南水北调与水利科技2012，Vol.10Issue(1)：125-128,4.DOI:10.3724/SP.J.1201.2012.01125
广元市地震波能量分布特征及地质灾害响应
Research on Distribution of Seismic Wave Energy and Response of Geologic Hazards in Guangyuan
付荣 1傅荣华 1常鸣 1蔡明1
作者信息
- 1. 成都理工大学环境与土木工程学院,成都610059
- 折叠
摘要
Abstract
According to the strong ground motion records from the Wenchuan earthquake at the Zengjia station in Guangyuan and the field data of the earthquake-induced collapse and landslide, the distribution of seismic wave energy was investigated in this study. The results suggested that the period of the largest accumulation of seismic wave energy is 60~80 s and the main frequency is about 2. 7 Hz. Following this, this paper analyzed the spatial characteristics of the response of the earthquake-induced geologic hazards in the study area from the aspects of geomorphology,lithology,geological structure, and performance of earthquake wave. The geologic hazards occurred mainly at the mountain area with an elevation of 800--1800 m;at the area with a gradient of 30°~50°;at the metamorphic rock stratum with intense weathering and fracture development, and the stratum with an interbedding of soft and hard rock;and at the area of the extension direction and intersection of the fault structure, and the area with a higher predominant frequency than the main frequency of the ground motion. In the study area, the Donghekou landslide occurred in a period with the most cumulative of seismic energy. Moreover, the results indicated that the spatial and temporal characteristics of the response of the geologic hazards are consistent with those of the seismic energy.关键词
汶川地震/地震波/能量分布/地质灾害/响应特征/广元市Key words
Wenchuan earthquake/seismic wave/energy distribution/geologic hazards/response characteristics/Guangyuan City分类
天文与地球科学引用本文复制引用
付荣,傅荣华,常鸣,蔡明..广元市地震波能量分布特征及地质灾害响应[J].南水北调与水利科技,2012,10(1):125-128,4.
