摘要
从江县城地质灾害发育密度居全省首列,通过分析贵州省从江县城1:1万地质灾害详细调查资料发现,区内地质构造复杂,岜扒断层横穿工作区,岩性以变质板岩等软岩为主,岩体极为破碎,节理裂隙发育。本文旨在研究从江县城区域地质构造对地质灾害发育规律的控制作用,研究得出:(1)区内地质灾害在断层两侧具有上下盘效应,上盘地质灾害发育密度大于下盘,上盘地质灾害以土质滑坡为主,下盘以岩质滑坡为主,且在区域上具有沿断裂带呈带状分布的特点;(2)地质构造控制着区内地形地貌,为地质灾害的发育提供基础条件;(3)地质构造致使区内岩组性质变差;(4)本次研究可为类似断层沿线地质灾害多发区域防治提供依据。
By analysing the detailed survey data of 1:10000 geological hazards in Congjiang County,Guizhou Province,we found that the geological structure in the area is complex,with the Long Horn Fault crossing the work area,the lithology is mainly soft rocks such as metamorphic slate,the rock is extremely fragmented,and joints and fissures are developed.The aim of this paper is to study the role of regional geological formations in controlling the development pattern of geological hazards in Congjiang County,and the study concludes that:(1)Geological hazards in the area have an upper and lower plate effect on both sides of the fault,with the upper plate having a greater density of geological hazard development than the lower plate;the upper plate is dominated by soil-based landslides,while the lower plate is dominated by rock-based landslides,and is characterized by a band-like distribution along the fault zone in the region;(2)Geological formations control the topography of the area and provide the basis for the development of geological hazards;(3)The deterioration of the nature of the rock formations in the area as a result of geological formations;(4)This study can provide a basis for the prevention and control of geological hazards in’areas along similar faults.
作者
王昌辉
徐庆方
WANG Chang-hui;XU Qing-fang(114th Geological Brigade,Guizhou Geological and Mineral Exploration and Development Bureau,Zunyi,Guizhou 563000 china;106th Geological Brigade,Guizhou Geological and Mineral Exploration and Development Bureau,Zunyi,Guizhou 563000 china)
出处
《地下水》
2023年第2期129-131,共3页
Ground water
关键词
地质构造
地质灾害
分布规律
上下盘效应
变质岩
从江县
Geological formations
Geological Hazards
Distribution pattern
Upper and lower plate effect
Metamorphic rocks
Congjiang County
