Various Kocks in the rivers watershed basin are outcropped by the weathering and erosion and transition, clay and silt particles and big particles such as gravel, sand and rubble stone obtaines, will desposite at the rivers bed by floods. Continuation of despositing these sediments and not taking them off causes increasing river bed levels overflowing into lands around the river. Because of civilization development in twentieth ceutury, irregular offtakes sand and gravel materials existent on the bed and bounds of the rivers not observing there lated rules and bounds of the river and other structures which intersecting the river bed is accomplished. So that severe critic in change graded particles of the river sand and gravel materials, rivers morphological changes and their geometry in most of existent rivers in Khosestan province is sreated.
Expantion of old alluvial traces and alluvial fan in Khozestan province have created appropriate place to construct mines. Controlling offtake these resourse of mentioned mines makes possible the and gravel matefials supply without damaging the rivers.
Various rocks in the river watershed basin are outcropped . very large amountof fine and coarse grains are obtained du to the oction of weathering and erosion. These graines are transported by floods and then gradualey deposited at the rivers bed .
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Showing Abstract of Analysis the sand gravel mines of the river and the methods to implant them by mountainous sand and gravel mines
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Analysis the sand gravel mines of the river and the methods to implant them by mountainous sand and gravel mines
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