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ارزیابی استعداد احداث سد زیرزمینی با بهره وری از روش سلسله مراتبی فازی در دشت کوهدشت | ||
| پژوهش های آبخیزداری | ||
| مقاله 11، دوره 33، شماره 4 - شماره پیاپی 129، دی 1399، صفحه 142-158 اصل مقاله (2.17 M) | ||
| نوع مقاله: پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22092/wmej.2020.128410.1281 | ||
| نویسندگان | ||
| سیامک بهاروند* 1؛ وهاب امیری امرایی2؛ سلمان سوری3 | ||
| 1استادیار، گروه زمینشناسی، واحد خرمآباد، دانشگاه آزاد اسلامی، خرمآباد، ایران | ||
| 2استادیار، پردیس علوم پایه، گروه زمینشناسی، دانشگاه یزد، یزد، ایران | ||
| 3کارشناس ارشد، باشگاه پژوهشگران جوان و نخبگان، واحد خرمآباد، دانشگاه آزاد اسلامی، خرمآباد، ایران | ||
| چکیده | ||
| اهمیت مدیریت آبخوانها برای تأمین نیاز آبی ساکنان منطقههای خشک و نیمهخشک بسیار است. هدف از پژوهش انجام شده ارزیابی کیفی منبعآب زیرزمینی و یافتن مکانهای مناسب برای ساخت سد زیرزمینی در دشت کوهدشت (غرب استان لرستان) است. در این پژوهش از خصوصیتهای شیمیایی آب زیرزمینی، با معیارهای شولر و ویلکوکس برای ارزیابی کیفیت منبع آب آشامیدنی و کشاورزی بهرهگرفته شد. نتیجهها نشان دهنده ی مطلوبیت کیفیت آب زیرزمینی برای مصرفهای مختلف است. برای شناسایی مکانهای مناسب ساخت سد زیرزمینی از عاملهایی چون شیب، سنگشناسی، کاربری زمین، تراکم شبکهی آبراه، بارش، دما، فاصله از روستا، چاه، گسل و چشمه بهرهبرده شد. پس از تهیهی لایههای پژوهشی، نقشهی هر عامل بترتیب با منطق فازی و فرآیند تحلیل سلسلهمراتبی، معیارسازی و وزندهی شد. ارزیابی عاملهای مختلف اثرگزار نشان میدهد که سه عامل آبراه، سنگشناسی و شیب به ترتیب با وزن های 0/243، 0/206 و 0/153 بیشترین تأثیر را در انتخاب محل بهینه دارد. با همپوشانی نقشههای وزنی هر لایه در نرمافزار آرک جیآیاس نقشه ی منطقههای مناسب تهیه شد. به ترتیب 20/35 ،15/90 ،14/92 ،26/28 و 22/54 % از مساحت منطقه در پهنههای خیلی نامناسب، نامناسب، متوسط، مناسب و خیلی مناسب برای ساخت سد زیرزمینی است. پس از پیمایشهای پُرشمار صحرایی، 6 مکان در پهنهی خیلی مناسب انتخاب شد، که در مسیر آبراهای با رتبه ی آبنگاری 4 و زیادتر است. | ||
| کلیدواژهها | ||
| سد زیرزمینی؛ سلسلهمراتبی فازی؛ سامانهی اطلاعات جغرافیایی؛ کوهدشت؛ کیفیت آب | ||
| عنوان مقاله [English] | ||
| An Assessment of the Potential of Underground Dam Construction Using the AHP Fuzzy Methods in the Kouhdasht Plain | ||
| نویسندگان [English] | ||
| Siamak Baharvand1؛ Vahab Amiri Amraei2؛ Salman Soori3 | ||
| 1Assistant Professor, Department of Geology, Khorramabad Branch, Islamic Azad University, Khorramabad, Iran | ||
| 2Assistant Professor, Faculty of Science, Department of Geology, Yazd University, Yazd, Iran | ||
| 3M.Sc.,Young Researchers and Elite Club, Khorramabad Branch, Islamic Azad University, Khorramabad, Iran | ||
| چکیده [English] | ||
| Aquifers management is of utmost importance used for supplying the water use in different sectors in the arid and semiarid regions. This research aims to evaluate the quality of groundwater resources and to find suitable locations for the construction of underground dams in the Kouhdasht area (west of the Lorestan Province). To evaluate the water quality for drinking and agricultural purposes, the chemical parameters of groundwater resources were placed in the Schaller and Wilcox diagrams. The results indicated that groundwater quality is desirable for various uses. To identify suitable locations for the construction of underground dams, factors namely: slope, lithology, land use, drainage network density, precipitation, temperature, distances from the village, well, fault, and springs were used. After providing the various data layers, the map of each factor is standardized and weighed using the fuzzy logic and the hierarchical analysis process, respectively. Evaluation of various factors influencing the determination of suitable areas for construction of underground dam revealed that three factors namely drainage network, lithology, and topographic slope with a weight of 0.243, 0.206, and 0.153, respectively, had the greatest impact on the selection of optimal locations. By overlaying the weighted maps provided for each layer in the Arc GIS 10, a map showing the suitable sites for the construction of underground dams was produced. Based on the results, 20.35, 15.90, 14.92, 26.28, and 22.54 percentage of the area were evaluated as highly inappropriate, inappropriate, moderately, appropriate, and very appropriate for the construction of underground dams, respectively. Performing detailed field surveys in the very appropriate areas, six sites were selected for the construction of underground dams. These were located on the path of the fourth-order and greater streams. | ||
| کلیدواژهها [English] | ||
| Underground dam, AHP Fuzzy, GIS, Kouhdasht, water quality | ||
| مراجع | ||
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