团城铁矿多空区矿体开采技术研究

Research of Mining Techniques for Orebodies with Multi-Mined-out Areas in Tuancheng Iron Deposit

在研究采空区围岩冒落规律的基础上,提出并试验成功了"多空区矿体监控强采技术"、"活动空区边缘回收冒落残矿技术"、"巷道过散体层技术"与"斜面蹬碴落矿新型采矿方法",形成了一整套开采多空区矿体的技术体系,有效地回采了团城铁矿被空区破坏的矿体与残留矿体,延长了生产年限,取得了良好的经济效益与社会效益。

Based on the investigation of the wall rock caving law in mined-out areas and on the tests, a full set of technical system for mining the orebody with multi-mined-out areas was formed, including ＂technique of under-monitoring forced mining of orebody with multi-mined-out areas＂, ＂ technique for recovering caved residual ore at the edge of active mined-out area＂, ＂technique of drifting passing through loose body layer＂ and ＂new type sublevel caving with an inclined platform for drilling, blasting ＆ ore-passing. ＂ They have been used to effectively recover the orebodies destroyed by minedout areas and residual orebodies in Tuancheng Iron Mine, resulting in prolonged production life of the mine and good economic and social benefits.