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金属矿山 ›› 2007, Vol. 37 ›› Issue (12): 27-31.

• 采矿工程 • 上一篇    下一篇

沉积型铝土矿分层分级开采关键技术参数研究

张吉龙1,3,姜立春2   

  1. 1.中南大学;2.华南理工大学;3.中国铝业公司
  • 出版日期:2007-12-15 发布日期:2012-02-07

Key Technical Parameters in by-Layer by-Grade Mining of Sedimentary Bauxite

Zhang Jilong1,3,Jiang Lichun2   

  1. 1.Central South University;2.South China University of Technology;3.Aluminum Corporation of China Limited
  • Online:2007-12-15 Published:2012-02-07

摘要: 分层分级开采技术是解决山西境内铝土矿合理开采的一种有效技术。定义了分层分级开采技术内涵,并确定了其开采的适用范围。在大量现场试验的基础上确定了孝义铝矿分层分级开采的合理技术参数:①不需爆破作业时,采矿条带宽度为5 m,有效松碎深度为0.5~0.8 m,松碎间距为1.0~1.5 m,采矿台阶高度为3.5~4.5 m,最小工作平台宽度为26~28 m,工作线长度一般为60~80 m。②爆破作业时,给出了爆破条带宽度与矿体倾角(6° ~18°)的关系曲线和作业线长度与矿体厚度的关系曲线。工作线长度随倾角的增加而增加,随厚度的增加而减小。

关键词: 露天矿, 沉积型铝土矿, 分层分级开采, 工作面参数

Abstract: The technology of by-layer by-grade mining is an effective way to achieve rational exploitation of bauxite in Shanxi Province. The technical connotation of this method is defined and its applicable scope determined. Based on a great deal of field tests, the rational technical parameters of by-layer and by-grade mining for Xiaoyi Aluminum Mine are set: 1) When there is no need of blasting operation, the width of mining strip is 5 m; valid depth of looseness 0.5~0.8 m; space between looseness 1.0~1.5 m; step height of mining 3.5~4.5 m; minimum width of work platform 26~28 m; and the front length generally 60~80 m. 2) In case of a need for blasting, the curve of the relationship between the width of blasting strip and the orebody dip angle (6°~18°) is given as well as the curve of the relationship between the front length and the orebody thickness. The front length will increase with the increase of dip angle, and decreases with the increase of thickness.

Key words: Opencast, Sedimentary bauxite, By-layer by-grade Mining, Working face parameters