摘要
从我矿资源和矿柱回采实际情况出发,总结了近十几年来用留矿法回采底柱的实践经验。针对现用上向平行中深孔法回采底柱的弊端和今后矿柱回采所面临的新问题,以西501—4号采场底柱为例,探讨用扇形深孔法回采覆岩下矿石底柱的技术方案。经济效果对比分析表明,实施这一方案有利于安全回采,可提高矿石回收率和经济效益。
Practical experiences with shrinkage mining method for pillar extraction over the pust ten years were summarized. As some problems remain unsloved with sill extraction process using upward parallel blastholes and some new problems are expected in future pillar extraction, in mining thewest No.1-4 stope sill a technical alternative in which fan deepholes were used for sill extraction under overlaying rock was applied. Analysis andcomparasion of economical effects indicated that the alternative technology could improve safety and increase recovery rate, thus resulting in more economical gains
出处
《矿业研究与开发》
CAS
北大核心
1993年第3期33-38,共6页
Mining Research and Development
关键词
矿柱回采
扇形中深孔法
留矿法
Pillar extraction, Fan deep hole, Shrinkage mining method
