我矿童家院区通风系统的改造与评价

Transforming and evaluating for mine ventilation system of Tong Jiayuan district of A mine

介绍了锡矿山矿务局北矿童家院区北风井通风系统建立的过程，对北风井通风系统投产运行的实际效果进行了评价。

This paper introduces the process of establishin g the North ventilation shaft ventilation system of Tong Jiayuan district of Nor th mine,Xi Kuangshan bureau of mines,evaluate practice effect of the North venti lation shaft ventilation system in running.