Cun ZhangQingsheng BaiPenghua HanLei WangXiaojie WangFangtian Wang
School of Energy and Mining Engineering, China University of Mining and Technology (Beijing)Institute of Geotechnics, TU Bergakademie FreibergSchool of Mines, China University of Mining and Technology
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 studying 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.
Water–rock interactionWeakening mechanismWater contentImmersion timeWetting–drying cyclesMicroscopic methods
主办单位:煤炭科学研究总院有限公司 中国煤炭学会学术期刊工作委员会