Theory and work methods for the cumulative effects of environmental geochemistry in the metallic deposit cluster

In this study, the concept of geochemical environmental cumulative effects of soil heavy metal pollution in the ore concentration area is proposed, and the influencing factors, types and research methods are systematically summarized based on consulting numerous papers concerning the cumulative environmental effect published both in China and abroad. The definition includes overall effects of comprehensive reactions between heavy metal elements which are harmful to the environment and the transference and precipitation of these elements in the special environment before, during and after mining . The influencing factors of cumulative effects are composed of pre-mining ore scale, ore-bearing rock, ore texture and structure, geographical environment, hydrological conditions, weathering conditions and mining methods and techniques. The types of cumulative effects are classified into eight types, such as time-crowded and space crowded effects. The results obtained by the authors have a great reference and guiding significance for the study of geochemical environmental cumulative effect.