Research on the Supporting Effect of Inclined Shaft Simulation Based on FLAC 3D Principle
[Purposes]The inclined shaft is between the flat port and the shaft,and the structural stress has certain complexity.Therefore,it is particularly important to study the effectiveness and feasibility of the excavation and support of the inclined shaft chamber,and it is necessary to study the supporting ef-fect of the inclined shaft.[Methods]FLAC3D was used to conduct numerical simulation analysis of the distribution changes of stress field,displacement field and plastic zone of the surrounding rock deforma-tion and support technical scheme of inclined shaft.[Findings]In the process of excavation of inclined shafts,the arch,vault,arch foot and floor of the gate-type inclined shaft were the three most unstable ar-eas of excavation surrounding rock under unsupported conditions.The distribution of stress field,dis-placement field and plastic zone of surrounding rock after support is reduced,and the displacement of vault subsidence is reduced from 57 mm to 5.3 mm.The horizontal displacement at the arch decreases from 26.7 mm to 15.7 mm.The horizontal displacement of the floor decreases from 11.3 mm to 7.14 mm.[Conclusions]The distribution of stress field,displacement field and plastic zone of surrounding rock under supporting conditions is well improved,which plays a significant role in controlling the displace-ment deformation and plastic zone range of surrounding rock of inclined shaft.
water diversion in central Yunnaninitial supportinclined shaft excavationFLAC3D simula-tion
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