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Position: Home > Articles > Development Characteristics and Formation Mechanism of Geological Disasters in Jian'ou City,Fujian Province Bulletin of Soil and Water Conservation 2015,35 (3) 267-272+365

福建省建瓯市地质灾害发育特征及形成机制

作  者：
王姣;万军伟;左帅;周勇;童晓荣;黄琨
单  位：
中国地质大学(武汉);福建省地质工程研究院
关键词：
地质灾害;发育特征;形成机制
摘  要：
[目的]分析建瓯市地质灾害发育特征及成因,以便进一步做好建瓯市地质灾害防灾减灾工作。[方法]在区域地质灾害详细调查的基础上,分析建瓯市地质灾害的发育类型、规模、分布以及危害性等特征,总结区内地质灾害的发育规律。针对地质灾害的地形条件、地层岩性以及典型致灾土体的土工试验研究,结合对典型灾害点的讨论分析,确定建瓯市地质灾害的形成机制及土体抗剪强度特征。[结果](1)建瓯市地质灾害以小规模滑坡为主,数量众多,普遍表现为表层堆积土顺基岩面滑塌的发育特点;(2)区内地质灾害多发的原因是由于多期次构造运动导致岩体破碎,易构成不稳定结构面组合,加之表层风化土体抗剪强度较低,在人为切坡及强降雨条件诱发下,导致了斜坡的变形破坏。[结论]建瓯市地质环境条件较差,不合理的切坡易诱发滑坡。
译  名：
Development Characteristics and Formation Mechanism of Geological Disasters in Jian'ou City,Fujian Province
作  者：
WANG Jiao;WAN Junwei;ZUO Shuai;ZHOU Yong;TONG Xiaorong;HUANG Kun;China University of Geosciences(Wuhan);Geological Engineering Institute of Fujian Province;
关键词：
geological disasters;;development characteristics;;formation mechanism
摘  要：
[Objective]To analyze the development characteristics and formation mechanism of geological disasters in order to improve the prevention and control of geological disasters in Jian'ou City,Fujian Province.[Methods]Based on the detailed investigation on geological disasters,through the analysis of the geological disaster development type,scale,distribution and damage features of Jian'ou City,the development rule of geological disasters was summarized in the area.According to the formation conditions and inducing factors of geological hazards,with the analysis of typical disaster,the formation mechanism and different shear strength characteristics were identified.[Results](1)The characteristics of the disaster which developed in a large numbers of small scale landslide were summarized,and general performance of the soil collapsed along the bedrock surface;(2)The causes of geological disaster include the following points:firstly,the frequent tectonic movements resulted in a broken rock mass in the area which contained unstable structural plane combinations.Secondly,due to the low shear strength of soil on the surface of the slope,slope destruction would be easily induced under artificial cut slope and rainfall conditions.[Conclusion]The condition of geological environment in Jianou City is poor,and unreasonable cutting slope is easy to induce landslide.

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