Exploited the forecast system of mining damages, which uses the theory of clean-production in coal-areas as guide. Its aims is developing and using coal resource reasonably and reducing the damage to the environment.
Investigating the combined effects of mining damage and creep damage on slope stability is crucial,as it can comprehensively reveal the non-linear deformation characteristics of rock under their joint influence.This s...Investigating the combined effects of mining damage and creep damage on slope stability is crucial,as it can comprehensively reveal the non-linear deformation characteristics of rock under their joint influence.This study develops a fractional-order nonlinear creep constitutive model that incorporates the double damage effect and implements a non-linear creep subroutine for soft rock using the threedimensional finite difference method on the FLAC3D platform.Comparative analysis of the theoretical,numerical,and experimental results reveals that the fractional-order constitutive model,which incorporates the double damage effect,accurately reflects the distinct deformation stages of green mudstone during creep failure and effectively captures the non-linear deformation in the accelerated creep phase.The numerical results show a fitting accuracy exceeding 97%with the creep test curves,significantly outperforming the 61%accuracy of traditional creep models.展开更多
In order to master the research status,hotspots and trends of mining surface deformation(MSD)in metal mines,exploring the green and sustainable development path of mines,2241 articles in the Web of Science database in...In order to master the research status,hotspots and trends of mining surface deformation(MSD)in metal mines,exploring the green and sustainable development path of mines,2241 articles in the Web of Science database in recent 30 years were visually analyzed with"metal mine"and"surface deformation"as search keywords.Draw the knowledge map of authors and hot keywords,and discuss the research progress and prospect of MSD based on the environmental impact.The results show that MSD research has experienced three stages:slow start,steady development and rapid development.MSD research involves the whole life cycle of mine mining damage source control,process monitoring and later restoration.MSD research keywords can be divided into five main clusters,among which subsidence prediction,backfilling mining,fracture failure,Geo-mechanical modeling and backfill materials are representative research hotspots.With the progress of the times,MSD research presents the evo-lution characteristics of iterative replacement,from shallow to deep,and subject integration.Furthermore,it puts forward three frontier research directions for the future:MSD intelligent early warning,mine intelligent backfilling-mining integration,mine ecological restoration and environmental governance throughout the whole life cycle.展开更多
文摘Exploited the forecast system of mining damages, which uses the theory of clean-production in coal-areas as guide. Its aims is developing and using coal resource reasonably and reducing the damage to the environment.
基金support from the National Natural Science Foundation of China(No.52308316)the Scientific Research Foundation of Weifang University(Grant No.2024BS42)+2 种基金China Postdoctoral Science Foundation(No.2022M721885)the Key Laboratory of Rock Mechanics and Geohazards of Zhejiang Province(No.ZJRMG-2022-01)supported by Open Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics,Chinese Academy of Sciences(NO.SKLGME023017).
文摘Investigating the combined effects of mining damage and creep damage on slope stability is crucial,as it can comprehensively reveal the non-linear deformation characteristics of rock under their joint influence.This study develops a fractional-order nonlinear creep constitutive model that incorporates the double damage effect and implements a non-linear creep subroutine for soft rock using the threedimensional finite difference method on the FLAC3D platform.Comparative analysis of the theoretical,numerical,and experimental results reveals that the fractional-order constitutive model,which incorporates the double damage effect,accurately reflects the distinct deformation stages of green mudstone during creep failure and effectively captures the non-linear deformation in the accelerated creep phase.The numerical results show a fitting accuracy exceeding 97%with the creep test curves,significantly outperforming the 61%accuracy of traditional creep models.
基金supported by the Guizhou Provincial Science and Technology Department Innovation Talent Team Construction Project(Qiankehe talent CXTD[2025]025)Qiankehe Platform Talents(GCC[2023]056)+4 种基金Guizhou Provincial Basic Research Program(Natural Sci-ence)(Qianke He Foundation-ZK[2024]Key 022)Guizhou Provincial Department of Education 2023 Annual College Science and Technology Innovation Team(Guizhou Education Technology[2023]055)Project of Cultivation for young top-motch Talents of Beijing Municipal In-stitutions(BPHR202203036)Guizhou Science and Technology Plan Project(Qianke Science Support[2023]General 122)Yuxiu Inno-vation Project of NCUT(2024NCUTYXCX209).
文摘In order to master the research status,hotspots and trends of mining surface deformation(MSD)in metal mines,exploring the green and sustainable development path of mines,2241 articles in the Web of Science database in recent 30 years were visually analyzed with"metal mine"and"surface deformation"as search keywords.Draw the knowledge map of authors and hot keywords,and discuss the research progress and prospect of MSD based on the environmental impact.The results show that MSD research has experienced three stages:slow start,steady development and rapid development.MSD research involves the whole life cycle of mine mining damage source control,process monitoring and later restoration.MSD research keywords can be divided into five main clusters,among which subsidence prediction,backfilling mining,fracture failure,Geo-mechanical modeling and backfill materials are representative research hotspots.With the progress of the times,MSD research presents the evo-lution characteristics of iterative replacement,from shallow to deep,and subject integration.Furthermore,it puts forward three frontier research directions for the future:MSD intelligent early warning,mine intelligent backfilling-mining integration,mine ecological restoration and environmental governance throughout the whole life cycle.
