摘要
为保障破碎矿体采场稳定,减少矿石损失和贫化,实现安全高效开采,以某铁矿破碎采场为背景,利用FLAC3D分析不同宽度采场的稳定性,确定合理的采场结构参数。通过计算和分析不同宽度的矿房在开采过程中顶板和侧帮的应力、位移和塑性破坏区变化特征,得出不同结构参数采场的稳定情况。结果表明,当采场宽度超过14 m时,顶板的应力和位移都较大,采场的稳定性变差;随着采场宽度的增大,侧帮的应力和位移变化范围逐渐减小,有利于采场的稳定;当采场宽度大于12 m时,两帮容易发生剪切滑移破坏,采场的稳定性变差。因此,建议采场宽度选择为10~12 m。工程实践表明,优化选择的采场结构参数合理。
In order to ensure the stope stability of crushing ore body,reduce ore loss and dilution,as well as realize safe and efficient mining,taking the crushing stope of an iron mine as the background,FLAC3D was used to analyze the stopes stability with different widths and determine reasonable stope structure parameters.By calculating and analyzing the variation characteristics of stress,displacement and plastic failure zone of roof and side wall under different stope widths during mining,the stope stability with different structural parameters was obtained.The results show that when the stope width exceeds 14 m,the stress and displacement of roof are large,and the stope stability becomes worse.With the increase of stope width,the range of stress and displacement of side wall decreases gradually,which is beneficial to the stope stability.When the stope width is greater than 12 m,the two sides are prone to shear slip failure,and the stope stability becomes worse.Therefore,it is suggested that the stope width should be 10-12 m.Engineering practice shows that the optimized stope structure parameters are reasonable and reliable.
作者
路燕泽
甘德清
王立杰
王社光
张雅洁
王福全
LU Yanze;GAN Deqing;WANG Lijie;WANG Sheguang;ZHANG Yajie;WANG Fuquan(College of Mining Engineering,North China University of Technology,Tangshan,Hebei 063210,China;Hebei Mining Development and Safety Engineering Laboratory,North China University of Technology,Tangshan,Hebei 063210,China;Shahe Zhongguan Iron Mine Co.,Ltd.,Hebei Iron and Steel Group,Xingtai,Hebei o541oo,China)
出处
《矿业研究与开发》
CAS
北大核心
2023年第5期7-12,共6页
Mining Research and Development
关键词
采场结构参数
数值模拟
FLAC3D软件
优化分析
Stope structure parameters
Numerical simulation
FLAC3D software
Optimization analysis
