摘要
"三江"地区是地质灾害强发区,又是资源富集区和环境重点保护区。为了实现对区内地质灾害危险性的定量或定量评价,根据该区"崩、滑、流"地质灾害的发育机制-地形地貌的改造和演化过程中各种外动力地质作用的动力机制,将促进地质灾害发育的各类影响因子总和-动力势与减缓地质灾害发育的各类影响因子总和-抗力势之间的差值作为地质灾害发育动力强度指数,并且用于量化评价地质灾害危险性程度。通过41个典型地质灾害点的调查分析对各类影响因子赋值,采用多元线性回归方法求解出的地质灾害发育强度指数与影响因子之间的线性方程,作为地质灾害危险性量化评价模型。采用该线性模型简要计算了"三江"并流区典型区段的地质灾害发育强度指数,并通指数的大小为依据统一划分地质灾害危险性程度,避免了人为分级和分区的随意性。
There are mainly various kinds of collapse,landslide and mud-rock flow in Three Parallel Rivers area,and developmental mechanism of the hazards are dynamic mechanism affected by complicated geological processes under various external forces during topographical reforming and evolution process in the area. All kinds of factors which promote the development of geological hazards compose motive potential energy and mitigating development of geological hazards compose resistance potential energy,then the differ...
出处
《环境科学与技术》
CAS
CSCD
北大核心
2010年第9期192-196,共5页
Environmental Science & Technology
基金
云南省技术创新人才培养依托项目
关键词
地质灾害
动力机制
强度指数
危险性程度
量化评价
geological hazards
dynamic mechanism
intensity index
danger level
quantitative evaluation
