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。