DEVELOPMENT OF DEPOSITS | |
Название | Technology of preparation and development of reserves of transitional area from open-cast to underground mining at Udachny mine |
Автор | Sokolov I. V., Smirnov A. A., Antipin Yu. G., Baranovskiy K. B., Kulminskiy A. S. |
Информация об авторе | Institute of Mining of Ural Branch of Russian Academy of Sciences (Ekaterinburg, Russia): Sokolov I. V., Head of Laboratory, Doctor of Engineering Sciences, e-mail: geotech@igduran.ru
“Yakutniproalmaz“ Institute (Mirny, Russia): |
Реферат | This article presents the technology of adjustment of reserves of transitional area of Udachny mine from open cast to underground mining. Extraction of reserves is carried out under ore or rock protective „bag“. Near-edge pillars of open pit, which form the upper part of area, are adjusted by sublevel caving system with front ore drawing by self-moving load-haul-dump machines with diesel engine drive with the sublevel height of 60 m. At the same time, only 30-40% of broken ore is extracted. The lower part of area, which includes pit reserves, is processed by the system of layer induced caving from one-stage extraction. Ore output is realized on areal trench bottom. At the same time, residual reserves of broken ore of upper sublevel are manufactured together with lower sublevel reserves. In this case, load-haul machines with electric drive are used for production and delivery of ore, which makes possible to decrease the required air amount significantly. There are presented the graphic schedules of ore extraction, according to which, reaching of project capacity of underground mine on the forth year of exploitation and its stable supporting are possible only with simultaneous working on two layers with high intensity of development and face-entry operations. This possibility is provided by mainly ore preparation of levels and application of combination cutting and loading machines. |
Ключевые слова | Transition area, open pit, underground mine, near-edge and pit reserves, sublevels, panels, development and face-entry drivages, ore crushing, front and areal output, technological equipment |
Библиографический список | 1. Sokolov I. V., Smirnov A. A., Antipin Yu. G., Kulminskiy A. S. Gornyi Zhurnal — Mining Journal, 2011, No. 1, pp. 63–66. |
Language of full-text | русский |
Полный текст статьи | Получить |