Managing geological risks in underground works: a way of identifying potential hazardous events
During the design of underground works, managing geological risks is becoming an increasingly important issue. As an illustration of this concern, the French Tunnelling and Underground Space Association (AFTES) published a guideline in 2012. The aim of this recommendation is to outline the methodological approach which considers that geological risks stem from uncertainties that have not been taken into account during the design phase. These uncertainties create potential geological hazardous events. The likelihood and consequences of these events must then be assessed when performing a risk management. Users of this methodology can encounter problems identifying these geological hazardous events, which is the first step of risk management. It is even more difficult not to forget a single one. In order to cope with these difficulties, the French Center for Tunnel Studies (CETU) has developed guidelines on how to efficiently and exhaustively identify all geological hazardous events. These guidelines can be summarized in a table which has to be read in two ways: the first way uses geological, hydrogeological and geotechnical parameters as a starting point to identify hazardous events. Because some events could be missed if all parameters have not yet been defined, a second step consists in considering and evaluating all hazardous events encountered in underground. This ensures that the risk register, which is the final product, is well suited to the geological context and the tunnel design. The article firstly presents CETU’s guidelines by showing the summary table and then provides examples to demonstrate its efficiency.
J. Kasperski C. Gaillard
Centre d(E)tudes des Tunnels (CETU) 25 avenue Fran(c)ois Mitterrand, case n°1, 69674 BRON Cedex, France
国际会议
西安
英文
226-233
2016-05-25（万方平台首次上网日期，不代表论文的发表时间）