Study of support types for deposits in contact with serpentines: Ait-Ahmane site

Purpose.The purpose of this paper is to study the characteristics carbonate serpentines present at level Ait Ahmane site (Bou Azzer Mine, Morocco). Empirical methods are suitable for analyzing their behavior and determining dimensions support types. Methods. The rock mass different structures mentioned in categorized using empirical such RMR, Q-system AFTES classifications. Findings. It has been found that use quality method (Q-system) extremely effective mining mass, based on simulated statistical results obtained approaches. Originality. equivalent gallery, stress state in-situ after operations, as well height overburden all important factors gallery stability. Practical implications. approach creates a strengthened structure optimal. In addition, research will be useful starting point geotechnical engineers when designing planning systems tunneling under high conditions very friable rocks.