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粘性泥流作为粘性泥石流这一山区最常见也是危害最大的泥石流类型的基质,其堆积特性在较大程度上可以反映粘性泥石流的运动规律。设计建造室内直槽概化模型试验台,反复开展了不同条件组合下的粘性泥流直槽堆积试验。试验结果进一步证实:粘性泥流在任意沟道坡度下均能发生堆积,堆积厚度沿程不等。基于不等厚度假定,应用一维静力理论分析方法导出了两种简单条件下粘性泥流的堆积形态曲线方程。经与模型试验及野外实测曲线对比,二者符合情况较好,所得方程可供预测粘性泥石流在天然沟道中的堆积范围提供参考。
As a sticky debris flow in this mountainous area, sticky mud flow is the most common and hazardous type of debris flow. The accumulation characteristics of viscous mud flow can reflect the movement law of viscous debris flow to a large extent. Design and construction of indoor straight slot generalized model test bed, repeatedly carried out under different conditions combination of viscous mud straight slot accumulation test. The test results further confirm: viscous mud flow can occur in any channel gradient accumulation, accumulation thickness along the range. Based on the assumption of unequal thickness, a one-dimensional static theory analysis method was used to derive two kinds of curve equations for the accumulation of viscous mud flow under simple conditions. Compared with the model test and the field measured curve, the two are in good agreement with each other and the obtained equation can be used as a reference for predicting the accumulation range of viscous debris flow in the natural channel.