一、概况向山硫铁矿开采具有氧化自燃性能的黄铁矿床已40余年了。矿床赋存于火山岩和闪长岩的接触带中,平均含硫品位为15～18％,覆盖层厚度为15～30米,矿石松软,不稳定,呈粉状和节理发育的块状产出,普氏硬度系数f=1～2及f=2～4。围岩不稳固。采用的采矿方法,解放前为低分段分段崩落 First, an overview of the pyrite to the mountain pyrite pyrite oxidation performance has been more than 40 years. The deposits occur in the contact zone of volcanic rocks and diorites with an average sulfur content of 15-18% and a cover thickness of 15-30 meters. The ore is soft and unstable with massive output with powdery and joint development , Props hardness coefficient f = 1 ~ 2 and f = 2 ~ 4. Surrounding rock unstable. Mining methods used, before the liberation of sub-sub-low-subsidence