دورية أكاديمية
Istraživanje modeliranja prostorno dinamičke strukturne mehanike i prostorno-vremenske evolucije iskopa ugljenokopa ; Research on modelling of spatial dynamic structural mechanics and spatio-temporal evolution of coal mine stopes
| العنوان: | Istraživanje modeliranja prostorno dinamičke strukturne mehanike i prostorno-vremenske evolucije iskopa ugljenokopa ; Research on modelling of spatial dynamic structural mechanics and spatio-temporal evolution of coal mine stopes |
|---|---|
| المؤلفون: | Wen, Zhi-jie, Rinne, Mikael, Song, Zhen, Han, Zuo-zhen, Wen, Jin-hao |
| المصدر: | Technical Gazette; Vol.22 No.3; ISSN 1330-3651 (Print); ISSN 1848-6339 (Online) |
| بيانات النشر: | Faculty of Mechanical Engineering in Slavonski Brod, Faculty of Electrical Engineering in Osijek, Faculty of Civil Engineering in Osijek |
| سنة النشر: | 2015 |
| المجموعة: | Hrčak - Portal of scientific journals of Croatia / Portal znanstvenih časopisa Republike Hrvatske |
| مصطلحات موضوعية: | dinamička struktura, iskop, prostorno-temporalna evolucija, stabilnost, dynamic structure, spatiotemporal evolution, stability, stope |
| الوصف: | Velike pogibeljne nesreće u ugljenokopima u osnovi se pripisuju nedovoljnom razumijevanju ili propustu stvaranja potpunog prostornog strukturnog mehaničkog modela iskopa tijekom eksploatacije kao i prostornom gibanju do kojeg je tijekom vremena došlo zbog samog iskapanje, iskapanja u krivo vrijeme, kao i neodgovarajućeg održavanja kolnika i pomicanja radne površine. U svrhu učinkovitog proučavanja i analize mehanizma zbog kojeg dolazi do velikih nesreća, primijenjena je metoda zasnovana na praćenju naprezanja i pomicanja iskopa da bi se izveo postupak koji dovodi do loma gornjih slojeva, te je dalje predložena metoda utvrđivanja stabilnosti iskopa na temelju kvalitativne identifikacije dinamike. Proučavanjem se ustanovilo da se stabilnost iskopa tijekom vađenja rude može podijeliti u dvije faze: (1) nesigurna faza t.j. udaljenost za koju je radna površina pomaknuta Lx < širine radne površine L0; (2) sigurna faza t.j. udaljenost za koju je radna površina pomaknuta Lx > širine radne površine L0. Ti rezultati istraživanja čine osnovu za razumno određivanje odnosa prostor-vrijeme u postupku rudarenja. ; Major hazardous accidents in coal mines are basically attributable to a lack of understanding of or the failure to establish a complete spatial structural mechanical model of the stope during the course of exploitation, as well as of the spatial movement over time caused by the mining itself, mining at the wrong time, as well as improper roadway maintenance and advance of the work face. To efficiently study and analyze the mechanism behind major stope disasters, a method based on monitoring the stress and displacement of stopes was adopted to deduce the process whereby the overlying strata fracture, and a method of ascertaining stope stability based on qualitative identification of the dynamics was further proposed. The study found that the stability of stopes during the process of mining the face can be divided into two stages: (1) Unstable stage: i.e. the distance the work face has advanced Lx < width of ... |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | Croatian English |
| العلاقة: | http://hrcak.srce.hr/139743Test; http://hrcak.srce.hr/file/206158Test; http://hrcak.srce.hr/file/206159Test |
| الإتاحة: | http://hrcak.srce.hr/139743Test http://hrcak.srce.hr/file/206158Test http://hrcak.srce.hr/file/206159Test |
| حقوق: | info:eu-repo/semantics/openAccess |
| رقم الانضمام: | edsbas.827DBE02 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |