Complex approach to evaluating the underground hydrosphere stability for the urbanized areas in the Angara river basin (East Siberia, Russia)

Prospects Mining and Metallurgy Industry Development

Auzina, L.I.^1 ; Lonshakov, G.S.^1

Irkutsk National Research Technical University, Russia^1

关键词: Environmental measures;    Geological environment;    Hydrogeological conditions;    Infrastructure growth;    Sedimentary covers;    Stability indices;    Stability margins;    Technogenic impact;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/229/1/012005/pdf
DOI  :  10.1088/1755-1315/229/1/012005

来源: IOP

【 摘 要 】

The development of East Siberia is accompanied by the urban population and infrastructure growth, which in turn, leads to an increase in the intensity of the technogenic impact on the geological environment (GE). One of the most unstable GE components is the underground hydrosphere. In hydrogeological terms, the research area is located within the Angara-Lena artesian basin. The sedimentary cover of the area has a block structure, which, along with the erosion network predetermines the formation of the current hydrogeological conditions. The article considers the key factors for evaluating the complex index of the hydrosphere stability. There are three groups distinguished: natural factors forming the stability margin, technogenic factors causing the underground hydrosphere evolution, and natural-technogenic factors reflecting the ongoing evolution. The article focuses on the first group concerning evaluation of the drainage degree and the model filtration cross-sections stability. Ecological-hydrogeological zoning of the areas under research based on the complex hydrosphere stability index allows us to mark out the sites where environmental measures are required to prohibit the urbanization negative impact.