广梧高速公路(马安—河口段)地震地质稳定性评价

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英文篇名：Evaluation of Seismogeological background stability of Guangwu Express Highway (Maan-Hekou) 中文刊名：华南地震 英文刊名：South China Journal of Seismology 作者：魏柏林 ; 卢帮华 ; 邱奕超 英文作者：WEI Bai-lin ; LU Bang-hua ; QIU Yi-chao(Seismological Bureau of Guangdong Province ; Guangzhou 510070 ; China) 中文关键词：活动断裂 ; 地震活动 ; 东南地洼区 ; 地震地质环境 英文关键词：Southeast DIWA area ; Active fault ; Seismic activity ; Seismogeological background 出版日期：2003-09-30 机构：广东省地震局,广东省地震局,广东省地震局 广东　广州　510070 ,广东　广州　510070 ,广东　广州　510070 年：2003 期：03 出版单位：华南地震

摘要

由于工程需要,对广梧高速公路(马安—河口段)的地震地质情况进行了考察,马安—河口路段所处大地构造性质为东南地洼区,穿越了三个次级构造分区:白土断陷、思劳断隆、云浮断隆。路段附近发育3条断裂:肇庆断裂、河口断裂和吴川-四会断裂。前两者为非活动断裂,后者为活动断裂且呈北东向从思劳附近穿过,是未来5 0/4～5 0级级地震发生地段,烈度可达Ⅵ度。但路段附近地震活动水平较低,仅发生过43地震4次,最大烈度为Ⅴ度。白诸立交、河口立交的地震地质环境稳定,思劳立交基本稳定,沿线不易产生滑坡与崩塌。
Because of the demand of project, we have surveyed the seismogeology of Guangwu express highway (Maan-Hekou). The section of the highway lies in southeast DIWA of geotectonics. It passes through three sub-structure areas: Baitu down-faulted, Silao fault-block mountains and Yunfu fault-block mountains. There are: Zhaoqing fault, Hekou fault and Wuchuan-Sihui fault in the area. The former two are inactive faults, the latter is active fault and passes through about Silao at northeastward, where MS50 will occur. Its intensity will reach VI. The seismic activity about the section of highway is lower, where only four times MS4 3/4～50 occurred, and the biggest intensity reaches V. The seismogeological environment of the cloverleaf junction of Baizhu and Hekou is stable, but Silao is basically stable. Landslides and collapses don't occur easily. 

引文

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