کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
276537 1429541 2014 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Analysis of stability of support and surrounding rock in mining top coal of inclined coal seam
ترجمه فارسی عنوان
تجزیه و تحلیل پایداری حمایت و سنگ اطراف آن در ذغال سنگ ذغال سنگ ذغال سنگ شیب دار
کلمات کلیدی
جوش زغال سنگ شیب دار، جنبش سقف، مدل مکانیکی، ثبات
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات زمین شناسی اقتصادی
چکیده انگلیسی

The study analyzes the characteristics of roof movement in mining top coal of inclined coal seam, and establishes the mechanical model of support and surrounding-rock stability in inclined coal seam. Besides, this study carries out the numerical calculation and field observation of roof movement and support stability, and provides the critical control measures. The results show that the fracture firstly appears in middle-upper roof and extends upwards in top coal caving in inclined coal seam; regular and irregular caving zones appear in middle-upper stress concentration region, and the asymmetric caving arch is finally formed. Support load of middle-upper working face is larger than that of the middle-lower face; dynamic load coefficient of upper support is large, and the load on the front of support is larger than that on the rear of it, which leads to poor support stability. Stability of support and surrounding-rock system depends mainly on upper-support stability.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Mining Science and Technology - Volume 24, Issue 1, January 2014, Pages 63–68
نویسندگان
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