人民黄河
人民黃河
인민황하
Yellow River
2014年
1期
3-5
,共3页
潼关高程%入流角%黄渭分离工程%渭河%黄河
潼關高程%入流角%黃渭分離工程%渭河%黃河
동관고정%입류각%황위분리공정%위하%황하
Tongguan elevation%inflow angle%separating project between the Yellow River and Weihe River%Weihe River%Yellow River
潼关高程变化是治黄的焦点问题之一，而黄河、渭河、北洛河三河汇流区河势经常发生剧烈变化，一旦渭河入黄流路与黄河流路呈顶托状态，将降低对潼关高程的冲刷作用，直接影响渭河防洪安全。在汇流区修建黄渭分离工程，一方面可以使渭河和黄河水流各尽所能地冲刷降低潼关高程，另一方面可以使渭河顺畅入黄，减轻黄河对渭河的顶托。分离工程中段竣工后经历的洪水考验表明：该工程调整并稳定了渭河入黄流路，分离效果和防洪效果显著。
潼關高程變化是治黃的焦點問題之一，而黃河、渭河、北洛河三河彙流區河勢經常髮生劇烈變化，一旦渭河入黃流路與黃河流路呈頂託狀態，將降低對潼關高程的遲刷作用，直接影響渭河防洪安全。在彙流區脩建黃渭分離工程，一方麵可以使渭河和黃河水流各儘所能地遲刷降低潼關高程，另一方麵可以使渭河順暢入黃，減輕黃河對渭河的頂託。分離工程中段竣工後經歷的洪水攷驗錶明：該工程調整併穩定瞭渭河入黃流路，分離效果和防洪效果顯著。
동관고정변화시치황적초점문제지일，이황하、위하、북락하삼하회류구하세경상발생극렬변화，일단위하입황류로여황하류로정정탁상태，장강저대동관고정적충쇄작용，직접영향위하방홍안전。재회류구수건황위분리공정，일방면가이사위하화황하수류각진소능지충쇄강저동관고정，령일방면가이사위하순창입황，감경황하대위하적정탁。분리공정중단준공후경력적홍수고험표명：해공정조정병은정료위하입황류로，분리효과화방홍효과현저。
The elevation of Tongguan is one of the focus issues of the Yellow River management. The drastic changes frequently occur in the conflu-ence area of the Yellow River,Weihe River and Beiluo River. Once the flow paths of Weihe River and the Yellow River are in jacking situation, it will reduce the scouring function on Tongguan elevation as well as directly affect the flood protection safety of Weihe River. Both rivers could flow smoothly by constructing the separation project between the Yellow River and Weihe River in the confluence area:on one hand,the water flow of these two rivers could adequately scour the Tongguan elevation respectively,on the other hand,the Weihe River could flow into the Yellow River smoothly,and the jacking impact of the Yellow River on Weihe River could be reduced. The floods that happened after the completion of middle section of the separation project show that:the project regulates and stabilizes the flow paths of Weihe River flowing into the Yellow River and its separation and flood protection performance is remarkable.
