Investigation of the structure and dynamic response of granite weathering crust slopes based on microtremor recordings: A case study of a landslide in Lishui, Zhejiang Province
-
摘要:
花岗岩风化壳边坡在我国东南地区广泛分布，极易在降雨条件下发生群发性滑坡，因此，花岗岩风化壳边坡结构探查和动力响应研究对此类地质灾害防治具有重要的意义。文章以浙江丽水某降雨诱发的花岗岩风化壳滑坡为例，于2019年7月滑坡发生后开展现场调查，结果表明该边坡由粗粒花岗岩风化层和花岗闪长岩风化层组成；2024年11月开展边坡地脉动监测，基于地脉动HVSR法的分析表明边坡坡顶、坡腰、坡脚的卓越频率不同，基于HVSR法的边坡剪切波速反演结果表明边坡由外向内主要由花岗岩风化残积层、全-强-中风化层组成，存在2～3个可能演化为滑面的地下界面，边坡在坡向方位上具有最显著的放大效应，且随高程的增大，3～22 Hz内竖直向和4～60 Hz水平向放大效应显著增强，各台站间同频率上存在放大同步现象，这不利于动力荷载作用下边坡的稳定，但跨频率间放大不同步，这有利于动力荷载作用下边坡的稳定性。
Abstract:Granite weathering crust slopes are widely distributed in southeastern China and are highly susceptible to mass landslides during rainy events. Investigating the structure of granite weathering crust slopes and studying the dynamic responses of these slopes are crucial for preventing and mitigating such geological disasters. This paper examines a landslide in Lishui, Zhejiang Province, with field investigations conducted in July 2019 immediately following the landslide event. The results indicate that the slope consists of a coarse-grained granite weathering layer and a granodiorite weathering layer. In November 2024, subsequent microtremor monitoring was carried out on the slope. Utilizing the horizontal-to-vertical spectral ratio (HVSR) method, the anlaysis identified distinct predominant frequencies at the top, middle, and base of the slope. Shear wave velocity inversion based on the HVSR method showed that from the exterior to the interior, the slope mainly consists of granite weathered residual soil layers and fully to moderately weathered layers, with 2 to 3 potential underground interfaces that could evolve into sliding surfaces. The slope exhibits the most significant amplification effect in the direction of the slope, and as the elevation increases, the amplification effects significantly intensify within the 3 to 22 Hz vertically and 4～60 Hz horizontally, with synchronization of amplification at the same frequencies across different stations, which is detrimental to the slope stability under dynamic loading. However, the asynchronization of amplification across different frequencies is beneficial to the stability of the slope under dynamic loading.
-
-
[1] 王德滋,沈渭洲. 中国东南部花岗岩成因与地壳演化[J]. 地学前缘,2003,10(3):209 − 220. [WANG Dezi,SHEN Weizhou. Genesis of granitoids and crustal evolution in southeast China[J]. Earth Science Frontiers,2003,10(3):209 − 220. (in Chinese with English abstract)]
WANG Dezi, SHEN Weizhou. Genesis of granitoids and crustal evolution in southeast China［J］. Earth Science Frontiers, 2003, 10（3）: 209 − 220. （in Chinese with English abstract）
[2] 舒良树. 华南构造演化的基本特征[J]. 地质通报,2012,31(7):1035 − 1053. [SHU Liangshu. An analysis of principal features of tectonic evolution in south China Block[J]. Geological Bulletin of China,2012,31(7):1035 − 1053. (in Chinese with English abstract)] doi: 10.3969/j.issn.1671-2552.2012.07.003
SHU Liangshu. An analysis of principal features of tectonic evolution in south China Block［J］. Geological Bulletin of China, 2012, 31（7）: 1035 − 1053. （in Chinese with English abstract） doi: 10.3969/j.issn.1671-2552.2012.07.003
[3] GILDER S A,GILL J,COE R S,et al. Isotopic and paleomagnetic constraints on the Mesozoic tectonic evolution of south China[J]. Journal of Geophysical Research:Solid Earth,1996,101(B7):16137 − 16154. doi: 10.1029/96JB00662
[4] 陈春利,方志伟. 福建省地质灾害气象预警有效降雨模型研究[J]. 地质力学学报,2023,29(1):99 − 110. [CHEN Chunli,FANG Zhiwei. Research on an effective rainfall model for geological disaster early warning in Fujian Province,China[J]. Journal of Geomechanics,2023,29(1):99 − 110. (in Chinese with English abstract)] doi: 10.12090/j.issn.1006-6616.2022090
