静水压力模式与动水压力模式比较分析

Comparison of Static Hydraulic Pressure and Dynamic Hydraulic Pressure

关键词:  静水压力  动水压力  强度参数

Key words:  static hydraulic pressure  dynamic hydraulic pressure  intensity parameters

摘要:

比较静水压力模式与动水压力模式下地下水的作用效果,结果表明,在水平方向上,静水压力的条块合力要大于动水压力的条块合力,两者之间存在cos²α的倍数差别;而在垂直方向上,静水压力的条块合力要小于动水压力的条块合力,其差值大小为r_wS₂sin²α.2种水压模式都是可取的,但在具体应用时,对于静水压力模式,应取快剪或不排水剪指标;对于动水压力模式,则应取用慢剪或排水剪指标.如选用的强度参数合适,2种水压力模式下计算所得的斜坡稳定性系数甚为接近.

Abstract:

The effects of ground water under static hydraulic pressure and dynamic hydraulic pressure are analyzed. In the horizontal direction,the stick is with joint efforts under static hydraulic pressure is greater than that under dynamic hydraulic pressure. Their difference is cos²α. In the vertical direction,the stick is with joint efforts under static hydraulic pressure is less than that under dynamic hydraulic pressure Their difference is r_wS₂sin²α. When using static hydraulic pressure,the quick shearing or un drained shearing parameters should be adopted. When using dynamic hydraulic pressure,the slow shearing or drained shearing parameters should be adopted In the condition of suitable intensity parameters,the slope stability coefficients are not so different under these two pressures.