Welcome to Metal Mine! Today is Share:
×

扫码分享

Metal Mine ›› 2020, Vol. 49 ›› Issue (06): 156-160.

Previous Articles     Next Articles

Research on Deep Ground Pressure Control Technology and Stope Optimization Support

Zhang Ruiming1 Wei Dingyi2 Du Cuifeng2 Xu Haiyue2 Chang Baomeng2 Wang Yuan2   

  1. 1. Shanxi Engineering Vocational College,Taiyuan 030009,China;2. School of Civil and Resources Engineering,University of Science and Technology Beijing,Beijing 100083,China
  • Online:2020-06-15 Published:2020-06-23

Abstract:  In order to control the deep ground pressure reasonably and effectively,a certain mine is selected as the research object,and the existing main support methods are investigated on site to establish a classification support model and a roadway classification support design. The results show that U-shaped steel arch frames,sprayed concrete,anchor nets and bolts are the main support methods at present. The required bolt per unit area of the mining area with average or better stability is 0.67 pieces/m2,and the bolt mesh size could be adjusted to 1.5~2.0 m×1.5~2.0 m. If the surrounding rock is too broken,the bolt mesh should be constructed strictly according to the design. According to the engineering quality of the roadway ore and rock,and then combined with the roadway use time,exposed area and influence degree,the support level index value RQ is obtained. According to the RQ value,the roadway support is divided into 5 levels,and the support form and parameters of each stope are finally determined. This will provide a scientific basis for safe and efficient mining in the deep mining.

Key words: Ground pressure control, Bolt support, Influencing factors, Classification support, Support parameters