Conventional drill-and-blast
inclined shaft construction faces several challenges, including poor
environment, low safety, and limited mechanization. To address these issues, a
full-face inclined-shaft boring
machine integrating excavation, mucking, and bolt-mesh-shotcrete support functionalities is designed and developed based on
tunnel boring machine (TBM) technology and the inclined-shaft raise-boring method. Based on the
characteristics of raised boring at large inclinations, four innovative designs
are implemented: (1) A double anti-skid system,
featuring a multi-gripper mechanism combined with the
main engine gripper, is incorporated to effectively prevent the sliding of the
thousand-ton equipment, establishing a safety system.
(2) The back structure of the TBM cutterhead optimized for mucking is
developed, creating a large-inclination gravity-mucking system with a shield gate and chute. (3) To ensure
construction safety under large inclination, a tail safety structure and a
container angle adaptive adjustment device are developed. (4) In environments
with large height differences and long distances, ventilation and water supply are
enhanced to avoid heat concentration at the upper sections. The developed
results have been successfully applied in the diversion inclined shaft of the
Luoning pumped storage power station, and the first line was penetrated. The
maximum daily penetration is more than 16 m, enabling synchronous excavation
and mucking with high-quality shaft walls with minimal
impact on the environment.
YU Qingzeng
,
NING Xiangke
,
ZHANG Xingbin
,
LI Lei
. Development and Application of a Full-Face
Inclined-Shaft Boring Machine With
a Gravity-Mucking System: A Case Study of Luoning
Inclined Shaft[J]. Tunnel Construction, 2025
, 45(4)
: 852
-860
.
DOI: 10.3973/j.issn.2096-4498.2025.04.018