CHEN Chunli, FANG Zhiwei. Research on an effective rainfall model for geological disaster early warning in Fujian Province, China［J］. Journal of Geomechanics, 2023, 29（1）: 99 − 110. （in Chinese with English abstract） doi: 10.12090/j.issn.1006-6616.2022090
[5] 尚彦军,吴宏伟,曲永新. 花岗岩风化程度的化学指标及微观特征对比——以香港九龙地区为例[J]. 地质科学,2001,36(3):279 − 294. [SHANG Yanjun,WU Hongwei,QU Yongxin. Comparison of chemical indices and micro- properties of weathering degrees of granitic rocks:A case study from Kowloon,Hong Kong[J]. Scientia Geologica Sinica,2001,36(3):279 − 294. (in Chinese with English abstract)]
SHANG Yanjun, WU Hongwei, QU Yongxin. Comparison of chemical indices and micro- properties of weathering degrees of granitic rocks: A case study from Kowloon, Hong Kong［J］. Scientia Geologica Sinica, 2001, 36（3）: 279 − 294. （in Chinese with English abstract）
[6] 吴仕川. 花岗岩风化带的野外划分方法[J]. 土工基础,2013,27(6):105 − 106. [WU Shichuan. Field classification of granite weathering zone[J]. Soil Engineering and Foundation,2013,27(6):105 − 106. (in Chinese with English abstract)]
WU Shichuan. Field classification of granite weathering zone［J］. Soil Engineering and Foundation, 2013, 27（6）: 105 − 106. （in Chinese with English abstract）
[7] 吴宏伟,尚彦军,曲永新,等. 香港花岗岩风化分级化学指标体系与风化壳分带[J]. 工程地质学报,1999,7(2):125 − 134. [WU Hongwei,SHANG Yanjun,QU Yongxin,et al. Chemical weathering indices,classification,and zoning of weathered granitic rock in Hong Kong[J]. Journal of Engineering Geology,1999,7(2):125 − 134. (in Chinese with English abstract)]
WU Hongwei, SHANG Yanjun, QU Yongxin, et al. Chemical weathering indices, classification, and zoning of weathered granitic rock in Hong Kong［J］. Journal of Engineering Geology, 1999, 7（2）: 125 − 134. （in Chinese with English abstract）
[8] 王清,唐大雄,张庆云,等. 中国东部花岗岩残积土物质成分和结构特征的研究[J]. 长春地质学院学报,1991,21(1):73 − 81. [WANG Qing,TANG Daxiong,ZHANG Qingyun,et al. A study on the structure and composition of granite residual soil in the eastern China[J]. Journal of Jilin University (Earth Science Edition),1991,21(1):73 − 81. (in Chinese with English abstract)]
WANG Qing, TANG Daxiong, ZHANG Qingyun, et al. A study on the structure and composition of granite residual soil in the eastern China［J］. Journal of Jilin University （Earth Science Edition）, 1991, 21（1）: 73 − 81. （in Chinese with English abstract）
[9] 王清,蒋惠忠,唐大雄. 闽南三角地区花岗岩残积土及其工程地质特性的研究[J]. 福建地质,1990,9(2):90 − 99. [WANG Qing,JIANG Huizhong,TANG Daxiong. A study on engineering geological properties of granitic residual soil in south Fujian[J]. Geology of Fujian,1990,9(2):90 − 99. (in Chinese with English abstract)]
WANG Qing, JIANG Huizhong, TANG Daxiong. A study on engineering geological properties of granitic residual soil in south Fujian［J］. Geology of Fujian, 1990, 9（2）: 90 − 99. （in Chinese with English abstract）
[10] 简文彬,陈文庆,郑登贤. 花岗岩残积土的崩解试验研究[C]//中国土木工程学会第九届土力学及岩土工程学术会议论文集(上册). 北京,2003:312 − 315. [JIAN Wenbin, CHEN Wenqing, ZHENG Dengxian. Experimental study on disintegration of granite residual soil[C]//Proceedings of the 9th academic conference on soil mechanics and geotechnical engineering of china civil engineering society (Volume 1). Beijing, 2003: 312 − 315.(in Chinese)]
JIAN Wenbin, CHEN Wenqing, ZHENG Dengxian. Experimental study on disintegration of granite residual soil［C］//Proceedings of the 9th academic conference on soil mechanics and geotechnical engineering of china civil engineering society （Volume 1）. Beijing, 2003: 312 − 315.（in Chinese）
