تأثير الزلازل المتكررة على سد الأعظم الترابي

محتوى المقالة الرئيسي

Abdulsalam Mahdi Mirza
Zuhair Kadhim Jahanger
Basim Sh. Abed

الملخص

السدود الترابية في المناطق ذات النشاط الزلزالي المتوسط ​​إلى المرتفع ضرورية لحماية المجتمعات الواقعة أسفل النهر. ربما يكون زلزال حلبجة في العراق عام 2017 قد أضر بسلامة هيكل السد. يعاني سد دربنديخان، الذي تأثر بالزلزال، من عيوب في قمته ومنحدره أسفل النهر، مما يزيد من خطر الأضرار الناجمة عن الزلازل. يُعد تقييم سلامة السد أمرًا ضروريًا لحماية السكان ومنع فشل استقرار المنحدر أثناء الأحداث الزلزالية. يتم تحديث خريطة الزلازل في العراق لتعكس حجم الزلزال، مما يسلط الضوء على الحاجة إلى اتخاذ إجراءات فورية. الأعمدة الحجرية هي تقنية لتحسين التربة تستخدم أعمدة حجرية مضغوطة لزيادة قوة التربة من خلال تعزيز قوة القص وتقليل ضغط الماء الزائد في المسام في التربة غير المتماسكة. لم يتم التحقيق على نطاق واسع في سلوك أعمدة الدعامة الحجرية على المنحدرات تحت الأحمال الساكنة والديناميكية. يتضمن الهدف دراسة تأثير الأعمدة الحجرية على استقرار المنحدر السفلي لسد العظيم الترابي في محافظة ديالى، العراق، تحت تأثير أحمال ساكنة وديناميكية ناجمة عن أربعة زلازل بلغت ذروة تسارعها الأرضي 0.2 جي، لفترات زمنية تتراوح بين 15 و30 ثانية، باستخدام برنامج جيو ستوديو لسيناريوهات مختلفة. أشارت النتائج إلى أن العمود الحجري أدى إلى تحسن طفيف في عامل الأمان للمنحدر السفلي تحت تأثير الأحمال الساكنة. وقد أدى وجود العمود الحجري إلى تحسن ملحوظ في عامل الأمان خلال جميع الهزات الأرضية مقارنةً بغيابه.

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تفاصيل المقالة

القسم

Articles

كيفية الاقتباس

"تأثير الزلازل المتكررة على سد الأعظم الترابي" (2025) مجلة الهندسة, 31(12), ص 101–116. doi:10.31026/j.eng.2025.12.06.

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