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金属矿山 ›› 2018, Vol. 47 ›› Issue (12): 10-13.

• 采矿工程 • 上一篇    下一篇

大规模充填采矿采场稳定性研究与结构参数优化

刘建东1,解联库2,曹辉2   

  1. 1. 中国矿业大学矿业工程学院,江苏 徐州221116;2. 北京矿冶科技集团有限公司,北京102628
  • 出版日期:2018-12-15 发布日期:2019-01-17

Study on Structural Parameters Optimization and Stability of Stope for Large-scale Backfill Mining

Liu Jiandong1,Xie Lianku2,Cao Hui2   

  1. 1. School of Mines,China University of Mining and Technology,Xuzhou 221116,China;2. BGRIMM Technology Group,Beijing 102628,China
  • Online:2018-12-15 Published:2019-01-17

摘要: 甲玛铜多金属矿二期地下开采采用大直径深孔阶段空场嗣后充填采矿法,为有效控制地压灾害,实现矿体安全高效开采,采用理论计算、Mathews稳定图和FLAC3D数值模拟多种方法对采场顶板及矿柱的稳定性进行综合研究,在此基础上确定合理的采场结构参数。结果表明,12 m、15 m和18 m 的采场宽度均能满足矿柱稳定的要求;当采场宽度为18 m时,最大允许采场长度为77.3 m;当采场长度为60 m时,最大允许采场宽度为22.4 m。综合考虑采场稳定性以及深部高应力环境等因素,甲玛铜多金属矿采场宽度采用15 m较为合适,推荐的采场结构参数为15 m×60 m。

关键词: Mathews法, 数值模拟, 采场稳定性, 结构参数

Abstract: The two-stage underground mining of Jiama Copper Polymetallic Mine adopts the large diameter deep hole stage mining method with subsequent backfilling. In order to effectively control the ground pressure disaster and realize the safe and efficient mining of the ore body, the stability of the roof and pillar of the stope is synthetically studied by a variety of methods including the theoretical calculation, Mathews stability map and FLAC3D numerical simulation. On this basis, the reasonable structure parameters of the stope are determined. The results show that the width of 12 m, 15 m and 18 m can meet the requirements of pillar stability. When the width of the stope is 18 m, the maximum allowable stope length is 77.3 m. When the length of the stope is 60 m, the maximum allowable width of the stope is 22.4 m. Considering the stability of the stope and the deep high stress environment, 15 m is more suitable for the width of the Jiama Copper Polymetallic Mine, and the stope structure parameters are recommended as 15 m×60 m.

Key words: Mathews method, Numerical simulation, Stope stability, Structural parameters