摘要
长江中游岸坡崩塌是制约沿岸工程建设的主要环境地质问题。本文以长江中游重点开发岸段簰洲湾-武穴为研究对象,分析影响岸坡稳定的主要因素,通过对场地工程地质条件、地质灾害易发程度、岸线冲淤程度、河道形态特征等指标的综合分析,运用层次分析法,对簰洲湾-武穴段岸坡的稳定性进行评价。结果表明工作区岸坡以土质岸坡为主,左岸稳定、较稳定和不稳定岸坡长度大致相当,右岸绝大部分为稳定岸线。岸坡稳定的区域场地工程地质条件良好,地势平坦、开阔,河道顺直,地质灾害不发育,不稳定的区段河道弯曲、岸线冲淤严重。
Bank slope collapse is the main environmental geological problem for coastal engineering construction in the middle of the Yangtze River. Focused on the important shore from Paizhouwan to Wuxue, the main affected factors on stability of bank slope were analyzed, and the stability was evaluated by analytic hierarchy process based on the comprehensive analysis of the geological conditions, the susceptibility of geological disaster, erosion and accretion of the shoreline, the characteristics of river channel configuration. The results show that the slope is mainly soil bank slope in study area. The length of stable, comparatively stable and unstable coastline is roughly equal on the left. Most of the bank slope on the right is stable. The engineering geological condition is favorable in the stable coastline where territory is flat and open, river is straight, geological disasters are not developed. The river channel is winding in unstable coastline with serious erosion and accretion.
出处
《华南地质与矿产》
CAS
2017年第2期187-192,共6页
Geology and Mineral Resources of South China
基金
中国地质调查局项目“长江中游宜昌-荆州和武汉-黄石沿岸段1︰5万环境地质调查(121201009000150014)”
关键词
长江中游
簰洲湾-武穴
岸坡稳定性评价
Middle of the Yangtze River
Paizhouwan-Wuxue area
coastline stability evaluation
