DocumentCode
518459
Title
Notice of Retraction
Numerical simulation of time-varying effect to induction caving roof based on RFPA2D
Author
Wang Guo ; Keping Zhou ; Jianhua Hu ; Hongwei Deng
Author_Institution
Sch. of Resources & Security Eng., Central South Univ., Changsha, China
Volume
1
fYear
2010
fDate
16-18 April 2010
Abstract
Notice of Retraction
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
Based on underground continuous mining technologies, it is one of the developing directions of modern underground metal mines to implement induction roof instability caving, which is used to handle mined-out area. And this mechanical instability process is a typical slow-speed time-varying boundary mechanical problem, of which the main characteristic is dynamic time-varying effect when inducing roof caving. To RFPA software, it´s an effective way to deal with the problem of unit destruction by using the method of weakening unit nature and to simulate the time-varying boundary problem during caving properly and dynamically, obtaining time-varying effect when roof caving is induced. Using the RFPA software taking the T112-T115 mine of 92# orebody in Tongkeng Mine as the research object, the time-varying effect was simulated and analyzed during the induction roof caving. The results are showed as following: (1) The stable exposed area of mined-out area can be up to 4500m2. (2) The roof surrounding rock mass has been avianized seriously after the fourth ore section is stoped, and the caving line height is 48m. Thus the roof caving must be artificially induced after stoping the fourth ore section to make sure safe mining. The safe height of induction caving engineering must be up 50m. The results of time-varying effect show that the surrounding rock mass are avianized by the change of continuous stoping space. It is an effective method to tackle mined-out area by inducing roof instability caving through artificial di- turbance in the partial roof.
After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.
We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.
The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.
Based on underground continuous mining technologies, it is one of the developing directions of modern underground metal mines to implement induction roof instability caving, which is used to handle mined-out area. And this mechanical instability process is a typical slow-speed time-varying boundary mechanical problem, of which the main characteristic is dynamic time-varying effect when inducing roof caving. To RFPA software, it´s an effective way to deal with the problem of unit destruction by using the method of weakening unit nature and to simulate the time-varying boundary problem during caving properly and dynamically, obtaining time-varying effect when roof caving is induced. Using the RFPA software taking the T112-T115 mine of 92# orebody in Tongkeng Mine as the research object, the time-varying effect was simulated and analyzed during the induction roof caving. The results are showed as following: (1) The stable exposed area of mined-out area can be up to 4500m2. (2) The roof surrounding rock mass has been avianized seriously after the fourth ore section is stoped, and the caving line height is 48m. Thus the roof caving must be artificially induced after stoping the fourth ore section to make sure safe mining. The safe height of induction caving engineering must be up 50m. The results of time-varying effect show that the surrounding rock mass are avianized by the change of continuous stoping space. It is an effective method to tackle mined-out area by inducing roof instability caving through artificial di- turbance in the partial roof.
Keywords
mining industry; numerical analysis; structural engineering computing; time-varying systems; RFPA2D software; dynamic time varying effect; induction caving engineering; induction roof instability caving; mechanical instability process; numerical simulation; slow speed time varying boundary mechanical problem; underground continuous mining technologies; underground metal mines; Analytical models; Electronic mail; Humans; Interference; Numerical simulation; Ores; Security; Space technology; Stress; Time varying systems; Inducation caving roof; Mined-out area; RFPA; Time-varying effecting;
fLanguage
English
Publisher
ieee
Conference_Titel
Computer Engineering and Technology (ICCET), 2010 2nd International Conference on
Conference_Location
Chengdu
Print_ISBN
978-1-4244-6347-3
Type
conf
DOI
10.1109/ICCET.2010.5486242
Filename
5486242
Link To Document