[1]张跃跃,罗永红*,王运生,等.宜宾长宁MS6.0级地震诱发地质灾害应急调查[J].山地学报,2019,(6):932-942.[doi:10.16089/j.cnki.1008-2786.000483]
　ZHANG Yueyue,LUO Yonghong*,WANG Yunsheng,et al.Emergency Investigation on Geological Hazards Induced by Changning MS6.0 Earthquake, Sichuan, China[J].Mountain Research,2019,(6):932-942.[doi:10.16089/j.cnki.1008-2786.000483]
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宜宾长宁MS6.0级地震诱发地质灾害应急调查()
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《山地学报》[ISSN:1008-2186/CN:51-1516]

卷:
期数:
2019年第6期
页码:
932-942
栏目:
研究简报
出版日期:
2019-11-30

文章信息/Info

Title:
Emergency Investigation on Geological Hazards Induced by Changning MS6.0 Earthquake, Sichuan, China
文章编号:
1008-2786-(2019)6-932-11
作者:
张跃跃; 罗永红*; 王运生; 赵 波; 朱兴貌
成都理工大学 地质灾害防治与地质环境保护国家重点实验室,成都 610059
Author(s):
ZHANG Yueyue;  LUO Yonghong*;  WANG Yunsheng;  ZHAO Bo;  ZHU Xingmao
State Key Laboratory of Geohazard Prevention and Geo-environment Protection,Chengdu 610059,China
关键词:
宜宾地震;  地震地质灾害;  环境噪声;  水平与竖直谱比;  方向效应
Keywords:
Yibin earthquake;  earthquake-induced geological disaster;  environmental noise;  horizontal to vertical spectral ratio;  Direction effect
分类号:
P694~C
DOI:
10.16089/j.cnki.1008-2786.000483
摘要:
2019年6月17日四川省宜宾市长宁县发生MS6.0级地震。对震中双河镇开展野外应急调查,查明了此次地震诱发地质灾害的发育特征,并开展了环境噪声测试。调查发现,此次地震诱发地质灾害主要有崩塌、滑坡、路基破坏(沉陷或隆起)、屋基沉降、地表裂缝或塌陷、粉土液化等类型,且地质灾害主要沿北西向、北东向两条断裂地表破裂带沿线分布; 地震诱发斜坡场地动力效应产生的崩塌、滑坡规模较小且发育密度较低,断层活动导致地表同震破裂产生地表裂缝、塌陷及喷水冒泥砂等震害; 典型灾害点的水平与竖向谱比(HVSR)放大系数高于一般测试场地,且以高频放大为主(>10 Hz),与斜坡靠近活动断层带附近的高频振动产生共振效应导致破坏密切相关; 研究区测点的南北分量(NS)放大值普遍高于东西分量(EW),具有明显的方向效应,与调查区开挖公路边坡所形成的临空方向密切相关。调查结果可为震区的灾害评估、震后救援、灾区重建和灾害治理提供科学指导。
Abstract:
On June 17, 2019, a magnitude 6.0 earthquake struck Changning County, Yibin City, Sichuan Province,China, resulting in a number of co-seismic geological disasters. An emergency field investigation on the formation of geohazards and the environmental noises of the earthquake sites was carried out in Shuanghe Town, the epicenter of the Earthquake. This investigation found that the earthquake-induced geological disasters mainly included rockfalls, landslides, roadbed damages(sink or bulge), subsidence of house foundation, surface ruptures or collapses, sand liquefaction and other types. Geological disasters were mainly distributed along two surface rupture zones referred to a northwest fault and a northeast fault. Rockfalls and landslides generated on slopes due to localized seismic effects were small in scale and low in density. The surface ruptures, surface subsidence, water spraying and sand emitting followed by co-seismic ground ruptures caused by fault activity consisted of co-seismic geohazards. The magnification factors of the horizontal to vertical spectral ratio(HVSR)at typical disaster points were higher than those at general test sites, and mainly amplification at high frequency range(>10 Hz), which was closely related to the resonance effect caused by the high frequency vibration of the near active fault… The amplification values of the north-south component(NS)at survey points in the study area were generally higher than those of the east-west component(EW), which had obvious directional effect and was closely related to the direction of free face of slopes formed by highway excavation in the shock-hit area. The survey results provide scientific guidance for disaster assessment, post-quake rescue, post-quake reconstruction, and disaster management in earthquake-stricken areas.

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备注/Memo

备注/Memo:
收稿日期(Received date):2019-07-20; 改回日期(Accepted date): 2020-12-28
基金项目(Foundation item): 地质灾害防治与地质环境保护国家重点实验室开放基金研究资助(SKLGP2019K024); 国家自然科学基金(41877235); 国家创新研究群体科学基金(41521002)。[Open Research Funds of State Key Laboratory for Geohazards Prevention and Geo-environment Protection(SKLGP2019K024); National Natural Science Foundation of China(41877235); the Funds for Creative Research Groups of China(41521002)]
作者简介(Biography):张跃跃(1996-),男,山东济宁人,硕士研究生,主要研究方向:工程地质。[ZHANG Yueyue(1996-), male,born in JiNing, ShanDong province,M.Sc. candidate research on engineering geology]E-mail:411747923@qq.com
更新日期/Last Update: 2019-11-30