文献类型：期刊文献

英文题名：Simulation and field application study of roadway remodeling load-bearing arch technology

作者：Xu, Youlin Chen, Zhisong Wu, Shaokang Zhang, Jitao Wu, Xukun Li, Bin

第一作者：徐佑林

通信作者：Chen, ZS[1]

机构：[1]Guizhou Inst Technol, Sch Min Engn, Guiyang 550003, Guizhou, Peoples R China;[2]Guizhou Univ, Sch Min, Guiyang 550025, Guizhou, Peoples R China;[3]China Univ Min & Technol Beijing, Sch Energy & Min Engn, Beijing 100083, Peoples R China;[4]Guizhou Qianchenglijin Technol Co Ltd, Guiyang 550081, Guizhou, Peoples R China;[5]Hunan Univ Sci & Technol, Sch Resource & Environm & Safety Engn, Xiangtan 411201, Peoples R China;[6]Anhui Univ Sci & Technol, Sch Min Engn, Huainan 232001, Anhui, Peoples R China

第一机构：贵州理工学院矿业工程学院

通信机构：corresponding author), Guizhou Univ, Sch Min, Guiyang 550025, Guizhou, Peoples R China.

年份：2024

卷号：68

外文期刊名：STRUCTURES

收录：;EI(收录号：20243616973739);Scopus(收录号：2-s2.0-85202559063);WOS:【SCI-EXPANDED(收录号:WOS:001312866900001)】；

语种：英文

外文关键词：Reconstructed load-bearing arch; Fractured surrounding rock; Flac3D; Plastic zone expansion; Overall support

摘要：This paper presents a numerical simulation study on the impact of material strength, thickness, and lateral pressure coefficient on the load-bearing arches used in tunnel reconstruction, as well as industrial experiments based on these arches. The study compares three different cross-sectional shapes-straight-wall semicircular arches, flat-bottom straight-wall semicircular arches, and inverted straight-wall semicircular arches-through multi-dimensional numerical simulations investigating various parameters such as material strength, thickness, and lateral pressure coefficient. We analyze the maximum load-bearing capacity of the reconstructed arches and the evolution characteristics of the plastic zones in the tunnel support structures with different cross-sectional shapes. The results indicate that among the factors affecting the ultimate load-bearing capacity of the arches, the ranking is as follows: tensile strength > thickness > lateral pressure coefficient. Additionally, the shape of the cross-section significantly influences the evolution of plastic zones during tunnel failure. The technology of reconstructing load-bearing structures in coal mine tunnels effectively addresses the deformation issues caused by the superimposition of multiple stresses in the tunnels of Daniu Coal Mine. This provides valuable insights for understanding and managing significant deformations resulting from concentrated stresses from in-situ rock, tectonic forces, and mining-induced stresses.