摘要
本文采用ABAQUS软件,通过数值模拟分析了帷幕注浆过程中注浆方式和注浆压力对露天矿坑边坡稳定性的影响。分析表明:单孔和多孔分段注浆时,坡面水平位移随着注浆段埋深的加大而减小,且最大水平位移位置逐渐下移;多孔分段注浆对坡顶沿线水平位移影响差异不大;不同注浆压力下多孔分段注浆时,坡面和坡顶沿线水平位移均随着注浆压力的增加而增大,且最大水平位移位置分别出现在坡顶部分和坡顶沿线中间位置。监测结果表明,此数值分析方法可较好地反映注浆过程中边坡的变形规律。
In this paper,ABAQUS software is used to analyze the influence of grouting method and grouting pressure on the stability of open pit slope during curtain grouting by numerical simulation.The analysis shows that:when single-hole and multi-hole subsection grouting is used,the horizontal displacement of slope surface decreases with the increase of the depth of grouting section,and the maximum horizontal displacement position decreases with the increase of grouting section buried depth;the difference between the influence of multi-hole grouting on horizontal displacement along the top of slope is not significant;under different grouting pressures,the horizontal displacement along the slope surface and the top increases with the increase of grouting pressure,and the maximum horizontal displacement locates in the top section of the slope and the middle of the top slope respectively.The monitoring results show that the numerical analysis method can well reflect the deformation law of slope during grouting.
作者
贾伟杰
JIA Weijie(North China Nonferrous Engineering Investigation Institute Co.,Ltd.,Shijiazhuang 050021,China;Technological Innovation Center for Mine Groundwater Safety of Hebei Province,Shijiazhuang 050021,China)
出处
《中国矿业》
北大核心
2019年第A02期391-396,共6页
China Mining Magazine
基金
国家自然科学基金项目资助(编号：51374203)
