中南大学学报（自然科学版）2017，Vol.48Issue(2)：457-464,8.DOI:10.11817/j.issn.1672-7207.2017.02.025
深埋高侧压巷道底鼓机理分析及控制
Mechanism and control of floor heave of deep buried roadway with high lateral pressure coefficient
摘要
Abstract
Based on the theoretical analysis, numerical simulation, mechanical calculation and field investigation, the numerical simulation of the floor heave of the roadway with different lateral pressure coefficients was completed, the deformation law of the roadway with a high lateral pressure coefficient was discussed, the analysis of the floor-transverse supporting's interaction mechanism was finished, the calculation of the model conversion was completed and the scheme of the controlling the floor heave with transverse supporting was verified. The results show that: with a high lateral pressure coefficient, the high horizontal stress near the sides of floor extrudes the floor to display flexure deformation toward the free-surface of the floor, and the process of the floor heave is divided into four stages: accelerated deformation, uniform-speed deformation, slowdown deformation and ultimate stability. As the lateral pressure coefficient increases, the phenomena of the floor heave become more serious. When 0.5<λ<1.5, the phenomena are serious obviously; whileλ>2.0, the speed of the variation slows down, but the phenomena still increases. Because of the effect of transverse bracing the sides of the floor, the supporting reduces the tendency of high horizontal stress near the floor's sides extruding the floor from sides to central, and the supporting can provide enough supporting force to resist the deformation of the floor. Forming on the layout of steel beams along with roadway, the combination-control system of multi-beams overlaps the control range of single beam, resulting in raising the bending strength of the whole floor.关键词
采矿工程/侧压系数/巷道底鼓/底鼓控制Key words
mining engineering/lateral pressure coefficient/floor heave of roadway/control of floor heave分类
矿业与冶金引用本文复制引用
曹平,李好月,钟涌芳,王飞..深埋高侧压巷道底鼓机理分析及控制[J].中南大学学报（自然科学版）,2017,48(2):457-464,8.基金项目
国家自然科学基金资助项目(51274249) （51274249）
教育部博士点基金资助项目(20120162110009)(Project(51274249) supported by the National Natural Science Foundation of China （20120162110009）
Project(20120162110009) supported by Specialized Research Fund for the Doctoral Program of Higher Education) （20120162110009）
