基于车载重力测量平台的城市地下空洞快速探测
|
摘要
为了解决现有静态重力测量在城市地下空洞探测时存在工作难度大、效率低等问题,本文提出了基于车载重力测量平台的城市地下空洞快速探测方法。采用国产高精度捷联式重力仪SAG搭建车载移动重力测量平台,在长春卫星广场附近进行动态重力测量试验。首先对测得数据进行楼房干扰校正;之后采用基于传统极值点深度估计(depth from extreme points,DEXP)方法改进的比值DEXP方法进行重力异常数据深度成像;最后采用Tilt梯度法对位场数据进行边界识别。选取轻轨站附近两条测线进行研究,得出测线在700～1 300m区域附近存在负值异常,在800和1 000m附近最佳深度分别是24和28m,构造指数分别为0.18和0.06;经分析符合实际地下轻轨站空洞类型和所在范围,验证了车载移动平台重力测量在城市地下空洞探测中展开的可能性和有效性。
Gravity and its related measurement technology are widely used in underground cavity detection.The widely used static gravity survey has many problems such as difficulty in work and low efficiency when used for urban gravity detection.Although the dynamic gravity measurement based on mobile platform is widely applied in the field of sea and space,it is seldom used in underground cavity detection.In view of the shortages of the static gravity measurement method,a rapid detection method of urban underground cavity based on vehicle borne gravity measurement platform is proposed.In this study,a vehicle mobile gravity measurement platform was built by using domestic high precision strapdown gravimeter SAG,which was tested near Changchun Satellite Square.First of all,the measurement data were corrected to void the building interference;and then,the gravity anomaly data were measured with ratio DEXP(depth from extrme points);and finally,the tilt gradient method was used to identify the site boundary.The location of underground light rail station was determined,by which the feasibility and effectiveness of vehicle mounted platform gravity measurement in urban underground cavity detection are verified.
Gravity and its related measurement technology are widely used in underground cavity detection.The widely used static gravity survey has many problems such as difficulty in work and low efficiency when used for urban gravity detection.Although the dynamic gravity measurement based on mobile platform is widely applied in the field of sea and space,it is seldom used in underground cavity detection.In view of the shortages of the static gravity measurement method,a rapid detection method of urban underground cavity based on vehicle borne gravity measurement platform is proposed.In this study,a vehicle mobile gravity measurement platform was built by using domestic high precision strapdown gravimeter SAG,which was tested near Changchun Satellite Square.First of all,the measurement data were corrected to void the building interference;and then,the gravity anomaly data were measured with ratio DEXP(depth from extrme points);and finally,the tilt gradient method was used to identify the site boundary.The location of underground light rail station was determined,by which the feasibility and effectiveness of vehicle mounted platform gravity measurement in urban underground cavity detection are verified.
引文
[1]刘得磊.浅析地球物理探测技术及其应用[J].世界有色金属,2017(16):50-51.Liu Delei.Analysis of Geophysical Exploration Technology and Its Applications[J].World Nonferrous Metals,2017(16):50-51.
[2]Geng M,Yang Q,Huang D.3D Joint Inversion of Gravity-Gradient and Borehole Gravity Data[J].Exploration Geophysics,2015,48(2):151-165.
[3]Romaides A J,Battis J C,Sands R W,et al.AComparison of Gravimetric Techniques for Measuring Subsurface Void Signals[J].Journal of Physics D:Applied Physics,2001,34(3):433-443.
[4]王庆宾,江东,赵东明,等.重力垂直梯度测量探测能力的正演[J].测绘科学技术学报,2011,28(3):161-164.Wang Qingbin,Jiang Dong,Zhao Dongming,et al.Forward Modeling of Gravity Vertical Gradient Surveying Ability[J].Journal of Surveying and Mapping Technology,2011,28(3):161-164.
[5]胡强,伍吉仓,郑二龙,等.利用微重力测量探测城市地下孔洞[J].工程勘察,2015,43(11):74-78.Hu Qiang,Wu Jicang,Zheng Erlong,et al.Detection of Urban Underground Holes Using Microgravity Measurements[J].Engineering Prospecting,2015,43(11):74-78.
[6]高维,舒晴,屈进红,等.国外航空物探测量系统近年来若干进展[J].物探与化探,2016,40(6):1116-1124.Gao Wei,Shu Qing,Qu Jinhong,et al.Recent Advances in Foreignaircraft Detection Systems[J].Geophysical and Geochemical Exploration,2016,40(6):1116-1124.
[7]高新兵.航空重力数据处理及其应用研究[D].郑州:解放军信息工程大学,2013.Gao Xinbing.Aeronautical Gravity Data Processing and Its Application[D].Zhengzhou:PLA Information Engineering University,2013.
