tailieunhanh - Limitations of navigation through Nubaria canal, Egypt

Alexandria port is the main Egyptian port at the Mediterranean Sea. It is connected to the Nile River through Nubaria canal, which is a main irrigation canal. The canal was designed to irrigate eight hundred thousand acres of agricultural lands, along its course which extends 100 km. The canal has three barrages and four locks to control the flow and allow light navigation by some small barges. Recently, it was decided to improve the locks located on the canal. More than 40 million US$ was invested in these projects. This decision was taken to allow larger barges and increase the transported capacity through the canal. On the other hand, navigation through canals and restricted shallow waterways is affected by several parameters related to both the channel and the vessel. Navigation lane width as well as vessel speed and maneuverability are affected by both the channel and vessel dimensions. Moreover, vessel dimensions and speed will affect the canal stability. In Egypt, there are no guide rules for navigation through narrow and shallow canals such Nubaria. This situation threatens the canal stability and safety of navigation through it. This paper discussed the characteristics of Nubaria canal and the guide rules for navigation in shallow restricted water ways. Dimensions limitation for barges navigating through Nubaria canal is presented. New safe operation rules for navigation in Nubaria canal are also presented. Moreover, the implication of navigation through locks on canal discharge is estimated. | Journal of Advanced Research 2014 5 147-155 Cairo University Journal of Advanced Research ORIGINAL ARTICLE Limitations of navigation through Nubaria canal Egypt Magdy G. Samuel CrossMark Nile Research Institute National Water Research Center Egypt ARTICLE INFO ABSTRACT Article history Received 26 July 2012 Received in revised form 5 January 2013 Accepted 25 January 2013 Available online 13 March 2013 Keywords Navigation management Shallow water Canals Ship dimensions Ship speed Nubaria Alexandria port is the main Egyptian port at the Mediterranean Sea. It is connected to the Nile River through Nubaria canal which is a main irrigation canal. The canal was designed to irrigate eight hundred thousand acres of agricultural lands along its course which extends 100 km. The canal has three barrages and four locks to control the flow and allow light navigation by some small barges. Recently it was decided to improve the locks located on the canal. More than 40 million US was invested in these projects. This decision was taken to allow larger barges and increase the transported capacity through the canal. On the other hand navigation through canals and restricted shallow waterways is affected by several parameters related to both the channel and the vessel. Navigation lane width as well as vessel speed and maneuverability are affected by both the channel and vessel dimensions. Moreover vessel dimensions and speed will affect the canal stability. In Egypt there are no guide rules for navigation through narrow and shallow canals such Nubaria. This situation threatens the canal stability and safety of navigation through it. This paper discussed the characteristics of Nubaria canal and the guide rules for navigation in shallow restricted water ways. Dimensions limitation for barges navigating through Nubaria canal is presented. New safe operation rules for navigation in Nubaria canal are also presented. Moreover the implication of navigation through locks on canal discharge is