RESEARCH ON DISCHARGE SPARK SAFETY OF EQUIVALENT RECEIVING ANTENNA OF UNDERGROUND METAL STRUCTURE

The metal structures distributed in underground coal mine roadways can be equivalent to wac 4011 the receiving antenna to absorb electromagnetic wave energy and release the energy in the form of discharge sparks under specific conditions.The accumulated energy has the risk of igniting explosive gas.In order to solve the problem, the conditions of i

Abstract Background One-third of individuals who sustain an acute lateral ankle ligament sprain suffer significant disability due to pain, functional instability, mechanical instability or recurrent liftmaster csl24ul gate control sprain after recovery plateaus at 1 to 5 years post injury.The identification of early prognostic factors associated wi