The construction of water-diversion inclined shafts with large slopes in pumped storage power
stations using conventional methods presents numerous challenges, including
high safety risks, significant environmental impacts, and low construction
efficiency. To address these issues, a full-face tunnel
boring machine(TBM) has been specifically designed and developed. Initially,
the application of a full-face inclined shaft TBM is
justified based on the project and geological characteristics of the Luoning
pumped storage power station, leading to the selection of an appropriate TBM
type. Subsequently, the authors introduce the critical technologies of the
first Chinese full-face inclined shaft TBM designed for
steep inclines. These technologies encompass anti-back-slip mechanisms, machine stepping, mucking, logistics, handling of
abnormal situations, material transportation, and management of complex
geological conditions. The implementation of these technologies in the
construction and operation of the inclined shaft TBM at the Luoning pumped
storage power station yields significant outcomes: (1) The full-face inclined shaft TBM is suitable for constructing pumped storage
power stations, demonstrating minimal environmental impact and low carbon
emissions. (2) The open-type main machine, equipped
with double anti-back-slip
grippers, fulfills the requirements for constructing at steep inclines while
ensuring high safety levels. (3) The strategic placement of hydraulic winches
in the assembly chamber and the installation of return rope wheels at the TBM′s tail facilitate the frequent transportation of personnel and
materials.
JIA Lianhui
,
SUN Heng
,
ZHANG Xingbin
,
YU Qingzeng
,
LI Lei
,
NING Xiangke
. Crucial Construction
Technology of Tunnel Boring Machines for Constructing Large-Slope Inclined Shaft in Pumped Storage
Power Station[J]. Tunnel Construction, 2024
, 44(8)
: 1660
-1668
.
DOI: 10.3973/j.issn.2096-4498.2024.08.013
