At the Mont Terri Underground Research Laboratory (Switzerland), a field-scale investigation has been conducted in order to investigate the hydro-mechanical and chemical perturbations induced in the argillaceous formation by forced ventilation through a tunnel. this experiment has been selected to be used for processing model development and validation in the international project DECOVALEX-2011. the conceptual and mathematical representation of the engineered void, which itself forms a major part of the experiment and is not simply a boundary condition, is the subject of this paper. A variety of approaches have been examined by the contributors to DECOVALEX and a summary of their findings is presented here. Two major aspects are discussed. Firstly, the approaches for the treatment of the surface condition at the porous media/tunnel interface are examined, with two equivalent but differing formulations successfully demonstrated. Secondly, approaches for representing the tunnel with a...

发电业的快速发展趋势，对刀具业不断提出新的需求 近几年，全球发电业发展迅速。随着人们日益了解二氧化碳排放的后果，风电和核电作为清沽能源，毫无疑义地成为了发电行业普遍关注的重点，而即便是火电，也面临着需要变得更加清洁的压力。在中国，电力能源结构的调整趋势是：优化发展火电、安全高效发展核电、加快发展气电、大力发展风电，并且要大力发展新能源和再生能源。