人民黄河
人民黃河
인민황하
Yellow River
2015年
1期
146-148
,共3页
渠道衬砌%渠道输水损失%动水法%静水法%宁夏引黄灌区
渠道襯砌%渠道輸水損失%動水法%靜水法%寧夏引黃灌區
거도츤체%거도수수손실%동수법%정수법%저하인황관구
canal lining%conveyance losses of irrigation canal%dynamic water measurement%still water measurement%Yellow River irriga-tion area of Ningxia
衬砌渠道减少输水损失量是宁夏水权转让水量计算的关键因子，关系到节水量的计算、节水工程规模的确定等。采用动水法和静水法相结合的方式对宁夏灌区典型区衬砌渠道减少输水损失量进行估算，动水法试验结果表明：干渠衬砌后减少渗漏损失量为0．054 m3／（s·km），占未衬砌渠道渗漏损失量的55％，支、斗渠衬砌后减少的渗漏损失量占未衬砌渠道渗漏损失量的比例与干渠相当，约为56％；静水法试验结果表明：斗渠衬砌后渗漏强度是土渠渗漏强度的27％，即通过衬砌可减少73％的渗漏损失量。
襯砌渠道減少輸水損失量是寧夏水權轉讓水量計算的關鍵因子，關繫到節水量的計算、節水工程規模的確定等。採用動水法和靜水法相結閤的方式對寧夏灌區典型區襯砌渠道減少輸水損失量進行估算，動水法試驗結果錶明：榦渠襯砌後減少滲漏損失量為0．054 m3／（s·km），佔未襯砌渠道滲漏損失量的55％，支、鬥渠襯砌後減少的滲漏損失量佔未襯砌渠道滲漏損失量的比例與榦渠相噹，約為56％；靜水法試驗結果錶明：鬥渠襯砌後滲漏彊度是土渠滲漏彊度的27％，即通過襯砌可減少73％的滲漏損失量。
츤체거도감소수수손실량시저하수권전양수량계산적관건인자，관계도절수량적계산、절수공정규모적학정등。채용동수법화정수법상결합적방식대저하관구전형구츤체거도감소수수손실량진행고산，동수법시험결과표명：간거츤체후감소삼루손실량위0．054 m3／（s·km），점미츤체거도삼루손실량적55％，지、두거츤체후감소적삼루손실량점미츤체거도삼루손실량적비례여간거상당，약위56％；정수법시험결과표명：두거츤체후삼루강도시토거삼루강도적27％，즉통과츤체가감소73％적삼루손실량。
Water conveyance losses for canal lining in the Yellow River irrigation area is one of the key parameters for water rights transfer in Ningxia,which determines the quantity of water-saving and water-saving project scale. The calculation of conveyance losses of irrigation canal was discussed in this paper. The dynamic water method and still water measurement were used to estimate the water conveyance losses before and after canal lining respectively. The results of dynamic water method show that 0. 054 m3/s. km of the water conveyance losses is reduced in the main canal,which accounts for 55% of water conveyance losses before canal lining. Water conveyance losses are reduced in branch canal,which accounts for 56% of water conveyance losses before canal lining. The results of still water measurement show that infil-tration intensity of canal lining in lateral canal is 27% of earth canal,which means that 73% of the water conveyance losses can been re-duced.
