تأثير تقلبات مستوى المياه على خصائص الترشيح للسدود الترابية الصغيرة: سد الوند الترابي كدراسةحالة
محتوى المقالة الرئيسي
الملخص
https://joe.uobaghdad.edu.iq/This paper is evaluate the efficiency of a filter system in small earth dam under varying hydraulic pressures over a decade (2015–2025). Using a reverse analysis of hydraulic pressure measurement data, the research revealed a significant discrepancy between the theoretical constant permeability and the actual on-site behavior. Consequently, the hydraulic analysis was divided into two seasonal models: Model 1 (winter/filling) and Model 2 (summer/low water level). The results show exceptional long-term accuracy, with Model 1 achieving a cumulative Nash-Sutcliffe efficiency (EF) of 98%, while Model 2 achieved 95%. Furthermore, validation of the results using 2022 data revealed that the effective permeability during the critical low water level in summer is significantly reduced by approximately 88% compared to the original design values. This study confirms that filter permeability is a highly dynamic parameter, primarily driven by seasonal flow reversals that propel fine particles toward the reservoir, causing severe mechanical blockage and significantly altering the dam's internal hydraulic stability.
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تفاصيل المقالة
القسم
كيفية الاقتباس
المراجع
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