Troubleshooting : When pipe blockage happened we should take immediate steps are repeated inverted pump methods gradually concrete pump outlet suction hopper back to re-mixing after delivery .

排除方法：当发生堵管时，应 立即采取反复进行正、反转泵的方法，逐渐使泵出口的混凝土 吸回料斗重新拌合后再输送。

Venting in the underside surface can effectively decrease the unit suction force but reduction relates to position and pressure of venting . ( 2 ) Take advantage of theoretical calculation to compute suction force then compared with tests results .

采用喷气的方法可有效降低模型的单位吸附力，但是降低幅度与喷气气压和开孔位置等有重要关系。（2） 通过理论计算的方式计算 吸附力并与试验结果对比。

In order to predict chloride penetration under most common circumstances it is necessary however to take into consideration the combined action of different transport mechanisms such as capillary suction diffusion and convection .

为了预测在大多数一般条件下的氯离子侵入，仍然有必要 考虑不同的传输机理的作用，比如 毛细 吸收、扩散和对流。