稳定性定量化评价与分区  

QUANTITATIVE ASSESSMENT AND ZONATION OF REGIONAL STABILITY IN TANGSHAN

作　　者：王占乐[1] 陈稳[1] 

机构地区：[1]河北理工大学资源与环境学院,河北唐山063009

出　　处：《资源与产业》2007年第2期117-121,共5页Resources & Industries

摘　　要：唐山地区区域构造复杂,工程地质问题众多,地震频繁,总体看来唐山地区区域地壳稳定性相对较差。为了使区域地壳稳定性评价与分区获得定量化认识,本文以构造稳定性评价为主兼顾其他因素的原则,对影响唐山地区区域地壳稳定性的6项主要因子进行了系统研究,并应用模糊数学方法对其进行综合定量化评价与分区。评价结果表明:唐山地区总面积13472 km2,其中市区面积为3874 km2。相对不稳定区占16.6%,相对较不稳定区占37.9%,两者之和占54.5%;相对较稳定区占27.3%,相对稳定区占18.2%,二者之和占45.5%。因此,从总体上说,唐山地区地壳相对不稳定区所占比例较相对稳定区多,说明唐山地区区域地壳稳定性情况较差。Tangshan area, complicated in regional structures which result in frequent engineering problems and earthquakes, is relatively unstable in its regional crust. This paper, aiming at attain a quantitative assessment and taking the structural stability as the core, systematically studies six major factors relevant to the regional crustal stability in Tangshan area via the fuzzy mathematics. The results indicate the total area in Tangshan area is 13 472 km^2, of which the urban area is 3 874 km^2. Among the urban area, the relatively unstable area is 16. 6% , less unstable area is 37.9%, both 54.5% ; while the relatively stable area is 27.3% , and stable area is 18. 2%, both 45.5%. In general, Tangshan area is unstable in its regional crust.

关 键 词：唐山地区 地壳稳定性 活动断裂 定量化评价 模糊数学 

分 类 号：P548[天文地球—构造地质学]