| 基于碳排放评价的超小净距隧道绿色施工优化研究 |
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| 引用本文： | 陈鑫磊,张学民,陈进,胡涛,万正,龙立敦,杨峰. 基于碳排放评价的超小净距隧道绿色施工优化研究[J]. 中国公路学报, 2022, 35(1): 59-70. DOI: 10.19721/j.cnki.1001-7372.2022.01.006 |
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| 作者姓名： | 陈鑫磊 张学民 陈进 胡涛 万正 龙立敦 杨峰 |
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| 作者单位： | 1. 中南大学土木工程学院, 湖南 长沙 410075;2. 贵州省公路工程集团有限公司, 贵州 贵阳 550008 |
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| 基金项目： | 国家自然科学基金项目（51978671）；贵州省交通运输厅科技项目（2020-123-015）；中南大学研究生自主探索创新项目（2020zzts155） |
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| 摘 要： | 为推进生态文明社会建设发展,倡导绿色低碳施工理念,以碳排放评价作为切入点,开展了超小净距隧道绿色施工优化研究.依托贵州旧屋基原连拱隧道段工程,基于隧道施工碳排放模型,归纳了影响隧道施工碳排放量的直接影响因素和间接影响因素.综合分析认为,造成隧道施工碳排放量产生的主要因素为施工过程中的机械运作以及建筑材料生产,因此从缩短...
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| 关 键 词： | 隧道工程 绿色施工技术 碳排放系数法 超小净距隧道 |
| 收稿时间： | 2021-05-10 |
Green Construction Optimization of Ultrasmall Clearance Tunnel Based on Carbon Emission Evaluation |
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| CHEN Xin-lei,ZHANG Xue-min,CHEN Jin,HU Tao,WAN Zheng,LONG Li-dun,YANG Feng. Green Construction Optimization of Ultrasmall Clearance Tunnel Based on Carbon Emission Evaluation[J]. China Journal of Highway and Transport, 2022, 35(1): 59-70. DOI: 10.19721/j.cnki.1001-7372.2022.01.006 |
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| Authors: | CHEN Xin-lei ZHANG Xue-min CHEN Jin HU Tao WAN Zheng LONG Li-dun YANG Feng |
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| Affiliation: | 1. School of Civil Engineering, Central South University, Changsha 410075, Hunan, China;2. Guizhou Provincial Highway Engineering Group Co. Ltd., Guiyang 550008, Guizhou, China |
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| Abstract: | A carbon emission evaluation method was used in this study to investigate the optimization of ultrasmall clear-distance tunnel construction to promote the development of an ecologically civilized society and advocate the green and low-carbon concept. The original continuous arch tunnel section project of the Jiuwuji tunnel in Guizhou Province was studied. Based on the model of tunnel construction carbon emission, the direct and indirect factors influencing the carbon emissions of tunnel construction were summarized. From a comprehensive analysis, the main factors causing carbon emissions of tunnel construction are the mechanical operation and production of construction materials during construction. Thus, it was feasible to optimize the green and low-carbon construction from two technical paths:shortening the construction period and optimizing the structural form. Next, an optimization plan for the separated ultrasmall clearance tunnel was proposed, and the original central diaphragm excavation method was adjusted to the method of "first cave step method + back cave overrun small guide cave." Numerical simulations were performed to analyze the safety of the tunnel using different reinforcement techniques of the rock column, and the reinforcement scheme, "hollow grouting anchor reinforcement + triangular small conduit grouting reinforcement," was adopted. Based on the monitoring data of the field test section, the construction period of the optimized plan decreases by 15 days compared with that of the original plan. The maximum values of the arch settlement and convergence deformation are 13.5 and 9.53 mm, respectively, and the minimum value of the initial support safety factor is 2.13, which satisfies the safety requirements of the support structure. Based on the carbon emission coefficient method, the carbon emissions of the construction scheme before and after optimization were compared and analyzed. The results show that the total carbon emissions of the optimized scheme decrease by 25.43% compared with those of the original scheme, among which the carbon emissions are most evidently reduced by saving raw materials, which decreases by 30.14%. The findings are significant for optimizing energy savings and emission reduction for similar ultrasmall clearance tunnel construction. |
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| Keywords: | tunnel engineering green construction technology carbon emission evaluation method ultra-small clearance tunnel |
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