Hydrogeochemical research on the mixture effect of groundwater in unconsolidated sediments and groundwater in coal-bearing sandstones

Prevention of groundwater in unconsolidated sediments from bursting into the coal mine is the main objective of water control in the Qidong coal mine.The key to the problem is to locate correctly the exit points of water and the sources of water.Hydrogeochemical research on the mixture effect of groundwater from the unconsolidated sediments and groundwater from the coal-bearing sandstones is carried out.The characteristic ions of an obvious change are found out by comparison and analysis methods...