摘要
2019年7月9日,受强降雨影响,牡丹江市青梅山东坡发生一中型牵引式山体滑坡,总体积约30.43×104 m3,滑动距离约为20 m,滑坡前缘已延伸至鹤大高速公路边沟,鹤大高速公路长约400 m的路段受到威胁,潜在经济损失巨大。利用遥感、物探、无人机航测等手段研究青梅东山滑坡形态特征及形成机理,结果表明:青梅东山滑坡为牵引式中层滑坡体,呈塔式扇形外貌,由于地层岩性特征加之人工修路、开挖坡脚等诸多原因,致使坡体稳定性失衡,从而发生滑坡。
On July 9,2019,a medium-sized traction landslide occurred at the East slope of Qingmei mountain,Mudanjiang city affected by heavy rainfall,with a total volume of about 30.43×104 m3 and a sliding distance of about 20 meters.The landslide reached the side ditch of Heda expressway threatening an area of with a length of about 400 m of Heda expressway and resulting in huge potential economic losses.The landslide form and formation mechanism of this landslide are studied by means of remote sensing,geophysical prospecting and UAV aerial survey.It is concluded that this landslide is a traction middle-layer landslide with a tower-shaped fan shape.Due to the formation lithology characteristics and many original reasons such as road construction and excavation at the foot of the slope,the slope stability is disturbed,and thus landslide occurs.
作者
王忠禹
佟智强
杨洪祥
宋林旭
王建伟
宋立东
WANG Zhongyu;TONG Zhiqiang;YANG Hongxiang;SONG Linxu;WANG Jianwei;SONG Lidong(Mudanjiang Natural Resources Survey Center,China Geological Survey,Mudanjiang 157021,Heilongjiang,China)
出处
《城市地质》
2021年第3期287-293,共7页
Urban Geology
基金
中国地质调查局牡丹江市多要素城市地质调查(DD20191021)资助。
关键词
滑坡成因
猴石沟组砂岩
灾害演化趋势
牵引式滑坡
landslide genesis
Houshigou formation sandstone
disaster evolution trend
traction landslide
