摘要
通过分析研究区内崩塌形成的地形地貌、气象水文及地质构造等条件,提出针对性防治对策及建议,为地质灾害早期识别和防治管理提供依据。研究表明,两处火山岩分布区崩塌主控条件为地质构造,次要条件为岩体结构和风化程度。庐枞盆地火山岩主控节理走向以北西-北北西向为主,崩塌岩体多呈碎裂结构及散体结构;北淮阳火山岩主控节理走向以北东-北北东向为主,崩塌岩体多呈块状结构及碎裂结构。崩塌地质灾害主要发生在居民切坡建房及道路切坡形成的人工边坡,一般威胁对象主要为居民点或道路过往行人及车辆,因其点多面广,建议采取源头控制、重点治理及群防群策等措施进行防治。
Based on analysis of terrains formed by collapses,as well as meteorology,hydrology and geological struc‐tures in the study area,countermeasures and suggestions for prevention and control of the collapses are put forward,thus providing a basis for early identification,control of the geological hazards.The study shows that the collapses are mainly controlled by geological structures in two volcanic rock areas,and secondarily by rock mass structure and weathering degree.The dominant joints in volcanic rocks in the Lu-Zong Basin mainly strike NW-NNW,and the col‐lapsed rock masses are mostly cataclastic and granular in texture.Volcanic rocks in Beihuaiyang are mainly con‐trolled by NE-NNE-trending joints,and the collapsed rocks are mostly massive and cataclastic.Geological hazard of collapse usually occurs where slope cuttings have been made for house buildings by local residents,posing a danger to residential community,or to pedestrians and vehicles on roads.It is recommended to take measures such as govern‐ing from source,treatment at key point,and other precautions considering the widespread sites of small collapses.
作者
陈皓龙
谢杰
王恒凯
王延明
宋武元
李三
CHEN Haoong;XIE Jie;WANG Hengkai;WANG Yanming;SONG Wuyuan;LI SAN(No.327 Unit,Bureau of Geology and Mineral Exploration of Anhui Province,Hefei,Anhui 230011,China)
出处
《安徽地质》
2023年第4期369-374,共6页
Geology of Anhui
基金
中央财政补助资金项目“安徽省合肥市庐江县1∶50 000地质灾害风险调查评价”(编号:2021-z-3-14)资助。
关键词
火山岩
崩塌特征
防治对策
volcanic rocks
features of collapses
prevention and control measures
