采矿与岩层控制工程学报2026，Vol.8Issue(2)：147-165,19.DOI:10.13532/j.jmsce.cn10-1638/td.2025-1346
含冰裂隙砂岩力学行为及D-P强度准则修正
Mechanical behavior of ice-filled fractured sandstone and modified D-P strength criterion
摘要
Abstract
In cold-region rock engineering,ice-filled fractures significantly weaken the mechanical properties of rock masses,which severely impacts the safety and stability of projects.To investigate the mechanical behavior and failure mechanisms of ice-filled fractured rock masses,uniaxial compression tests,acoustic emission monitoring,and discrete element numerical simulations were conducted in this study.On this basis,the mechanical properties and failure mechanisms of ice-filled fractured sandstone were systematically examined,with a focus on how fracture thickness(5-30 mm)and dip angle(0°-90°)influenced rock mass strength,elastic modulus,energy evolution,and crack propagation.The results show that compressive strength,elastic modulus,and pre-and post-peak energy all decrease non-linearly with the increase in fracture thickness,among which the elastic modulus drops by 20％-34％.The fracture dip angle was found to dominate the classification of failure modes.Vertical fractures(90°)exhibit the highest strength(23.56 MPa)due to efficient stress transfer,while low-angle fractures(15°-30°)experience a 30％-45％reduction in strength due to interface shear effects.Three failure modes were identified:ice layer crushing(α≤ 15°),interface slip(15°-75°),and rock main fracture(α≥75°).A micro-parameter system for the ice-rock composite medium was developed based on the PFC discrete element model,achieving over 90％agreement between simulation results and experimental data.By considering the coupling effects of fracture thickness and dip angle,the D-P strength criterion was modified,and the theoretical values deviate from experimental data by less than±5％These findings provide theoretical support for the stability evaluation and disaster prevention in cold-region rock engineering and lay the groundwork for studying ice-rock interaction mechanisms in complex freeze-thaw environments.关键词
含冰裂隙砂岩/力学行为/破坏模式/裂隙厚度/裂隙倾角/强度准则Key words
ice-filled fractured sandstone/mechanical behavior/failure mode/fracture thickness/fracture dip angle/strength criterion分类
矿业与冶金引用本文复制引用
陈光波,徐泽瑞,李谭,张俊文,王二雨,王创业,刘业娇,张国华..含冰裂隙砂岩力学行为及D-P强度准则修正[J].采矿与岩层控制工程学报,2026,8(2):147-165,19.基金项目
国家自然科学基金资助项目(52304142,52064042,52464014,52464019) （52304142,52064042,52464014,52464019）
内蒙古自然科学基金资助项目(2025YQ011,2022MS05037) （2025YQ011,2022MS05037）
内蒙古自治区直属高校基本科研业务费资助项目(2023QNJS108,2024YXXS002,2023QNJS089,2024RCTD015) （2023QNJS108,2024YXXS002,2023QNJS089,2024RCTD015）
内蒙古自治区高等学校青年科技英才支持计划资助项目(NJYT22073) （NJYT22073）
