Optimization of the shotcrete spraying process in blast-based tunnel construction: Insights for enhancing spraying quality

IF 9.6 1区工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY

Automation in Construction Pub Date : 2025-04-30 DOI:10.1016/j.autcon.2025.106234

Fenghua Liu , Jiajing Liu , Botao Zhong , Jun Sun

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引用次数: 0

Abstract

Shotcrete is important to form the primary lining of blast-based tunnel construction, but this process heavily relies on operator expertise. Therefore, this research investigates the following research question: How to effectively model and optimize the shotcrete spraying process to construct high-quality primary linings? This paper proposes a spraying process optimization method, comprising three key components: (1) a spraying trajectories parameterization model; (2) a dynamic spraying deposition model; and (3) a spraying process parameter optimization algorithm. Validation through a railway tunnel case study demonstrates the method's effectiveness, yielding optimal spraying parameters with a mean absolute error of 0.6 cm against a target thickness of 19.4 cm. These findings provide actionable solutions for the spraying process, and reduce reliance on expertise. Future research directions can focus on integrating advanced material characterization into the spraying deposition model and developing intelligent sprayers for precise spraying parameter implementation

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爆破隧道施工喷射混凝土喷淋工艺优化：提高喷淋质量的启示

喷射混凝土对于爆破隧道施工的主衬砌至关重要，但这一过程严重依赖于操作人员的专业知识。因此，本研究探讨了以下研究问题：如何有效地模拟和优化喷射混凝土喷涂过程，以施工高质量的初级衬砌？本文提出了一种喷涂过程优化方法，该方法由三个关键部分组成：(1)喷涂轨迹参数化模型；(2)动态喷涂沉积模型；(3)一种喷涂工艺参数优化算法。通过铁路隧道实例研究验证了该方法的有效性，在19.4 cm的目标厚度下，获得了平均绝对误差为0.6 cm的最佳喷涂参数。这些发现为喷涂过程提供了可行的解决方案，并减少了对专业知识的依赖。未来的研究方向可以集中在将先进的材料表征整合到喷涂沉积模型中，开发智能喷雾器以实现精确的喷涂参数

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Automation in Construction 工程技术-工程：土木

CiteScore

19.20

自引率

16.50%

发文量

563

审稿时长

8.5 months

期刊介绍： Automation in Construction is an international journal that focuses on publishing original research papers related to the use of Information Technologies in various aspects of the construction industry. The journal covers topics such as design, engineering, construction technologies, and the maintenance and management of constructed facilities. The scope of Automation in Construction is extensive and covers all stages of the construction life cycle. This includes initial planning and design, construction of the facility, operation and maintenance, as well as the eventual dismantling and recycling of buildings and engineering structures.