Characteristic of mining stress evolution and activation of the reverse fault below the hard-thick strata
There will be changes in roof movement and mining stress after overlying hard-thick strata cut by reverse fault.By using three-dimensional numerical calculation method,this paper analyzed the characteristics of mining stress evolution,roof movement and fault activation rule,and also used the engineering example to verify it.Study results show that under the effect of reverse fault cutting,the surrounding rock of hanging wall working face appears as inverted wedge,the mining stress transfers to deep below the floor and high above the roof,and the surrounding rock stress concentration is greater than that at lower face.Compared with the hanging wall working face,the mining stress of footwall working face is greatly influenced by the distance between working face and fault.The magmata rock and its lower strata form the structure similar to ‘leverage’,which causes the subsidence and rebound of coal seam roof.The possibility of immediate roof fault zone activation of reverse fault at footwall working face is greater than that at hanging wall working face,while the possibility of the high position magmata fault zone activation is less than that at footwall working face.The fault starts the activation when the distance between footwall working face and reverse fault is 40 m.When the distance between hanging wall working face and reverse fault is 40m,the immediate roof fault zone start activation,while the high magmata rock fault zone starts activation when the distance is 30 m.
No References for this article.
No Supplementary Data.
No Article Media
Document Type: Research Article
Publication date: February 15, 2015
More about this publication?
- 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