潘明亮,段宝福.大断面隧道光面爆破技术的改进与应用[J].有色金属(矿山部分),2011,63(2):69-72.
大断面隧道光面爆破技术的改进与应用
Improvement and application of smooth blasting construction technology in Large Cross-section Tunnel
  
DOI:10.3969/j.issn.1671-4172.2011.02.018
中文关键词:  大断面  隧道  光面爆破  爆破效果
英文关键词:large cross-section  tunnel  smooth blasting  blasting effect
基金项目:
     
作者单位
潘明亮 中铁隧道集团有限公司,河南 洛阳,471000
段宝福 山东科技大学山东省土木工程防灾减灾重点实验室,山东 青岛 266510
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中文摘要:
      新大瑶山隧道是我国铁路客运专线建设中最长的超大断面隧道,穿越地层复杂,施工要求高,设计时速高达350 km/h。为保证工期要求和施工质量,在围岩较好地段采用了全断面光面爆破快速施工技术。结合围岩类型和生产情况,在不影响正常生产的条件下进行了一定数量的现场试验,对大瑶山隧道开挖的爆破参数、装药结构和起爆网路进行了详细的分析与设计;对钻爆施工和管理,提出了合理的质量保障和安全措施。通过采用PVC半管连续不耦合装药结构,达到了降低爆破成本、提高爆破效果的目的。
英文摘要:
      The new Dayaoshan tunnel is the longest ultra-large cross-section tunnel in our country’s railway passenger transportation special line construction. It passes through complex stratum and has high construction requests. Its design speed reaches as high as 350 km/h. In order to guarantee the tine limit for the project and the construction quality, the rapid construction technology by whole section smooth blasting in a better adjacent formation land sector is used. Combing rock types and construction condition, a certain number of field tests without affecting the normal construction are carried out. The demolition parameter, power-charging structure and the initiation network of the Dayaoshan tunnel excavation are detailedly analyzed and designed. The reasonable quality safeguard and safety measures on drilling and blasting construction and management are put forward. Through using of PVC half-tube continuously non-coupling charging structure, the purpose of reducing the excavation cost and enhancing the blasting effect has achieved.
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