以地下厂房施工洞室群为研究对象，通过对目前地下洞室群施工中通风的主要影响因素的分析和风量、风压计算理论的研究，从实际的施工应用角度出发，确定出地下洞室群施工通风风量、风压的计算方法。利用已确定的施工通风风量与风压的计算方法，按照洞室群施工通风仿真原理，建立施工通风仿真计算体系。根据仿真计算体系计算出风量、风压等控制性因素，以此为依据进行通风设备的选择及通风方案的布置，并提出相应优化建议。

For researching the construction caverns of underground powerhouse， on the basis of the analyses of main affecting factors in construction ventilation and the study of air volume and air pressure calculating theory， and according to the actual construction and application，the calculating method of air volume and air pressure could be determined. Using the determined calculating method，according to simulation principle of cavern of underground powerhouse ventilation， the emulation calculation system of construction ventilation is established. From the emulation calculation system， the controlling factors of air volume and air pressure could be calculated. With the data， the ventilation equipment is chosen，the ventilation project arranged and a corresponding optimization suggestion presented. This paper could offer beneficial reference to similar engineering.