Analysis of coal gangue spontaneous combustion characteristics and application of fire prevention and extinguishing technology with grouting
The spontaneous combustion of coal gangue in the gangue discharge field in Baode Coal Mine seriously threatens the production of coal mine and pollutes the atmosphere environment.The oxidation reaction characteristics of gangue samples under different oxygen atmospheres were obtained by combination of programmed temperature and gas chromatography technology.The experiment showed that the decrease of oxygen concentration and temperature could effectively decrease the degree and possibility of gangue spontaneous combustion,thus providing a theoretical basis for on-site fire prevention and extinguishing.The fire prevention and extinguishing technology with grouting was used to control the fire area of gangue dump.The engineering test results showed that the diffusion radius of slurry in grouting holes was greater than 10 m,the fire extinguishing method with 3D grouting could effectively prevent air leakage and significantly reduce the temperature in the deep area,and the temperature in most areas had dropped below 50 ℃,and the control effect of the fire area was remarkable.
gangue spontaneous combustionfire prevention and extinguishinggrouting technologyfire area management
万方数据
维普
