滑坡前兆突变异常识别方法-岩土力学.PDF

DO I :10.16285/j .rsm.2000.01.011 21 1 　　　　　　 　　　　Vol.2 1 No.1 2000 3 Rock and Soil Mechanics 　　　　Mar.2000 :1000-7598-(2000)0 1-0036-04 ＊ 秦四清 (, 　100029) :, , 、 ;; 。 　　:, , , , :　　　:A :, , 35 , , , 。 Identification approach to abrupt abnormality of landslide forerunners Qin S iqing (Institute o Geology, Chinese Academy o Sciences, Beijing 100029) Abstract 　The time series o displacement measured in-situ o landslide is regarded as the unstable random process in the paper.The short-term ab- normalities are extracted by means o the homomorphic model and the identi ication criterion o abnormalities and computing ormula o order degree are given.The critical-sliding abnormalities are extracted w ith one degree di erence equation or high pass ilter.The prediction is conducted w ith the grey catastrophe model through the abrupt date set composed o abnormality times. Key Words　short-term abnormality, critical-sliding abnormality, identi ication criterion o abnormality, probability, grey catastrophe ), , 1 　　　 , 。 , 1 , [1] 。 、、。 2.1　 、、、 f (t ), 、、 , 。f (t ):(1) 。、, ;(2 );(3);(4) , 。 。 , 、 ; , , , , , , 。(1), (2 ) 。, 、 , 。 , f (t ), 。 , , , , 2 　 。 f (t )f (t ), , ;