NDLI: Development an instability model for bord-and-pillar goaf using elastic foundation plate theory

Content Provider	IEEE Xplore Digital Library
Author	Liu Cong-liang Tan Zhi-xiang Deng Ka-zhong Li Pei-xian
Copyright Year	2011
Description	Author affiliation: Key Laboratory for Land Environment and Disaster Monitoring of SBSM & Jiangsu Key Laboratory of Resources and Environmental Information Engineering, China University of Mining and Technology, Xuzhou, China (Liu Cong-liang; Tan Zhi-xiang; Deng Ka-zhong; Li Pei-xian)
Abstract	Bord-and-pillar mining has been widely used in northwestern China, and lots of remains of coal resources such as coal pillars, roof coal, bound coal and so on, is a significant waste. Furthermore, the accidents caused by the instability of bord-and-pillar goaf are commonly faced problems. These accidents may have detrimental effects on mining areas residents in the form of injury, disability or fatality as well as mining company due to downtimes, interruptions in the mining operations, destruction of land resources, environmental pollution and so on. Therefore, studying on instability mechanism of bord-and-pillar goaf for the assessment and management of ground collapse accidents and pillars recovery is essential. In this paper, the instability mechanism of bord-and-pillar goaf was analyzed based on mining geological and mechanical conditions. Aiming at hard roof goaf, a detailed analysis was developed, in which the pillars were equivalent to continuous elastic Foundation, the roof was equivalent to the elastic foundation plate, a mechanical model of foundation plate on elastic foundation is established, the synergetic instability process of coal pillar-and-roof system was studied, in addition, the mechanical conditions and math criterion of roof failure and the overall instability of coal pillar-and-roof system was given. The results show that bord-and-pillar goaf failure is a pillar-and-roof synergetic instability process, whit pillars' effective area reducing, the roof will fail gradually, this will strengthen the pressure on pillars and accelerate pillars yield, if the effective area lower than its critical value, the goaf will collapse suddenly.
Starting Page	1304
Ending Page	1308
File Size	1154080
Page Count	5
File Format	PDF
ISBN	9781612847498
e-ISBN	9781612847528
DOI	10.1109/ICMREE.2011.5930575
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-05-20
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Economics Manifolds Synergetic instability Geology Bord-and-pillar goaf Instability mechanism Coal pillars recovery Coal Coal resources waste Hard roof
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Critique of the South African squat coal pillar strength formula

Determination of fracture location of double-sided directional fracturing pressure relief for hard roof of large upper goaf-side coal pillars

Logistic Regression Model for Prediction of Roof Fall Risks in Bord and Pillar Workings in Coal Mines: An Approach

Physical Characteristics of Section Coal and Rock Pillars Under Roof Shock Disturbances From Goaf

Study of strip-filling for old room and pillar mining goaf

An approach for design of coal pillars in partial extraction coal mining panels with a consideration of roof-pillar-floor interaction

Research on cemented artificial pillars to replace protective inter-block coal pillars and stope failure laws

Research on the Influence of Slurry Filling on the Stability of Floor Coal Pillars during Mining above the Room-and-Pillar Goaf: A Case Study

Effect of roof movement on gas flow in an extremely thick coal seam under fully mechanized sublevel caving mining conditions

Development an instability model for bord-and-pillar goaf using elastic foundation plate theory

Similar Documents

Critique of the South African squat coal pillar strength formula

Determination of fracture location of double-sided directional fracturing pressure relief for hard roof of large upper goaf-side coal pillars

Logistic Regression Model for Prediction of Roof Fall Risks in Bord and Pillar Workings in Coal Mines: An Approach

Physical Characteristics of Section Coal and Rock Pillars Under Roof Shock Disturbances From Goaf

Study of strip-filling for old room and pillar mining goaf

An approach for design of coal pillars in partial extraction coal mining panels with a consideration of roof-pillar-floor interaction

Research on cemented artificial pillars to replace protective inter-block coal pillars and stope failure laws

Research on the Influence of Slurry Filling on the Stability of Floor Coal Pillars during Mining above the Room-and-Pillar Goaf: A Case Study

Effect of roof movement on gas flow in an extremely thick coal seam under fully mechanized sublevel caving mining conditions

Development an instability model for bord-and-pillar goaf using elastic foundation plate theory