静水压力对岩体边坡稳定性的影响分析

Influence of Hydrostatic Pressure on Rock Slope Stability

静水压力对岩体边坡抗滑移稳定性的影响无处不在,在河道和水库两岸常会发现因河道或水库水位的交替消长而发生岸边岩体的滑移与坍塌,通过长期的观察和总结,发现这种情况的发生与岩体边坡外邻水水位的消长以及岩体节理裂缝内水位的变化密切相关。本文通过对水位在不同变化情况下边坡稳定性的定量分析,结合不同实际场景,讨论了边坡外邻水和节理裂缝内充水这两种情况对岩体边坡稳定性影响大小的对比,得出了以下结论:岩体边坡外邻水水位的上涨会增大岩体边坡的抗滑移稳定性;而岩体节理裂缝内水位的上涨会减小岩体边坡的抗滑移稳定性,并定量对比了二者之间的大小关系。

The effect of hydrostatic pressure on the anti-sliding stability of rock slope is ubiquitous. It is often found in the banks and reservoirs of the rock mass during bank slipping and collapsing. Through the long-term observation and conclusion, it is found that the occurrence of this situation is closely related to the growth and decline of water level outside the rock slope and the water level change within the rock joint fractures. Based on the quantitative analysis of the slope stability under different water level changes and the combination of different practical scenarios, this paper discusses the comparison of the impact of the two adjacent water conditions on the stability of rock mass slope. The following conclusions are obtained： the rise of water level outside the rock mass slope will increase the anti-sliding stability of the rock mass slope; the rise of the water level in the joint fracture of the rock mass will reduce the anti-slip of the rock mass slope stability, and quantitative comparison of the size of the relationship between the two.