[8]王静波,熊盛青,周锡华,等.航空重力测量系统研究进展[J].物探与化探,2009,33(4):368-373.Wang Jingbo,Xiong Shengqing,Zhou Xihua,et al.Research Progress in Aviation Gravity Measurement System[J].Geophysical and Geochemical Exploration,2009,33(4):368-373.
[9]Abbas M A,Fedi M.Automatic DEXP Imaging of Potential Fields Independent of the Structural Index[J].Geophysical Journal International,2013,199(3):1625-1632.
[10]陈玲娜,曾昭发,袁园,等.利用比值DEXP进行重力梯度数据深度成像[J].世界地质,2015,34(4):1113-1119.Chen Lingna,Zeng Zhaofa,Yuan Yuan,et al.Depth Imaging of Gravity Gradient Data Using Ratio DEXP[J].World Geology,2015,34(4):1113-1119.
[11]吴亮,刘长弘,王庆宾,等.重力异常对地下异常体边界的识别算法[J].测绘科学,2015,40(12):34-37.Wu Liang,Liu Changhong,Wang Qingbin,et al.Recognition Algorithm of Gravity Anomaly for Underground Anomalous Body Boundary[J].Surveying and Mapping Science,2015,40(12):34-37.
[12]王想,李桐林.Tilt梯度及其水平导数提取重磁源边界位置[J].地球物理学进展,2004,19(3):625-630.Wang Xiang,Li Tonglin.Tilt Gradient and Its Horizontal Derivative to Extract the Boundary Location of Gravity and Magnetic Sources[J].Geophysics Progress,2004,19(3):625-630.
[13]肖锋,吴燕冈,孟令顺.重力异常图中的边界增强和提取技术[J].吉林大学学报(地球科学版),2011,41(4):1197-1203.Xiao Feng,Wu Yangang,Meng Lingshun.Boundary Enhancement and Extraction Techniques in Gravitational Anomaly Maps[J].Journal of Jilin University(Earth Science Edition),2011,41(4):1197-1203.
[14]骆遥.两种新的长方体重力场正演表达式及其理论推导[J].工程地球物理学报,2008,5(2):210-214.Luo Yao.Two New Forward Expressions for Rectangular Body Force Fields and Their Theoretical Derivation[J].Chinese Journal of Engineering Geophysics,2008,5(2):210-214.
[15]冯治汉.区域重力调查中的中区地形改正方法及精度[J].物探与化探,2007,31(5):455-458.Feng Zhihan.Method and Accuracy for Correcting Topographical Features of Central Region in Regional Gravity Survey[J].Geophysical and Geochemical Exploration,2007,31(5):455-458.
[16]Fedi M.DEXP:A Fast Method to Determine the Depth and the Structural Index of Potential Fields Sources[J].Geophysics,2007,72(1):I1-I11.
[17]Hornby P,Boschetti F,Horowitz F G.Analysis of Potential Field Data in the Wavelet Domain[J].Geophysical Journal of the Royal Astronomical Society,2010,137(1):175-196.
[18]Mauriello P,Patella D.Gravity Probability Tomography:A New Tool for Buried Mass Distribution Imaging[J].Geophysical Prospecting,2001,49(1):1-12.
[19]Cribb J.Application of the Generalized Linear Inverse to the Inversion of Static Potential Data[J].Geophysics,1976,41(6):1365.
[20]孟令志.大断面平顶直墙车站密贴下穿既有线风险控制技术研究[D].北京:北京交通大学,2017.Meng Lingzhi.Research on the Risk Control Technology of Large-Section Flat-Topped Straight Wall Station Under the Cable[D].Beijing:Beijing Jiaotong University,2017.
[21]范美宁.欧拉反褶积方法的研究及应用[D].长春:吉林大学,2006.Fan Meining.Research and Application of Euler Deconvolution Method[D].Changchun:Jilin University,2006.
[22]Ma Guoqing,Ming Yanbo,Han Jiangtao,et al.Fast Local Wavenumber(FLW)Method for the Inversion of Magnetic Source Parameters[J].Applied Geophysics(English Edition),2018,15(2):353-360.
[2]Geng M,Yang Q,Huang D.3D Joint Inversion of Gravity-Gradient and Borehole Gravity Data[J].Exploration Geophysics,2015,48(2):151-165.
[3]Romaides A J,Battis J C,Sands R W,et al.AComparison of Gravimetric Techniques for Measuring Subsurface Void Signals[J].Journal of Physics D:Applied Physics,2001,34(3):433-443.
[4]王庆宾,江东,赵东明,等.重力垂直梯度测量探测能力的正演[J].测绘科学技术学报,2011,28(3):161-164.Wang Qingbin,Jiang Dong,Zhao Dongming,et al.Forward Modeling of Gravity Vertical Gradient Surveying Ability[J].Journal of Surveying and Mapping Technology,2011,28(3):161-164.
