贵州省纳雍县某滑坡基本特征及形成机理

Basic Characteristics and Formation Mechanism of a Landslide in Nayong County,Guizhou Province

本文以贵州省纳雍县某滑坡为研究对象,分析了滑坡的基本特征和形成机理。滑坡区位于云贵高原山区,气候湿润,年平均降雨量较高。滑坡为第四系残坡积层滑坡,滑坡面积较小,主要由粘土、碎石和块石组成。滑坡分为强变形区和弱变形区,存在明显的滑动带和地裂缝。本文还介绍了滑坡的变形监测情况,并指出滑坡的发展趋势将导致二次失稳,对周边居民和建筑物构成严重威胁。最后,根据地质条件和滑坡特征,探讨了滑坡的形成机理。对于提高地质灾害预警能力和减少灾害风险具有重要意义。

This paper focuses on a landslide in Nayong County,Guizhou Province,analyzing its basic characteristics and formation mechanism.The landslide area is located in the Yungui Plateau mountainous region,characterized by a humid climate and relatively high annual average rainfall.The landslide is classified as a Quaternary residual slope deposit landslide,with a relatively small area predominantly composed of clay,gravel,and boulders.The landslide can be divided into strong deformation zones and weak deformation zones,exhibiting distinct sliding zones and ground fissures.The paper also presents the deformation monitoring of the landslide,indicating that the development trend of the landslide may lead to secondary instability,posing a serious threat to the surrounding residents and structures.Finally,based on the geological conditions and landslide characteristics,the formation mechanism of the landslide is discussed.This research holds significant importance in enhancing geological disaster early warning capabilities and reducing disaster risks.