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مهار فرسایش بادی توسط پلیمر SBR و میکروارگانیسم باسیلوس پاسته اوره (مطالعه موردی: منطقه جبل‌کندی) | ||
| تحقیقات آب و خاک ایران | ||
| مقاله 8، دوره 49، شماره 4، مهر و آبان 1397، صفحه 795-806 اصل مقاله (939.18 K) | ||
| نوع مقاله: مقاله پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22059/ijswr.2018.237063.667721 | ||
| نویسندگان | ||
| فرزانه دوزالی جوشین* 1؛ کاظم بدو2؛ محسن برین3؛ حسین سلطانی جیقه4 | ||
| 1عمران.دانشکده فنی.دانشکاه ارومیه.کروه زیوتکنیک | ||
| 2دانشکده فنی و مهندسی- دانشگاه ارومیه- گروه عمران- ارومیه- ایران | ||
| 3دانشگاه ارومیه-گروه علوم خاک | ||
| 4گروه عمران - دانشکده فنی و مهندسی- دانشگاه شهید مدنی آذربایجان- تبریز | ||
| چکیده | ||
| فرسایش بادی از عوامل اصلی تخریب خاک و محیط زیست، انتقال ذرات معلق و رسوبدهنده آن در شبکههای آبیاری و زهکشی است. بادهای موسمی منطقه، منجر به فرسایش بادی اراضی کشاورزی استانهای آذربایجانشرقی و غربی شده و آثار مخربی بر منابع زیست‌محیطی و تأسیسات اقتصادی خواهد داشت. هزینه زیاد مالچهای نفتی و آثار مخرب آنها در محیط زیست، منجر به استفاده از مواد سازگار با محیط زیست و ارزانتر شده است. در این تحقیق، اثر پلیمر مایع رزین SBR و میکروارگانیسم باسیلوس پاسته اوری بر کنترل فرسایش بادی و طوفان گرد و غبار در منطقه جبل‌کندی ارزیابی شده است. برای شبیهسازی فرسایش خاک از دستگاه تونل باد با دامنه سرعت صفر تا 15 متر بر ثانیه در ارتفاع 15 سانتیمتری از کف تونل استفاده شده است. طبق نتایج بدست آمده، در نمونهها، با افزایش سرعت باد مقدار فرسایش خاک به صورت نمایی افزایش مییابد، به گونهای که در نمونه شاهد تا سرعت حدود هفت متر بر ثانیه افزایش مقدار فرسایش خاک ناچیز است، ولی از سرعت حدود هفت متر بر ثانیه تا حدود 15 متر بر ثانیه، مقدار فرسایش خاک از 51/5 به 240 کیلوگرم بر مترمربع بر ساعت افزایش یافته است. همچنین روند افزایش مقدار فرسایش خاک در نمونه تثبیت شده با میکروارگانیسم بسیار کند و در سرعت 15 متر بر ثانیه برابر 1/1 کیلوگرم بر مترمربع بر ساعت و در نمونه تثبیت شده با پلیمر تقریبا صفر است. برای بررسی مقاومت سطحی نمونههای خاک تثبیت شده از آزمایش مقاومت فروروی استفاده شد که طبق نتایج، مقدار متوسط مقاومت فروروی در نمونههای تثبیت شده با میکروارگانیسم و پلیمر به ترتیب برابر با 58 و 76 کیلوپاسکال است در حالی که مقاومت فروروی نمونه شاهد 15 کیلوپاسکال میباشد. | ||
| کلیدواژه‌ها | ||
| بهسازی؛ باکتری باسیلوس؛ پلیمر رزینSBR؛ کنترل فرسایش بادی؛ مقاومت فروروی | ||
| عنوان مقاله [English] | ||
| Inhibition of wind erosion by SBR polymer and Bacillus pasteurii microorganism (Case study: Jabal Kandy region) | ||
| نویسندگان [English] | ||
| farzaneh douzali joushin1؛ Kazem Badv2؛ Mohsen Barin3؛ Hosein Sultani jige4 | ||
| 1Civil engenearing. | ||
| 2Civil engineering of faculty of Urmia University- Urmia- Iran | ||
| 3Urmia University- Faculty of soil Science- Urmia- Iran | ||
| 4Civil engineering Faculty of Shahid madani University- Tabriz- Iran | ||
| چکیده [English] | ||
| Wind erosion is one of the main causes of soil and environmental degradation, the transfer of suspended particles and its sediment in irrigation and drainage networks. Due to the monsoon winds of the region, the erosion of the agricultural lands will attack the agricultural lands of the East and West Azarbaijan provinces and will have devastating effects on environmental resources and economic facilities. The high cost of using mulch and its destructive effects on the environment has led to the use of new and more environmentally-friendly materials. In this research, the effect of SBR resin polymeric material and Bacillus pasteurii microorganism on the control of wind erosion and dust storms in Jabal Kandi region have been evaluated. To simulate soil erosion, a wind tunnel with a velosity range of 0 to 15 m/s at a height of 15 cm from the bottom of the tunnel has been used. According to the results, in samples, with increasing wind speed, the amount of soil erosion increases exponentially, so that in the control sample, up to 7 m/s, the amount of soil erosion is negligible, but the velocity rate of soil erosion from 5.51 to 240 Kg/m2/hr has increased from about 7 m/s to about 15 m/s. Also, the trend of increasing the amount of soil erosion in a sample stabilized by microorganisms is very slow and at a speed of 15 m/s, it is equal to 1.1 kg/m2/hr and in the polymer- stabilized sample is almost zero. To test the surface resistance of stabilizaed soil samples, an penetration resistance test was used which according to the results, the mean value of the penetration resistance in the samples treated with microorganism and polymer was 58 and 76 kPa, respectively, while the penetration resistance of the control sample is 15 kPa. | ||
| کلیدواژه‌ها [English] | ||
| improvement, Bacillus bacteria, SBR resin polymer, Wind erosion control, penetration resistance | ||
| مراجع | ||
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