A Discussion of Stability and Engineering Verification of Thin Immediate Roof under Uniform Load of the Rectangular Coal Roadway
Roadway roof is a key factor in roadway stability. At present, the analysis of roof stability is mainly based on numerical calculations and field measurements with a relatively weak theoretical basis and inadequate research studies on the loading mechanism of the roof. In this paper, a mechanical ca...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2020-01-01
|
| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/8865388 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1832566448940122112 |
|---|---|
| author | Linsheng Gao Yueping Wang Er-hui Zhang Liang Cheng Rui Peng |
| author_facet | Linsheng Gao Yueping Wang Er-hui Zhang Liang Cheng Rui Peng |
| author_sort | Linsheng Gao |
| collection | DOAJ |
| description | Roadway roof is a key factor in roadway stability. At present, the analysis of roof stability is mainly based on numerical calculations and field measurements with a relatively weak theoretical basis and inadequate research studies on the loading mechanism of the roof. In this paper, a mechanical calculation model of immediate direct roof under uniform load of rectangular coal roadway is established. The stress distribution and roof subsidence in the roof are calculated theoretically and verified by the numerical calculation, physical tests, and engineering applications. Based on the classical beam solution theory, the stress distribution and sinking of the thin immediate roof under uniform load are obtained and verified by numerical calculations. The results are highly consistent. Two types of thin direct roof failure under uniform load are analyzed: the failure of the normal cross section caused by the bottom tensile stress and the failure of the inclined section caused by the combined effect of the tensile stress in the abdominal area and compressive stress. The stability of thin immediate roof under uniform load of the rectangular coal roadway was tested in 1905s mining roadway of Great Wall Number #3 coal excavation field. This research can further fill in blanks of the loading mechanism of the roadway roof and provide theoretical and pragmatic values to control the roadway pressure and rock stratum as well as the scientific references to the design of the anchor bolt supporting system. |
| format | Article |
| id | doaj-art-f4c4443468dd4c749aa58fc676c4d7ea |
| institution | Kabale University |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-f4c4443468dd4c749aa58fc676c4d7ea2025-02-03T01:04:09ZengWileyAdvances in Civil Engineering1687-80861687-80942020-01-01202010.1155/2020/88653888865388A Discussion of Stability and Engineering Verification of Thin Immediate Roof under Uniform Load of the Rectangular Coal RoadwayLinsheng Gao0Yueping Wang1Er-hui Zhang2Liang Cheng3Rui Peng4School of Mineral Engineering, Xi’an University of Science and Technology, Xi’an, Shanxi 710054, ChinaSchool of Safety Engineering, North China Institute of Science and Technology, Beijing 101601, ChinaSchool of Safety Engineering, North China Institute of Science and Technology, Beijing 101601, ChinaZhongshan Haofa Real Estate Development Co., Ltd., Zhongshan, Guangzhou 528400, ChinaSchool of Safety Engineering, North China Institute of Science and Technology, Beijing 101601, ChinaRoadway roof is a key factor in roadway stability. At present, the analysis of roof stability is mainly based on numerical calculations and field measurements with a relatively weak theoretical basis and inadequate research studies on the loading mechanism of the roof. In this paper, a mechanical calculation model of immediate direct roof under uniform load of rectangular coal roadway is established. The stress distribution and roof subsidence in the roof are calculated theoretically and verified by the numerical calculation, physical tests, and engineering applications. Based on the classical beam solution theory, the stress distribution and sinking of the thin immediate roof under uniform load are obtained and verified by numerical calculations. The results are highly consistent. Two types of thin direct roof failure under uniform load are analyzed: the failure of the normal cross section caused by the bottom tensile stress and the failure of the inclined section caused by the combined effect of the tensile stress in the abdominal area and compressive stress. The stability of thin immediate roof under uniform load of the rectangular coal roadway was tested in 1905s mining roadway of Great Wall Number #3 coal excavation field. This research can further fill in blanks of the loading mechanism of the roadway roof and provide theoretical and pragmatic values to control the roadway pressure and rock stratum as well as the scientific references to the design of the anchor bolt supporting system.http://dx.doi.org/10.1155/2020/8865388 |
| spellingShingle | Linsheng Gao Yueping Wang Er-hui Zhang Liang Cheng Rui Peng A Discussion of Stability and Engineering Verification of Thin Immediate Roof under Uniform Load of the Rectangular Coal Roadway Advances in Civil Engineering |
| title | A Discussion of Stability and Engineering Verification of Thin Immediate Roof under Uniform Load of the Rectangular Coal Roadway |
| title_full | A Discussion of Stability and Engineering Verification of Thin Immediate Roof under Uniform Load of the Rectangular Coal Roadway |
| title_fullStr | A Discussion of Stability and Engineering Verification of Thin Immediate Roof under Uniform Load of the Rectangular Coal Roadway |
| title_full_unstemmed | A Discussion of Stability and Engineering Verification of Thin Immediate Roof under Uniform Load of the Rectangular Coal Roadway |
| title_short | A Discussion of Stability and Engineering Verification of Thin Immediate Roof under Uniform Load of the Rectangular Coal Roadway |
| title_sort | discussion of stability and engineering verification of thin immediate roof under uniform load of the rectangular coal roadway |
| url | http://dx.doi.org/10.1155/2020/8865388 |
| work_keys_str_mv | AT linshenggao adiscussionofstabilityandengineeringverificationofthinimmediateroofunderuniformloadoftherectangularcoalroadway AT yuepingwang adiscussionofstabilityandengineeringverificationofthinimmediateroofunderuniformloadoftherectangularcoalroadway AT erhuizhang adiscussionofstabilityandengineeringverificationofthinimmediateroofunderuniformloadoftherectangularcoalroadway AT liangcheng adiscussionofstabilityandengineeringverificationofthinimmediateroofunderuniformloadoftherectangularcoalroadway AT ruipeng adiscussionofstabilityandengineeringverificationofthinimmediateroofunderuniformloadoftherectangularcoalroadway AT linshenggao discussionofstabilityandengineeringverificationofthinimmediateroofunderuniformloadoftherectangularcoalroadway AT yuepingwang discussionofstabilityandengineeringverificationofthinimmediateroofunderuniformloadoftherectangularcoalroadway AT erhuizhang discussionofstabilityandengineeringverificationofthinimmediateroofunderuniformloadoftherectangularcoalroadway AT liangcheng discussionofstabilityandengineeringverificationofthinimmediateroofunderuniformloadoftherectangularcoalroadway AT ruipeng discussionofstabilityandengineeringverificationofthinimmediateroofunderuniformloadoftherectangularcoalroadway |