@article{(Open Science Index):https://publications.waset.org/pdf/9997043,
	  title     = {Sewer Culvert Installation Method to Accommodate  Underground Construction in an Urban Area with  Narrow Streets (The Development of Shield  Switching Type Micro-Tunneling Method and the  Introduction of Construction Examples)},
	  author    = {Osamu Igawa and  Hiroshi Kouchiwa and  Yuji Ito},
	  country	= {},
	  institution	= {},
	  abstract     = {In recent years, a reconstruction project for sewer 
pipelines has been progressing in Japan with the aim of renewing old 
sewer culverts. However, it is difficult to secure a sufficient base area 
for shafts in an urban area because many streets are narrow with a 
complex layout. As a result, construction in such urban areas is 
generally very demanding. 
In urban areas, there is a strong requirement for a safe, reliable and 
economical construction method that does not disturb the public’s 
daily life and urban activities. With this in mind, we developed a new 
construction method called the “shield switching type micro-tunneling 
method,” which integrates the micro-tunneling method and shield 
method. 
In this method, pipeline is constructed first for sections that are 
gently curved or straight using the economical micro-tunneling 
method, and then the method is switched to the shield method for 
sections with a sharp curve or a series of curves without establishing 
an intermediate shaft. 
This paper provides the information, features and construction 
examples of this newly developed method.

 
},
	    journal   = {International Journal of Civil and Environmental Engineering},
	  volume    = {8},
	  number    = {1},
	  year      = {2014},
	  pages     = {1 - 6},
	  ee        = {https://publications.waset.org/pdf/9997043},
	  url   	= {https://publications.waset.org/vol/85},
	  bibsource = {https://publications.waset.org/},
	  issn  	= {eISSN: 1307-6892},
	  publisher = {World Academy of Science, Engineering and Technology},
	  index 	= {Open Science Index 85, 2014},
	}