الأخطار البيئية المحتملة بموضع مدينة أسيوط الجديدة باستخدام نظم المعلومات الجغرافية

Abstract EN

New Assiut city is one within the new 2000 urban communities; it covers an area of 30 thousand acres, and is expected to reach a population of 200,000 by 2020.

The city is characterized by many natural properties such as climatic conditions, geological and geomorphological region that contribute too many environmental hazards, especially torrents, movement of material on the slopes and soil subsidence.

The morphological study of longitudinal sectors on the valleys region indicates that areas drainage basins totaled 234.3 km2, with a general average of 46, 86 km2 and average length for each basin of 7.47 km.

The shape of the basin region is closer to a triangle rather than a square and characterized by increasing the number of sewers, and drainage density reached 7.57 km/km2.

The total volume of runoff is expected to reach some 4 million m3, and the total volume of surface discharge expected during torrent to reach 1097.1 thousand m3/min, and there are in the region two types of basins; one with the possibility of high run-off and low groundwater, and basins with the possibility of high run-off and medium groundwater.

Those valleys represent a major threat to the installations of the new town of Assiut.

It also exposed new town of Assiut to the occurrence of rock falls and landslides because it is located on the Eocene rocks consisting of limestone layers with mutual Cretaceous layers of marl as that Tafl configurations deployed heavily in the area, which is located below the established residential neighborhoods new town is being extended and increased in size when water intrusion, either from rain or flood flowing into the region's waters and thus affect expansion in the foundations of buildings and displays it for a mile or cracked foundations and also collapse.

New positions were then proposed for the city expansions to prevent environmental hazards; including the transfer of existing residential area to the south, moving the industrial zone to the southeast corner, as well the wooden farm can be transferred outside the cordon of the city by 17 km.