Simulating Experiments Approaching the Impact on Groundwater from the Filling-in Underground in Coal Mine with Gangue

概要

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In order to discuss the possibility of the filling-in the underground caves with gangue with a largescale, and based on Pingdingshan coal mine area, a case study is carried on to approach the impact onthe groundwater from coal solid wastes after the filling-in. Materials used in the experiments arecollected from the gangue hill of the 12th mine of the Pingdingshan Coal mine Group. Theexperiments are mainly designed to stimulate the stripping characteristics or laws of the component ofgangue when it is submerged in coal mine groundwater under the hydrostatic condition. Indicesdetected in the experiments include pH, F- and heavy mental elements include Cd2+, Cr6+, Zn2+, Mn2+,Pb2+, Cu2+. The results indicate that the main influence on the ground water comes from pH and F-,whilst the other indices coincide the national standard.