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隧道建设(中英文) ›› 2012, Vol. 32 ›› Issue (6): 887-891.DOI: 10.3973/j.issn.1672-741X.2012.06.024

• 施工技术 • 上一篇    下一篇

九瑞高速岩质隧道钻爆法施工超欠挖控制措施及成本分析

冯海暴1,2, 蒋万德1, 曲俐俐1, 郭庆杰3   

  1. (1.中交一航局第二工程有限公司, 山东青岛 266071; 2.山东大学, 济南 250101; 3.中交第一航局总承包工程分公司, 天津 300461)
  • 收稿日期:2012-07-16 修回日期:2012-08-03 出版日期:2012-12-20 发布日期:2012-12-28
  • 作者简介:冯海暴(1980—),男,河北邯郸人,山东大学软件工程及力学计算专业在读硕士,工程师,从事地下工程、力学计算及港口技术研究工作。

Overbreak/shortbreak Control Technology for and Cost Analysis on Rock Tunnels Constructed by Drilling and Blasting Method: Case Study on Tunnels on JiujiangRuichang Highway

FENG Haibao1,2, JIANG Wande1, QU Lili1, GUO Qingjie3   

  1. (1. The Second Engineering Co., Ltd., of CCCC First Harbor Engineering Co., Ltd., Qingdao 266071, Shandong, China; 2. Shandong University, Jinan 250101, China;3. General Contract Branch of CCCC First Harbor Engineering Co., Ltd., Tianjin 300461, China)
  • Received:2012-07-16 Revised:2012-08-03 Online:2012-12-20 Published:2012-12-28

摘要: 为了降低岩溶地质隧道钻爆法施工超欠挖耗费,提高隧道一次性开挖合格率,对目前隧道超欠挖现状进行研究,分析影响隧道超欠挖的因素,介绍超欠挖对工程造价的影响情况。根据实际调查和现场试验,找出了影响超欠挖和造价耗费的主要因素,并制定了有效的控制措施。采用改进后的方案进行隧道开挖施工后,隧道一次性开挖平均合格率由674%上升到了839%,经济效益提高了499%,证明采取的处理措施是成功的,可为以后类似工程提供借鉴。

关键词: 九瑞高速, 岩质隧道, 钻爆法, 超欠挖, 控制措施, 成本

Abstract: The stateofart of overbreak/shortbreak in tunneling is presented, the causes for overbreak/shortbreak are analyzed, and the influences of overbreak/shortbreak on the tunneling cost are described, so as to reduce the cost induced by overbreak/shortbreak of rock tunnels constructed by drilling and blasting method and to improve the qualification rate of tunnel excavation. Effective overbreak/shortbreak control technologies are determined on basis of investigations and trials. After these technologies are applied, the average qualification rate in tunnel excavation has been raised from 67.4% to 83.9%, and the economic efficiency has been improved by 49.9%, which demonstrates that the technologies applied are effective. The paper can provide reference for similar projects in the future.

Key words: JiujiangRuichang highway, rock tunnel, drilling and blasting method, overbreak/shortbreak, control technology, cost