基于D-InSAR技术的唐山万达广场地区沉降监测及其安全性评价  

Subsidence Monitoring and Security Evaluation in Wanda Square of Tang Shan Based on D-InSAR Technique

作　　者：黄宝伟[1,2] 宋小刚[1] 王振杰[2] 单新建[1] 

机构地区：[1]中国地震局地质研究所,地震动力学国家重点实验室,北京100029 [2]中国石油大学华东,青岛266555

出　　处：《遥感信息》2012年第4期101-105,共5页Remote Sensing Information

基　　金：中央级公益性科研院所基本科研业务专项(NO:IGCEA1010);国家科技支撑(2008BAC38B03);国家自然科学基金(40874006、40974004)联合资助

摘　　要：唐山市万达广场南边为煤矿区,由于开采引起的地面沉降,直接影响到城市建筑物的安全,因此,采用D-InSAR形变监测手段获取煤矿区及周边地区的沉降时空分布特征显得尤为重要。收集了2004年～2008年唐山市万达广场及周边地区的3景ENVISAT ASAR数据,使用合成孔径雷达差分干涉测量(D-InSAR)技术来研究地面沉降对万达广场建设及周边地区的影响,获得了两期地面沉降结果,并将结果结合GIS技术对广场的建设进行安全性分析。实验结果表明:唐山煤矿地下开采引起的地面沉降从2004年开始没有再向万达广场的方向扩展,所以不会影响万达广场的建设,从而保证了广场的顺利建设和周边地区安全、有序的发展,也进一步验证了D-InSAR技术在煤矿区地面沉降监测中应用的可行性。At the south of Wanda Square in Tangshan city,there is a coal field,and the security of urban construction is impacted directly because of land subsidence caused by mining.As a result,it is very important to obtain the temporal and spatial distribution features of settlement in the coal fields and surrounding areas with the D-InSAR technology.In this paper,three frames ENVISAT ASAR data covering Wanda Square and its surrounding area of Tang Shan spanning from 2004 to 2008 are processed by use of D-InSAR technique,to study the influence of land subsidence.Two period results of land subsidence are acquired,and analyzed by combing with GIS technique to make a security evaluation of construction of the Square.The results show that land subsidence caused by underground mining of Tang Shan coal mine is no longer extended to the direction of Wanda Square from 2004,so it will not influence the construction of Wanda Square,and security and future development of its surrounding area.This case also verified the feasibility to monitor the land subsidence in the mining area by applying D-InSAR technique.

关 键 词：D-INSAR 万达广场 地面沉降 煤矿区 安全性评价 

分 类 号：TP79[自动化与计算机技术—检测技术与自动化装置]