Key Technology Research on the Efficient Exploitation and Comprehensive Utilization of Resources in the Deep Jinchuan Nickel Deposit

• Published in: Engineering (Beijing, China) Vol. 3; no. 4; pp. 559 - 566
• Main Author: Yang, Zhiqiang
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 01.08.2017; State Key Laboratory for Comprehensive Utilization of Nickel and Cobalt Resources, Jinchang, Gansu 737100, China; Jinchuan Group Co., Ltd., Jinchang, Gansu 737100, China; Elsevier
• Subjects: Comprehensive utilization; Deep mining; Efficient exploitation; Key technology; Deep mining; Key technology; Efficient exploitation; Comprehensive utilization
• ISSN: 2095-8099
• DOI: 10.1016/J.ENG.2017.04.021

To understand the resource features and geology in the deep Jinchuan nickel deposit, difficult geological conditions were systematically analyzed, including high stress, fragmentized ore rock, prevalent deformation, difficult tunnel support, complicated rock mechanics, and low mining recovery. An integrated technology package was built for safe, efficient, and continuous mining in a deep, massive, and complex nickel and cobalt mine. This was done by the invention of a large-area continuous mining method with honeycomb drives; the establishment of ground control theory and a technology package for high-stress and fragmented ore rock： and the development of a new type of backfilling cement material, along with a deep backfilling technology that comprises the pipeline transport of high-density slurry with coarse aggregates. In this way, good solutions to existing problems were found to permit the efficient exploitation and comprehensive utilization of the resources in the deep Jinchuan nickel mine. In addition, a technological demonstration in an underground mine was performed using the cemented undercut-and-fill mining method for stressful, frag- mented, and rheological rock.