Research on rack foundation design of sliding rail stepping guide for starting TBM in mine inclined shaft
MENG Youqiang
SHEN Jianchen
ZHOU Xiaomin
XU Yan
MA Hao
LIU Yong
Abstract：A new open-face tunnel boring machine(TBM)was applied in the Xi'anshan Inclined Shaft Project,and a"Squatting Beam Reaction Sliding Rail"TBM stepping process was designed based on the inclination of the starting inclined shaft,the geological conditions at the portal and the site.Based on the sliding track stepping method,two design focuses of the"double station beam kneeling coun-terforce sliding track stepping"were studied,including:the design principles and methods of the steel reinforced concrete expansion foundation for the starting guide platform;and the structural design of the station beam and kneeling beam.The conclusion drawn from this study is that the counterforce station beam and kneeling beam structure and the guide platform foundation design of the open-face TBM for iron ore inclined shaft can avoid the large friction caused by direct contact with concrete,and can effectively reduce the power demand for empty push stepping.The proposed double station beam kneeling counterforce stepping equipment design greatly simplifies the construction equipment.Note that the initial foundation height should be selected when calculating.The wall thickness design of the kneeling beam and station beam should be calculated based on the combination of the dimensions of the beam and the column.
Keywords：open TBMiron mine inclined shaftsliding rail steppingstation pile squatting beam reaction rack
Publication Date：2025-12-31
Online Publishing Date：2025-11-25(First online date of this platform, not the publication date of the document)
Pages：8( 21-28 )