梅州市典型地质灾害分布特征及危害性分析

摘要

Meizhou City is located in the southeast of China where geological hazards such as landslide, collapse occurred frequently. According to the yearbook of disaster prevention and mitigation in Guangdong Province, it shows that the most typical hazards are landslide, collapse, surface collapse which occurred during 1998 to 2008 in Meizhou. The geological hazards have such obvious characteristics as spatial and temporal distribution,which concen-trated in the counties of Wuhua, Dabu and Xingning in space and June and 2007 in time. Meanwhile the hazards are characterized as small scale, frequent activities, simultaneous occurrence, serious harms,and the geological hazards which was induced by human-beings is rather serious.%　　梅州市位于东南地质灾害多发区，滑坡和崩塌等地质灾害频发。根据《广东省防灾减灾年鉴》的资料，对梅州市1998~2008年间地质灾害统计分析发现，梅州市发育最典型的地质灾害是滑坡、崩塌、地面塌陷3种。地质灾害具有明显的空间分布和时间分布特征，空间上集中在五华、大埔、兴宁三地，时间上年内分布集中在6月份，而年际分布集中在2007年。同时地质灾害具有规模小、频率高、群发性、危害严重等特点。此外，人为因素诱发的地质灾害相当严重。