برآورد حداكثربرداشت مجاز از منابع آب زيرزميني مطالعه موردي: حوزه نرماب استان گلستان

Estimated maximum allowable harvest of underground water resources (case study: Narmab basin in Golestan Province)

بموازات رشد سريع جمعيت و افزايش نيازهاي بشري تامين آب براي مصارف شرب كشاورزي و صنعتي از اهميت ويژه اي برخوردار گرديدها ست دراين ميان منابع آبهاي زيرزميني بمنزله منابعي مطمئن جهت تامين مصارف فوق تلقي مي گردند درسالهاي اخير برداشت بي رويه از منابع مزبور از يك سو و فعاليت بشر درجهت تامين غذا از سوي ديگر باعث لطمات جبران ناپذيري به اين منابع ازنقطه نظر كمي و كيفي گرديده است بمنظور ارزيابي اثرات ناشي از توسعه درشرايط موجود و پيشنهادي برروي منابع آبهاي زيرزميني چه از نقطه نظر كمي و كيفي شبيه سازي رياضي و كامپيوتري اين منابع ابزاري قوي دربهره برداري بهينه ازا ين منابع محسوب م يگردد درسالهاي اخير مدلهاي رياضي و كامپيوتري متعددي بمنظور شبيه سازي رفتار هيدروليكي منابع ابهاي زيرزميني مورد توجه قرارگرفته است. اكثريت قريب به اتفاق اين مدلها به كمك آبخوان خاص تبييننگشته و عملا كاربردي نمودن مدل مستلزم انطباق با شرايط خاص منطقه موردمطالعه مي باشد.

Parallel rapid population growth and increasing human needs, water supply for drinking, agriculture and industry are important. Meanwhile, reliable sources of groundwater resources Bmnzlh considered to provide the above enumerated purposes. In recent years, uncontrolled harvesting of the resources mentioned on the one hand, and human activity on the other hand for food supply caused irreparable losses to the sources of quantitative and qualitative point of view has been. In order to evaluate the effects caused by existing conditions and proposed development on groundwater resources, whether quantitative or qualitative terms, mathematical and computer simulation of this powerful tool in resource utilization of these resources is considered optimal. In recent years several mathematical models and computer simulation for hydraulic behavior of groundwater resources has been considered. The overwhelming majority of these models explained not traveled for a particular aquifer, effectively making the model applicable require compliance with specific conditions is the study area. The study also reviews the field of underground water level fluctuations Nrmab using software Visual Modflow V.3.1, the maximum allowable harvest of the aquifer was investigated during the various scenarios. The results showed that in case of drought occurrence in the region, increase the harvest of the aquifer, facing the table with a sharp drop and power needs will be too small