四川峨边县蒋沟矿渣侵蚀泥石流成因与特征  

Formation and Characteristics of Mine-slag Debris Flows from Jianggou Ravine in Ebian County,Sichuan Province

作　　者：吕学军[1] 倪化勇[2] 徐如阁[2] 巴仁基[2] 

机构地区：[1]滨州学院建筑与城乡规划系,山东滨州256603 [2]成都地质矿产研究所,成都610081

出　　处：《水土保持研究》2011年第3期83-87,共5页Research of Soil and Water Conservation

基　　金：国土资源调查项目(121201814019);滨州学院青年人才创新工程科研基金项目(BZXYQNLG200503)

摘　　要：四川峨边县蒋沟是一条典型的矿渣型泥石流沟,在侵蚀作用下时常发生泥石流并造成严重危害。该文采用调查、测绘和综合研究相结合的方法,论述了蒋沟矿渣侵蚀泥石流的成因和特征。形成条件方面,矿渣侵蚀类泥石流具有物源集中和机械组成固定性特征;发生过程呈现出降雨-侵蚀-崩滑-搬运复合型和循环性,侵蚀成为泥石流形成和发生的关键环节;泥石流特征则主要表现为堆积物成分单一,堆积比降小,暴发频率高和地貌塑造作用强等方面。最后,针对成因和特征,提出了以水土分离、固床和护坡等工程措施为主,以矿山植被恢复措施为辅的防治建议。Jianggou Ravine is a typical mine-slag debris flow-induced gully,where debris flow with an incision process frequently occurred and caused serious damages.In this paper,on the basis of field investigation,survey and comprehensive research,the formation and characteristics are discussed and corresponding prevention countermeasures are put forward.In terms of debris flow forming condition,mine-slag debris flow-induced in Jianggou Ravine is representative for mass concentricity and grain-composition fixity.A complex and circle process,namely rainfall-erosion-collapse or landslide-engulfment,existed during debris flow occurrence and erosion is the key process.As characteristics are concerned,debris flows induced by mine slag are typicality in simple deposition,smaller deposition obliquity,high frequency and intense evolvement in landform.In accordance with such forming condition and occurrence characteristics,corresponding countermeasures are put forward at the end of this paper,including main engineering controls such as separating method between water and soil,gull-bed fixing method,slope blocking method and accessorial vegetation recovering method.

关 键 词：泥石流 矿渣 侵蚀 蒋沟 

分 类 号：P642.23[天文地球—工程地质学]