TY - GEN
T1 - Long distance pipe-jacking cases using long life cutter bits in the big boulder and hard rock ground
AU - Matsumoto, Fumihiko
AU - Morita, Tomo
AU - Sasaoka, Takashi
AU - Shimada, Hideki
PY - 2012/12/1
Y1 - 2012/12/1
N2 - Mechanical pipe jacking methods are adopted for no-dig infrastructure-constructions because of reliability and safety. In especially, high density mud slurry pipe jacking method had much actual results under unique works. Nowadays these methods are desired any diversification under working surrounding. That is, "Direct- Arrival-Method to the existing underground structure", "Sharp radical curve pipe jacking works, for example ,U.L turning curved pipe lines", "Recovery function for un-expectation objects in the ground", and "Rectangular (Box Culvert) pipe jacking method" are demanded. On the other hands, the works in big cobble and hard rock layer are increasing. Under these conditions, the long life inspection of cutting bits is the most important problem. In generality, at life-time over, cutter bits are exchanged in the shield machine or outside pit with bad conditions. However, there are some troubles in these conditions. This report shows the works with long distance pipe line construction through the big cobble and hard-rock layer without replacing cutting bits.
AB - Mechanical pipe jacking methods are adopted for no-dig infrastructure-constructions because of reliability and safety. In especially, high density mud slurry pipe jacking method had much actual results under unique works. Nowadays these methods are desired any diversification under working surrounding. That is, "Direct- Arrival-Method to the existing underground structure", "Sharp radical curve pipe jacking works, for example ,U.L turning curved pipe lines", "Recovery function for un-expectation objects in the ground", and "Rectangular (Box Culvert) pipe jacking method" are demanded. On the other hands, the works in big cobble and hard rock layer are increasing. Under these conditions, the long life inspection of cutting bits is the most important problem. In generality, at life-time over, cutter bits are exchanged in the shield machine or outside pit with bad conditions. However, there are some troubles in these conditions. This report shows the works with long distance pipe line construction through the big cobble and hard-rock layer without replacing cutting bits.
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M3 - Conference contribution
AN - SCOPUS:84883510081
SN - 9781622769056
T3 - 30th International No-Dig Conference and Exhibition 2012, No-Dig Sao Paulo 2012
SP - 152
EP - 161
BT - 30th International No-Dig Conference and Exhibition 2012, No-Dig Sao Paulo 2012
T2 - 30th International No-Dig Conference and Exhibition 2012, No-Dig Sao Paulo 2012
Y2 - 12 November 2012 through 14 November 2012
ER -