Application of strontium-tritium-carbon isotopes in groundwater of Chenjiahe River Basin
In order to study the replenishment,runoff,and discharge relationship of acidic coal mine wastewater in Chenjiahe River Ba-sin,based on detailed collection of previous hydrogeological and other data,this study was based on strontium,tritium,and carbon iso-tope analysis data from 50 sampling points(surface water and groundwater)and 50 sets of water samples(abandoned coal mine dis-charge points,hydrological wells,civilian wells,and spring water),combined with the actual situation on-site,mathematical statistics and other methods were used to analyze the spatiotemporal distribution characteristics of strontium,tritium,and carbon isotopes in Chenjiahe River Basin.Based on this,combined with meteorological conditions,terrain,lithology and other basin characteristics,the groundwater transportation and replenishment relationship in the region was revealed.The analysis results indicate that:the research area is mainly supplied by atmospheric precipitation and the source of supply is relatively distant;groundwater is located in a sandstone fissure aquifer system and is not affected by the carbonate water-bearing system,and the two are independent of each other;the sandstone fissure water-bearing rock group and the sandstone fissure water-bearing medium rich in silicate minerals undergo water rock interaction;groundwater has a significant impact on the main river channel,especially the downstream section.This may be due to the presence of a large number of abandoned coal mines on both sides of the river channel.Previously,coal mining roadways were used as advantageous channels to capture precipitation infiltration and recharge,leading to the mixing of groundwater and atmospheric precipitation.
Chenjiahe River Basinisotopesgroundwaterabandoned coal mineacid coal mine wastewater
NETL
NSTL
万方数据
