The field pore pressure monitor is one indispensable and valid means to judge foundation steady or not . When the total excess static pore water pressure is positive value and it is smaller than 0.67 times of surcharge loading then foundation should be stable .

现场孔隙水压力监测是判断地基是否稳定的必要和有效手段，当总的超静孔隙水压力处于正的 状态时，只要小于0.67倍 堆 载荷载，地基就处于稳定状态。