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(一)采矿方法的产生和发展向山硫铁矿属极厚扁豆状矿体,水平厚度150～200米,沿走向长900米。矿石松软不稳固,节理发育,f=1～2及4～6。矿石类型以浸染状黄铁矿为主,平均含硫15～18％,多夹石,需分级出矿。矿石具有氧化、自燃和结块性质。矿体围岩为不稳固的火山岩,上盘为凝灰岩,粗面岩。下盘为安山岩、闪长岩。易于崩落。矿体复盖岩层由冲积层、粘土和风化铁帽等组成,垂直厚度30～50米。细碎、易结块、不稳固、易于崩落。
(A) the emergence and development of mining methods Mountain pyrite is extremely thick lentil ore body, the horizontal thickness of 150 to 200 meters, along the long 900 meters. Ore loose soft instability, development, f = 1 ~ 2 and 4 ~ 6. Ore pyrite type disseminated dominated, with an average of 15 to 18% sulfur, more gravel, the need to grade ore. Ore has oxidation, spontaneous combustion and agglomeration properties. Surrounding rocks of the ore body are unstable volcanic rocks, and the upper plate is tuff and trachyte. Under the plate for the andesite, diorite. Easy to fall. Ore cover rock by the alluvial layer, clay and weathered iron cap and other components, the vertical thickness of 30 to 50 meters. Finely crushed, easy caking, unstable, easy to fall.