虎跳峡工程区松散堆积体原位直剪试验研究

In situ direct shear tests of incompact-deposit bodies in Tiger-leaping gorge area

摘要: 松散堆积体型斜坡在虎跳峡工程区河段两岸普遍发育,研究其剪切强度对于此类库岸斜坡的稳定性评价具有重要意义。作者设计了堆载式加荷直剪试验方法,并经野外大面积现场试验,获得了堆积体直剪时的剪应力-应变关系曲线,对堆积体的剪切强度性质进行了相应的理论分析,同时为工程区堆积体稳定性评价提供了可参考的c、φ值。

Abstract: There are large numbers of incompact-deposit bodies in Tiger-Leaping Gorge area of Jingsha River.The shear strength properties of the deposit bodies are very important to the slope stability analysis.In this paper,pile-loading direct shear test was put forward and carried out in fields synchronously.Though the results we obtain the stress-strain relation curves of deposit bodies,at the same time,the shear strength parameters were attained too.