输水工程膨胀土渠坡稳定性及力学参数研究

膨胀土作为一种特殊的粘性土引发了许多地基与边坡方面的问题。通过野外勘探及地下长期观测,揭示了膨胀土的结构分带性和力学强度的时效性,提出了膨胀土边坡设计中分带取值和试验方法。在进行渠坡表面置换措施后,土体浅层失稳主要受控于开挖过程中坡面胀缩影响带的强度。

STUDY ON THE SLOPE STABILITY AND MECHANICAL PARAMETERS OF DILATIVE SOIL CANAL FOR WATER CONVEYANCE PROJECT

As a special viscous soil,dilative soil causes many problems of ground and slope.Based on the field exploration and long-term underground observation,this paper reveals the zoning of structure and the timing of mechanical strength for dilative soil,and puts forward the experiment method to obtain values by zoning in the design of dilative soil slope.After the replacement measure of the canal surface,the loss of stability of the shallow surface of soil body is mainly subject to the strength of the expansion and reduction zone of slope plane.