随着矿山电气化程度日益提高,杂散电流对矿山电气爆破安全的威胁日渐突出。武汉冶金安全技术研究所先后对几十个矿山的杂散电流进行了测定。统计了18个矿山共3200个测次,其中超过普通电雷管安全电流(50毫安)的有287次,占总数的9%。为保证电气爆破安全又不影响生产,就要研制抗 With the increasing degree of mine electrification, the threat of stray current to mine electrical explosion safety has become increasingly prominent. Wuhan Metallurgical Safety Technology Institute has dozens of mines stray current were measured. Statistics of a total of 32 mines in 18 mines, of which more than ordinary electric safety tube current (50 mA) has 287 times, accounting for 9% of the total. To ensure the safety of electrical blasting does not affect the production, we must develop anti-