土的动力触探指标——条件动阻力P_■,是根据操作人员在整个钻孔触探过程中连续记录的锤击数和探头的贯入深度确定的。计算P_(?)时,要引入系数,这些系数是用来估计探杆与孔壁间的摩擦以及由于探测器的质量和触探杆的长度随深度的增加而引起的冲击能量的损失的。因为这些系数的值是大致规 The dynamic penetration index of the soil, the conditional dynamic resistance P_■, is determined based on the number of hammers continuously recorded by the operator during the entire borehole penetration and the penetrating depth of the probe. To calculate P_(?), introduce coefficients that are used to estimate the friction between the probe and the hole wall and the loss of impact energy due to the detector’s mass and the length of the probe. Because the value of these coefficients is roughly