Due to the small ventilation resistance and large cross section, the volume of airflow is large, and the fresh air is polluted by dust in the skip shaft during the real application.
Field application proved that the dust collector meets the design requirements and can be used into the underground metal mine for the purification of the inlet air from the main shaft or skip shaft.
Preparations were made for the development of the freeze wall for the site's second skip shaft. With all 45 freezes and temperature monitoring holes drilled and cased, freezing operations began in autumn 2016 in accordance with the project's development plan.
Gremyachinsky will have three mine shafts, including one man shaft and two skip shafts. According to Ivan Chekunov, the deputy technical director of Eurochem and the head of the department for facility construction, the depth of the shafts is 1,150 m.
Global Banking News-May 24, 2013--MMC Norilsk Nickel - The first stage of modernization of skip shaft
Uralkali recently completed a 273-mshaft-tubbing project, where a circular a shaft is lined with ductile cast Iron, on Skip Shaft
Even though plenty of what once stood here has since succumbed to the weather and crumbled away, there is still rich evidence of the work that went on, with disused skip shafts
, tramways and chimney stacks as far as you can see.
Now with Kazakhstan-backed IMR as its main shareholder, the company's first major international project has been at EuroChem's Gremyachinskoye potash project in southern Russia, where it was contracted to sink one of the two main skip shafts
. However, its chosen sinking method, involving pregrouting unstable ground rather than freezing the whole shaft depth, proved to be incapable of handling the very poor conditions encountered, and Shaft Sinkers withdrew from the project in April.