CAJ | 학술논문

通过对都江堰市龙池镇麻柳沟泥石流灾害现场调查,分析了泥石流的特征及形成条件,并对沟道内松散固体物质储量进行了计算,分析了危险区范围。结果表明：麻柳沟流域的地形特征为泥石流形成提供了有利的地形条件,“5.12”汶川地震和“4.20”芦山地震为泥石流的形成提供了丰富的物源条件,多次强降雨为泥石流的启动提供了充足的水源条件。通过计算得出,麻柳沟沟道内的松散固体物质储量约为29.21×104 m3,其中形成区13.19×104 m3,流通区3.27×104 m3,堆积区12.75×104 m3,泥石流最大危险范围为0.2471 km2。
통과대도강언시룡지진마류구니석류재해현장조사,분석료니석류적특정급형성조건,병대구도내송산고체물질저량진행료계산,분석료위험구범위。결과표명：마류구류역적지형특정위니석류형성제공료유리적지형조건,“5.12”문천지진화“4.20”호산지진위니석류적형성제공료봉부적물원조건,다차강강우위니석류적계동제공료충족적수원조건。통과계산득출,마류구구도내적송산고체물질저량약위29.21×104 m3,기중형성구13.19×104 m3,류통구3.27×104 m3,퇴적구12.75×104 m3,니석류최대위험범위위0.2471 km2。
The characteristics and formation conditions of Maliu gully debris flow were analyzed by field investigation in Longchi, Duj iangyan, Sichuan Province. The storage capacity of loosening solid matter was calculated and the range of danger zone in this area was designated. The results show that the topographic characteristics of Maliu gully basin provided favorable terrain conditions for the debris flow;besides, the Wenchuan earthquake and the Lushan earthquake have provided rich source conditions,and many heavy rainfall events have offered adequate water conditions for the formation of the debris flow.Moreover,the calculations show that the storage capacity of loosening solid matter is about 29.21 ×104 m3 in Maliu gully,with about 13.19 × 104 m3 in formation area,3.27 × 104 m3 in flowing area,12.75 × 104 m3 in accumulation area.In addition,the maximal hazard zone range of debris flow is 0.2471 km2 .