TY - JOUR
T1 - Study on slurry-water gushing during underwater shield tunnel construction
AU - Yuan, Dajun
AU - Huang, Qingfei
AU - Koizumi, Atsushi
AU - Wang, Mengshu
PY - 2007/11
Y1 - 2007/11
N2 - The slurry type shield method is the first choice for submarine soft-soil shield tunnel. If the slurry pressure is too high, it may lead to hydraulic fracturing of stratum in front of open face and cause accident of water gushing. The phenomena described as above, including mechanism of fracturing and the influence of slurry pressure on stratum fracturing, are studied. The achieved results show that, as slurry type shield is driven in submarine stratum, it is inevitable for some tiny cracks to exist in the strata, but the phenomena with/without water gushing has close relation with driving parameter, slurry characteristics, stratum characteristics and overburden thickness. Through theoretical analysis and shield model test, a semi-empirical formula of slurry gushing and anti-gushing method is put forward.
AB - The slurry type shield method is the first choice for submarine soft-soil shield tunnel. If the slurry pressure is too high, it may lead to hydraulic fracturing of stratum in front of open face and cause accident of water gushing. The phenomena described as above, including mechanism of fracturing and the influence of slurry pressure on stratum fracturing, are studied. The achieved results show that, as slurry type shield is driven in submarine stratum, it is inevitable for some tiny cracks to exist in the strata, but the phenomena with/without water gushing has close relation with driving parameter, slurry characteristics, stratum characteristics and overburden thickness. Through theoretical analysis and shield model test, a semi-empirical formula of slurry gushing and anti-gushing method is put forward.
KW - Cohesive soil stratum
KW - Fracture extending speed
KW - Hydraulic fracturing
KW - Shield model test
KW - Slurry type shield
KW - Tunnelling engineering
UR - http://www.scopus.com/inward/record.url?scp=36549068821&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=36549068821&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:36549068821
SN - 1000-6915
VL - 26
SP - 2296
EP - 2301
JO - Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering
JF - Yanshilixue Yu Gongcheng Xuebao/Chinese Journal of Rock Mechanics and Engineering
IS - 11
ER -