基于参数敏感分析的软弱破碎地层大断面隧道爆破质量优化  

Quality Optimization of Blasting in Soft Fractured Rock Mass on Large Cross-Section Tunnel Based on Analysis of Parameter Sensitivity

作　　者：邹宝平[1,2] 罗战友[2] 杨建辉[2] 刘艳仓 Zou Baoping;Luo Zhanyou;Yang Jianhui;Liu Yancang(State Key Laboratory for Geomechanics and Deep Underground Engineering,China University of Mining and Technology (Beijing),Beijing 100083,China;School of Civil Engineering and Architecture,Zhejiang University of Science and Technology,Hangzhou 310023,China;The 4th Engineering Co., Ltd. of China Railway Tunnel Group,Nanning 530007,China)

机构地区：[1]中国矿业大学(北京)深部岩土力学与地下工程国家重点实验室,北京100083 [2]浙江科技学院土木与建筑工程学院,杭州310023 [3]中铁隧道集团四处有限公司,南宁530007

出　　处：《科技通报》2017年第2期143-147,共5页Bulletin of Science and Technology

基　　金：教育部新世纪人才计划项目资助(No.NCET-11-1080);国家自然科学基金资助项目(No.41602308;No41572299;No.41172292;No.41172292);浙江省新世纪151人才第一层次(No.12-1-076);浙江省自然科学基金资助(No.LZ13D020001;No.LQ13D020001);浙江省公益技术应用研究计划(No.2016C33033);浙江科技学院科研基金(No.F703104D01;No.F702104E03)

摘　　要：受软弱破碎地层控制的大断面隧道爆破质量较难保证,如何针对既有的隧道爆破方案以最可靠的结论优化解决现场试验中爆破质量较难保证的难题亟待开展。本文结合改建贵昆铁路某隧道工程,对隧道爆破既有设计方案及其在开挖中存在的问题进行分析,并基于选取的隧道爆破质量敏感因素,建立了隧道爆破质量综合评价数学模型,采用极差分析法,对影响隧道爆破质量敏感因素的敏感程度进行分析并对隧道爆破方案进行优化设计,揭示了对隧道爆破质量具有显著敏感性的主要敏感因素。结果表明,提出的基于爆破质量敏感因素的敏感程度分析对软弱破碎地层隧道爆破质量进行优化设计的方法具有可操作性和实用性,能显著改善隧道爆破的质量。It is difficult to warrant the blasting quality of large cross-section tunnel under the control of soft fractured rock mass. How to resolve the problem of poor quality of blasting test on the base of existing blasting solutions is an urgent need. This paper combined reconstructed Guiyang- Kunming railway tunnel, analyzed the existing blasting solutions and the construction problems, established the quality comprehensive evaluation model of tunnel based on the selected sensitivity factors, studied the sensitivity of blasting quality influence factors by range analysis, designed the tunnel blasting scheme,and revealed the main sensitivity factors. The results showed that the quality optimization of blasting in soft fractured rock mass based on the parameter sensitivity analysis introduced in this thesis is easy to adopt and operate, thus it can improve the quality of blasting.

关 键 词：隧道 爆破质量 敏感分析 软弱破碎地层 优化设计 

分 类 号：TU17[建筑科学—建筑理论]