[11] 简文彬,胡海瑞,罗阳华,等. 干湿循环下花岗岩残积土强度衰减试验研究[J]. 工程地质学报,2017,25(3):592 − 597. [JIAN Wenbin,HU Hairui,LUO Yanghua,et al. Experimental study on deterioration of granitic residual soil strength in wetting-drying cycles[J]. Journal of Engineering Geology,2017,25(3):592 − 597. (in Chinese with English abstract)]
JIAN Wenbin, HU Hairui, LUO Yanghua, et al. Experimental study on deterioration of granitic residual soil strength in wetting-drying cycles［J］. Journal of Engineering Geology, 2017, 25（3）: 592 − 597. （in Chinese with English abstract）
[12] 吴能森. 花岗岩残积土的崩解性及软化损伤参数研究[J]. 河北建筑科技学院学报,2006,23(3):58 − 62. [WU Nengsen. A study on calving property and softening damage parameter of GRS[J]. Journal of Hebei Institute of Architectural Science and Technology,2006,23(3):58 − 62. (in Chinese with English abstract)]
WU Nengsen. A study on calving property and softening damage parameter of GRS［J］. Journal of Hebei Institute of Architectural Science and Technology, 2006, 23（3）: 58 − 62. （in Chinese with English abstract）
[13] 张抒. 广州地区花岗岩残积土崩解特性研究[D]. 武汉:中国地质大学,2009. [ZHANG Shu. Study on disintegration characteristics of granite residual soil in Guangzhou area[D]. Wuhan:China University of Geosciences,2009. (in Chinese with English abstract)]
ZHANG Shu. Study on disintegration characteristics of granite residual soil in Guangzhou area［D］. Wuhan: China University of Geosciences, 2009. （in Chinese with English abstract）
[14] 张抒,唐辉明. 非饱和花岗岩残积土崩解机制试验研究[J]. 岩土力学,2013,34(6):1668 − 1674. [ZHANG Shu,TANG Huiming. Experimental study of disintegration mechanism for unsaturated granite residual soil[J]. Rock and Soil Mechanics,2013,34(6):1668 − 1674. (in Chinese with English abstract)]
ZHANG Shu, TANG Huiming. Experimental study of disintegration mechanism for unsaturated granite residual soil［J］. Rock and Soil Mechanics, 2013, 34（6）: 1668 − 1674. （in Chinese with English abstract）
[15] 王深法,王援高,胡珍珍. 浙江山地滑坡现状及其成因[J]. 山地学报,2000,18(4):373 − 376. [WANG Shenfa,WANG Yuangao,HU Zhenzhen. Actuality of hill sliding and its cause in the mountainous region of Zhejiang Province[J]. Journal of Mountain Research,2000,18(4):373 − 376. (in Chinese with English abstract)]
WANG Shenfa, WANG Yuangao, HU Zhenzhen. Actuality of hill sliding and its cause in the mountainous region of Zhejiang Province［J］. Journal of Mountain Research, 2000, 18（4）: 373 − 376. （in Chinese with English abstract）
[16] 詹良通,李鹤,陈云敏,等. 东南沿海残积土地区降雨诱发型滑坡预报雨强-历时曲线的影响因素分析[J]. 岩土力学,2012,33(3):872 − 880. [ZHAN Liangtong,LI He,CHEN Yunmin,et al. Parametric analyses of intensity-duration curve for predicting rainfall-induced landslides in residual soil slope in southeastern coastal areas of China[J]. Rock and Soil Mechanics,2012,33(3):872 − 880. (in Chinese with English abstract)]
ZHAN Liangtong, LI He, CHEN Yunmin, et al. Parametric analyses of intensity-duration curve for predicting rainfall-induced landslides in residual soil slope in southeastern coastal areas of China［J］. Rock and Soil Mechanics, 2012, 33（3）: 872 − 880. （in Chinese with English abstract）
[17] 岳中琦. 梅大高速公路路基边坡失稳条件与滑坡机理初探[J]. 中国地质灾害与防治学报,2024,35(4):1 − 12. [YUE Zhongqi. Study on the instability condition and landslide mechanism of subgrade slope in Mei–Da Expressway[J]. The Chinese Journal of Geological Hazard and Control,2024,35(4):1 − 12. (in Chinese with English abstract)]
YUE Zhongqi. Study on the instability condition and landslide mechanism of subgrade slope in Mei–Da Expressway［J］. The Chinese Journal of Geological Hazard and Control, 2024, 35（4）: 1 − 12. （in Chinese with English abstract）
