It is found that the situation near the soil pipe laying and the water pressure in pipe are the main factors.
经过研究发现，管道埋设附近的土质情况和管道的供水压力是主要因素。
The appearing and lasting time of pipe flow is related to the rainfall intensity, duration of rainfall, the previous water content of soil and the location of soil pipe in soil section.
管流出现的时间、管流历时与降雨强度、降雨历时、土壤前期水分含量和土管所处的土壤剖面位置等因素有关。
The appearing and lasting time of pipe flow is related to the rainfall intensity, duration of rainfall, the previous water content of soil and the location of soil pipe in soil section.
管流出现的时间、管流历时与降雨强度、降雨历时、土壤前期水分含量和土管所处的土壤剖面位置等因素有关。
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