汶川8.0级地震彭州现场调查及灾害成因分析

2008年5月12日14时28分发生的汶川8．0级大地震对我国四川省西部及西北部县市造成了特别严重,甚至是毁灭性破坏。本文是对地震灾区,主要是极重灾区彭州龙门山镇的现场调查情况的总结,包括灾区的地表破裂、崩塌滑坡地质灾害及建筑物破坏等情况。在此基础上,结合其他的分析成果,对此次地震灾害的主要成因进行了分析。分析表明,本次地震灾害的主要成因包括：震级大、震源浅、断层破裂区域广、影响范围大：地表地质灾害严重,大面积的崩塌、滑坡、泥石流造成了大量的人员伤亡;农村建筑物缺乏必要的抗震设防,乡镇建筑物抗震性能存在差异。

Site Survey and Disaster Analysis of Pengzhou City in Wenchuan 8.0 Earthquake

A devastated earthquake of magnitude 8.0 striked Wenchuan county, Sichuan province on May 18th, 2008, which affected many counties in the west of Sichuan pronvince. This paper is based on the on-site work at Pengzhou city, especially in the Longmenshan community which was heaveylly damaged, and some other typical destroied area, including the situation of building destroy, secondery disaster such as landslide, mud flood and ground rupture. The cuases of such huge hazard is analyzed. Our results show that huge enegy of the earthquake, various kinds of geological hazards, weakness of building＇s seismic resistence ability are main reasons that caused such huge fatilities.