【摘要】：根據(jù)施工過(guò)程巖層揭露情況,結(jié)合圍巖變形監(jiān)測(cè)數(shù)據(jù),分析圍巖變形狀況。根據(jù)施工期巖層探測(cè)結(jié)果,建立地下廠房洞室群大型有限元模型,利用變形監(jiān)測(cè)數(shù)據(jù),對(duì)地下廠房洞室群的圍巖力學(xué)參數(shù)進(jìn)行反演分析;結(jié)合數(shù)值仿真結(jié)果,分析圍巖變形規(guī)律。研究結(jié)果表明:主廠房第一層開(kāi)挖穿越Ⅲ_1,Ⅲ_2和Ⅳ類(lèi)圍巖,圍巖變形受巖層性質(zhì)影響較明顯,在Ⅳ類(lèi)圍巖穿越的副廠房位置,圍巖變形較大;廠橫0+153.81斷面的變形明顯比其他斷面的大,在后續(xù)開(kāi)挖過(guò)程中應(yīng)加強(qiáng)對(duì)Ⅳ類(lèi)圍巖變形的監(jiān)控量測(cè)。
[Abstract]:According to the exposure of rock strata during construction and the monitoring data of surrounding rock deformation, the deformation status of surrounding rock is analyzed. A large finite element model of underground powerhouse cavern group was established according to the results of rock stratum detection during construction period. The mechanical parameters of surrounding rock of underground powerhouse cavern group were inversely analyzed by using deformation monitoring data, and the numerical simulation results were combined. The deformation law of surrounding rock is analyzed. The results show that the first floor excavation of the main powerhouse passes through the surrounding rock of type 鈪，

本文編號(hào)：2233202