摘要
引黄工程南干线 6 #隧洞出口土洞段施工环境差 ,地质条件复杂 ,按水利工程地质分类属Ⅴ类围岩 ,其中Q2 黄土结构疏松、强度低 ,若遇地下水 ,具有复杂的弱湿陷性和可压缩性 ;N2 红粘土随含水量的变化 ,显现出膨胀或失水干缩等不良的工程特征 ,如果处理措施不当 ,就不能避免或减少施工时塌方事故的发生。工程受水文、地质条件的影响很大 ,本文概略阐述了 6 #隧洞土质洞段的施工技术情况 。
There are the complicated geological condition and the poor construction environment at the earth tunnel section of outlet of No.6 Tunnel in the South Main line.In this paper,the geohydrologic condition at outlet of No.6 Tunnel is illustrated,the construction techniques adopted such as excavation,primary support,treatment on seepage flow section and on cave-in section are introduced,and the carrying out of the contract project time is analysed.
出处
《山西水利科技》
2000年第4期33-36,共4页
Shanxi Hydrotechnics
关键词
引黄工程
施工技术
合同工期
输水隧洞
调水工程
Construction Technique Earth Tunnel Contract Project Time Primary Support Excavation
