四川省内江市东兴区地质灾害发育特征及控制因素分析  

The developing features and controlling factors of geological hazards in Dongxing District of Neijiang City,Sichuan Province

作　　者：樊建利[1] 李天斌[1] 

机构地区：[1]成都理工大学环境与土木工程学院,四川成都610059

出　　处：《中国地质灾害与防治学报》2007年第4期24-28,共5页The Chinese Journal of Geological Hazard and Control

摘　　要：东兴区地质灾害数量众多,分布广泛,危害严重,以小型崩塌（危岩）为主。主要分布在区域东北部、西北部窄谷深丘地貌区及中南部人口相对密集地区。即地质灾害中易发区;其发生时间多集中在每年7~9月。地质灾害发育分布受多种因素控制及影响。即地形地貌控制着地质灾害的规模及空间分布;软硬相间的岩性组合易产生差异性风化,引起斜坡失稳;近水平的地质构造可产生大量的斜坡失稳;斜坡结构形式控制着崩塌（危岩）发生的可能性;降雨使岩体受到冲刷及软化并且在岩体内部产生水压力,促进斜坡失稳;人类工程活动导致斜坡原始状态破坏,诱发斜坡失稳。根据地质灾害的发育分布特征及控制和影响因素,建议采取治理与避险搬迁、加强监测以及保护斜坡地质环境等措施减少地质灾害的发生。The geological hazards are mostly miniature rock avalanches in Dongxing District,with excessive amount and widely distributing and having severity endangering.In area,the geological hazards distribute mostly in northeast and northwest where the landforms are narrow valley and deep hillock and also distribute in center-south where population are concentrated.In these areas,geological hazards are middling developing.In time,the geological hazards mainly occur in July-September.The developing and distributing of geological hazards are controlled and affected by many factors.For controlling factors： landform controls the scale and distributing of the geological hazards;setting of soft and hard pathologies will effloresce that being discrepancy,then slopes will not stabilize;geological structure that pathologies are nearly smooth will make many slopes;construction of slope controls the potentiality of collapse of rock;For affected factor： rainfall would erode rock and make rock soft and in the same time rainfall can produce water press,It accelerates failure of slope;human engineering activity breaks early condition of slopes and induce failure of slope.According to the developing and distributing features of the geological hazards and the controlling and affecting factors,some measures will be adopted to cut down geological hazards,such as curing and moving,reinforce survey and conserving environments as construction of slope etc.

关 键 词：地质灾害 崩塌(危岩) 因素 四川省内江市东兴区 

分 类 号：P642.2[天文地球—工程地质学]