【摘要】：以分析深埋長(zhǎng)隧洞圍巖應(yīng)力和應(yīng)變?yōu)槟繕?biāo),考慮隧洞施工方式,圍巖支護(hù)形式等因素,通過(guò)數(shù)值計(jì)算,動(dòng)態(tài)模擬隧洞施工過(guò)程,獲取了黃三段輸水隧洞初期支護(hù)后的圍巖變形情況以及圍巖與襯砌相互作用關(guān)系。計(jì)算結(jié)果顯示:采用設(shè)計(jì)的初期支護(hù)形式,可有效控制不良洞段的圍巖變形,Ⅳ、Ⅴ類(lèi)圍巖最大收斂變形滿足規(guī)范設(shè)計(jì)要求。Ⅳ、Ⅴ類(lèi)圍巖與襯砌間的相互作用力隨襯砌澆筑時(shí)距掌子面距離的增加而降低,但在距掌子面約4倍洞徑后降幅微小。通過(guò)對(duì)比分析經(jīng)驗(yàn)方法與數(shù)值方法所確定圍巖壓力成果,確定了襯砌結(jié)構(gòu)設(shè)計(jì)所需的圍巖壓力指標(biāo),為黃三段輸水隧洞設(shè)計(jì)提供了依據(jù),分析方法可為相似工程提供參考。
[Abstract]:In order to analyze the stress and strain of surrounding rock in deep buried long tunnel, considering the factors such as tunnel construction mode, surrounding rock supporting form and so on, the construction process of tunnel is simulated dynamically by numerical calculation. The deformation of surrounding rock and the interaction between surrounding rock and lining are obtained. The results show that the initial support can effectively control the deformation of the surrounding rock in the bad tunnel section, and the maximum convergent deformation of the surrounding rock of class 鈪，

本文編號(hào)：2184688