To investigate the evolution process and damage
characteristics of complex geology during tunnel boring machine (TBM)
tunneling, a micro TBM model test system suitable for complex geological conditions
is developed. The system comprises a microtunneling device, multifunctional rock box, microtunneling machine
position translation device, quadruple hydraulic system, and microtunneling machine tunneling control system. The system can realize
the adjustable advance speed of 0~50 mm/min, the adjustable speed of the
cutterhead of 0~10 r/min, the maximum torque of the cutterhead of 1 000 N·m, and the maximum safe driving distance of the cutterhead of 1 100
mm. Furthermore, it can perform halfsection visual
tunneling and fullsection high groundstress simulation tunneling and obtain the change law of tunnel
stress during TBM tunneling in complex geology in advance, providing a reliable
reference for TBM tunneling in complex geology with large buried depth and high
groundstress on site.
ZHAO Hailei
,
ZENG Chuigang
,
WANG Liming
,
PAN Dongjiang
,
YANG Zhenxing
,
ZHAO Ziji
,
LI Hongbo
. Development and Application of a Micro Tunnel Boring
Machine Test System Suitable for Simulating Complex
Geological Conditions[J]. Tunnel Construction, 2022
, 42(9)
: 1561
-1569
.
DOI: 10.3973/j.issn.2096-4498.2022.09.007
