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| 1 | Investigating different methods used for approximating pillar loads in longwall coal mines显示文摘Accurately estimating load distributions and ground responses around underground openings play a significant role in the safety of the operations in underground mines.Adequately designing pillars and other support measures relies highly on the accurate assessment of the loads that will be carried by them,as well as the load-bearing capacities of the supports.There are various methods that can be used to approximate mining-induced loads in stratified rock masses to be used in pillar design.The empirical methods are based on equations derived from large databases of various case studies.They are implemented in government approved design tools and are widely used.There are also analytical and numerical techniques used for more detailed analysis of the induced loads.In this study,two different longwall mines with different panel width-to-depth ratios are analyzed using different methods.The empirical method used in the analysis is the square-decay stress function that uses the abutment angle concept,implemented in pillar design software developed by the National Institute for Occupational Safety and Health(NIOSH).The first numerical method used in the analysis is a displacement-discontinuity(DD)variation of the boundary element method,LaModel,which utilizes the laminated overburden model.The second numerical method used in the analysis is Fast Lagrangian Analysis of Continua(FLAC)with the numerical modeling approach recently developed at West Virginia University which is based on the approach developed by NIOSH.The model includes the 2D slice of a cross-section along the width of the panel with the chain pillar system that also includes the different stratigraphic layers of the overburden.All three methods gave similar results for the shallow mine,both in terms of load percentages and distribution where the variation was more obvious for the deep cover mine.The FLAC3D model was observed to better capture the stress changes observed during the field measurements for both the shallow and deep cover cases.This study allowed us to see the shortcomings of each of these different methods.It was concluded that a numerical model which incorporates the site-specific geology would provide the most precise estimate for complex loading conditions. | Deniz Tuncay a Ihsan Berk Tulu a Ted Klemetti | 2021 | International Journal of Mining Science and Technology2021，31，1： | 2 |
| 2 | Zinc for treating of children and adolescents with attention-deficit hyperactivity disorder: a systematic review of randomized controlled clinical trials显示文摘 | Ghanizadeh A Berk M | 2013 | Eur J Clin Nutr2013，67，1： | 1 |
| 3 | Using the 360 degrees multisource feedback model to evaluate teaching and professionalism显示文摘 | Berk R A | 2009 | Med Teach2009，31，12： | 1 |
| 4 | Assessment of pain control, quality of life, and predictors of success after gamma knife surgery for the treatment of trigeminal neuralgia 显示文摘 | Jawahar A Wadhwa R Berk C | 2005 | Neurosurg Focus2005，18，5： | 1 |
| 5 | Status of atmospheric correction using a MODTRAN4-based algorithm显示文摘 | MATTHEW M W ADLER-GOLDEN S M BERK A | 2000 | Proc SPIE2000，4049，： | 1 |
| 6 | Study of supported molybdenum catalysts for reduction of SO2 with CH4 : Effect of sulfidation method显示文摘 | Mulligan D J Tan K Berk D A | 1995 | Can J Chem Eng1995，73，： | 1 |
| 7 | Premature ejaculation treated by local penile anaesthesia in an uncontrolled clinical replication study显示文摘 | Slob A van Berke A van der Werff | 2000 | J Sex Res2000，37，3： | 1 |
| 8 | Optimal Timing of Surgical Intervention Follow ing Adult Laryngeal Trauma显示文摘 | Mendelsohn A H Sidell DR Berke GS | 2011 | Laryngoscope2011，121，10： | 1 |
| 9 | Atmospheric correction of spectral imagery:Evaluation of the FLAASH algorithm with AVIRIS data显示文摘 | MATTHEW M W ADLER-GOLDEN S M BERK A | 2003 | Proc SPIE2003，5093，： | 1 |
| 10 | The Noxa/ Mcl-1 axis regulates susceptibility to apoptosis under glu- cose limitation in dividing T cells 显示文摘 | ALVES N L DERKS I A BERK E | 2006 | Immunity2006，24，6： | 1 |
| 11 | A universal result in almost sure central limit theory显示文摘 | BERKES I CS(A)KI E | 2001 | Stochastic Process Appl2001，94，1： | 1 |
| 12 | Preparation and reactivity of Rh nanoparticles on TiO2(110)-(1×2) surface显示文摘 | A Berkó J Szkodblac F Solymosi | 2001 | Solid State Ionics2001，，： | 1 |
| 13 | Efficacy of occlusion treatment in amblyopia and clinical risk factors affecting the results of treatment显示文摘 | ARIKAN G YAMAN A BERK A T | 2005 | Strabismus2005，13，2： | 1 |
| 14 | Remote bathymetry of the littoral zone from AVIRIS,LASH,and quickbird imagery显示文摘 | ADLER-GOLDEN S M ACHARYA P K BERK A | 2005 | IEEE Transactions on Geoscience and Remote Sensing2005，43，2： | 1 |
| 15 | Thrombolysis in Myocardial Infarction (TIMI) Trial--phase I: hemorrhagic manifestations and changes in plasma fibrinogen and the fibrinolytic system in patients treated with recombinant tissue plasminogen activator and streptokinase显示文摘 | Rao AK Pratt C Berke A | 1988 | J Am Coil Cardiol1988，11，1： | 1 |
| 16 | A randomized,double-blind,placebo-controlled trial of a beta-hydroxyl beta-methyl butyrate,glutamine,and arginine mixture for the treatment of cancer cachexia(RTOG 0122)显示文摘 | Berk L James J Schwartz A | 2008 | Support Care Cancer2008，16，10： | 1 |
| 17 | Long-term safety andefficacy of empagliflozin, sitagliptin, and metformin: anactive-controlled, parallel-group, randomized, 78-week open-label extension study in patients with type 2 diabetes 显示文摘 | Ferrannini E Berk A Hantel S | 2013 | Diabetes Care2013，36，12： | 1 |
| 18 | Angiotensin II signal trausduction in vascular smooth muscle: role of tymsine kinases显示文摘 | Berk B C Corson M A | 1997 | Circ Res1997，80，6： | 1 |
| 19 | Basal cell carcinoma- treatments for the commonest skin cancer 显示文摘 | Berking C Hauschild A Kt:lbl O | 2014 | Dtseh Arztebl Int2014，111，22： | 1 |
| 20 | Zinc for treating of children and adolescents with attention-deficit hyperactivity disorder:a systematic review of randomized controlled clinical trials 显示文摘 | Ghanizadeh A Berk M | 2013 | Eur J Clin Nutr2013，67，1： | 1 |
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