| Preliminary study on hydraulic performance of straw composite pipe |
|
View Fulltext View/Add Comment Download reader |
| |
| DOI：10.7606/j.issn.1000-7601.2020.02.07 |
| Key Words: straw composite pipe (SCP) preparation flow rate infiltration rate uniformity |
| Author Name | Affiliation | | WU Feng | School of water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou, Henan 450046,China
Henan Key Laboratory of Water\|saving Agriculture, Zhengzhou, Henan 450046, China | | CHU Yunwang | School of water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou, Henan 450046,China | | ZAI Songmei | School of water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou, Henan 450046,China
Henan Key Laboratory of Water\|saving Agriculture, Zhengzhou, Henan 450046, China | | WANG Fubin | School of water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou, Henan 450046,China | | LIU Shengdong | School of water Conservancy, North China University of Water Resources and Electric Power, Zhengzhou, Henan 450046,China |
|
| Hits: 1132 |
| Download times: 657 |
| Abstract: |
| A new type of irrigation pipe named straw composite pipe (SCP)was developed.The manufacturing method of SCP was introduced, and the field test of subsurface irrigation using SCP was carried out to study the irrigation effect of SCP after it was implemented underground.In the experiment, the main factors were the straw content and the length of SCP, and the irrigation indexes such as accumulated flow rate, infiltration rate, and uniformity of irrigation were analyzed.Results showed that at the levels of straw content of 5%, 7%, and 9%, the accumulated flow rateper unit length of SCP with a length of 3.5 m was 71.66%, 77.52%, and 8.14% higher than that of SCP with a length of 1.0 m, the irrigation uniformity of SCP with a length of 3.5 m was 3.60%, 5.45%, and 13.72% lower than that of SCP with a length of 1.0 m,respectively. With tube lengths of 1.0 m and 3.5 m, the cumulative flow rate per unit length of a SCP with a straw content at 7% and 9% decreased by 12.60%, 15.80%, and 9.09%, 18.70%, respectively, compared with that of the straw content of 5%.When the straw content was 7%, the fluctuation of infiltration rate of the two tube lengths of SCP was the smallest, and the water discharge performance was relatively stable. When the content of straw was 7%, the uniformity of irrigation of SCP with a length of 1.0 m reached 85.00%, and when the content of straw was 5%, the uniformity of irrigation of SCP with a length of 3.5 m reached 81.38%. The test indexes of accumulated flow rate, infiltration rate, and uniformity were considered, it was showed that SCP had the condition of being used as irrigation capillary for field irrigation. When the straw content was 5%~7%, the hydraulic performance of SCP was the best. |
|
|
|