煤矿尘肺病多年来严重威胁着矿工的身体健康，造成尘肺病的主要元凶是扩散在工作场所的呼吸性粉尘。综合机械化开采的工作面是产生呼吸性粉尘的重点区域之一，也是工人罹患尘肺病的重点区域。通常在工作面正常生产，防尘措施全负荷运转的情况下，呼吸性粉尘浓度依然高于规程的要求。所以监控工作面全工班呼吸性粉尘接触浓度，分析接尘危害水平，研究综采面粉尘运移规律，对于制定综合防尘措施具有极其重大的意义。 本文检测了陕西多个地区的煤矿综采工作面粉尘性质、监测了各工种呼吸性粉尘接触浓度，综合分析了工作面呼吸性粉尘危害水平，对比发现发现综采工作面粉尘危害大、工人呼吸性粉尘接触浓度高，尤其是采煤司机、移架工等受粉尘危害严重。 以综采工作面为研究对象，通过DesignModeler软件建立几何模型；Meshing软件划分计算网格；以ANSYS软件作为平台,将综采面风速以及呼尘运动分布情况进行了数值模拟。模拟结果与该区域各个工种接尘浓度一致，既验证了实测数据的正确性，也为综合防尘设施的优化提供了思路。 通过对模拟结果和检测数据的分析，得出综采工作面防尘应该以优化滚筒产尘措施和净化产尘源头为主。在对比各个综采煤矿现场与接尘危害水平的基础上，提出了综采工作面防尘设施的优化建议。

Dust lung is a bigger threat to miners’health for years,which caused by floating respiratory dust in work place.The fully-mechanized caving face is the key area of the emergence of respiratory dust and the miners’dust lung.Usually ,when it products normally while the dust prevention facilities operate at full load ，the dust concentrations are higher than the specified concentration. Therefor, it is necessary to monitor the whole class works’ individual respiratory dust concentrations and analyze the harm level of exposure to dust for working out the comprehensive prevention dust measures. It tests some dust characters , monitor each worker’s respiratory dust concentration and analyze the harm level of respiratory dust in coal mines of Shaanxi province. It can be concluded that harm level of dust and respiratory dust concentration is higher in full-mechanized caving face.Operators and prop-setters are at a higher level of exposure to dust and harm. Taking the fully-mechanized caving face as the research object. The geometry models were established by Design Modeler. The mesh was created by Meshing.Using ANSYS as plats simulate the wind speed and respiratory dust distribution in fully-mechanized caving face. Simulation results were same to the each workers’ respiratory dust concentration .The simulation validated the measured data and provided thinking of dust prevention facilities optimization. By analysing the simulation results and measured date, It can be concluded the keys are optimization shearer drum production dust facilities and purifying condition optimize of production dust source.The dust prevention facilities optimization measure in fully-mechanized caving face was came up by analysing the harm level of exposure to dust and the underground coal condition.