文献类型：期刊文献

英文题名：Analysis and control of self stable balance circle of surrounding rock of roadway in inclined coal seam

作者：Xiong, Xianyu[1,2];Ouyang, Yibo[3];Dai, Jun[4];Ling, Zhang[5]

第一作者：Xiong, Xianyu

通讯作者：Xiong, XY[1]

机构：[1]Henan Univ Econ & Law, Sch Engn Management & Real Estate, Zhengzhou 450000, Henan, Peoples R China;[2]Henan Univ, Sch Comp & Informat Engn, Zhengzhou 450046, Henan, Peoples R China;[3]Xian Univ Sci & Technol, Sch Energy Sci & Engn, Xian 710054, Shaanxi, Peoples R China;[4]Xian Univ Sci & Technol, Sch Architecture & Civil Engn, Xian 710054, Shaanxi, Peoples R China;[5]Henan Prov Acad Bldg Res & Engn Testing Co Ltd, Zhengzhou 450053, Henan, Peoples R China

第一机构：河南财经政法大学工程管理与房地产学院

通讯机构：[1]corresponding author), Henan Univ Econ & Law, Sch Engn Management & Real Estate, Zhengzhou 450000, Henan, Peoples R China.|[1048420]河南财经政法大学工程管理与房地产学院;[10484]河南财经政法大学;

年份：2023

卷号：124

起止页码：749-767

外文期刊名：APPLIED MATHEMATICAL MODELLING

收录：;EI(收录号：20233614665739);Scopus(收录号：2-s2.0-85169295945);WOS:【SCI-EXPANDED(收录号:WOS:001066912500001)】；

基金：This study was financially supported by the National Natural Science Foundation of China (51174159 and 59974019).

语种：英文

外文关键词：Inclined coal seam; Roadway surrounding rock; Self stable balance circle; Mechanical model; Support technology

摘要：The asymmetric deformation of surrounding rock in inclined coal seam roadway is serious, and its stability is difficult to control. Based on the PU's arch theory and considering the development process of the progressive formation of the self stable balance circle (SSBC), this paper establishes a mechanical model of the SSBC for the right-angle trapezoidal roadway in the inclined coal seam. The mechanical analysis and morphological characterization of the forming process were carried out, and the numerical simulation and physical similarity simulation test were carried out to verify. On this basis, the stability control method of roadway in inclined coal seam is improved, and the asymmetric support scheme of roadway is optimized, which is verified by numerical simulation and field monitoring. The results show that the roadway surrounding rock forms a quasi elliptical SSBC after self stabilization, and the mechanical formula of the shape of the SSBC is derived and characterized. Through numerical simulation and physical similarity simulation experiments, the dynamic evolution process of SSBC is depicted, and the gradual forming evolution characteristics of SSBC are revealed. With the increase of the deformation of the surrounding rock, the effective height and width of the roadway gradually increase, and finally a quasi elliptical SSBC deflecting to the left side of the roadway is formed. Based on this, the asymmetric support principle that can control the stability of surrounding rock by improving the asymmetric stress concentration is proposed, and the asymmetric support scheme is designed, that is, "the anchor bolts (cables) are arranged to the right sidewall, and the sidewall angle weakening area is intensively supported". Through numerical simulation and field monitoring, the support effect is remarkable.