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Register a new userContribution to the Optimum Evaluation of the Long Term Pumping Test from the Confined Aquifer of Banyas Area- Syria
مساهمة في التقييم الأمثل لتجربة ضخ طويلة الأمد من طبقة المياه الجوفية المضغوطة في بانياس - سورية
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شريف بدر حايك( باحث )
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يتضمن البحث دراسة تحليلية لتجربة ضخ طويلة الأمد مع آبار مراقبة، بهدف التحديد الأمثل لأهم البارامترات الهيدروجيولوجية للطبقة الحاملة للمياه الجوفية المضغوطة في بانياس، و ذلك بالضخ من بئر بمعدلات تصريف شبه ثابتة و بقيمة وسطية Qave=10104 m3/day. و استمرت تجربة الضخ لمدة 36 ساعة، تلتها تجربة نهوض كامل لسطح المياه الجوفية لمدة 5 ساعات فقط. و تمّت مراقبة تغيرات سطح المياه الجوفية المرافقة في آبار المراقبة. و قد اعتمد تقويم تجربة الضخ الطويلة الأمد على طرائق تحليلية لحالتي الجريان المستقر و غير المستقر للمياه الجوفية، و من ثم تحديد التقويم الأمثل منها، حيث بلغت الناقلية المائية للطبقة المضغوطة الحاملة للمياه الجوفية حوالى 5000 m2/day و هي ذات مأمولية مائية عالية جداً و عامل تخزينها 1,8.10-4. و بعد ذلك التنبؤ بهبوط سطح المياه الجوفية خلال يوم واحد من الضخ، حيث يمكن الحصول على 20000m3/day من الطبقة المضغوطة، مقابل هبوط شبه مستقر لا يزيد على 1,75م على بعد 500 م من بئر الضخ.
The research includes an analytical study of long term pumping test with observation wells to get the optimum determination of the most important hydrogeological parameters of confined aquifer in Banyas, by pumping from a well with average pumping rate 10104m3/day for 36 hours and only 5 hours of complete recovery groundwater level. This test is accompanied by measuring the variations of the groundwater levels in the monitoring wells. Analytical methods of steady- unsteady of groundwater flow are used to evaluate the long term pumping test, and then to determine the optimum evaluation. The Transmissivity of the confined aquifer is about 5000 m2/day (very high potential), and the storage coefficient is 1,8.10-4. Then they used to predict the groundwater drawdown during one day. So, we can get 20000 m3/day from the aquifer and the drawdown not more than 1,75 m as quasi-steady drawdown at distance 500 m from the pumping well.
References used
KRUSEMAN, G.P; DE RIDDER, N.A. Analysis and Evaluation of Pumping Test, 2nd edition, HOLLAND, 2000, 377
SMEDT F.DE. Analytical solution for constant–rate pumping test in fissured porous media with double–porosity behavior. Springer Science + Business Media B.V, Belgium, 2011, 479-489
Project of Supplying Part of the Water Demand of Damascus City and Its Country Side from the Syrian Coastal Area Water Surplus, IBG/DHV Company, SWITZERLAND- HOLLAND, 2004
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