New methods of tunnel construction and its applications, especially in management and control, usually call for sufficient attention to tunnel’s directing process. New surveying equipment and technologies such as GPS and its long-standing rival, Gyro-theodolite, are able to fulfil this need. On the whole, increase in precision of measurements indicates the necessity of special attention to difficulties of underground surveying.
Salehabadi,A. (1997). Recent Advances in Geodetic Control Surveying for Building Large Tunnels. Scientific- Research Quarterly of Geographical Data (SEPEHR), 6(21), 45-50.
MLA
Salehabadi,A. . "Recent Advances in Geodetic Control Surveying for Building Large Tunnels", Scientific- Research Quarterly of Geographical Data (SEPEHR), 6, 21, 1997, 45-50.
HARVARD
Salehabadi A. (1997). 'Recent Advances in Geodetic Control Surveying for Building Large Tunnels', Scientific- Research Quarterly of Geographical Data (SEPEHR), 6(21), pp. 45-50.
CHICAGO
A. Salehabadi, "Recent Advances in Geodetic Control Surveying for Building Large Tunnels," Scientific- Research Quarterly of Geographical Data (SEPEHR), 6 21 (1997): 45-50,
VANCOUVER
Salehabadi A. Recent Advances in Geodetic Control Surveying for Building Large Tunnels. SEPEHR, 1997; 6(21): 45-50.
