دراسة الانزلاقات الأرضية في المناطق الجبلية في الجزء الجنوبي من السلسلة الساحلية ـ آلية حدوثها وانعكاساتها على المنشآت الهندسية في تلك المناطق
Abstract
يَتناول هذا البحث دراسة جيوهندسية لمنطقة الانزلاق الأرضي الحاصل على طريق الكورنيش الجنوبي في صافيتا (سورية) من خلال إجراء مسح جيوهندسي لتحديد أبعاد المنطقة المهددة بالانزلاق، وتحديد أماكن البازلت ودرجة فساده وتحوله إلى غضار ورمال، وقد نفذت من قبلنا أربعة قطاعات (سبور) وثمانية مقاطع جيوهندسية في منطقة الدراسة، و بالتالي أمكن التوصل إلى تقسيم الصخور في منطقة الدراسة إلى خمس وحدات جيوهندسية، إلى أن درجة فساد الصبَّات البازليتة النيوجينية الوسادية تزداد مع ارتفاع درجة تشبعها بالماء، إذ بلغ تطور الفساد في أسفل هذه الصبات أعلى درجاته مؤدياً إلى تشكل طبقة غضارية تبدو مسؤولة عن الانزلاق الأرضي في منطقة الدراسة، وقد أظهرت أعمال الحفر في منطقة الدراسة أنّها متأثرة بمستويات ضعف أهمها وجود فالق غير متكشف على السطح أمكن تحديده من خلال الدراسات الجيوفيزيائية.
This paper is a geo-engineering study of ground slide area that occurred on the South Cornish in Safita, Syria, through making a geo- engineering survey to determine the dimensions of the threatened areas, and to determine the Basalt corruption rate and its transforming to dust and sand. We divided the study area to four sectors and eight geo- engineering sections. In this way we were able to divide the rocks into five geo- engineering units. The corruption rate of the Basalt pillow infusions increases with the increase in the rate of its water refection where the development of the corruption, in the bottom of the infusion, has reached its highest degrees leading to the formation of a dusty layer that seems responsible of the ground slides of the area. Besides, the digging in the study area has shown that it is affected by levels of weakness, the most important of which is the existence of an unrevealed break on the surface determined by the geo- engineering studies.
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