BIOLOGICAL INHIBITOR FOR PREVENTING COAL SPONTANEOUS COMBUSTION, AND PREPARATION METHOD FOR BIOLOGICAL INHIBITOR

摘要

A biological inhibitor for preventing coal spontaneous combustion, and a preparation method for the biological inhibitor. The biological inhibitor comprises the raw materials in parts by weight: 0.01-2 parts of an aerobic microorganism, and 90-99 parts of a carrier, wherein the carrier is formed of mine sludge and an auxiliary additive, and the auxiliary additive is one or more of pulverized crop straw, wheat bran, and rice bran. The preparation method comprises: first culturing the aerobic microorganism to a grown stage and making same dormant, then mixing the mine sludge with the auxiliary additive uniformly to obtain the carrier, and then uniformly mixing the pretreated aerobic microorganism with the carrier to obtain the biological inhibitor. The biological inhibitor can effectively reduce the oxygen concentration in coal mine goafs, release carbon dioxide, and continuously prevent coal spontaneous combustion.