贵州石阡县汤山滑坡体特征与变形破坏机制研究
The deformation and failure mechanism of Tangshan landslide in Shiqian County,Guizhou Province
张洪明 1李正忠 1杨俊2
作者信息
- 1. 贵州省地质矿产勘查开发局114 地质大队,贵州 遵义 563000;贵州省地矿局第二工程勘察院有限公司,贵州 遵义 563000
- 2. 贵州省地矿局第二工程勘察院有限公司,贵州 遵义 563000
- 折叠
摘要
研究区位于扬子准地台之黔北台隆遵义断拱凤冈北北东向构造变形区,区域构造发育,有利于滑坡灾害的形成.文章在总结汤山滑坡体特征的基础上,分析破坏变形机制,研究认为:研究区为一老滑坡堆积体滑坡,属于顺向坡滑坡体,易受大气降水影响而发生蠕变现象,潜在危险性极大,可能造成石阡河堵塞;滑面位置为岩土的接触面,该泥化层处于饱水状态时呈软塑状,有利于滑坡体的滑动.大气降水垂直入渗补给及斜坡顶部基岩裂隙水、碳酸盐岩溶蚀裂隙水顺层补给是滑坡体滑动的主要诱因;降雨和人类工程活动是该滑坡体再次滑动破坏的主要原因.
Abstract
The study area is located in the north-north-east-trending tectonic deformation zone of Fenggang in the north of Qianbei Tailong,Zunyi in the Yangtze quasi-platform,and the regional tectonic development is conducive to the formation of landslide disasters.On the basis of summarizing the characteristics of the Tangshan landslide,this paper analyzed the failure and deformation mechanism,and concluded that the study area is an old landslide accumulation landslide,belonging to the forward slope landslide,which is susceptible to creep phenomenon under the influence of atmospheric precipitation.The area has great potential danger,which may cause the blockage of Shiqian River.The position of the sliding surface is the contact surface of rock and soil,and the mud layer is soft plastic when it is in a saturated state,which is conducive to the sliding of the landslide body.The vertical seepage recharge of atmospheric precipitation and the bedrock fissure water at the top of the slope and the water recharge of carbonate dissolution fissures are the main causes of landslide sliding.Rainfall and human engineering activities are the main reasons for the re-sliding failure of the landslide.
关键词
汤山滑坡体/滑坡面/滑床破坏机制Key words
Tangshan landslide body/landslide surface/failure mechanism of the landslide引用本文复制引用
出版年
2024
NETL
NSTL
万方数据