基于PSInSAR的平南锡基坑铅锌矿采空区沉降监测与分析  

Monitoring and Analysis of Subsidence in Goaf of Xijikeng Lead-zinc Mine in Pingnan Based on PSInSAR Technique

作　　者：孟凡超[1] 吉长东[2] MENG Fanchao;JI Changdong(School of Resources&Environment and Safety Engineering,Liaoyuan Vocational Technical College,Liaoyuan 136201,China;School of Geomatics,Liaoning Technical University,Fuxin 123000,China)

机构地区：[1]辽源职业技术学院资源环境与安全工程学院,吉林辽源136201 [2]辽宁工程技术大学测绘与地理科学学院,辽宁阜新123000

出　　处：《金属矿山》2023年第12期177-181,共5页Metal Mine

基　　金：辽宁省教育厅项目(编号:LJ2020JCL006);自然资源部国土卫星遥感应用重点实验室项目(编号:LSMNR-202107);辽宁工程技术大学创新团队项目(编号:LNTU20TD-27)。

摘　　要：矿体开采引起的地表沉降是矿山主要地质灾害之一。为掌握采空区上方地表沉降规律,通过PSInSAR技术对平南锡基坑铅锌矿采空区地表沉降数据进行提取,对比MSPS软件沉降预测结果,并对采集数据进行了分析,研究了该矿地表沉降规律。结果表明:①PSInSAR技术对采空区沉降采集结果与MSPS软件的计算结果一致,证明了PSInSAR技术的合理性;②随着开采的进行,地表沉陷呈现一定的周期性,且随着开采的逐渐稳定,周期间隔逐渐增大;③地表盆地监测结果表明,地表下沉呈现先快后慢的趋势,矿石开采后地表沉速度逐渐增大,随着应力场的调整,地表下沉逐渐变慢。Surface subsidence caused by orebody mining is one of the main geological hazards in mines.In order to grasp the law of surface subsidence above the mined-out area,the PSInSAR technique was used to extract the surface subsidence data of the mined-out area of the Xijikeng Lead-zinc Mine in Pingnan.The subsidence prediction results of the MSPS software were compared,and the collected data were analyzed,the ground subsidence law of the mine is studied.The results show that:①The acquisition results of goaf subsidence by PSInSAR technology are consistent with the calculation results of MSPS software,which proves the rationality of PSInSAR technology;②With the progress of mining,the surface subsidence presents a certain periodicity,and with the gradual stability of mining,the periodicity interval gradually increases;③The surface basin monitoring results show that the surface subsidence presents a trend of first fast and then slow,and the surface subsidence rate gradually increases after ore mining,and gradually slows down with the adjustment of stress field.

关 键 词：开采沉陷 PSINSAR 铅锌矿 采空区 影像反演 

分 类 号：TD325[矿业工程—矿井建设] P237[天文地球—摄影测量与遥感]