地震次生山地灾害及其防治对策——以“汶川大地震”次生山地灾害为例  

Earthquake-Induced Mountain Hazards and Its Countermeasures——Case Study on Earthquake-induced Mountain Hazards of Wenchuan Earthquake

作　　者：陈兴长[1,2] 陈慧[1] 

机构地区：[1]西南科技大学环境与资源学院,四川绵阳621010 [2]中国科学院成都山地灾害与环境研究所,四川成都610041

出　　处：《西南科技大学学报》2009年第1期42-47,55,共7页Journal of Southwest University of Science and Technology

基　　金：973计划项目(2008CB425803);国家自然科学资金项目(40841011)共同资助

摘　　要：对地震次生山地灾害进行了界定。它是指在山区由地震直接引发的或者由于地震作用的影响而引发的灾害性地貌过程。"汶川大地震"引发了大量的次生山地灾害,主要灾害类型以崩塌和滑坡为主,具有灾害类型齐全、破坏严重,带状分布、成片发育,堰塞湖险情严重,潜在地质灾害发育等特点。地震次生山地灾害具有一定的时效效应,可划分为同震次生山地灾害、短期次生山地灾害和长期次生山地灾害。分析认为,"汶川大地震"重大次生山地灾害发生的成因是地球内外动力地质耦合作用的结果。针对不同时期的次生山地灾害,提出了防治对策。The definition of earthquake-induced mountain hazards was defined, which were disastrous courses of geomorphology directly caused by earthquake or formed due to the effects of earthquake in mountain areas or hill regions. Wenchuan earthquake, caused devastating damage to people＇ s lives and property in the earthquake-hit areas, had caused the most serious mountain hazards since 1949 and the main types of these hazards were landslides and rockfalls. The disasters had characteristics of full range and serious, zonal distribution, serious landslide lakes and development of potential geohazards. By analyzing the characteristics of these disasters, it was found that earthquake-induced mountain disasters have time-dependent effect and could be divided into real-time earthquake-induced geohazards, short-term earthquake-induced geohazards and long-term earthquake- induced geohazards. Different countermeasures dogenic coupling ards. and exogenic geological coupling process. An in-depth study of endogenic mechanism is of great significance to reveal mechanism of the causes of and exogenic geological serious geological hazards.

关 键 词：汶川大地震 次生山地灾害 灾害时效效应 地球内外动力耦合作用 

分 类 号：P315.9[天文地球—地震学] P642.2[天文地球—固体地球物理学]