摘要:把葛洲壩二江廠閘導墻的排漂孔改建為自備電廠，要在廠閘導墻上實施混凝土爆破開挖，施工場地小、施工條件復雜、控制標準嚴格、施工難度大.論述了自備電廠爆破開挖中有關控制標準確定、控制爆破設計、開挖爆破方案的選擇等試驗、研究與實踐.施工監測表明，鄰近建筑物和機電設備均未受到影響，且正常工作，運行情況良好.實踐證明，開挖爆破方案是成功的，技術措施是可行的，為改建工程創造了條件，取得了顯著的經濟效益，開挖爆破經驗可供其他工程參考.

Abstract:In o rderto u seth ed raininga ndd riftingh olesof th eG ezhoubaH ydorpowerS tation'sE rjiangP lant'sga te guid wal to rebuild a self-provided power plant, it is needed to carry out concrete demolition and excavating on the guiding wall of the plant gate, with its smal construction ground, complex construction conditions, strictly controled standard and great construction difficulty. This article talks about the tests, research and practice in the demolition and excavating for the power plant, concerning the definition of the controlling standard, designing of the controled demolition,choiceo fth ep orgram ofth ed emolitiona nde xcavating.Th orught hem onitoringo fth ec onstruction,b uildings nearby and electrical and mechanical equipments were not afected, and worked normaly, with good moving condition.The practice has proved that the demolition and excavating program carried out was successful, the technical methods werep racticable.It ha scr eatedc onditionsfo rre buildingth eg ateg uidingw allto b uildth ep owerpl ant,an dh asga ined remarkable economic benefit.The experience of the demolition and excavating in this rebuilding project can be provided to other projects for reference.
Key words:Gezhouba key water control project; self-provided power plant; rebuilding; concrete demolition and excavating