地震灾害论文：汶川地震后四川绵竹市清平乡文家沟泥石流灾害调查研究.pdfVIP

Journal of Eng ineering Geology 工程地质学报 1004- 9665/2010/ 18( 6) 082710 * 余 斌 马 煜 吴雨夫 ( 610059) 2008 5 12, , - , 3, 5, 8 13 4 3 8 13 227mm, 25h, 310 10 m ; 7 , 5, 39, 479, 435 16% -, 8 13, , - : TU457, P642. 22 : A INVESTIGATION OF SEVERE DEBRIS FLOW HAZARDS INWENJIA GUL LY OF SICHUAN PROVINCE AFTER THE WENCHUAN EARTHQUAKE YU B in MA Yu WU Yufu (S tateK ey Laboratory of Geohazard Prevention and Geoenv ironm entP rotection, Chengdu University of echnology, Chengdu 6 10059) Abstract M ny debris flow h z rds w ere triggered recently in the epicenter re of the 2008W enchu n E rth qu ke. The severest debris flow is the debris flow in W enji Gu lly on Aug. 13, 20 10. W enji Gully w s smi ply nd ord in ry gu lly nd h d no debr is flow t ll before theW enchu n E rthqu ke. The form tion conditions of debris flow s were tot lly ch nged by gi nt l ndslide c used by the e rthqu ke. The gi nt l ndslide form ed l ndslide! debris deposition in the gu lly. The debris deposition h d volume ofmore th n 30m illion cub ic meters. The sedi ments w ere e sily eroded by fl sh flood nd formed debr is flow s. In the three r in ing se sons fter the e rthqu ke, tot l of five l rge sc le nd gi nt sc le debris flow w ere triggered. The l rgest nd most h rm fu l debris flow occurred on Aug. 13, 2010. The tot l r inf ll during the debris flow w s 227mm, nd the dur tion of debris flow w s 25 hours. The volume of debris flow w s 31m illion cub icmeters. The debr is flow resulted in 7 f t lities, 5 persons lis ted sm issing, 39 persons injured, 479 houses buried, nd d irect econom ic loss ofRMB 430 m illion. About 16% sed mi ents of the l ndslidedebris deposition flew dow n ou t of the gully during the five l rge sc le debris flow s. N ew * : 2010 - 11- 20; : 2010 - 11- 29. : ( (DZKJ0810) . : , , . Em i:l drbin