深海多金属硫化物开采技术发展现状与展望

    Current Status and Future Prospects of Mining Technologies for Seafloor Massive Sulfides

    • 摘要: 为应对陆地关键金属供需矛盾与深海矿产资源开发的战略需求,深海多金属硫化物(Seafloor Massive Sulfides, SMS)因富含铜、锌、金、银等金属而备受关注。然而,深海热液区复杂的地形地貌及其独特的生态系统对绿色、低扰动开采技术提出了严峻挑战。本文系统梳理了深海多金属硫化物开采技术的发展历程与现状,分析了从早期的拖斗、链斗、穿梭艇式到管道提升开采系统的技术演进路径,并比较分析了履带式与垂直式两类采矿装备的技术特点与应用前景。尽管目前针对深海多金属硫化物资源的开采技术在进步,但商业化开采仍面临着深海集矿装备在海床行走的稳定性、扬矿系统中提升管道的堵塞和磨损、采矿过程中作业羽流引起的潜在深海生态风险等技术挑战。基于此,未来深海多金属硫化物采矿技术将趋向于智能化、低扰动、全系统协同的作业体系,其核心在于实现海底集矿装备的精准化与低扰动化、提高管道提升输送系统的可靠性、增强水面多功能支持平台的适应性,并建立基于监测与预测的环境响应与调控机制。本文从技术研究、系统改进与国际合作等角度提出建议,包括推进关键装备和部件的工程验证,构建采矿-输送-监测一体化系统结构,并在国际海底管理局对深海采矿的相关管理规则中加强技术和数据贡献,以形成稳定可预测的监管环境,从而为推动我国深海多金属硫化物绿色采矿技术的工程化与商业化发展提供参考。

       

      Abstract: To address the growing imbalance between terrestrial metals supply and market demand, alongside the strategic need for deep-sea mineral resource exploitation, seafloor massive sulfides (SMS) have attracted increasing attention due to their marked enrichment in copper, zinc, gold, and silver. However, the complexity of topography and fragile benthic ecosystems in submarine hydrothermal fields present critical impediments to developing environmentally sustainable and low-disturbance mining technologies. In this paper, the development history and current status of SMS mining technologies are systematically reviewed, the technological evolution path from the early systems such as drag bucket, bucket-chain, and shuttle-based mining to the modern pipe-lift mining systems is systematically analyzed, while the technical characteristics and application prospects of crawler-type and vertical-type mining equipment are well evaluated. Although there have been recent technological advancements commercial-scale mining remains constrained by numerous technical challenges, such as the limited traction stability of seafloor mining vehicles on steep topographies, particle clogging and pipe wall erosion within the ore lifting system and the potential ecological risks driven by sediment plume dispersion during mining operations. Consequently, the future mining technologies would tend to build a new mining system that is intelligent, minimal disruptive and full collaborative. Achieving this requires improving the precision and low-disturbance performance of seabed mining apparatus, enhancing the mechanical reliability of vertical transport systems, strengthening the adaptability of surface multi-functional support platforms and establishing an integrated environmental management framework including monitoring, prediction and regulation. To accelerate this transition, several suggestions are proposed across technological innovation, system optimization and international cooperation, including advancing the engineering validation of key equipment and components, developing a system architecture that integrates mining, hauling and monitoring into a unified framework and data contributions within the International Seabed Authority regulatory framework to support a transparent, predictable regulatory environment. All these initiatives aim to provide a reference basis for promoting green, commercial-ready SMS mining technologies for China.

       

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