Viscous debris flows are saturated with loose earth on slopes or on gully beds,which are rich in clay and have a bulk density of >1.8-1.9 t/m~3 and the static shear stress of >30Pa.

• 粘性泥石流产流是斜坡或沟床中粘粒含量较高的松散土体与入渗为主的水体结合；产生容重和起始静力分别大于1.；8-1