[18] 曾新雄,刘佳,赖波,等. 广东珠海市降雨型崩塌滑坡预警阈值研究[J]. 中国地质灾害与防治学报,2024,35(5):141 − 150. [ZENG Xinxiong,LIU Jia,LAI Bo,et al. Study on warning rainfall threshold for rainfall-induced collapses and landslide geological hazards in Zhuhai City,Guangdong Province[J]. The Chinese Journal of Geological Hazard and Control,2024,35(5):141 − 150. (in Chinese with English abstract)]
ZENG Xinxiong, LIU Jia, LAI Bo, et al. Study on warning rainfall threshold for rainfall-induced collapses and landslide geological hazards in Zhuhai City, Guangdong Province［J］. The Chinese Journal of Geological Hazard and Control, 2024, 35（5）: 141 − 150. （in Chinese with English abstract）
[19] 栗倩倩,王伟,黄亮,等. 台风暴雨型滑坡滞后效应分析——以浙江青田县“利奇马” 台风为例[J]. 中国地质灾害与防治学报,2022,33(6):10 − 19. [LI Qianqian,WANG Wei,HUANG Liang,et al. Analysis on lag effect of typhoon-induced landslide:A case study of typhoon “Lekima” in Qingtian County,Zhejiang Province[J]. The Chinese Journal of Geological Hazard and Control,2022,33(6):10 − 19. (in Chinese with English abstract)]
LI Qianqian, WANG Wei, HUANG Liang, et al. Analysis on lag effect of typhoon-induced landslide: A case study of typhoon “Lekima” in Qingtian County, Zhejiang Province［J］. The Chinese Journal of Geological Hazard and Control, 2022, 33（6）: 10 − 19. （in Chinese with English abstract）
[20] 周诗凯,刘正华,余丰华,等. 浙江省地质灾害气象风险预警一体化建设的探索与实践[J]. 中国地质灾害与防治学报,2024,35(2):21 − 29. [ZHOU Shikai,LIU Zhenghua,YU Fenghua,et al. Exploration and practice of integrated construction of meteorological risk warning for geological hazards in Zhejiang Province[J]. The Chinese Journal of Geological Hazard and Control,2024,35(2):21 − 29. (in Chinese with English abstract)]
ZHOU Shikai, LIU Zhenghua, YU Fenghua, et al. Exploration and practice of integrated construction of meteorological risk warning for geological hazards in Zhejiang Province［J］. The Chinese Journal of Geological Hazard and Control, 2024, 35（2）: 21 − 29. （in Chinese with English abstract）
[21] 魏平新,郑志文,周志华,等. 广东省暴雨型浅层滑坡灾害动力预警模型与气象风险预警研究[J]. 中国地质灾害与防治学报,2024,35(2):30 − 39. [WEI Pingxin,ZHENG Zhiwen,ZHOU Zhihua,et al. Research on risk early warning for rainfall-induced shallow landslides in Guangdong Province based on a dynamic slope instability model[J]. The Chinese Journal of Geological Hazard and Control,2024,35(2):30 − 39. (in Chinese with English abstract)]
WEI Pingxin, ZHENG Zhiwen, ZHOU Zhihua, et al. Research on risk early warning for rainfall-induced shallow landslides in Guangdong Province based on a dynamic slope instability model［J］. The Chinese Journal of Geological Hazard and Control, 2024, 35（2）: 30 − 39. （in Chinese with English abstract）
[22] 薛翊国,李术才,苏茂鑫,等. 厚层堆积层滑坡滑面的综合探测技术及其应用[J]. 中国地质灾害与防治学报,2013,24(3):43 − 53. [XUE Yiguo,LI Shucai,SU Maoxin,et al. Comprehensive detection technologies and their implementation on slip plane in thick colluvium landslide[J]. The Chinese Journal of Geological Hazard and Control,2013,24(3):43 − 53. (in Chinese with English abstract)]
XUE Yiguo, LI Shucai, SU Maoxin, et al. Comprehensive detection technologies and their implementation on slip plane in thick colluvium landslide［J］. The Chinese Journal of Geological Hazard and Control, 2013, 24（3）: 43 − 53. （in Chinese with English abstract）
[23] 陈松,陈长敬,吴俊,等. 物探方法在强风化区填图中的应用探索[J]. 地质力学学报,2017,23(2):206 − 213. [CHEN Song,CHEN Changjing,WU Jun,et al. Application and exploration of geophysical methods in geological mapping in strongly weathered area[J]. Journal of Geomechanics,2017,23(2):206 − 213. (in Chinese with English abstract)]
