کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5020295 | 1468680 | 2016 | 12 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Numerical analysis of a longwall mining cycle and development of a composite longwall index
ترجمه فارسی عنوان
تجزیه و تحلیل عددی از چرخه معدن چاه و توسعه یک شاخص لجن کامپوزیت
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
مهندسی ژئوتکنیک و زمین شناسی مهندسی
چکیده انگلیسی
Longwall mining is the most profitable and safe coal extraction method from deep seated deposits. Understanding the interaction between powered supports, surrounding rock and coal strata is the key for successful operation. In this respect, numerical modelling techniques provide great insight into the behaviour of shield support especially loading behaviour of hydraulic leg and canopy under different geo-mining conditions. This study proposes a methodology to incorporate the process of web-cutting into the modelling environment with the application of user-defined setting pressure. As a result, displacements, strains and stresses those developed in the shield and surrounding rock strata after web-cutting can be obtained for any pre-defined setting load. All together 216 three dimensional numerical models are analysed by varying different roof parameters and setting pressures. The paper also develops a statistical procedure to combine all input parameters into an index termed as “Longwall Index” for determination of axial strain and load that may develop on hydraulic legs of the powered support.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Rock Mechanics and Mining Sciences - Volume 89, November 2016, Pages 43-54
Journal: International Journal of Rock Mechanics and Mining Sciences - Volume 89, November 2016, Pages 43-54
نویسندگان
Sreenivasa Rao Islavath, Debasis Deb, Hemant Kumar,