Key technology of open TBM construction in bad section of deep roadway in coal mine
ZHANG Jiale
YANG Ming
ZHANG Lulu
CHU Yuelang
NIU Bin
YANG Xiesheng
LIANG Chengcheng
LI Mingjing
KANG Yiqiang
Abstract：With the increase of coal mining depth,the adverse geological problems encountered by open-type TBMs when applied to deep coal mine roadway construction are gradually highlighted.In order to make the open-type TBM work safely and efficiently in the deep roadway,it is necessary to make a targeted design for the open-type TBM to cope with the faults and fracture zones,high geostress,high geothermal temperature,gas protrusion and other adverse geological environments.The fault and fracture zone open-type TBM is equipped with 1 set of overdrilling and injection machine and 4 sets of independent anchor drilling machine,which can effectively carry out overdrilling and re-inforce the fractured surrounding rock;the internal/external circulating water cooling system and the increase of water nozzles on the cutter plate in the high geothermal environment can reduce the tem-perature of the operation and construction environment;and the targeted design is made for the other unfavourable geologic environments.The targeted design of open-type TBM can improve the working efficiency,reduce the construction cost,accelerate the construction progress,and achieve good results in the construction of deep tunnels with bad geological conditions,and provide reference and guidance for other similar projects.
Keywords：deep roadway in coal minebad areaopen TBMtargeted design
Publication Date：2025-02-24
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)