水电与新能源
水電與新能源
수전여신능원
HYDROPOWER AND NEW ENERGY
2015年
6期
6-12
,共7页
抽水蓄能电站%衬砌形式%钢筋混凝土岔管%钢岔管%有限元
抽水蓄能電站%襯砌形式%鋼觔混凝土岔管%鋼岔管%有限元
추수축능전참%츤체형식%강근혼응토차관%강차관%유한원
Qiongzhong Pumped Storage Power Station%lining type%reinforced concrete branch pipe%steel branch pipe%finite element method
琼中抽水蓄能电站采用一洞三机的布置形式，岔管段最小覆盖层厚度与最小主应力条件满足规范要求，且运行期衬砌结构整体裂缝宽度处于可控范围内，检修期间，在外水压力作用下结构出现整体受压破坏的可能性较小，具备采用钢筋混凝土衬砌的条件。另外通过对不同钢岔管方案的比较，认为钢板衬砌需要的高强钢材用量较大，考虑到直接投资和工期方面的明显优势，最终推荐采用衬砌厚度为1．0 m的钢筋混凝土衬砌方案。
瓊中抽水蓄能電站採用一洞三機的佈置形式，岔管段最小覆蓋層厚度與最小主應力條件滿足規範要求，且運行期襯砌結構整體裂縫寬度處于可控範圍內，檢脩期間，在外水壓力作用下結構齣現整體受壓破壞的可能性較小，具備採用鋼觔混凝土襯砌的條件。另外通過對不同鋼岔管方案的比較，認為鋼闆襯砌需要的高彊鋼材用量較大，攷慮到直接投資和工期方麵的明顯優勢，最終推薦採用襯砌厚度為1．0 m的鋼觔混凝土襯砌方案。
경중추수축능전참채용일동삼궤적포치형식，차관단최소복개층후도여최소주응력조건만족규범요구，차운행기츤체결구정체렬봉관도처우가공범위내，검수기간，재외수압력작용하결구출현정체수압파배적가능성교소，구비채용강근혼응토츤체적조건。령외통과대불동강차관방안적비교，인위강판츤체수요적고강강재용량교대，고필도직접투자화공기방면적명현우세，최종추천채용츤체후도위1．0 m적강근혼응토츤체방안。
The layout and design of the high pressure diversion pipes for Qiongzhong Pumped Storage Power Station are introduced.A layout scheme of"one pipe for three units"is chosen.Considering that the specification requirements on the minimum cover depth and the minimum principle stress conditions of the branch pipes are satisfied, and the crack width in the concrete lining is acceptable under operation conditions, the scheme of reinforced concrete lining is feasi-ble.In addition, the overall safety factor against compressive failure of the lining is considerable under maintenance con-ditions.On the other hand, several steel branch pipe schemes are presented and compared.It shows that the reinforced concrete lining scheme outperforms the steel lining schemes with less investment and also less construction period.Thus, a reinforcement concrete lining scheme with 1.0 m thickness is adopted as the final design.
