillaceous siltstone bedding at each cavern. Field investigations suggest that the ancients had realized the influence of the clay interlayers on the stability of caverns and altered their location and layout accordingly. Several preserved trial adits at the site are good evidence of this conclusion. These adits are apparently abandoned due to the presence of clay interlayers. This is probably the earliest known use of geological exploration by adit methods, an approach now widely used. In this paper, the engineering geological conditions, especially the development of the clay interlayers, are presented in some detail. Statistical analysis shows that the numbers and average thickness of clay interlayers in the five completed caverns are less than those in other outcrops. It is concluded that trial adit methods and experience by geological observation were adopted by the ancients 2000 years ago in the excavation of underground rock caverns.
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Developments in Engineering Geology
Developments in Engineering Geology is a showcase of the diversity in the science and practice of engineering geology. All branches of geology are applicable to solving engineering problems and this presents a wide frontier of scientific opportunity to engineering geology. In practice, diversity represents a different set of challenges with the distinctive character of the profession derived from the crossover between the disciplines of geology and engineering. This book emphasizes the importance of understanding the geological science behind the engineering behaviour of a soil or rock. It also highlights a continuing expansion in the practice areas of engineering geology and illustrates how this is opening new frontiers to the profession thereby introducing new knowledge and technology across a range of applications. This is initiating an evolution in the way geology is modelled in engineering, geohazard and environmental studies in modern and traditional areas of engineering geology.