CHEN Song, CHEN Changjing, WU Jun, et al. Application and exploration of geophysical methods in geological mapping in strongly weathered area［J］. Journal of Geomechanics, 2017, 23（2）: 206 − 213. （in Chinese with English abstract）
[24] SHAPIRO N M,CAMPILLO M,STEHLY L,et al. High-resolution surface-wave tomography from ambient seismic noise[J]. Science,2005,307(5715):1615 − 1618. doi: 10.1126/science.1108339
[25] WANG Shuang,SUN Xinlei,LIU Lanbo,et al. Sub-surface structures and site effects extracted from ambient noise in metropolitan Guangzhou,China[J]. Engineering Geology,2020,268:105526. doi: 10.1016/j.enggeo.2020.105526
[26] CHEN Chunte,KUO C H,LIN Chemin,et al. Investigation of shallow S-wave velocity structure and site response parameters in Taiwan by using high-density microtremor measurements[J]. Engineering Geology,2022,297:106498. doi: 10.1016/j.enggeo.2021.106498
[27] MOON S W,SUBRAMANIAM P,ZHANG Yunhuo,et al. Bedrock depth evaluation using microtremor measurement:Empirical guidelines at weathered granite formation in Singapore[J]. Journal of Applied Geophysics,2019,171:103866. doi: 10.1016/j.jappgeo.2019.103866
[28] BODIN P,SMITH K,HORTON S,et al. Microtremor observations of deep sediment resonance in metropolitan Memphis,Tennessee[J]. Engineering Geology,2001,62(1/2/3):159 − 168.
[29] ACERRA C,HAVENITH H,ZACHAROPOULOS S. Guidelines for the implementation of the H/V spectral ratio technique on ambient vibrations measurements,processing and interpretation[J]. SESAME European Research Project EVG1-CT-2000-00026,D23.12,2004.
[30] GUO Zhen,ZHOU Mi,HUANG Yu,et al. Monitoring performance of slopes via ambient seismic noise recordings:Case study in a colluvium deposit[J]. Engineering Geology,2023,324:107268. doi: 10.1016/j.enggeo.2023.107268
[31] 刘俊辰,王文沛,高杨,等. 强震条件下西藏则隆弄沟高位滑坡失稳特征研究[J]. 中国地质灾害与防治学报,2024,35(6):15 − 23. [LIU Junchen,WANG Wenpei,GAO Yang,et al. Study on the unstable characteristics of high-level landslide in Zelongnong Gou,Xizang under severe earthquakes[J]. The Chinese Journal of Geological Hazard and Control,2024,35(6):15 − 23. (in Chinese with English abstract)]
LIU Junchen, WANG Wenpei, GAO Yang, et al. Study on the unstable characteristics of high-level landslide in Zelongnong Gou, Xizang under severe earthquakes［J］. The Chinese Journal of Geological Hazard and Control, 2024, 35（6）: 15 − 23. （in Chinese with English abstract）
[32] 王来贵,孙颖聪,赵娜,等. 地震作用下含弱层顺向坡响应规律分析[J]. 中国地质灾害与防治学报,2024,35(3):26 − 35. [WANG Laigui,SUN Yingcong,ZHAO Na,et al. Analysis on the response of the dip slope with weak layer to earthquake[J]. The Chinese Journal of Geological Hazard and Control,2024,35(3):26 − 35. (in Chinese with English abstract)]
WANG Laigui, SUN Yingcong, ZHAO Na, et al. Analysis on the response of the dip slope with weak layer to earthquake［J］. The Chinese Journal of Geological Hazard and Control, 2024, 35（3）: 26 − 35. （in Chinese with English abstract）
[33] GUO Zhen,AYDIN A,HUANG Yu,et al. Polarization characteristics of Rayleigh waves to improve seismic site effects analysis by HVSR method[J]. Engineering Geology,2021,292:106274. doi: 10.1016/j.enggeo.2021.106274
[34] GUO Zhen,XUE Mei,AYDIN A,et al. Locating the source regions of the single and double-frequency microseisms to investigate the source effects on HVSR in site effect analysis[J]. Journal of Earth Science,2022,33(5):1219 − 1232. doi: 10.1007/s12583-021-1501-4
[35] KONNO K,OHMACHI T. Ground-motion characteristics estimated from spectral ratio between horizontal and vertical components of microtremor[J]. The Bulletin of the Seismological Society of America,1998,88(1):228 − 241. doi: 10.1785/BSSA0880010228
-
下载:
图(9)
计量
- 文章访问数: 24
- PDF下载数: 4
- 施引文献: 0