长距离输水隧洞进度补短板措施与技术创新

作者:赖勇 杜强强 郑刚
单位:浙江省水利水电勘测设计院 杭州市千岛湖原水股份有限公司
摘要:根据千岛湖配水工程各工作面的实施进度,在隧洞开挖期间,从设计技术角度出发、分阶段提出进度补短板技术措施,包括增设施工支洞、扩大底部洞径、调整支洞轴线、渐变段采用钢衬、调整相邻工作面长度、优化常规支护、加大单循环进尺、采用凿岩台车施工等,部分措施在工程中得到良好应用。衬砌阶段创新采用诱导缝技术,实施过程表明,进度补短板优化常规支护加大单循环进尺效果较好,而设置衬砌诱导缝效果极为显著。
关键词:水利工程隧洞钢衬诱导缝支护
作者简介:赖勇,教授级高级工程师,E-mail:aquanebula@163.com。
基金:浙江省水利厅科技计划:杭州市第二水源千岛湖配水工程关键技术研究(RA1503)。 -页码-:102-105
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Measures and Technical Innovation to Improve Weak Links in the Progress of Long Distance Water Conveyance Tunnel
LAI Yong DU Qiangqiang ZHENG Gang
(Zhejiang Investigation and Design Institute of Water Resources and Electric Power Hangzhou Qiandao Lake Raw Water Co.,Ltd.)
Abstract: According to the implementation progress of each working face of Qiandao Lake water distribution project,from the perspective of design technology,the technical measures was proposed to make up for the progress in stages,which including adding construction adit,increasing the width of the tunnel bottom,adjusting the axis of adit,using steel lining in transition section,adjusting the length of adjacent working face,optimizing conventional support and increasing single cycle footage,using drilling jumbo for construction,some measures have been applied in the project. In the lining stage,the technology of setting induced joint is innovatively adopted. The implementation process shows that the effect of optimizing conventional support and increasing single cycle footage with schedule reinforcement plate is better,while the effect of setting guide joint is extremely significant.
Keywords: water engineering; tunnels; steel lining; induced joint; supports
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