大直径深孔阶段空场嗣后充填法侧向崩矿新方法的应用研究

Research on application of new approach for lateral caving with large-diameter and deep-hole sublevel open stoping with delayed

根据柿竹园矿柴山工区矿体倾角、厚度及围岩性质,通过对几种采矿方法的比较、分析,决定采用大直径深孔阶段空场嗣后充填法,并在此基础上提出了一种侧向崩矿的新方法,即在矿房北端布置一条切割天井,以切割天井为自由面进行底部拉底和侧向切割立槽。详细介绍了该方案的采场要素及工艺过程,给出了试验爆破参数、装药结构以及起爆方式;并对新方案的应用提出了一些问题和建议。

Several mining methods were compared and analyzed in accordance with the inclination and thickness of orebody and nature of surrounding rock in Shizhuyuan area of Chaishan Mine. The method of lateral caving with large-diameter and deep-hole sublevel open stoping with delayed filling was adopted and on this basis, a new approach of lateral caving was proposed by providing a cutting raise at the northern end of chamber as free surface to make undercutting at the bottom and lateral slot cutting. The pa- per gives a detailed description of the stope elements and process for the approach and provides blasting parameters used in the tests and charging structure as well as the detonating way. Ques- tions and suggestions for application of the new approach are put forward.