关键词: 工程地质特征, 断裂, 采矿, 阳山金矿, 甘肃省

Abstract:

Division of rock engineering geological petrofabric，engineering-geology characters and stability of roof and floor rocks are analyzed in order to solve the problem which would be met in discussing the engineering-geology character of Yangshan mining area and mining.The result，combining the rock physical and mechanical properties test research，shows that petrofabric in this area can be assorted into four kinds，soft and weak ones，soft ones，hard ones and adamantine ones.The orebody can be affected by the structural belt in its formation，so the rock is fragmentary，the stability of orebody is poor，and engineering geological incident might be often.And the result shows that mining conditions in this area is complex.Problems that might exist during mining process and the solutions are put forward by analyzing the mining area in different conditions.

Key words: engineering-geology character, fracture, mining, Yangshan gold mine, Gansu Province