文章基本信息

标题：Assessment on the geological engineering properties of Riyadh’s carbonate bedrock (Saudi Arabia)
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作者：Manuel Cueto ; Manuel Cueto ; Luis Pando 等
期刊名称：Journal of King Saud University - Science
印刷版ISSN：1018-3647
出版年度：2022
卷号：34
期号：2
页码：1-11
DOI：10.1016/j.jksus.2021.101804
语种：English
出版社：Elsevier
摘要：AbstractNowadays global urbanization, increasingly trending towards megacities worldwide, is putting pressure on the underground environment. Consequently, a need to shed light on the metropolitan subsurface geology has arises. Different megacities around the world maintain large bibliographic repositories related to prior infrastructure construction projects, for example, metro projects which spread over entire urban areas. However, in fast growing cities like the capital of Saudi Arabia, the available technical and scientific literature regarding the city’s subsoil is scarce. This investigation shows the first full-scale geotechnical assessment of the Upper Jurassic - Lower Cretacic subcrop sequence found throughout Riyadh’s downtown region. It is based on data obtained during the investigation of Riyadh’s Metro Line 3 (41.6 km), the longest line within the largest metro project ever built from scratch and as a whole.The geotechnical testing protocol involved around 9 km of core-drilling with tests conducted inside the boreholes, collection of more than 900 samples of rock cores obtained to perform laboratory tests, and 42 km of multi-technique geophysical survey. This article provides data concerning ground properties based on the statistical evaluation of intact rock and rock mass scales. Considering the lack of pre-existing information, this paper could be useful when planning the design of future geotechnical investigations and projects spanning the city of Riyadh. Furthermore, this paper also provides empirical correlations which are usable to obtain indirect geotechnical parameters, applicable to other urban areas crossing frameworks similar to Riyadh’s subsoil.
关键词：Characteristic value;Geotechnical parameters;Intact rock;Mesozoic limestone;Rock mass