Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6447908 | Engineering Geology | 2013 | 17 Pages |
Abstract
The hydraulic conductivities from pre-drilling analysis are used for inflow prediction for the excavated tunnel. Compared to the small-scale (50 m) variations of hydraulic conductivity as derived from pre-drilling analysis the sampled volumes of long term tunnel inflows are at least one order of magnitude larger (> 500 m). This leads to very uniform steady state inflow rates of 500-1000 m long monitoring sections for cumulative tunnel inflows. These inflows range between 3 and 5 l/s·km and compare very well with the predicted tunnel inflows from geometric mean hydraulic conductivity as derived from pre-drilling analysis.
Related Topics
Physical Sciences and Engineering
Earth and Planetary Sciences
Geotechnical Engineering and Engineering Geology
Authors
Olivier Masset, Simon Loew,