广州市地质灾害现状与防治对策

在广州市地质灾害调查与区划工作基础上,通过分析广州市地质灾害时空分布现状,进一步探讨了地质灾害成因类型与地质环境条件之间的密切关系。地质环境条件差异决定了不同地质灾害类型在空间位置上的分布特点。北部低山丘陵区地质灾害点占地质灾害总数的82%。北部花岗岩分布区,由于残坡积土层厚度较大,发生崩塌、滑坡、泥石流占该灾害总数75%。外部诱发因素决定了不同地质灾害类型在时间上发生的频率和密度。其人类经济工程活动和强降雨又是诱发地质灾害的主要因素。其中,自然因素诱发占地质灾害总数的20.5%,人为因素诱发占地质灾害总数79.5%。因此,控制人类工程不合理活动和提高人民群众对地质灾害的预防意识,是减少地质灾害发生和降低或避免地质灾害造成财产损失和人员伤亡的主要措施与对策。

Present status of the geology disaster and countermeasures on Guangzhou City

Based the investigation and the division work of the geology disaster in Guangzhou City, by analyzing present status of the timespace distribution in Guangzhou City, to further study the type of the reasons of the geology disaster and the near concern of the geology environment conditions, and the difference of the geology environment conditions determine the distribution characteristics of the different types of geology disaster in the space position ; And the exterior revulsive factors come to a decision of the frequency and the density to different geology disaster. Controlling the unreasonable activity of mankind engineering and enhancing people＇ s consciousness to prevent from geology disaster is the primary measure and countermeasure which is to decrease geology disaster occurrence and avoid the geology disaster result in property loss and personnel＇s death and injury.