Environmental Protection Analysis in Gold Mine Resource Exploration——Taking the LNG Gold Mine as an Example
The exploration and mining of gold mines usually cause pollution and damage to the mining environment.Tak-ing a gold mining area in Guizhou Province as an example,this paper mainly analyzes the geological conditions of the mining area,such as water inflow,drainage conditions,and geological disaster risks such as collapse,landslide,and falling blocks.The types and intensity of heavy metal pollution in mines based on leaching experiments are analyzed.The results indicate that collapses and landslides may occur in the process of gold exploration and mining,and the oxidation neutrali-zing slag and cyanide-containing waste residue generated in beneficiation may have an impact on the environment.Sugges-tions:① collapse and landslides may occur during the exploration and mining process of gold mines.Attention should be paid to handling dangerous rock slopes during mining,and reasonable construction and support methods should be adopted during excavation.② To avoid water pollution in the mining area,the elevation of each reservoir in the mining area is a-bove 410m,and flood interception ditches are built around the storage yard.The carbon leaching tailings pond adopts double artificial lining for seepage prevention,with a permeability coefficient of 10～12 cm/s.Pollution monitoring wells in the tailing storage area is set up to regularly monitor groundwater.③ Activities that endanger the safety of tailings such as blasting,quarrying,digging soil,indiscriminate excavation of tailings,and fish bombing are strictly prohibited in the reser-voir area.The analysis and research results of this paper can provide a reference for peers.④ Cyanide slag contains cya-nide,and oxidation slag contains calcium arsenate and iron arsenate,which belongs to the scope of the national hazardous to the treatment of dangerous rock masses on the slope when mining,and reasonable construction methods and support methods should be adopted during the excavation.
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