黑龙江科技大学学报2025，Vol.35Issue(6)：869-874,6.DOI:10.3969/j.issn.2095-7262.2025.06.001
红庆梁矿软岩底板密封材料的抗压性能
Compressive performance of sealing material for soft rock floor in Hongqingliang Mine
摘要
Abstract
This paper aims to accurately obtain the mechanical properties and failure characteristics of the three axis sealing materials.The study involves establishing a 3D microscopic discrete element model with the PFC3D-based simulation software and"ball+cluster"approach under various confining pressures to conduct the triaxial compression test characteristics.The results indicate that the compressive strength and ductility of the material increase with the increase of confining pressures.The simulated peak stress is 3.66%higher than that obtained from laboratory tests and the confining pressure has the quad-ratic relationship with both the peak stress and elastic modulus,showing the more compressive strength and ductility under the higher confining pressure.Based on the forward crack slices,the increase of con-fining pressure has the rock failure mode shift from simple stretch mode to complex shear-dominated crack network.The study provides theoretical insights for predicting failure and optimizing the design of the sealing materials under complex stress conditions.关键词
软岩巷道/离散元/底板密封层/柔性簇Key words
soft rock roadway/discrete element method/floor sealing layer/cluster分类
矿业与冶金引用本文复制引用
Liu Yongli,Tao Lei,Ni Yaozu..红庆梁矿软岩底板密封材料的抗压性能[J].黑龙江科技大学学报,2025,35(6):869-874,6.基金项目
黑龙江省省属高等学校基本科研业务费项目(2024-KYYWF-1106) （2024-KYYWF-1106）
黑龙江省"揭榜挂帅"科技攻关项目(2021ZXJ02A03) （2021ZXJ02A03）
