The waste slurry generated
by urban shield tunneling faces challenges such as limited dewatering sites and
high direct transportation costs by vehicles. A case study of the Lianghu
tunnel in Wuhan, China, is conducted to evaluate the feasibility of the long-distance pipeline transportation of slurry. Laboratory tests and
field data collection are carried out, and a high-precision
friction loss calculation formula is recommended. Based on energy consumption
analysis, the optimal slurry conveying density is proposed. Subsequently, a
long-distance pipeline transport configuration scheme
is developed, the theoretical output is calculated, recommended construction
parameters are optimized, and the scheme′s feasibility
is demonstrated. The results reveal the following: (1) The influence of slurry
rheological properties should be considered when calculating friction
resistance, as maintaining a suitable high concentration reduces transport
energy consumption. (2) Long-distance pipeline
transport technology for shield tunneling waste slurry is feasible from an
engineering perspective: a multi-booster-pump transport scheme effectively meets waste slurry transport
requirements. (3) Selecting appropriate operating parameters ensures effective
waste slurry transport, reduces construction energy consumption, enhances the
adaptability of the transport system, and improves construction efficiency.
TIAN Jiuhui
,
CHENG Huaqiang
,
WANG Feixin
,
LIU Misha
,
LIU Gongxun
. Research on Long-Distance Pipeline Transport Technology for Waste Slurry From Urban Shield Tunneling[J]. Tunnel Construction, 2025
, 45(1)
: 179
-185
.
DOI: 10.3973/j.issn.2096-4498.2025.01.015
