Influence of Discharge and ?h?nn?l G??m?try on S????g? Losses from S???nd?ry ??n?l

Abstract

S????g? is th? m?st serious f?rms ?f w?t?r loss in ?n irrig?ti?n ??n?l n?tw?rk. S????g? l?ss m?stly d???nd ?n th? ?h?nn?l g??m?try. ?x??ssiv? s????g? l?ss?s ??n ??us? w?t?r l?gging ?nd s?il s?linity du? t? whi?h th? ?ultiv?bl? ?r? r?du??d, ?nd r?sults in ? l?ss ?f ??t?nti?l ?r?? ?r?du?ti?n. In this ????r, s????g? l?ss fr?m ? (S?rki Min?r) th?t ?ff t?k?s fr?m Sh?hu br?n?h ?f J?m?r?? ??n?l w?s d?t?rmin?d. R?l?v?nt hydr?uli? d?t? w?s r???rd?d ?t str?t?gi? l???ti?ns ?nd s????g? l?ss?s w?r? m??sur?d by infl?w- ?utfl?w m?th?d r?s???tiv?ly. Lin??r r?gr?ssi?n w?s ?m?l?y?d t? d?v?l??? ?m?iri??l r?l?ti?ns f?r ??m?uting s????g? l?ss?s with r?s???t t? ?h?nn?l g??m?try. ??-Ty?? ?nd ?ygmy ?urr?nt m?t?rs w?s us?d t? m??sur? th? dis?h?rg? ?t th? diff?r?nt s??ti?n. Th? r???rd?d d?t? ?f hydr?uli? ?h?r??t?risti?s w?s ??rr?l?t?d using lin??r r?gr?ssi?n ?n?lysis t? d?v?l?? ?n ?m?iri??l ?qu?ti?n f?r s????g? l?ss?s with ?h?nn?l g??m?try ??r?m?t?rs.Th? results r?v??l?d th?t th? m?ximum s????g? l?ss?s w?r? ?t 0-5RD (4%) f?ll?w?d by 5-10RD (3.4%), 10-15RD (3.4%) 15-20RD (3.5%), ?nd th?n 20-25RD (2.9%) ?nd ?v?r ?ll s????g? l?ss?s w?s 17% in th? min?r. Statistical analysis (LRA) shows significantly positive relationship at (?<0.05) f?r s????g? l?ss?s and dis?h?rg? (r²=0.962), w?tt?d ??rim?t?rs (r²=0.943), fl?w ?r?? (r²=0.914) ?nd t?? width (r²=0.967). Th?s? ?qu?ti?ns ??uld b? us?d t? ?stim?t? ??n?l s????g? l?ss?s with?ut g?ing thr?ugh th? ??nv?nti?n?l m?th?d.