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研究不同含沙水滴灌条件下,随着灌水次数的增加滴灌管(带)的堵塞情况;灌水器出流及淤积在滴灌管(带)管腔内的泥沙含量和粒径组成。经过多次灌水试验,试验结果表明:经过11次灌水试验,D120水质情况下滴灌管(带)堵塞情况好于S120;S100和D75水质情况下,经过相同次数的灌水试验,4条滴灌管(带)堵塞灌水器个数及位置相同;S80和D75水质情况下,虽然D75水质下灌水次数多,但4种滴灌管(带)抗堵塞性能明显要好于S80水质情况下;不同水质情况下4条滴灌管(带)的前60 m,管腔内泥沙淤积量很小,70~90 m处泥沙淤积量则不同程度的增加,淤积在管腔内的泥沙中值粒径D50最大值出现在60~90 m。
To study the clogging conditions of drip irrigation tube (strip) under different drip irrigation conditions, and the sediment content and particle size distribution of drip irrigation tube (drip irrigation tube). After several irrigation tests, the results showed that after 11 irrigation tests, the drip irrigation pipe (block) blockage in D120 water quality was better than that in S120. Under the water quality of S100 and D75, after the same number of irrigation tests, 4 drip irrigation tubes With the same number and position of plugging emitter; Under the conditions of S80 and D75 water quality, although the number of irrigation under D75 water quality is more, the anti-clogging performance of the four kinds of drip irrigation tubes is better than that of S80; Under different water quality conditions In the first 60 m of drip irrigation pipe (strip), sedimentation volume in the lumen was very small, sediment deposition in 70 ~ 90 m increased to some extent, and sediment median diameter D50 was the largest The value appears at 60 ~ 90 m.