Engineering-geocryological investigations were held in Cherskii settlement. It located on the right shore of Kolyma river, presenting one of the largest ports on it, supporting many gold and tin mines of Chukotka regi...Engineering-geocryological investigations were held in Cherskii settlement. It located on the right shore of Kolyma river, presenting one of the largest ports on it, supporting many gold and tin mines of Chukotka region. The site was built up during mass Arctic researches and developed as a centre of Arctic expedition s infrastructure and a support base on the North Marine Way in 1970-1980s years, before new rules of permafrost engineering were accepted. About 30 ferroconcrete panel buildings were built up. A wide infrastructure including roads, aerodrome and naval port were built. 2003 investigations revealed about 30% of panel buildings deformed. The reasons of the phenomenon are submitted in the article.展开更多
Studies were taken of ore-bearing rocks, ores and gravity concentrates from Natalka gold deposit by a set of complex methods including mineralogical, petrographic and geochemical research, gravity concentration, and e...Studies were taken of ore-bearing rocks, ores and gravity concentrates from Natalka gold deposit by a set of complex methods including mineralogical, petrographic and geochemical research, gravity concentration, and electronic microscopy. The major form of Au found is native: free gold is larger and dispersed, in the form of microinclusions. The obtained results are the basis for an effective technology to extract gold and sequence of profitable mining of Natalka deposit.展开更多
文摘Engineering-geocryological investigations were held in Cherskii settlement. It located on the right shore of Kolyma river, presenting one of the largest ports on it, supporting many gold and tin mines of Chukotka region. The site was built up during mass Arctic researches and developed as a centre of Arctic expedition s infrastructure and a support base on the North Marine Way in 1970-1980s years, before new rules of permafrost engineering were accepted. About 30 ferroconcrete panel buildings were built up. A wide infrastructure including roads, aerodrome and naval port were built. 2003 investigations revealed about 30% of panel buildings deformed. The reasons of the phenomenon are submitted in the article.
文摘Studies were taken of ore-bearing rocks, ores and gravity concentrates from Natalka gold deposit by a set of complex methods including mineralogical, petrographic and geochemical research, gravity concentration, and electronic microscopy. The major form of Au found is native: free gold is larger and dispersed, in the form of microinclusions. The obtained results are the basis for an effective technology to extract gold and sequence of profitable mining of Natalka deposit.
