CAJ | 학술논문

猴子岩水电站大坝坝基最大下挖深度达80 m,深窄基坑施工过程中,遇到施工道路布置、基坑边坡稳定、高强度开挖运输、基坑排水等各种复杂技术难题,尤其是深基坑黏质粉土液化层施工道路布置及路基处理、深基坑厚层黏质粉土开挖及其降排水等问题。针对上述问题,开展了快速开挖施工技术与实施方案的研究,提出了基坑降排水及快速开挖应对措施,其经验可供类似混凝土面板堆石坝施工借鉴。
후자암수전참대패패기최대하알심도체80 m,심착기갱시공과정중,우도시공도로포치、기갱변파은정、고강도개알운수、기갱배수등각충복잡기술난제,우기시심기갱점질분토액화층시공도로포치급로기처리、심기갱후층점질분토개알급기강배수등문제。침대상술문제,개전료쾌속개알시공기술여실시방안적연구,제출료기갱강배수급쾌속개알응대조시,기경험가공유사혼응토면판퇴석패시공차감。
In the excavation of narrow and deep foundation pit of Houziyan Hydropower Station, with the maximum excavated depth of 80m, the construction encounters a variety of challenges such as difficult layout of construction roads, unstable slope sta-bility of foundation pit, high intensity excavation and transportation as well as large drainage volume, especially the road layout and subgrade treatment due to liquefied layer of clayey silt, and the excavation, dewatering and drainage for thick clay-silt over-burden. For solving these problems, studies on construction technology and rapid excavation is carried out and corresponding countermeasures are proposed.