The shaft excavated using the traditional mining
method faces dangerous water inrush, geothermal, and insitu
stress problems. The drilling method has limited adaptability to formations,
and the caisson method is restricted by the excavation depth. To improve the
construction efficiency, environment, safety, and mechanized level of shaft
construction, a fullface shaft tunneling machine
integrating excavation, mucking, and supporting is designed based on the tunnel
boring machine technology and the shaft mining method. A hanging plate replaces
the backup system, and multiple innovative designs, including rock breaking
system while muck removing, muck discharge by multiinstitution,
annular support propulsion system, special guiding system, and remote control
system, are adopted considering the current shaft supporting method. A
functional test has been conducted on a developed machine in a foundation pit,
synchronous tunneling and mucking have been realized, and the shaft wall is of
good quality. The results show the feasibility of the method for fullface shaft construction and promote the mechanized development of
shaft tunneling.
ZHENG Kangtai
,
JIA Lianhui
,
NIU Mengjie
,
LYU Dan
,
XIAO Wei
,
WANG Xiaolong
. Development and Key System Test of FullFace
Shaft Tunneling Machine[J]. Tunnel Construction, 2021
, 41(10)
: 1794
-1800
.
DOI: 10.3973/j.issn.2096-4498.2021.10.019
