本文選題：巖體質(zhì)量　切入點(diǎn)：快速分級(jí)　出處：《公路工程》2014年01期 　論文類型：期刊論文

【摘要】：以某高速公路大跨徑隧道為研究對(duì)象,在詳細(xì)地質(zhì)調(diào)查基礎(chǔ)上,采用BQ圍巖分級(jí)和CSIR巖體質(zhì)量分類方法,對(duì)該隧道一段圍巖進(jìn)行快速動(dòng)態(tài)分級(jí),結(jié)果表明圍巖質(zhì)量應(yīng)介于Ⅲ級(jí)和Ⅳ級(jí)之間。采用赤平極射投影和實(shí)體比例投影法對(duì)本段隧道穩(wěn)定性進(jìn)行快速圖解分析評(píng)價(jià),結(jié)果顯示,拱頂不穩(wěn)定結(jié)構(gòu)體為斜四面椎體,可能塌落的巖體體積最大為44.4 m3。實(shí)踐證明在隧道施工中采用地質(zhì)分析法對(duì)圍巖質(zhì)量進(jìn)行動(dòng)態(tài)分級(jí)和評(píng)價(jià)簡(jiǎn)便快捷,收效好。
[Abstract]:On the basis of detailed geological investigation, taking the large-span tunnel of a certain expressway as the research object, the rock mass classification of the first section of the tunnel is carried out by using the classification method of Bq surrounding rock mass and CSIR rock mass quality, and the dynamic classification of the first section of the tunnel is carried out. The results show that the mass of surrounding rock should be between grade 鈪，

本文編號(hào)：1639733