铁矿地下开采对铁路路基稳定性的影响分析

分析了小王庄铁矿地下开采对大秦铁路线路基稳定性的影响因素，建立了适于采矿工程模拟的FLAC数值模拟模型，通过数值模拟分析，计算出铁路附近的应力变化数值，模拟结果表明，小王庄铁矿地下开采引起的大秦铁路附近的位移变化为10-4 m数量级，几乎无影响，这对矿山的建设和正常生产有重要的参考价值。

Effect of Xiaowangzhuang Underground Iron Mining on Stability of Daqin Railway Subgrade

The paper analyses the factors of Xiaowangzhuang underground iron mining that influence the stability of Daqin Railway subgrade and establishes a FLAC numerical simulation model suitable for mining project simulation. Through the numerical simulation analysis, the values of the stress change around the railway are calculated. The simulation results indicate that the displacement around Daqing railway induced by Xiaowangzhuang underground iron mining is at the order of magnitude of 10-4, almost no impact at all., which is of great reference significance to the mine construction and normal production.