等值反磁通瞬变电磁法探测滑坡堆积体的应用

doi:10.11720/wtyht.2023.1152

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (5088 KB) HTML (0 KB)
Export: BibTeX | EndNote (RIS)

Abstract

The detection of landslide deposits is frequently required in the infrastructure construction of the Western China Development. However, it is difficult to distinguish the landslide deposits using conventional electromagnetic methods because of the small differences in the resistivity between the sliding surface of the sliding bed and the Quaternary overburden. Therefore, this study proposed a scheme that detected the landslide deposits using opposing-coils transient electromagnetics (OCTEM) and then traced the mountain dislocation surface reversely. Accordingly, this study established a geoelectric structure model of the landslide deposits, investigated the transient electromagnetic response patterns of landslide deposits through forward calculation, and theoretically analyzed the transient electromagnetic response patterns of landslide deposits with different thicknesses and those of landslide deposits under different thicknesses of the Quaternary overburden. As verified by the detection results of known landslides, the method proposed in this study is correct and that OCTEM is valid in detecting landslide deposits in mountainous areas.

Key words： landslide deposits opposing-coils transient electromagnetics geoelectric structure forward calculation

Received: 06 April 2022 Published: 27 April 2023

ZTFLH:

P631

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	Shu LUO
	Zheng-Yu CHEN
	Yu-Cheng LAN
	Yang-Fei LIU
	Ming-Jie DUAN

Cite this article:

Shu LUO,Zheng-Yu CHEN,Yu-Cheng LAN, et al. Application of opposing-coils transient electromagnetics in the detection of landslide deposits[J]. Geophysical and Geochemical Exploration, 2023, 47(2): 523-529.

URL:

https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2023.1152 OR https://www.wutanyuhuatan.com/EN/Y2023/V47/I2/523

Realistic view of test area and schematic diagram of survey line layout

Schematic diagram of the forward modeling model

Transient electromagnetic response of the stack with 50 m thickness
a—h₁=0 m; b—h₁=10 m; c—h₁=25 m

Transient electromagnetic response of the stacks when sliding bed thickness is 25 m
a—h₂=0 m; b—h₂=25 m; c—h₂=50 m

Multi-track profile (a) and inversion profile (b) of OCTEM field measurement data of L1 line

Multi-track profile (a) and inversion profile (b) of OCTEM field measurement data of L2 line

