Construction Method and Technology of Refuge Chamber for Emergency Refuge System in Underground Coal Mine

According to the problems of potential accidents caused by some unreasonable designs, inappropriate practice, et al, during the construction of emergen cy safety system's refuge chamber in underground coal mine.The author put forward that the cage used for lifting miners should be deployed in refuge chamber.The two airtight doors of refuge chamber avoid or reduce damage to the lift system in refuge chamber from the explosive blast.This would provide reliable escape way for perso n in distress at underground. The large capacity and high pressure vessels should not be used in refuge chamber, so that the injuries caused by the quality problems or mismanagement of the high pressure vessels could be avoided.As for refuge chamber located in low temperature coal and rock, the thermal insulation material should n't be flled between refuge chamber and coal or rock layers.On the contrary, thermal conductivity material should be used in order to facilitate heat dissipation of refuge chamber. Air compressor used in compressed air self-help system forbidden to be installed at underground, must be set on the ground.Pipeline for ventilating access to t he refuge chamber should be buried in roadway floor.Besides, the bleach and alum should be used to purify the drinking water in refuge chamber.Large capacity storag e battery cannot be used in refuge chamber.Mine cable dispatch communication system whose cables have been all buried should be connected to refuge chamber.