桃冲铁矿采空区处理方法研究

结合桃冲铁矿井下空区赋存状态，分析了顶板围岩的可冒性以及冒落危害的程度，提出并实施了扩展采空区顶部面积、诱导采空区顶板围岩自然冒落的采空区处理技术，实现了并下空区冒落无事故、空区残留矿量得到安全回收的良好效果。

STUDY ON TREATMENT METHOD OF THE MINED AREA IN TAOCHONG IRON MINE

In consideration with the practical conditions of the underground mined area in TAOCHONG,the possibility of caving in with the hanging wall and the potential damages are analyzed.A new technique about expanding the ceiling area of mined area and inducing the hanging wall to cave in itself is used.The technique is eventually proved successful as no accident happened during the caving in and the remnant ore in the mined area is recovered safely. Hanging wall foot wal mined area property mined area underground the oreing.In combination with the pratical conditions of Taochong mine,the dangerous factors and degree have been analyzed.A new method of entrapping rockfall was put forward.The practice show that the method have better safty,and the iron ores have been fully mined in pratice.