CAJ | 학술논문

利用长系列实测资料分析了洮河异重流运移规律和刘家峡水库低水位拉沙的特点，建立了异重流持续时间的计算公式，较好地指导了水库排沙调度。分析表明：1969—2010年洮河汛期共来沙4．267亿t，通过异重流排沙3．542亿t，低水位拉沙0．430亿t，共计排沙3．972亿t，占总来沙量的93％。同时，对今后刘家峡水库的排沙研究提出了建议：①开展洮河口排沙洞运行初期排沙方案研究；②开展黄河干流异重流测验与研究。
이용장계렬실측자료분석료조하이중류운이규률화류가협수고저수위랍사적특점，건립료이중류지속시간적계산공식，교호지지도료수고배사조도。분석표명：1969—2010년조하신기공래사4．267억t，통과이중류배사3．542억t，저수위랍사0．430억t，공계배사3．972억t，점총래사량적93％。동시，대금후류가협수고적배사연구제출료건의：①개전조하구배사동운행초기배사방안연구；②개전황하간류이중류측험여연구。
With the analysis of movement law of density current in Taohe River and the characteristics of discharging sediment during the low water level period of Liujiaxia Reservoir and the establishment of calculation formula of density current duration had been used to direct the reservoir operation and the remarkable effect of discharging sediment had been achieved. The outcomes show that during the period of 1969~2010,there are 4. 267 × 108 t sediment has been discharged from Liujiaxia Reservoir in which 3. 542 × 108 t sediment with density current and 0. 430 × 108 t sediment with discharging sediment in low water level making up 93% of total amount sediment which coming from Taohe River during flood seasons. And advices about research of Liujiaxia Reservoir sediment discharging was proposed:a)The Sediment discharge plan during early operating period of desilting tunnel at Taohe River entrance should be researched;b)Density current in the Yellow River main stream measurement and research should be carried out.