Spatial Distribution Characteristics and Genetic Mechanism of the Metasilicate-Rich Groundwater in Ji’nan Rock Mass Area, Shandong Province, China

Metasilicate-rich groundwater could meet the high demand of international community for high-quality water. In order to comprehensively analyze genetic mechanism metasilicate-rich groundwater, and help human communities effectively exploit utilize water resources, taking Ji’nan rock mass area as an example, this study carried out systematic research on spatial distribution Based regional hydrogeological conditions, influencing factors characteristics in were systematically sorted by means petrogeochemistry, hydrochemistry, chemical weathering index analysis, accumulation was discussed from perspective water-rock interaction. The results show that: (1) On northwest side part northeast mass, metasilicate content samples exceeded 25 mg/L; south, west, east sides relatively low; (2) is mainly composed gabbro easily weathered, with SiO2 degree showing obvious desilication. FeS2 developing along contact zones between surrounding rocks oxidized form H2SO4, which enhanced solubility silicate minerals groundwater. located low-lying position monocline structure, presented better conservation recharges conditions. above resulted accumulating showed different characteristics.