Framework for Value of Information Analysis in Rock Mass Characterization for Grouting Purposes
Artikel i vetenskaplig tidskrift, 2011

The observational method involves recurrent updating, and according to European standards, it is an optional method when geotechnical conditions are difficult to predict. A method for the application of value of information analysis in rock mass characterization for tunnels is demonstrated in a generic case of a feasibility study of a tunnel in hard rock. Two alternative grouting designs are analyzed to find the most suitable design for the geological conditions on site and whether information from investigations is of value in the decision-making process. The uncertainty in the grouting result is described by means of a beta distribution for each alternative design. The probabilities of different geological states are based on 200 stochastic simulations of the rock mass. It was found that value of information analysis contributes to good structure in geological surveys when the geology is difficult to predict and when repeated updating is necessary. The prescribed method is a tool to design well-motivated investigation programs where geotechnical value is weighed up against execution costs.

Geological surveys

Bayesian analysis

hydrogeological decision-analysis

data worth

Grouting

Tunneling

Författare

Miriam Zetterlund

Chalmers, Bygg- och miljöteknik, Geologi och geoteknik

Tommy Norberg

Göteborgs universitet

Chalmers, Matematiska vetenskaper, matematisk statistik

Lars O Ericsson

Chalmers, Bygg- och miljöteknik, Geologi och geoteknik

Lars Rosen

FRIST kompetenscentrum

Chalmers, Bygg- och miljöteknik, Geologi och geoteknik

Journal of Construction Engineering and Management - ASCE

0733-9364 (ISSN)

Vol. 137 486-497

Styrkeområden

Building Futures

Ämneskategorier

Samhällsbyggnadsteknik

DOI

10.1061/(asce)co.1943-7862.0000265