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Abstract of the Article

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Making use of the extensometer as a monitoring system of measuring for studies in tunnel

Authors:
[ ALI DADASH ZADEH SAYAR ] - foundation and soil MS
[ ALI FARHADI ] - professor assistant of Ttarbiyat Moalem university in Tehran
[ ISA SHOOSH PASHA ] - professor assistance of MAZANDARAN university

Abstract:

Extensometer is a way in the design and construction of tunnels with NATEM method. With making use of monitoring can equivalent the displacement of tunnel and appointment of stones properties. Monitoring means propping of stone structures and with directly seen and using the equipment that with making use of that can control monitoring inside of stone. This paper shows that with using the accuracy equipment from directly back analysis can find geo mechanical parameters and horizontal strains. For back analysis they used FLAC software. Base of working in this method is comparing the results of displacement that find from displacement model with results of extensometer in NPI10. in the first part they will try to find the geo mechanical parameter and horizontal strain with using of this method. After that with drawing the interaction curve of stone-propping can design the suitable system and after that with FLAC software can equivalent the system.

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