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一、矿床赋存条件及壁式采矿法龙烟铁矿属于宣龙式矿床,是浅海沉积的层状缓倾斜中厚矿床。走向东西延伸约12公里,倾向南延深500多米,倾角30°左右。矿床有三个分层,议一层矿为主,是鲕状赤铁矿,矿层东厚西薄。直接顶板系中等稳定及不稳定的黑色页岩,底板系薄层硅质页岩,顶底板与矿层分界明显。该矿过去长期普遍应用走向长壁采矿法。采准是在各阶段内(阶段高30米),以大断层作边界,分为若干个块段——其走向长约20～60米。在各阶段内,开底盘沿脉平巷,在此巷内向斜上方以45°～50°的坡度作溜矿溜子。在平巷南帮以15°上行坡度作穿脉巷——安全口。切割是在块段内,于溜子上端向两边开脉内切割巷
First, the deposit conditions and wall mining method Longyan iron ore belongs to the Xuanlong deposit, shallow-bedded sedimentary layered gently inclined thick deposits. To extend about 12 km east-west, south slope of more than 500 meters inclination, inclination of about 30 °. The deposit has three strata, a layer of ore-based discussion, is oolitic hematite, the thickness of the east and west thin. The direct roof system is medium stable and unstable black shale. The bottom plate is thin siliceous shale. The top and bottom plates are obviously separated from the ore layer. The mine in the long-term widespread application of longwall mining law. Acquisition is in all stages (stage 30 meters high), with large faults as the border, divided into several blocks - the length of about 20 to 60 meters. In all stages, open the chassis along the veins Lane, in the alley above the slope of 45 ° ~ 50 ° slope for slipping. South Lane in the alley to help 15 degrees uphill gradient for wear arteries Lane - Safety Exit. Cutting is in the block, in the upper end of the slide to open both sides of the road to open the lane