欢迎访问《现代矿业》杂志官方网站,今天是 分享到:

现代矿业 ›› 2014, Vol. 30 ›› Issue (08): 99-101.

• 安全·环保 • 上一篇    下一篇

基于RFPA2D的巷道支护技术研究

公佩暖1,2,赵华1,2   

  1. 1.中色地科矿产勘查股份有限公司;2.哈密红石矿业有限公司
  • 出版日期:2014-08-15 发布日期:2016-09-08

Research on Roadway Supporting Technology Based on RFPA2D

Gong Peinuan1,2,Zhao Hua1,2   

  1. 1.Sinotech Minerals Exploration Co.,Ltd.;2.Hami Red Sea Mineral Co.,Ltd.
  • Online:2014-08-15 Published:2016-09-08

摘要: 通过分析红海矿区上部中段巷道的破坏情况,得知裂隙、断层和进路中动、静应力场复杂变化是引起各中段巷道顶板冒落的重要因素。对此,借助RFPA2D软件对红海矿区+180 m中段开拓巷道进行数值模拟,得到了巷道在静应力场作用下可能出现的破坏形态,即巷道帮顶交线处出现应力集中,巷道中部最先发生破坏,随后裂隙向深部延伸,车场顶板最终与上部稳定岩层发生分离并塌落;沿脉顶板出现较多的裂隙,在动应力场作用下存在安全隐患。根据数值模拟结果,通过在井底车场使用锚喷支护,脉外沿脉使用单一锚杆、隔排全长锚固支护,保证了开拓巷道的稳定性。

关键词: RFPA2D, 巷道支护, 顶板破坏形态

Abstract: According to the analysis results of the destruction situation of the upper middle roadway of Red Sea mining area, fractures,faults and the complex changes of approach of dynamic and static stress field are the important factors of the middle of roadway roof caving. So, the 180 m middle development roadway is numerical simulated by adopting the RFPA2D software,the roadway destruction mode that is maybe appeared under the conditions of static stress field. To be specific,the stress is concentrated on intersection lines of roadway roof, firstly, the middle of roadway is destructed, then, the fractures extend to the deep, shaft station roof is separated from the upper stable rock formations eventually, then it is caved. Fractures are appeared in the ore drift roof, so, the ore drift roof is unsafe under the dynamic stress field. According to the numerical simulation results, the anchor-plate retaining method is used to deal with shaft station, the single anchor length, every other row of anchorage support method is adopted to deal with ore drift outside dyke, therefore, the stability of development roadway is guaranteed.

Key words: RFPA2D, Roadway support, Destruction mode of roof