基于MidasGTS/NX的鑫达煤矿露天采场边坡稳定性分析

Slope stability analysis of open-pit stope based on Midas GTS/NX in Xinda Coal Mine

为验证鑫达煤矿露天开采设计的合理性,对其开采终了边坡稳定性进行分析;通过现场勘察及室内岩石力学试验,获取相关岩石力学参数,应用MidasGTS/NX构建数值模型,对采场4个典型剖面进行数值模拟,采用强度折减法得出各剖面安全系数。结果表明:4个剖面安全系数分别为1.4125、1.3051、1.4313、1.3938,均满足规范要求,原设计方案合理,可保证煤矿生产安全。

In order to verify the soundness of the design of open-pit mining in Xinda Coal Mine,the article analyzes the stability of the slope at the end of mining,obtains the relevant rock mechanics parameters from field surveys and indoor rock mechanics tests,constructs numerical models using Midas GTS/NX,and numerically simulates four typical profiles of the stope,and obtains the safety factor for each profile using intensity reduction methods.The results show that the safety factors for each section are 1.4125,1.3051,1.4313 and 1.3938,which is in line with the code's requirements.The original design is reasonable and can ensure the production safety of Xinda Mine.