水利与建筑工程学报
水利與建築工程學報
수리여건축공정학보
TECHNIQUE OF SEEPAGE CONTROL
2014年
6期
148-153
,共6页
水电站%长引水隧洞%阻抗式调压井
水電站%長引水隧洞%阻抗式調壓井
수전참%장인수수동%조항식조압정
hydropower station%long distance diversion tunnel%impedance surge shaft
引水式水电站中的调压井在系统稳定运行中起着重要作用。针对低水头、大流量、长距离引水隧洞的水电站，通过水力学、传统结构力学和有限元三种方法对简单式、阻抗式和带上室的简单式三种调压井形式进行计算比选。结果表明：阻抗式调压井具有经济性、波动衰减快、水头损失小、结构简单、施工方便等优点；对于稳定断面大、井筒高、体形多变及受力复杂的调压井，采用结构力学法和有限元法进行调压井计算，阻抗式调压井的受力较小，整体稳定，选用阻抗式调压井是合理的。因此，此方法具有的理论意义与工程实践价值。
引水式水電站中的調壓井在繫統穩定運行中起著重要作用。針對低水頭、大流量、長距離引水隧洞的水電站，通過水力學、傳統結構力學和有限元三種方法對簡單式、阻抗式和帶上室的簡單式三種調壓井形式進行計算比選。結果錶明：阻抗式調壓井具有經濟性、波動衰減快、水頭損失小、結構簡單、施工方便等優點；對于穩定斷麵大、井筒高、體形多變及受力複雜的調壓井，採用結構力學法和有限元法進行調壓井計算，阻抗式調壓井的受力較小，整體穩定，選用阻抗式調壓井是閤理的。因此，此方法具有的理論意義與工程實踐價值。
인수식수전참중적조압정재계통은정운행중기착중요작용。침대저수두、대류량、장거리인수수동적수전참，통과수역학、전통결구역학화유한원삼충방법대간단식、조항식화대상실적간단식삼충조압정형식진행계산비선。결과표명：조항식조압정구유경제성、파동쇠감쾌、수두손실소、결구간단、시공방편등우점；대우은정단면대、정통고、체형다변급수력복잡적조압정，채용결구역학법화유한원법진행조압정계산，조항식조압정적수력교소，정체은정，선용조항식조압정시합리적。인차，차방법구유적이론의의여공정실천개치。
The surge shaft of diversion type hydropower stations plays an important role in the stability of the system .Re-garding to the hydropower stations with large flow ,low water head and long distance diversion tunnel ,the simple type , impedance type and the simple type with upper room surge shafts were calculated and compared by adopting hydraulic method ,traditional structural mechanics method and finite element method .The results showed that :Impedance surge shaft had the advantages of economy ,fast wave decay ,small water head loss ,simple structure and convenient construc-tion ;For a surge shaft with large stable section area ,high shaft ,complex shape and complex stress ,through the calcula-tion of structural mechanics method and finite element method ,it was drawn that the impedance surge shaft suffered less stress ,and remained stable on the whole .Therefore ,the selection of impedance surge shaft is reasonable ,and the appli-cation of this shaft has theoretical significance and practical value .
