Abstract: Occupational noise deafness is a kind of hearing disorder characterized by sexual sounds formed by exposure to the productive noise over a long period of time during the working process.The time and intensity of exposure to noise,especially for the working yeares of noise are significantly related to occupational noise deafness.Taking an underground mine as the study example,the working noise of the underground rock drilling machine is treated by mobile noise controlling room,and the pecific technical parameters and functions of mobile noise controlling room are discussed.The field practice results show that the noise damage can be significantly reduced by using mobile noise controlling room,it can provide reliable reference for noise controlling of underground mines.

Key words: Occupational noise deafness, Underground mine, Rock drilling machine, Noise controlling room