葛洲坝水利枢纽自备电厂混凝土开挖爆破的研究与实践

摘要:把葛洲坝二江厂闸导墙的排漂孔改建为自备电厂，要在厂闸导墙上实施混凝土爆破开挖，施工场地小、施工条件复杂、控制标准严格、施工难度大.论述了自备电厂爆破开挖中有关控制标准确定、控制爆破设计、开挖爆破方案的选择等试验、研究与实践.施工监测表明，邻近建筑物和机电设备均未受到影响，且正常工作，运行情况良好.实践证明，开挖爆破方案是成功的，技术措施是可行的，为改建工程创造了条件，取得了显著的经济效益，开挖爆破经验可供其他工程参考.

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