本文選題：引漢濟(jì)渭工程 + 隧洞施工�。� 參考：《水利水電技術(shù)》2017年08期

【摘要】：基于引漢濟(jì)渭工程隧洞施工實(shí)際,結(jié)合我國現(xiàn)有技術(shù)規(guī)范要求,對(duì)比分析了引漢濟(jì)渭工程隧洞動(dòng)態(tài)設(shè)計(jì)、超前地質(zhì)預(yù)報(bào)、隧洞開挖方式、隧洞支護(hù)時(shí)效及襯砌與掌子面距離等五個(gè)方面的問題,得到了適宜引漢濟(jì)渭工程隧洞施工特點(diǎn)的動(dòng)態(tài)施工技術(shù)方法。針對(duì)不同圍巖條件實(shí)施隧洞動(dòng)態(tài)設(shè)計(jì),采用了不同的開挖和支護(hù)方式。對(duì)物探發(fā)現(xiàn)的異常區(qū)進(jìn)行鉆探驗(yàn)證,以提高地質(zhì)超前預(yù)報(bào)及涌水預(yù)測精度。地質(zhì)復(fù)雜區(qū)段按照"物探先行,鉆探驗(yàn)證,有掘必探,先探后掘"的原則組織施工。在實(shí)際施工中,應(yīng)提倡利用圍巖在無支護(hù)條件下的允許暴露時(shí)間也就是圍巖的自穩(wěn)時(shí)間實(shí)現(xiàn)短距離的掘進(jìn)與支護(hù)分離。對(duì)硬巖(Ⅰ—Ⅲ)圍巖采用"鉆爆設(shè)計(jì)、光爆施工、工序組織、快速施工"的思路,對(duì)軟巖(Ⅳ—Ⅴ)圍巖采用"圍巖量測、確保安全、遵守設(shè)計(jì)、按部就班"的思路。
[Abstract]:Based on the tunnel construction practice of the diversion from Han to Jiwei engineering and the existing technical specifications of our country, this paper compares and analyzes the dynamic design of the tunnel, the advanced geological forecast and the excavation mode of the tunnel in the diversion from Han to Jiwei engineering. In this paper, the dynamic construction technique method suitable for the tunnel construction characteristics of Han Jiwei engineering is obtained from five aspects, such as the time limit of tunnel support and the distance between lining and face. According to different surrounding rock conditions, different excavation and support methods are adopted for dynamic tunnel design. In order to improve the accuracy of geological prediction and water inflow prediction, the abnormal areas discovered by geophysical exploration are drilled and verified. Geological complex section is organized according to the principle of "geophysical exploration first, drilling verification, drilling must be explored, first exploration and then excavation" principle. In actual construction, the allowable exposure time of surrounding rock under the condition of no support should be used to realize short distance excavation and support separation. The idea of "drilling and blasting design, smooth blasting construction, working procedure organization and rapid construction" is adopted for the surrounding rock of hard rock (鈪，

本文編號(hào)：1958356