کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
294474 511484 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
De-stressed mining of multi-seams: Surrounding rock control during the mining of a roadway in the overlying protected seam
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات زمین شناسی اقتصادی
پیش نمایش صفحه اول مقاله
De-stressed mining of multi-seams: Surrounding rock control during the mining of a roadway in the overlying protected seam
چکیده انگلیسی

Surrounding rock control in the overlying protective coal seam is a challenging topic for de-stressed mining of multi-seamed coal. Current research findings on roadway control were used in the design of a physical model of a complex textured roof having a varying thickness. The model was used to study roadway instability and collapse caused by dynamic pressure. The results show that when the thickness of the roof exceeds the bolted depth the roadway security is least and the roof has the greatest possibility for collapse. Numerical simulations were also carried out to study stress redistribution before and after roadway excavation during underlying protective seam mining. The evolution of roadway displacement and fracture, as affected by support methods, has been well studied. A series of support principles and technologies for mining affected roadways has been proposed after demonstration of successful practical application in the Huainan Mines. These principles and technologies are of extended value to deep coal mining support in China.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Mining Science and Technology (China) - Volume 21, Issue 2, March 2011, Pages 159–164
نویسندگان
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