【摘要】 对活动断裂的活动强度进行研究,不仅是预测地震的发生、减轻地质灾害的基础,也是城市工程设计的核心问题。本文基于断裂活动性评价所具有的模糊性和灰色性特点,将模糊数学与灰色系统有机结合,提出了断裂活动性评价的模糊综合评判模型,确定了梯形隶属函数,并采用"活动性标志的相对值大,权重大"的原则确定了各个指标的权重,最终获得了断裂活动性的评判结果。利用该模式对西安地区活动断裂的活动性进行了评价,结果表明:临潼—长安断裂活动性最强,其次是渭河断裂、咸阳断裂,余下—铁炉子断裂活动性最弱。更多还原

【Abstract】 Estimating the activity of faults is not only the basis to predict earthquake and to reduce geological disasters,but also is the core issue of urban engineering design.Based on fuzzy and grey characteristics in assessment of fault activity,a fuzzy-grey model of assessment is proposed in the frame work of fuzzy mathematical theory associated with grey system.This paper establishes the fuzzy integrate assessment model and decides a trapezoidal membership function using the fuzzy mathematics.The power of each factor is decided with the principle that the relative value of activity symbol is larger,the power is greater.This model is applied to the assessment of fault activity in Xi′an area.The result shows that the activity of Lintong-Chang′an fault is the strongest and that of Yuxia-Tieluzi fault is the weakest.更多还原