Advanced technology of soil conditioning in EPB shield tunnelling

摘要

The Earth Pressure Balance (EPB) shield method is well known in the tunnelling world, but there are still unexplained processes which require more understanding. This concerns particularly the different existing conditioning additives, their functions and their use on site. An important factor is the control of the corresponding key factors to obtain the desired conditioning and in the same time a quick TBM advance without any mayor problems.