[5]胡强,伍吉仓,郑二龙,等.利用微重力测量探测城市地下孔洞[J].工程勘察,2015,43(11):74-78.Hu Qiang,Wu Jicang,Zheng Erlong,et al.Detection of Urban Underground Holes Using Microgravity Measurements[J].Engineering Prospecting,2015,43(11):74-78.
[6]高维,舒晴,屈进红,等.国外航空物探测量系统近年来若干进展[J].物探与化探,2016,40(6):1116-1124.Gao Wei,Shu Qing,Qu Jinhong,et al.Recent Advances in Foreignaircraft Detection Systems[J].Geophysical and Geochemical Exploration,2016,40(6):1116-1124.
[7]高新兵.航空重力数据处理及其应用研究[D].郑州:解放军信息工程大学,2013.Gao Xinbing.Aeronautical Gravity Data Processing and Its Application[D].Zhengzhou:PLA Information Engineering University,2013.
[8]王静波,熊盛青,周锡华,等.航空重力测量系统研究进展[J].物探与化探,2009,33(4):368-373.Wang Jingbo,Xiong Shengqing,Zhou Xihua,et al.Research Progress in Aviation Gravity Measurement System[J].Geophysical and Geochemical Exploration,2009,33(4):368-373.
[9]Abbas M A,Fedi M.Automatic DEXP Imaging of Potential Fields Independent of the Structural Index[J].Geophysical Journal International,2013,199(3):1625-1632.
[10]陈玲娜,曾昭发,袁园,等.利用比值DEXP进行重力梯度数据深度成像[J].世界地质,2015,34(4):1113-1119.Chen Lingna,Zeng Zhaofa,Yuan Yuan,et al.Depth Imaging of Gravity Gradient Data Using Ratio DEXP[J].World Geology,2015,34(4):1113-1119.
[11]吴亮,刘长弘,王庆宾,等.重力异常对地下异常体边界的识别算法[J].测绘科学,2015,40(12):34-37.Wu Liang,Liu Changhong,Wang Qingbin,et al.Recognition Algorithm of Gravity Anomaly for Underground Anomalous Body Boundary[J].Surveying and Mapping Science,2015,40(12):34-37.
[12]王想,李桐林.Tilt梯度及其水平导数提取重磁源边界位置[J].地球物理学进展,2004,19(3):625-630.Wang Xiang,Li Tonglin.Tilt Gradient and Its Horizontal Derivative to Extract the Boundary Location of Gravity and Magnetic Sources[J].Geophysics Progress,2004,19(3):625-630.
[13]肖锋,吴燕冈,孟令顺.重力异常图中的边界增强和提取技术[J].吉林大学学报(地球科学版),2011,41(4):1197-1203.Xiao Feng,Wu Yangang,Meng Lingshun.Boundary Enhancement and Extraction Techniques in Gravitational Anomaly Maps[J].Journal of Jilin University(Earth Science Edition),2011,41(4):1197-1203.
[14]骆遥.两种新的长方体重力场正演表达式及其理论推导[J].工程地球物理学报,2008,5(2):210-214.Luo Yao.Two New Forward Expressions for Rectangular Body Force Fields and Their Theoretical Derivation[J].Chinese Journal of Engineering Geophysics,2008,5(2):210-214.
[15]冯治汉.区域重力调查中的中区地形改正方法及精度[J].物探与化探,2007,31(5):455-458.Feng Zhihan.Method and Accuracy for Correcting Topographical Features of Central Region in Regional Gravity Survey[J].Geophysical and Geochemical Exploration,2007,31(5):455-458.
[16]Fedi M.DEXP:A Fast Method to Determine the Depth and the Structural Index of Potential Fields Sources[J].Geophysics,2007,72(1):I1-I11.
[17]Hornby P,Boschetti F,Horowitz F G.Analysis of Potential Field Data in the Wavelet Domain[J].Geophysical Journal of the Royal Astronomical Society,2010,137(1):175-196.
[18]Mauriello P,Patella D.Gravity Probability Tomography:A New Tool for Buried Mass Distribution Imaging[J].Geophysical Prospecting,2001,49(1):1-12.
[19]Cribb J.Application of the Generalized Linear Inverse to the Inversion of Static Potential Data[J].Geophysics,1976,41(6):1365.
[20]孟令志.大断面平顶直墙车站密贴下穿既有线风险控制技术研究[D].北京:北京交通大学,2017.Meng Lingzhi.Research on the Risk Control Technology of Large-Section Flat-Topped Straight Wall Station Under the Cable[D].Beijing:Beijing Jiaotong University,2017.
[21]范美宁.欧拉反褶积方法的研究及应用[D].长春:吉林大学,2006.Fan Meining.Research and Application of Euler Deconvolution Method[D].Changchun:Jilin University,2006.
[22]Ma Guoqing,Ming Yanbo,Han Jiangtao,et al.Fast Local Wavenumber(FLW)Method for the Inversion of Magnetic Source Parameters[J].Applied Geophysics(English Edition),2018,15(2):353-360.