Technique for protection of new shafts over 1 000 m deep with small sized safe pillar and anti deformation technique
To solve the problem of huge coal protective pillar induced by new shaft in deep depth areathe methods for the design of smallsized safety pillars were proposed based on the result of field experimentnumerical simulation calculation and theoretical study.The safe pillars were so designed
as to be able to effectively reduce the deformation of the shafts and ensure the stability and symmetry of pillars.Force and deformation law of new shaft protected by smallsized safe pillar was analyzed by numerical simulationsome problems needing attention in the shaft protection were proposed.A
systematic study was made on the techniques for increasing the shafts’ deformationresistant capability through making overall planning and using rigid and flexible structural measures to effectively absorb and resist the movement and deformation of strata.As evidenced by practical result
for the protection of a pair of new antideformation downcast and upcast shafts at the No.4 Coal Mine under Pingdingshan Tian’an Coal Mining Co.Ltd.the design of the safe pillars and the antideformation techniques adopted for protection of the 2 shafts have achieved remarkable technoeconomical
effects.
Keywords: antideformation technique; force analysis; new shaft; small safe coal pillar
Document Type: Research Article
Publication date: 15 September 2012
- The Journal publishes the peer-reviewed papers with original research, new developments and innovations, site measurements and case studies in coal science and mining industry. It aims to be a leading platform for the publication of high quality papers and an authoritative source of information for analysis, review and evaluation related to coal science and mining technologies.
The Journal covers the following areas:
- coalfield geology and exploration
- coal resources/reserves estimation
- mine planning and design, mine optimization
- mine construction and development, mine operation
- mine electrical and equipment, mine automation
- mine health and safety
- ventilation and control, methane drainage and capture
- coal processing and utilization
- low carbon technology
- coal economics, mine management
- coal mine environmental impact assessment and control
- mine rehabilitation, mine closure, etc.
The Journal is a unique comprehensive academic periodical completely dedicated to the coal science and mining industry in the world. The Journal stands out as an excellent source of scientific information in coal industry with nearly 400 papers published in 12 issues per annum.
The Journal is published monthly by China Coal Society. - Editorial Board
- Information for Authors
- Submit a Paper
- Ingenta Connect is not responsible for the content or availability of external websites
Receive new issue alert- Access Key
- Free content
- Partial Free content
- New content
- Open access content
- Partial Open access content
- Subscribed content
- Partial Subscribed content
- Free trial content