中南大学学报（自然科学版）2026，Vol.57Issue(4)：1693-1707,15.DOI:10.11817/j.issn.1672-7207.2026.04.019
煤铝协调开采采掘叠加扰动巷道锚注梯级协同支护承载特性
Load-bearing characteristics of tiered bolt-grouting collaborative support in development and extension roadways within coal-bauxite coordinated mining zones
摘要
Abstract
In coal-bauxite coordinated mining areas,the development and extension roadways are subjectd to long-term superimposed disturbances from multiple stress sources associated with roadway excavation,coal extraction,and bauxite mining.Conventional bolt-shotcrete systems are often insufficient to maintain surrounding-rock stability under such compounded disturbance conditions.To ensure long-term stability,an integrated methodology framework combining laboratory rock-mechanics testing,similar-material model test,and in situ stress inversion was implemented.The physico-mechanical properties and in situ stress distribution at the Chejiazhuang Coal Mine were systematically characterized,and the failure-evolution process of the roadway under superimposed excavation-mining disturbances was examined.On this basis,a tiered bolt-grouting collaborative support system was proposed,and its load-bearing behavior was investigated.The results indicate that the proposed system effectively reduces roof stress concentration and establishes a stable load-transfer path along the ribs.Under unsupported conditions,the ultimate bearing capacity of the surrounding rock is 4.93 MPa;with the tiered collaborative support system,it increases to 7.10 MPa.These findings demonstrate a substantive improvement in the load-bearing capacity of roadways subjected to excavation-mining superimposed disturbances and an effective restraint of large-deformation and instability of the surrounding rock.关键词
煤铝协调开采/采掘叠加扰动/锚注梯级协同支护/相似材料模型试验Key words
coordinated mining of coal-bauxite/superimposed excavation-mining disturbances/tiered bolt-grouting collaborative support/similar-material model test分类
矿业与冶金引用本文复制引用
孟庆彬,韩绪,黄炳香,浦海,王锐,安刚健..煤铝协调开采采掘叠加扰动巷道锚注梯级协同支护承载特性[J].中南大学学报（自然科学版）,2026,57(4):1693-1707,15.基金项目
国家重点研发计划项目(2021YFC2902103) （2021YFC2902103）
国家自然科学基金资助项目(52074268,51704280) （52074268,51704280）
中央高校基本科研业务费专项资金资助项目(2025ZDPY03)(Project(2021YFC2902103)supported by the National Key Research and Development Program of China （2025ZDPY03）
Projects(52074268,51704280)supported by the National Natural Science Foundation of China （52074268,51704280）
Project(2025ZDPY03)supported by the Fundamental Research Funds for the Central Universities) （2025ZDPY03）
