关键词: 露天矿运输, 交叉运输, 钢波纹管, 重载工况, 有限元分析

Abstract: At present, many open-pit mines in China have cross-transport problems, such as Pingshuodong open-pit coal mine, Xiwan Coal mine, Hequ Coal mine and so on. In order to study the feasibility of the overpass project of steel bellow in opencast coal mine under heavy load condition, taking Pingshuo Industrial Avenue project as the background, the paper proposes to use long-span steel bellow to solve the crossing problem of open-pit transportation system. The finite element software ABAQUS is used to analyze and calculate the structural stress. And Midas GTS NX three-dimensional solid finite element analysis method was used to verify the scheme. The results show that the corrugated steel tube tunnel meets the stress requirements under heavy load conditions, and the steel bellows tunnel scheme can be technically used to solve the intersection problem between the main line of Pingshuo Industrial Road and the mining truck transportation road. The research results can be used for reference to solve the cross problem of transportation system in opencast coal mine.