عنوان مقاله :
Effects of Soil Moisture Content on Dust Sources in Disturbed and Pseudo Undisturbed Soil in Southeastern Ahvaz
پديد آورندگان :
Ghomeishi ، Abdolazim Islamic Azad University, Shoushtar Branch - Department of Civil Engineering , Ghomeshi ، Mehdi Shahid Chamran Univeristy of Ahvaz - Water Engineering and Environment Faculty , Mahmoudian Shoushtari ، Mohammad Islamic Azad University, Shoushtar Branch - Department of Water Science and Engineering , Landi ، Ahmad Shahid Chamran University of Ahvaz - College of Agriculture , Purmohammadi ، Mohammad Hosain Islamic Azad University, Shoushtar Branch - Department of Water Science and Engineering
كليدواژه :
Erosion , Dust , Soil Moisture Content , Granulation , Wind tunnel , Soil stabilization
چكيده فارسي :
This research conducted various experiments using a wind tunnel on soil samples from the most critical parts of dust sources in southeastern of Ahvaz. The main goal of this study is to show the effect of moisture on the movement of soil particles in the dust centers. The laboratory work was carried out in two parts: a: Addition of water to completely disturbed soil surface (wetting in the bag) b: Addition of water to soil layers of samples wetting that was named pseudo undisturbed soil. The results showed that dust generation under natural conditions (dry soils) in a laboratory wind tunnel will be 53 times more than the pseudo undisturbed soils with moisture content of 24% in volume. Moreover, soils with moisture contents of 58 and 1012% do not differ significantly from those with 24% moisture content in preventing dust generation. If soil surface is disturbed after it is provided with adequate moisture, not only will dust generation not decrease compared to the case when the soil surface was dry but it will also increase by 25 percent. The practical point of this study is that in the study area, increasing soil moisture between 2 to 4% can greatly reduce the formation of dust.
عنوان نشريه :
علوم و مهندسي آبياري
عنوان نشريه :
علوم و مهندسي آبياري
