典型文献
Stability analysis of surrounding rock mass in underground powerhouse considering damage effect of microfractures
文献摘要：
A high-precision microseismic(MS)monitoring system was built to monitor surrounding rock micro-fractures in the underground powerhouse on the left bank of Shuangjiangkou Hydropower Station.The surrounding rock damage area with spatiotemporal clustering of MS activities was studied for qualitative analysis of the damage mechanism of surrounding rock microfractures,based on the source parameters of MS events.The surrounding rock microfracture scale characterized by the source radius of MS events was considered to establish the constitutive relation.MS information was imported into the model for numerical analysis using fast Lagrangian analysis of continuain 3 dimensions(FLAC3D).The results indicated that the numerical simulation results considering MS damage can better reflect the actual situation of the field.The surrounding rock microfractures mainly showed mixed failure characteristics.Shear failures appeared in localized areas while the fracture scale of sections from K0-33 m to K0-15 m on the vault was large.The deformation increment caused by microfracture damage in the shallow surrounding rock of the top arch accounted for 10％-13％,and the stress decrement in the surrounding rock caused by microfracture damage accounted for about 10％.
文献关键词：
中图分类号：
作者姓名：
Peiwei Xiao;Haoyu Mao;Bo Qian;Biao Li;Xingguo Yang;Nuwen Xu
作者机构：
State Key Laboratory of Hydraulics and Mountain River Engineering,College of Water Resource and Hydropower,Sichuan University,Chengdu,610065,China;Guodian Jinshajiang Xulong Hydropower Development Co.,Ltd,Chengdu,610041,China;School of Geoscience and Technology,Southwest Petroleum University,Chengdu,610500,China
文献出处：
引用格式：
[1]Peiwei Xiao;Haoyu Mao;Bo Qian;Biao Li;Xingguo Yang;Nuwen Xu-.Stability analysis of surrounding rock mass in underground powerhouse considering damage effect of microfractures)[J].岩石力学与岩土工程学报（英文版）,2022(04):1115-1130
A类：
Shuangjiangkou,microfracture,continuain
B类：
Stability,analysis,surrounding,rock,mass,underground,powerhouse,considering,damage,effect,microfractures,high,precision,microseismic,monitoring,system,was,built,left,bank,Hydropower,Station,spatiotemporal,clustering,activities,studied,qualitative,mechanism,source,parameters,events,scale,characterized,by,radius,considered,establish,constitutive,relation,information,imported,into,model,numerical,using,fast,Lagrangian,dimensions,FLAC3D,results,indicated,that,simulation,can,better,reflect,actual,situation,field,mainly,showed,mixed,characteristics,Shear,failures,appeared,localized,areas,while,sections,from,K0,vault,large,deformation,increment,caused,shallow,top,arch,accounted,stress,decrement,about
AB值：
0.505058
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