| Effects of flushing strategies on the anti\|clogging performance of tunnel surge drip irrigation emitters |
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| DOI：10.7606/j.issn.1000-7601.2025.04.19 |
| Key Words: emitter clogging flushing method anti\|clogging ability flushing pressure rated flow rate |
| Author Name | Affiliation | | WANG Yundong | Yunnan Transportation Investment and Construction Group Highway Construction Company, Kunming, Yunnan 650500, China | | LI Ronghui | Yunnan Transportation Investment and Construction Group Highway Construction Company, Kunming, Yunnan 650500, China | | CAI Yulei | Yunnan Transportation Investment and Construction Group Highway Construction Company, Kunming, Yunnan 650500, China | | CAO Li | College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China | | LI Na | Faculty of Modern Agriculture Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650500, China | | NI Dong | Associate Researcher, Key Laboratory of Road Traffic Environmental Protection Technology, Ministry of Transport, Beijing 100088, China | | YU Liming | Faculty of Modern Agriculture Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650500, China | | WANG Wen’e | College of Water Resources and Architectural Engineering, Northwest A&F University, Yangling, Shaanxi 712100, China |
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| Abstract: |
| To extend the service life of drip emitters used in tunnel water drainage, this study investigated the effects of two flushing methods-emitter flushing (E) and lateral flushing (L)-on relative flow rate trends, emitter clogging conditions, and flow recovery performance under three flushing pressures (0.05, 0.10, and 0.15 MPa) and three rated flow rates (2, 4, and 8 L·h-1). The results indicated that flushing measures significantly enhanced the clogging resistance of tunnel water drainage emitters. The effective watering frequency (relative flow rate ≥ 75%) of flushed emitters under flushing treatment increased by 57.27% compared to the unflushed control group. Overall, lateral flushing outperformed emitter flushing. The flow recovery capabilities of emitters improved significantly with increasing rated flow rates. After flushing, the effective irrigation frequencies of emitters with flow rates of 2, 4 L·h-1, and 8 L·h-1 increased by 24.39%, 33.85%, and 146.47%, respectively, with an optimal flushing pressure of 0.10 MPa. These findings offer a practical reference for selecting appropriate anti\|clogging measures in real\|world applications. |
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