jgg     2007 27 (6):  22-27    ISSN: 0412-1961  CN: 21-1139/TG ＯＮＰＲＥＳＥＮＴＡＣＴＩＶＩＴＹＣＨＡＲＡＣＴＥＲＩＳＴＩＣＳ ＯＦＸＩＡＮＳＨＵＩＨＥＦＡＵＬＴＺＯＮＥ ＹａｎｇＹｏｎｇｌｉｎ１,２;ＳｕＱｉｎ２ １）ＣｈｅｎｄｕＵｎｉｖｅｒｓｉｔｙｏｆＴｅｃｈｎｏｌｏｇｙ，Ｃｈｅｎｇｄｕ　６１００５９ ２）ＳｕｒｖｅｙＥｎｇｉｎｅｅｒｉｎｇＩｎｓｔｉｔｕｔｅｏｆＥａｒｔｈｑｕａｋｅＡｄｍｉｎｉｓｔｒａｔｉｏｎｏｆＳｉｃｈｕａｎＰｒｏｖｉｎｃｅ，Ｙａａｎ ６２５０００ Received: 1900-01-01  Revised: 1900-01-01  Online: null Supporting info null