Property attribution of 3D geological models in the Thames Gateway, London : new ways of visualising geoscientific information

摘要

Rapid developments in information technology and the increasing collection and digitisation of geological dataudby the British Geological Survey now allow geoscientists to produce meaningful 3D spatial models of theudshallow subsurface in many urban areas. Using this new technology, it is possible to model and predict not onlyudthe type of rocks in the shallow subsurface, but also their engineering properties (rock strength, shrink-swelludcharacteristics and compressibility) and hydrogeological properties (permeability, porosity, thickness of theudunsaturated zone or the likelihood of perched water tables) by attribution of the 3D model with geologicaludproperty data. This paper describes the hydrogeological, engineering and confidence (uncertainty) attribution ofudhigh resolution models of the Thames Gateway Development Zone (TGDZ) east of London UK and proposes audfuture in which site investigation sets out to test a pre-existing spatial model based on real data rather than audconceptual model.