Adit

TL;DR: In this article, an intensive sampling of acid mine drainage from adits draining the abandoned copper and sulphur mines at Avoca, south-east Ireland, has confirmed a seasonal variation in the Zn:Cu ratio observed previously.

TL;DR: In this paper, a case study of the use of yield control support systems for tunnelling in difficult conditions is presented and numerical analyses are discussed to compare the results of computed and measured performance of a typical monitored section and to find out possible optimizations of support system adopted.

TL;DR: In this paper, the impact of past mining activities on the quality of groundwater was investigated in SW Sardinia (Italy) and the results indicated that more attention needs to be paid to the impact on the streams from contaminated water flowing out from some mine areas because during the dry season these streams are only fed by mine groundwater.

TL;DR: In this article, the authors present the monitoring data collected over a period of five years from January 2006 to December 2010, during which the Saint Martin La Porte access adit of the Lyon-Turin Base Tunnel was excavated through a Carboniferous Formation, a highly heterogeneous, overstressed and in cases anisotropic rock mass exhibiting a squeezing behaviour.