کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
275410 507687 2016 4 صفحه PDF ندارد دانلود رایگان
عنوان انگلیسی مقاله
Void fill techniques for stabilizing roof conditions during longwall recovery
ترجمه فارسی عنوان
تکنیک پر کردن خلاء برای برقراری ثبات در شرایط سقف در طول بازیابی جبهه کار
کلمات کلیدی
معدن جبهه کار ؛ بازیابی جبهه کار بلند؛ پر کردن خلاء؛ بازیابی غیر سنتی
Longwall mining; Longwall recovery; Void fill; Non-traditional recovery
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات زمین شناسی اقتصادی
چکیده انگلیسی

It has been proven that longwall faces can be moved safely and efficiently. However, abutment pressures and poor ground control conditions can halt operations and be hazardous to coal miners. Recently at a mine in Southwestern Pennsylvania, roof material collapsed above shields that created two large voids and caused major challenges for shield recovery. A unique, engineering solution was developed that utilized a modified concrete material to fill the voids, creating stability in the affected area. The many phases of this project included the construction phase, void pumping, cutting out, and bolting of the concrete material. This project eliminated the hazards associated with bolting the recovery face and removing shields in adverse conditions, making it possible for the mine operator to safely complete the longwall move.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Mining Science and Technology - Volume 26, Issue 1, January 2016, Pages 119–122
نویسندگان
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