Strength weakening and its micromechanism in water-rock interaction,a short review in laboratory tests
Cun Zhang1
Qingsheng Bai2
Penghua Han1
Lei Wang1
Xiaojie Wang1
Fangtian Wang3
1.School of Energy and Mining Engineering,China University of Mining and Technology(Beijing),Beijing 100083,China2.Institute of Geotechnics,TU Bergakademie Freiberg,Gustav-Zeuner-Stra?e 1,09599 Freiberg,Germany3.School of Mines,China University of Mining and Technology,Xuzhou 221116,China
摘要：Water-rock interaction(WRI)is a topic of interest in geology and geotechnical engineering.Many geological hazards and engineering safety problems are severe under the WRI.This study focuses on the water weakening of rock strength and its influencing factors(water content,immersion time,and wetting-drying cycles).The strength of the rock mass decreases to varying degrees with water content,immersion time,and wetting-drying cycles depending on the rock mass type and mineral composition.The corresponding acoustic emission count and intensity and infrared radiation intensity also weaken accordingly.WRI enhances the plasticity of rock mass and reduces its brittleness.Various microscopic methods for study-ing the pore characterization and weakening mechanism of the WRI were compared and analyzed.Various methods should be adopted to study the pore evolution of WRI comprehensively.Microscopic methods are used to study the weakening mechanism of WRI.In future work,the mechanical parameters of rocks weakened under long-term water immersion(over years)should be considered,and more attention should be paid to how the laboratory scale is applied to the engineering scale.
机标关键词：interactionreviewlaboratorymicromechanismshortstrengthtestswater-rock
论文发表日期：2023-02-28
在线出版日期：2025-08-15（本平台首次上网日期，不代表文献的发表时间）
页数：15( 18-32 )
英文信息