论文部分内容阅读
本文介绍浅孔房柱法、下向分段切顶预锚中深孔房柱法和长锚索预锚短锚杆联合护顶中深孔房柱法的回采工艺和它们的控顶技术。生产实践证明,对于同类型的中厚矿体采用这些新的采矿方法时,在提高工效,降低损失贫化,改善作业条件,扩大采场生产能力和搞好安全,以及提高经济效益等诸方面都有着极为重要的作用和意义,同时对于我们也有着深刻的教训和教益。
In this paper, the shallow hole and column method, the next section of the pre-anchor deep hole prefabricated column method and the long anchor pre-anchor short anchor joint roof protection method of deep-hole housing method and their roof control technology. Production practice has proved that the use of these new mining methods for medium-thick ore bodies of the same type is of great significance in improving work efficiency, reducing loss and dilution, improving working conditions, expanding the production capacity of stopes, improving safety and improving economic efficiency Have a very important role and significance, at the same time, we also have a profound lesson and lessons.