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现行的评价指标及测试方法不能完全反映工作面环境质量的好坏，因此，本文依据劳动卫生学的要求，通过分析，建议用呼吸性粉尘浓度对时间和工作面长度的加权平均值作为环境质量的评价指标：依据离散传质和数学叠加的原理给出了新评价指标的计算方法和测量位置．实例计算表明，数学模型值与实测值基本一致．
The current evaluation index and test method can not fully reflect the quality of the working face environment quality, therefore, this article according to the requirements of labor hygiene, through analysis, it is recommended to use the concentration of respiratory dust on the time and face length weighted average as the environmental quality The evaluation index: According to the principle of discrete mass transfer and mathematical overlay, the calculation method and measurement location of new evaluation index are given. The calculation example shows that the mathematical model is basically consistent with the measured value.