Risk Estimation of Groundwater Drawdown in Subsidence Sensitive Areas
Licentiatavhandling, 2016

Groundwater drawdown induced ground subsidence is a severe problem in many regions around the world. Leakage of groundwater into a sub-surface construction, resulting in drawdown and subsequent subsidence, can lead to immense damage costs on buildings and installations in urban areas. To reduce the risk for damages safety measures can be implemented. Safety measures include design change of the construction, sealing of fractures in bedrock and permeable formations in soil, and infiltration of water to maintain stable groundwater heads. However, such measures can be very expensive and extensive investigation programs are therefore commonly realized as a basis for decision support on the need for safety measures. Since the sub-surface consists of heterogeneous and anisotropic materials which cannot be investigated in its entirety, decisions on safety measures have to be taken under uncertainty. In this thesis, a generic framework is presented on how to assess the risk for groundwater drawdown induced subsidence (Paper I). As specific tools for modelling uncertainties in the groundwater drawdown – subsidence – damage chain, a method for probabilistic modelling of bedrock levels and soil stratification (Paper II) and a method for probabilistic modelling of ground subsidence at the city scale (Paper III) are presented.

uncertainty quantification

urban hydrogeology

pore pressure reduction

subsidence

geostatistics

groundwater leakage

soft soil

groundwater drawdown

spatial variability

settlement

probabilistic

risk assessment

HC1
Opponent: Prof. Bo Olofsson

Författare

Jonas Sundell

Chalmers, Bygg- och miljöteknik, Geologi och geoteknik

Styrkeområden

Building Futures

Ämneskategorier

Geoteknik

Vattenteknik

Miljöledning

Geologi

Lic - Department of Civil and Environmental Engineering, Chalmers University of Technology

HC1

Opponent: Prof. Bo Olofsson

Mer information

Skapat

2017-10-08