地下铝土矿高低品位分层开采方法研究  

Study on the Method of High and Low Grade Layered Mining of Underground Bauxite

作　　者：章立强 王振乾[1,2] ZHANG Liqiang;WANG Zhenqian(Shanghai Co.,Ltd of China Coal Technology&Engineering Group,Shanghai 200030,China;Shanghai Branch of Tiandi Science Technology Co.,Ltd,Shanghai 200030,China)

机构地区：[1]中国煤炭科工集团上海有限公司,上海200030 [2]天地科技股份有限公司上海分公司,上海200030

出　　处：《矿业研究与开发》2021年第6期11-16,共6页Mining Research and Development

基　　金：天地科技股份有限公司科技创新创业资金专项重点项目(2020-TD-ZD016)。

摘　　要：针对所形成的下限薄、厚度变化大的高品位矿料的开采问题,结合铝土矿的物理特性与开采要求,分析了地下铝土矿中高品位矿与中低品位矿呈现近分层分布特点。基于现有煤矿综合机械化开采技术,提出了适应该条件铝土矿开采的新型铝土采矿机的问题解决方案,提出了铝土分层开采工艺并列述了详细的工艺步骤。提出了"留距抬摇臂斜切进刀方式"、"底刀留浮料开采方法"两大核心工艺,详细阐述了与现有煤矿综采工艺的区别;列述了"高低品位双层矿料开采方法"、"高低品位三层矿料开采方法"的特点。为了保证分层开采的顺利实施,提出了分采分运分储系统、两巷与待采面的配套性、高低品位矿料分层快速判定方法、高品位矿料装载方式、中低品位矿料装载方式等多个关键点;综述了地下铝土综采项目进展与现状、分层开采工艺所取得的阶段成果;总结了地下铝土高低品位分层开采方法的特点及适用面。In view of the mining problem of high-grade ore with thin lower limit and large thickness variation, combined with the physical characteristics and mining requirements of bauxite, the characteristics of nearly layered distribution of high-grade and low-grade ores were analyzed in underground bauxite. Based on the existing comprehensive mechanized mining technology of coal mine, a solution to the problem of a new bauxite mining machine adapted to the condition of bauxite mining was put forward, the technology of bauxite layered mining was proposed and the detailed process steps was described. Two key cores were put forward, namely, the method of oblique cutting and feeding with distance lifting rocker arm and the mining method of retaining floating material with bottom knife. And the difference between the new technology and the existing coal mining technology was described in detail. The characteristics of mining method of high and low grade double-layer ore and mining method of three-layer high-grade ore were listed. In order to ensure the smooth implementation of layered mining, several key points were put forward, such as separate mining, separate transportation and storage system, matching between two roadways and mining face, rapid determination method of high-grade ore material layering, loading mode of high-grade ore material, loading mode of medium and low-grade mineral material, etc. The progress and status of underground bauxite comprehensive mining project and the stage achievements of layered mining technology were summarized. Finally, the characteristics and applicable areas of the high and low grade layered mining method of underground bauxite were summarized.

关 键 词：地下铝土矿 高低品位 矿料 采矿机 分层 开采工艺 

分 类 号：TD862.5[矿业工程—金属矿开采]