官地矿+970M水平开拓延深方案浅析

Disscussion on the +970 M Level Extension Development Layout in Guandi Mine

根据官地矿的实际情况，通过比较、分析，提出官地矿＋970水平开拓延深方案。

In accordance with specific condition of Guandi mine,puts forward the ＋970 level extentiondevelopment layout of Guandi mine by analysing and comparing.