ZK11 Drilling results

[1]	倪凯军, 王浩, 房艳国. 大村滑坡群的成因及其古滑坡活化机制分析[J]. 工程地质学报, 2016, 24(S1):137-142.
[1]	Ni K J, Wang H, Fang Y G. Analyze on the genesis of the dacun landslides and modern reviving mechanism of its ancient landslide[J]. Journal of Engineering Geology, 2016, 24(S1):137-142.
[2]	黄勇, 孟祥连, 胡卸文, 等. 雅安—林芝交通廊道重大工程地质问题与对策研究[J]. 工程地质学报, 2021, 29(2):307-325.
[2]	Huang Y, Meng X L, Hu X W, et al. Major engineering geological problems and countermeasures along traffic corridor from Ya'an to Nyingchi[J]. Journal of Engineering Geology, 2021, 29(2):307-325.
[3]	李凡, 周明, 李开天, 等. 单斜地形情况下的磁共振测深方法反演研究[J]. 物探与化探, 2021, 45(3):712-725.
[3]	Li F, Zhou M, Li K T, et al. Inversion of magnetic resonance sounding under the condition of surface slope[J]. Geophysical and Geochemical Exploration, 2021, 45(3):712-725.
[4]	潘国林, 卢琳, 聂栋刚. 地面核磁共振方法在阳台滑坡中的应用[J]. 物探与化探, 2014,(3):616-619,623.
[4]	Pan G L, Lu L, Nie D G. The application of the surface nuclear magnetic resonance method to detecting Yangtai landslides in Anhui Province[J]. Geophysical and Geochemical Exploration, 2014,(3):616-619,623.
[5]	赵成斌, 刘保金, 姬继法, 等. 综合物探方法在地质灾害调查中的应用研究[J]. 物探与化探, 2001, 25(6):464-468.
[5]	Zhao C B, Liu B J, Ji J F, et al. The application of integrated geophysical techniques to the investigation of geological hazards[J]. Geophysical and Geochemical Exploration, 2001, 25(6):464-468.
[6]	栾明龙, 魏红, 林万顺. 瞬态瑞利波技术在工程勘察中的应用[J]. 物探与化探, 2012, 36(5):878-883.
[6]	Luan M L, Wei H, Lin W S. The application of transient raleigh wave exploration to geotechnical investigation[J]. Geophysical and Geochemical Exploration, 2012, 36(5):878-883.
[7]	盛敏汉, 储日升, 曾求, 等. 地震学方法在滑坡体结构及破裂过程的应用研究进展[J]. 地球物理学进展, 2019, 34(6):2188-2195.
[7]	Sheng M H, Chu R S, Zeng Q, et al. Application of seismological methods in landslide structure and rupture process[J]. Progress in Geophysics, 2019, 34(6):2188-2195.
[8]	周官群, 翟福勤, 郝志超, 等. 高密度电阻率法及地震反射共偏移法在九华山滑坡体探查中的应用[J]. 物探与化探, 2015, 39(4):872-876.
[8]	Zhou G Q, Zhai F Q, Hao Z C, et al. The application of the multi-electrode resistivity method and reflection seismic method to the landslide detection in the Jiuhua mountain[J]. Geophysical and Geochemical Exploration, 2015, 39(4):872-876.
[9]	李富, 周洪福, 葛华. 不同类型滑坡体的高密度电阻率法勘察电性特征[J]. 物探与化探, 2019, 43(1):215-221.
[9]	Li F, Zhou H F, Ge H. Electrical characteristics of different types of landslide bodies investigated by high-density electrical method[J]. Geophysical and Geochemical Exploration, 2019, 43(1):215-221.
[10]	程庆, 庹先国, 葛宝, 等. 高密度电阻率法在四川高川茶园沟滑坡勘察中的应用[J]. 物探与化探, 2012, 36(1):69-72.
[10]	Cheng Q, Tuo X G, Ge B, et al. The application of the high-density electrical method to the survey of chayuangou landslide in Gaochuan,Sichuan Province[J]. Geophysical and Geochemical Exploration, 2012, 36(1):69-72.
[11]	王磊, 蔡晓光, 李孝波, 等. 西吉县西南山区典型黄土地震滑坡高密度电法物探解译分析[J]. 地球物理学进展, 2020, 35(1):351-357.
[11]	Wang L, Cai X G, Li X B, et al. Interpretation analysis of high-density electrical prospecting of typical seismic loess landslides in the southwestern mountainous area of Xiji County[J]. Progress in Geophysics, 2020, 35(1):351-357.
[12]	杨成林, 陈宁生, 施蕾蕾. 探地雷达在赵子秀山滑坡裂缝探测中的应用[J]. 物探与化探, 2008, 32(2):220-224.
[12]	Yang C L, Chen N S, Shi L L. Application of ground penetrating radar in the exploration of landslide fissures in MT.Zhaozixiu[J]. Geophysical and Geochemical Exploration, 2008, 32(2):220-224.
[13]	王春辉, 查恩来, 田运涛, 等. 低频地质雷达新技术在滑坡勘查中的试验研究[J]. 地球物理学进展, 2013, 28(2):1057-1063.
[13]	Wang C H, Zha E L, Tian Y T, et al. Experiment of low-frequency GPR new technique in landslide investigation[J]. Progress in Geophysics, 2013, 28(2):1057-1063.
[14]	赵虎, 王玲辉, 程强, 等. 等值反磁通瞬变电磁成像技术及工程应用[J]. 地球物理学进展, 2021, 36(5):2244-2250.
[14]	Zhao H, Wang L H, Cheng Q, et al. Opposing coils transient electromagnetics imaging technology and engineering application[J]. Progress in Geophysics, 2021, 36(5):2244-2250.
[15]	王亮, 龙霞, 王婷婷, 等. 等值反磁通瞬变电磁法在城市浅层空洞探测中的应用[J]. 物探与化探, 2022, 46(5):1289-1295.
[15]	Wang L, Long X, Wang T T, et al. Application of the opposing-coils transient electromagnetic method in detection of urban shallow cavities[J]. Geophysical and Geochemical Exploration, 2022, 46(5):1289-1295.
[16]	周超, 赵思为, 尹小康. 等值反磁通瞬变电磁法在川藏铁路滑坡体勘探中的应用[J]. 地质灾害与环境保护, 2020, 31(3):82-87.
[16]	Zhou C, Zhao S W, Yin X K. The application of OCTEM in the landslide exploration of Sichuan-Tibet Railway[J]. Journal of Geological Hazards and Environment Preservation, 2020, 31(3):82-87.
[17]	刘杰, 段炜, 王俊, 等. 等值反磁通瞬变电磁法在公路隧道塌陷区的探测应用[J]. 物探与化探, 2020, 44(6):1470-1475.
[17]	Liu J, Duan W, Wang J, et al. The application of opposing coils transient electromagnetic method to the detection of underground collapse in highway tunnel under construction[J]. Geophysical and Geochemical Exploration, 2020, 44(6):1470-1475.
[18]	席振铢, 龙霞, 周胜. 基于等值反磁通原理的浅层瞬变电磁法[J]. 地球物理学报, 2016, 59(9):3428-3435.
[18]	Xi Z Z, Long X, Zhou S. Opposing coils transient electromagnetic method for shallow subsurface detection[J]. Chinese J.Geophys, 2016, 59(9):3428-3435.
[19]	席振铢, 宋刚, 周胜, 等. 一种瞬变电磁测量装置及方法[P]. 中国专利, 201410092714.X, 2014.
[19]	Xi Z Z, Song G, Zhou S, et al. A measure method and device of transient electromagnetic method[P]. Patent in Chinese, 201410092714.X, 2014.
[20]	Nabighian M N, Macnae J C. Time domain electromagnetic prospecting methods:Electromagnetic Methods in Applied Geophysics[M]. Society of Exploration Geophysicist, 1988:427-520.
[21]	孙怀凤, 程铭, 吴启龙, 等. 瞬变电磁三维FDTD正演多分辨网格方法[J]. 地球物理学报, 2018, 61(12):374-382.
[21]	Sun H F, Cheng M, Wu Q L, et al. A multi-scale grid scheme in three-dimensional transient electromagnetic modeling using FDTD[J]. Chinese J.Geophys, 2018, 61(12):374-382.
[22]	熊彬, 罗延钟. 电导率分块均匀的瞬变电磁2.5维有限元数值模拟[J]. 地球物理学报, 2006, 49(2):590-597.
[22]	Xiong B, Luo Y Z. Finite element modeling of 2.5D TEM with block homogeneous conductivity[J]. Chinese J.Geophys., 2006, 49(2):590-597.