某金矿采空区对铁路的稳定性影响分析

Analysis of the Influence of Goaf of a Gold Mine on Railway Stability

以某金矿采空区为例,采用资料收集与地质调查、物探测试、InSAR沉降监测分析等综合勘察手段,查明了金矿采空区分布情况。InSAR技术在采空区沉降监测中具有监测范围广、监测精度高、可持续监测等诸多优点,在采空区沉降监测应用过程中需根据矿山开采时间选取有代表性的靶向年度范围开展监测工作,且需注意采空区形成与地面沉降变形发生的滞后性。通过力学计算方法分析了采空区的稳定状态和采空区影响范围,为铁路选线定线提供了依据。

Taking a goaf of gold mine as an example,the distribution of gold mine goaf was ascertained by means of data collection and geological survey,geophysical exploration and InSAR settlement monitoring and analysis.InSAR technology has many advantages in goaf settlement monitoring,such as wide monitoring range,high monitoring accuracyand sustainable monitoring.In the application of goaf settlement monitoring,it is necessary to select representative target annual range according to mining time.At the same time,attention should be paid to the hysteresis between goaf formation and ground settlement deformation.The stability state and influence range of goaf are analyzed by mechanical calculation method,which provides a basis for railwayline selection and alignment.