本文選題：公路隧道 + 六盤山隧道�。� 參考：《隧道建設(shè)》2015年12期

【摘要】：常規(guī)的隧道反坡排水方案都是基于設(shè)計涌水量制定的,往往由于對涌水量判斷不準確而導致排水能力不足或過剩,造成涌水災害或資源配置浪費。為此,在"提前整體配置,過程局部優(yōu)化"設(shè)計理念的基礎(chǔ)上,提出基于涌水量預估和動態(tài)監(jiān)測的隧道長距離反坡排水技術(shù)。該技術(shù)采用瞬變電磁、激發(fā)極化超前探測技術(shù),對掌子面前方含水區(qū)位置及水量進行較準確的定位和預估;提出成本最小化排水優(yōu)化公式,優(yōu)化泵站分級設(shè)計及水泵功率選擇;同時,動態(tài)監(jiān)測涌水量,根據(jù)監(jiān)測結(jié)果進行排水設(shè)置,提出了增級截流集水坑技術(shù),有效解決2級泵站之間的排水問題。在寧夏東毛高速公路六盤山隧道中對該技術(shù)進行了應(yīng)用,通過對反坡排水方案的優(yōu)化,較好地完成了反坡排水任務(wù),節(jié)約了排水成本,保證了隧道施工安全,取得了良好的應(yīng)用效果。
[Abstract]:The conventional reverse slope drainage schemes of tunnels are based on the design of water inflow, which often leads to insufficient or excess drainage capacity due to inaccurate judgment of water inflow, resulting in water gushing disaster or waste of resources allocation. Therefore, based on the design idea of "overall disposition ahead of time, local optimization of process", a long distance reverse slope drainage technique based on water inflow estimation and dynamic monitoring is proposed. The technology uses transient electromagnetic and induced polarization advance detection technology to locate and estimate accurately the position and quantity of water in the water-bearing area in front of the face of the palm, and puts forward the optimization formula of cost minimization drainage, the optimization of pump station classification design and the selection of pump power. At the same time, dynamic monitoring of the inflow of water, according to the monitoring results of drainage settings, proposed an increase in the closure of water catchment technology, to effectively solve the drainage problem between two stage pumping stations. The technology has been applied in Liupanshan Tunnel of Dongmao Expressway in Ningxia. By optimizing the anti-slope drainage scheme, the task of anti-slope drainage has been completed, the drainage cost has been saved, and the tunnel construction safety has been ensured. Good results have been obtained.
【作者單位】： 中鐵十四局集團第五工程有限公司;
【分類號】：U456.3;U455.4

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本文編號：2041670