Abstract:The supporting method and effect of stope bottom structure is experimented and studied under the condition of soft and broken rocks in Tulargen Cu-Ni Mine. Based on the principle of modern supporting structure, the composite supporting technology scheme is put forward according to the ore-rock and practical conditions. Depend on the functions of roadway and its damage degree affected by the deep hole blasting, the targeted supporting method is selected. Through composite supporting technology to maximize self-bearing capability of surrounding rock, which can keep the stability of bottom structure under the action of supporting system and surrounding rocks. This kind of supporting technology can greatly increase the stability of roadway and reduced the supporting cost, which provided a strong guarantee for the mine’s safe and high efficient mining and given some technical references for the formation and supporting method of trench bottom structure in similar mines.