CAJ | 학술논문

2010年8月8日,舟曲县城北侧三眼峪沟和罗家峪沟暴发的特大山洪泥石流,给舟曲县城人民生命财产造成了巨大损失。本文基于现场调查,分析了三眼峪沟泥石流的形成条件和未来泥石流的发展趋势。调查发现,独特的地形条件、极其丰富的固体物质储备和极端降雨条件,导致了＂8.8＂特大泥石流灾害。崩塌堆积体是三眼峪沟泥石流固体物质的最主要来源,受＂8.8＂泥石流的影响,沟内堆积物的稳定性进一步降低,一旦有强降雨发生,该沟很可能再次发生泥石流,并且泥石流的规模和活动性可能进一步增强。
2010년8월8일,주곡현성북측삼안욕구화라가욕구폭발적특대산홍니석류,급주곡현성인민생명재산조성료거대손실。본문기우현장조사,분석료삼안욕구니석류적형성조건화미래니석류적발전추세。조사발현,독특적지형조건、겁기봉부적고체물질저비화겁단강우조건,도치료＂8.8＂특대니석류재해。붕탑퇴적체시삼안욕구니석류고체물질적최주요래원,수＂8.8＂니석류적영향,구내퇴적물적은정성진일보강저,일단유강강우발생,해구흔가능재차발생니석류,병차니석류적규모화활동성가능진일보증강。
Debris flow occurred on August 8, 2010 at the Sanyanyu Gulley and Luojiayu Gulley, Zhouqu County, Gansu Province caused the county a big loose of both lives and properties. In this paper, conditions leading to the debris flow in Sanyanyu Gulley and trend of debris flow in the gulley are analyzed based on a site investigation immediately after the disaster. It is found that the debris flow was resulted from the combination of an unique landform of the gulley, extremely abundant loose materials in the gulley and usual rainstorm. Source materials of the debris flow were mainly from rackfall deposits in the gulley. Because stability of source materials in the gulley has been reduced as a result of strong erosion of the ＂8.8＂ debris flow, it is believed that it is very likely that debris flow will occur in gulley again and that its scale and intensity may become greater.