本文選題：巖石地鐵工程 + 巖質(zhì)圍巖　； 參考：《現(xiàn)代隧道技術(shù)》2016年03期

【摘要】：在國標《工程巖體分級標準》的巖體質(zhì)量分級基礎(chǔ)上,文章運用圖解法量化對比圍巖分級方法,并結(jié)合地鐵工程特點提出了反映工程跨度影響的巖石地鐵工程圍巖分級方法,包括:改進與調(diào)整現(xiàn)有圍巖分級中圍巖定性特征分級,同時改進各級圍巖基本質(zhì)量指標BQ值,使定性分級和定量分級協(xié)調(diào)一致;依據(jù)巖體質(zhì)量和工程跨度分級的思想,給出區(qū)間隧道與車站隧道的亞級分級及其相應(yīng)的BQ值,量化巖石地鐵工程圍巖自穩(wěn)能力。通過對重慶軌道交通1#、6#線的圍巖物理力學參數(shù)和圍巖分級的調(diào)研,在同樣保證安全的前提下,與國標相比,采用本文提出的巖石地鐵工程圍巖分級方法,區(qū)間隧道砂質(zhì)泥巖有1/3的Ⅳ級圍巖可以提升為Ⅲ級圍巖;車站隧道砂巖約有80%的Ⅳ級圍巖可以提升為Ⅲ級圍巖。
[Abstract]:On the basis of the rock mass quality classification of the national standard "Engineering Rock Mass Classification Standard", this paper uses the graphic method to quantitatively contrast the surrounding rock classification method, and puts forward a rock mass classification method reflecting the influence of the engineering span on the surrounding rock mass classification method of the underground engineering combined with the characteristics of the subway engineering. It includes: improving and adjusting the qualitative characteristic classification of surrounding rock in the existing surrounding rock classification, improving the basic quality index of surrounding rock at all levels at the same time, making the qualitative classification and quantitative classification consistent, according to the idea of rock mass quality and engineering span classification, The subgrade classification of interval tunnel and station tunnel and the corresponding Bq value are given to quantify the self-stability of surrounding rock in rock subway engineering. Based on the investigation of the physical and mechanical parameters of surrounding rock and the classification of surrounding rock of Chongqing Rail Transit Line 1 #y6 #, and on the premise of the same safety, compared with the national standard, the method of surrounding rock classification proposed in this paper for rock subway engineering is adopted. About 1 / 3 of the fourth grade surrounding rock of the sandy mudstone in the interval tunnel can be upgraded to the 鈪，

本文編號：1846547