To provide a semi-shield method capable of minimizing construction cost and construction time.
This semi-shield method comprises a process in which an underground pipe line excavator advances so as to form a pipe line between a start device and an arrival device, a process in which a pipe advances through the pipe line while inserting many intermediate jacks between pipes, a process in which many intermediate devices are formed to recover the buried intermediate jacks, and a process in which many manholes are provided in the start device, the arrival device, and the intermediate devices. The number of intermediate devices is equal to or larger than the number of intermediate jacks positioned between the start device and the arrival device. Construction cost and construction time can be reduced by providing the manholes without carrying out the ground stabilizing construction work by each intermediate device.
PARK JEONG KWEN
KANG WANG KYU
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