پديد آورندگان :
اسفندياري درآباد ، فريبا نويسنده استاديار گروه جغرافي، دانشگاه محقّق اردبيلي، اردبيل , , هاشمي ، سيّد اقبال نويسنده دانشجوي كارشناسي ارشد ژيومورفولوژي، دانشگاه محقّق اردبيلي ,
چكيده فارسي :
از دسته مخاطرات طبيعي كه جان و مال انسانها را تهديد ميكنند، ناپايداريهاي دامنه اي هستند و ازجمله اين دامنه هاي ناپايدار، ميتوان به دامنه هاي مشرف بر مسير ارتباطي پاوه ـ نودشه اشاره كرد. اين دامنه ها شايد در گذشته چندان ناپايدار نبوده اند، اما امروزه با دخالت مستقيم و غيرمستقيم انسان، تعادل طبيعي خود را از دست داده و درنتيجه ناپايدار شده اند. در اين پژوهش با استفاده از مدل تحليل سلسلهمراتبي AHP و با استفاده از نرمافزار Expert Choice 11، به عوامل موثّر در ناپايداري اين دامنه ها شامل: شيب، ليتولوژي، پوشش گياهي، گسيختگي سنگي و فاصله از گسل با توجّه به تاثيراتشان وزن داده شد و درنهايت، لايه هاي اطلاعاتي تهيّه و در محيط GIS نقشهي پهنهبندي ريزش آنها تهيّه شده است. ازجمله عواملي انساني كه سبب ناپايداري اين دامنه ها شده است، ميتوان به تغيير در كاربري اراضي، كاهش پوشش گياهي، تغيير در هندسهي شيب دامنه ها و زيربري دامنه ها و احداث راههاي ارتباطي روي اين دامنهها، اشاره كرد كه سبب شده است اين دامنه ها ناپايدار شده و تعادل طبيعي خود را از دست بدهند، بهگونهاي كه در بيشتر طول مسير شاهد ريزش دامنه هستيم.
چكيده لاتين :
Introduction
Instability of the natural range of geological phenomena and the morphology of the surface deformation has a significant role. And the impact that human activities, can become a dangerous phenomenon.
Range of geomorphological processes such as forms of internal and external processes, which each year and the financial toll of human life imposed on them. A range of actions including crawling, falling, and falling rocks, landslides, Soly Flucsion (sent flowers), avalanches, mass movements of soil and rock and ... Is. Some of these processes is referred to as the bulk material. Mass movement of detachment and transportation of soil and rock material under the influence of the downward force of gravity (Motamed, 1379: 55). Among the paths connecting the Pave – Novdesheh Because of the particular situation in the territory of the Zagros (Zagros North West), Due to the change in elevation along the mountains and also the impact of water and heat, cold, humid to semi-arid climatic conditions Hkmfrmast (Alai Taleghani, 1384, p. 163).Today saw the field with the observed land use changes, loss and loss of vegetation and trenching on slopes composed of loose materials are These factors combined with the impact of internal and external forces that has caused most of the slopes overlooking the Pave - Nodesheh be unstable.
Methodology
In this study, field study using topographic maps 50000 / 1 and geological maps 100000 / 1 and with the help of Google Earth software, the exact position was Determined. According to the research topic, such as the slope of the layers, Litology, vegetation, rock, and the distance from the fault rupture was prepared. First, using the Analytical Hierarchy Process ((AHP both manually and with software Expert Choice as an effective factor in the instability domain according to the importance score data and to compare the two to Dvshdh, and then computing the final weights were determined and the necessary criteria, and ultimately contributing factors have been identified in order of importance.
Results and Discussion
With note by study factors effective in fall by method AHP, recognized slope, cover plants and litology have most effect, joint stone and distance of fult have a low effecting in fall zon.in produce map AD fall in GIS, four zon hazard fall recognized that zon with high hazard because high slope, change land use and stones weak composed of domains in north zon have most hazard fall, and zons south and south- west cause a lot of cover jungle and stability stons in front weathering have low hazard assess. Method AHP complete can able in resolve for AD zons.in final results AHP and Expert Choice compatible near together.
Conclusion
Finally, with a view of geomorphological data, software Arc GIS data layer overlap region and in the end zone size is specified in terms of loss، Finally, with respect to the field and scoring of the factors affecting the instability range with emphasis on the loss, the resulting revenue loss to the hazard zonation map that With note the study of effective elements in fall stone by method AHP recognize that slop, litology and cover plants with respectively important have the most effect is and crack stone and distance of fult have is the lowly effect in the stone fall is regional. In provide map surface hazard stone fall in the software GIS four surface of see hazard stone fall recognized, that zone with very high hazard by reason i increase slop , change land use and material weak composed of domain in north zone have the most hazard fall stone and zone south and west south by reason density increase and recalcitrance stone in front of weathering have is the lowly hazard. With the see environmental and was study, AHP model for classification stone fall stone regional is have the ably.
