摘要
2020年2月20日晚20点20分,贵阳市乌当区在册的百宜镇拐九村秧寨大坡组发生滑坡地质灾害。通过资料收集、现场调查、室内试验、综合评判等多种方法对滑坡灾害诱导形成机制及应急防治对策展开研究。研究表明:斜坡岩土由厚层状灰岩偶夹薄片状含泥质蠕状灰岩构成的岩石顺向坡,层间存在泥化薄膜,当前缘开挖后形成陡坎临空面,在大气降雨沿地表裂隙和溶槽渗透坡体内长期作用下,坡脚岩体崩滑后牵引后部岩土体沿岩层面形成滑移-拉裂式顺层滑坡;应急防治对策采用“上清下压、侧面锁捆”的综合措施,能够快速有效消除地质灾害隐患。研究结果可为同类型的滑坡研究及防治对策提供理论和技术借鉴。
On the evening of February 20,2020,at 20∶20,a significant landslide occurred at Yangzhai Dapo Group in Guaijiu Village,Baiyi Town,Wudang District,Guiyang City.This study employed data collection,on-site investigation,internal trials,and comprehensive analysis to explore the formation mechanism of the landslide,and to develop emergency prevention strategies.Our findings reveal that the rock soil of the slope comprises a thick,layer-shaped,tattoo-like slice with embedded mud creep rocks,separated by a mud film between layers.The long-term impact of rainfall,surface crack infiltration,and meson penetration into the grooves leads to the entrapment of the rock body,following the formation of a rocky layer.The strategy of“clearing from above,pressing from below,and locking and bundling from the sides”has been proved to be a rapid and effective method to eliminate the risks of geological disasters.The outcomes of this research offer a theoretical and technical framework for addressing similar landslides and formulating prevention and control measures.
作者
吴正超
夏江黔
潘世佳
廖德武
郑冰
WU Zhengchao;XIA Jiangqian;PAN Shijia;LIAO Dewu;ZHENG Bing(Guizhou Geology and Mining Foundation Engineering Co.Ltd.,Guiyang 550081,China;Guizhou Geological Survey Institute,Guiyang 550081,China)
出处
《贵州科学》
2024年第5期92-96,共5页
Guizhou Science
基金
基于多源异构数据的贵州三叠系含软弱来层顺层岩质边坡能量演化特征及监测预警模型研究(黔科合支撑〔2023〕一般127)。
关键词
突发性滑坡
地质灾害
形成机制
应急防治
对策
sudden landslides
geological disasters
formation mechanism
emergency prevention and control
countermeasures
