Small spacing tunnels has the characteristics of large-section, lower flat-ratio and poor surrounding rock stability and its stability is significantly influenced by seepage field. The Coupling effect of stress-seepage-damage on surrounding rock is obviously. According to this, the FEM calculation program based on elastoplastic stress-seepage-damage model of rock is estabilised. Back analysis program is compiled on the basis of the principle of differential evolution algorithmin order to solve the problem that elastopalstic damage model involves many parameters and not so easy to determine.

LOKASI: Ruang Koleksi Umum
Rak: 2