欢迎访问《现代矿业》杂志官方网站,今天是 分享到:

现代矿业 ›› 2020, Vol. 36 ›› Issue (4): 165-170.

• 安全·职业健康 • 上一篇    下一篇

龙首矿六角形进路腰宽尺寸对充填体稳定性影响的分析

王虎   

  1. 金川集团股份有限公司
  • 出版日期:2020-04-25 发布日期:2020-05-20

Analysis of the Influence of Waist Width of Hexagonal Access on the Stability of Filling Body in Longshou Mine

Wang Hu   

  1. Jinchuan Group Co.,Ltd.
  • Online:2020-04-25 Published:2020-05-20

摘要: 为保证生产安全的前提下提高采矿效率、降低采矿成本,结合龙首矿实际情况,采用ANSYS有限元三维模拟软件,构建龙首矿六角形进路三维模型,从最大主应力、最小主应力以及最大位移三方面入手,研究4 m×4 m×5 m矩形进路以及4 m×5 m×5 m、4 m×6 m×5 m、4 m×7 m×5 m六角形进路共4种进路腰宽尺寸对充填体α进路的稳定性影响。结果表明,进路腰宽尺寸对于不同形状进路的最大主应力、最小主应力和整体位移影响比较显著,特别是矩形进路,相比其他3种六角形进路,其最大主应力、最小主应力以及最大位移在最大值与最小值上分别达到了3倍、14倍以及30倍;而进路腰宽对于相同形状的进路规格影响较小,在研究的3个方面上最大值分别为最小值的1.40倍、3.48倍和22.75倍。总体而言,随着进路腰宽的增长,腰宽4 m的矩形进路会大幅度影响充填体的稳定性,而腰宽5~7 m的六角形进路对于充填体的稳定性影响较小,在实际生产中,对充填体α进路仅仅需要部分的支护和管理,就可以达到良好的生产效果。本次研究为先进采矿方法探究、进路充填体的稳定性研究提供了依据。

关键词: 六角形进路, 矩形进路, 进路腰宽, 三维模型, 充填体, 稳定性分析

Abstract: In order to promote mining efficiency and reduce mining cost under the premise of ensuring safety of production,based on the actual situation of Longshou Mine,by using ANSYS finite element 3D simulation software,the 3D model of hexagon access in Longshou Mine is established.The influence of waist width of the four hexagonal accesses with the parameters of 4 m×4 m×5 m(rectangular access),4 m×5 m×5 m,4 m×6 m×5 m,4 m×7 m×5 m on the stability of α access of backfilling body is studied.The results show that the waist width has a significant effect on the maximum principal stress,minimum principal stress and overall displacement of different shapes of accesses,especially for the rectangular access,compared with the other 3 sets of hexagonal accesses,the maximum principal stress,minimum principal stress and maximum displacement are 3 times,14 times and 30 times different from the maximum and minimum values.However,the waist width of the access has little influence on the access specifications of the same shape,and the difference between the maximum and minimum values in the three aspects of the study is 1.40 times,3.48 times and 22.75 times.In general,with the increasing of waist with of the access,the rectangular access with 4 m waist width will greatly affects the stability of the backfilling body.The hexagon access with 5~7 m waist width has little influence on the stability of backfilling body.In the actual production,only partial support and management are needed for α access of backfilling body,the good production effects would be achieved.The above study results provide a basis for the further discussion of the mining methods and the stability of backfilling body access.

Key words: Hexagonal access, Rectangular access, Waist width of access, Three-dimensional model, Backfilling body, Stability analysis