典型文献
Effect of CO2 on coal P-wave velocity under triaxial stress
文献摘要：
As P-wave velocity is sensitive to the variations in coal reservoir parameters,it is possible to monitor the injected CO2 through P-wave velocity during CO2 sequestration in coal.However,the effects of CO2 on the coal P-wave velocity under triaxial stress are not clearly discerned.In the present study,different bound-ary conditions and gases were utilised to investigate the factors affecting the P-wave velocity after the interaction of coal with CO2.Experiments with helium indicated that the pore pressure primarily affected the P-wave velocity by altering the effective stress.Experiments with CH4 and CO2 indicated that matrix swelling induced-cleats porosity decline significantly promoted P-wave velocity.Moreover,CO2 caused a wider scale and severe weakening of coal matrix than CH4,thereby significantly decreasing the P-wave velocity,and the decline in P-wave velocity increases with vitrinite content.Furthermore,experiments under different boundary conditions showed that with the boundary condition having more constraints,the decrement of pore pressure on P-wave velocity is more weaken,whereas the improvement of matrix swelling on P-wave velocity is more evident.This study contributes to understanding the mechanism of effect of CO2 on P-wave velocity under triaxial stress condition and provides guidance for monitoring CO2 sequestration in coal.
文献关键词：
中图分类号：
作者姓名：
Shuangjiang Zhu;Jianhong Kang;Youpai Wang;Fubao Zhou
作者机构：
Jiangsu Key Laboratory of Fire Safety in Urban Underground Space,China University of Mining and Technology,Xuzhou 221116,China;School of Safety Engineering,China University of Mining and Technology,Xuzhou 221116,China;State Key Laboratory of Coal Resources and Safe Mining,China University of Mining and Technology,Xuzhou 221116,China
文献出处：
引用格式：
[1]Shuangjiang Zhu;Jianhong Kang;Youpai Wang;Fubao Zhou-.Effect of CO2 on coal P-wave velocity under triaxial stress)[J].矿业科学技术学报（英文版）,2022(01):17-26
A类：
cleats
B类：
Effect,coal,wave,velocity,triaxial,stress,sensitive,variations,reservoir,parameters,possible,injected,through,during,sequestration,However,effects,are,not,clearly,discerned,In,present,study,different,conditions,gases,were,utilised,investigate,factors,affecting,after,interaction,Experiments,helium,indicated,that,pore,pressure,primarily,affected,altering,effective,CH4,matrix,swelling,induced,porosity,decline,significantly,promoted,Moreover,caused,wider,scale,severe,weakening,than,thereby,decreasing,increases,vitrinite,content,Furthermore,experiments,boundary,showed,having,constraints,decrement,whereas,improvement,evident,This,contributes,understanding,mechanism,provides,guidance,monitoring
AB值：
0.459046
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