为形成回采工作面,首先要完成巷道的掘进,掘进巷道一般选择两向或是三向通风系统方式。在进行矿井的通风网络解算时,传统的方法一般是对于联络巷采取若干条合并为一条的方式来进行粗略化简。然而这种简化方式得到的等效风阻的准确度有待商榷。提出了一种新的快速迭代风阻化简的方法来处理这种情况,新方法不仅可以准确地得到系统的等效风阻值,而且通过回溯迭代过程,又可将每条巷道的分风量尤其是通过每条联络巷的漏风量计算出来。
In order to form the retreat working face, the entry system should be developed firstly. 1he traditional method is to use single one crosscut instead of a group of crosscuts to simplify the complex ventilation network. But this method is just an approximate algorithm to determine the equivalent resistance and accordingly other ventilation parameters, such as air dis tribution quantity, air leakage quantity and so on, would not be calculated correctly based on these equivalent resistances. This paper present a new algorithm to simplify the ventilation network encountered in the panel development operations and by using this method, not only the equivalent resistances could be calculated easily and correctly, but also the airflow distri butions in the system and the leakages through the crosscuts can be analytically determined following a backward iterative process.