TBM Rapid Tunneling Roadway Support Parameters Design and Process Research

Taking the specific production geological conditions of the auxiliary transportation lane in the west area of Gaojiabao coal mine of Shaanxi Zhengtong Coal Industry as the research background, based on the anchorage support theory and the characteristics of the TBM digging process, numerical simulat...

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Bibliographic Details
Published inProcesses Vol. 11; no. 9; p. 2708
Main Authors Hou, Tao, Xie, Zhonghui, Zhang, Ling, Cui, Guogang, Ding, Ziwei, Qiu, Huafu, Li, Yuhang
Format Journal Article
LanguageEnglish
Published Basel MDPI AG 01.09.2023
Subjects
Boring machines
Coal industry
Coal mines
Coal mining
Deformation
Design
Design parameters
Drilling & boring machinery
Handedness
Mathematical models
Mines
Numerical analysis
Plastic zones
Roads
Row spacing
Simulation methods
Tunneling
China
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Summary:Taking the specific production geological conditions of the auxiliary transportation lane in the west area of Gaojiabao coal mine of Shaanxi Zhengtong Coal Industry as the research background, based on the anchorage support theory and the characteristics of the TBM digging process, numerical simulation, theoretical analysis, and other research methods were used to investigate the depth of the destruction of the plastic zone of the surrounding rock of the roadway to form the reasonable support parameters of a large cross-section of hard rock roadway suitable for TBM digging and to propose an intelligent digging and support process of the TBM corresponding to the on-site practice. The proposed intelligent tunneling support technology corresponds to a field practice of TBM. The study shows that: combined with the field industrial test and adjusted by the peripheral rock deformation and damage law, the anchor diameter of 20 mm, the length of 2500 mm left-hand threaded steel anchors, row spacing of 1100 mm, spacing of 1200 mm, and the anchor diameter of Φ21.8 mm, the length of 6200 mm left-handed threaded steel anchors, row spacing of 1100 mm, spacing of 1200 mm are the most reasonable solutions, which can ensure the control of the tunnel peripheral rock. The program is the most economically efficient in ensuring the control of deformation of the roadway perimeter rock and maintaining normal use.
ISSN:2227-9717
2227-9717
DOI:10.3390/pr11092708