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|Title:||Anomalous buried hollows in London: development of a hazard susceptibility map|
|Keywords:||Buried hollows;Scour;Pingos;Rockhead anomalies;Engineering hazard|
|Publisher:||The Geological Society of London|
|Citation:||Quarterly Journal of Engineering Geology and Hydrogeology, 48(1): 55 - 70 (16), (2015)|
|Abstract:||Engineering works carried out in central London over many decades have revealed a number of buried hollows that exhibit curious characteristics. Some extend deep into the bedrock geology and are in-filled with disturbed superficial deposits and reworked bedrock. Others are contained within the superficial deposits. They can be up to 500 m wide and more than 60 m in depth. As the infill material often has different behavioural characteristics from the surrounding deposits failure to identify them during an initial site investigation can prove costly. This paper considers their common characteristics and describes the method used to develop a buried hollow hazard susceptibility map. This map provides planners with a broader awareness of the potential location of difficult ground conditions associated with them, thereby reducing the potential for unforeseen ground conditions through effective site investigation design. The paper continues with a discussion of some of the likely processes associated with their formation, which are attributed to cryogenic processes, and concludes with potential future research directions.|
|Appears in Collections:||Dept of Mechanical Aerospace and Civil Engineering Research Papers|
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