Study on Plastic Zone Distribution Characteristic of Coal and Rock Mass in Excavation from Crosscut Coal
Coal and gas outburst is a serious disaster in the mining, and crosscut coal is the most prone to cause the coal and gas outburst. In order to study the mechanism of outburst, this paper studied the stress distribution characteristics in front of the working face in the process of rock roadway drivi...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Geofluids |
| Online Access: | http://dx.doi.org/10.1155/2020/6610399 |
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| _version_ | 1832558411218157568 |
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| author | Chengwu Li Xiaoqian Zhang Chengmin Wei Yao Nie |
| author_facet | Chengwu Li Xiaoqian Zhang Chengmin Wei Yao Nie |
| author_sort | Chengwu Li |
| collection | DOAJ |
| description | Coal and gas outburst is a serious disaster in the mining, and crosscut coal is the most prone to cause the coal and gas outburst. In order to study the mechanism of outburst, this paper studied the stress distribution characteristics in front of the working face in the process of rock roadway driving before implementing crosscut coal firstly. On this basis, the hypothesis of stress distribution on the “strong and soft face” of coal-rock mass was proposed. And by using the hypothesis, the mechanical equation for the parameter changes of the plastic zone in front of the working face in crosscut coal was established, and the width and morphological characteristics of the plastic zone in crosscut coal were analyzed. The results show that during the process, as the working face moves forward, the shape distribution of the plastic zone in front of the working face changes from the “semielliptical” to “semibutterfly,” And based on the distribution characteristics of plastic zone in working face in crosscut coal, modification proposals for outburst-prevention measures were proposed and provided technical support for the outburst-prevention measures and key parameters setting to prevent the coal outburst in crosscut coal. |
| format | Article |
| id | doaj-art-c21a1a0ffd704ab4b424e0b1ad29cdb4 |
| institution | Kabale University |
| issn | 1468-8115 1468-8123 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geofluids |
| spelling | doaj-art-c21a1a0ffd704ab4b424e0b1ad29cdb42025-02-03T01:32:24ZengWileyGeofluids1468-81151468-81232020-01-01202010.1155/2020/66103996610399Study on Plastic Zone Distribution Characteristic of Coal and Rock Mass in Excavation from Crosscut CoalChengwu Li0Xiaoqian Zhang1Chengmin Wei2Yao Nie3School of Emergency Management and Safety Engineering, China University of Mining and Technology (Beijing), Beijing 100083, ChinaSchool of Emergency Management and Safety Engineering, China University of Mining and Technology (Beijing), Beijing 100083, ChinaSchool of Emergency Management and Safety Engineering, China University of Mining and Technology (Beijing), Beijing 100083, ChinaSchool of Emergency Management and Safety Engineering, China University of Mining and Technology (Beijing), Beijing 100083, ChinaCoal and gas outburst is a serious disaster in the mining, and crosscut coal is the most prone to cause the coal and gas outburst. In order to study the mechanism of outburst, this paper studied the stress distribution characteristics in front of the working face in the process of rock roadway driving before implementing crosscut coal firstly. On this basis, the hypothesis of stress distribution on the “strong and soft face” of coal-rock mass was proposed. And by using the hypothesis, the mechanical equation for the parameter changes of the plastic zone in front of the working face in crosscut coal was established, and the width and morphological characteristics of the plastic zone in crosscut coal were analyzed. The results show that during the process, as the working face moves forward, the shape distribution of the plastic zone in front of the working face changes from the “semielliptical” to “semibutterfly,” And based on the distribution characteristics of plastic zone in working face in crosscut coal, modification proposals for outburst-prevention measures were proposed and provided technical support for the outburst-prevention measures and key parameters setting to prevent the coal outburst in crosscut coal.http://dx.doi.org/10.1155/2020/6610399 |
| spellingShingle | Chengwu Li Xiaoqian Zhang Chengmin Wei Yao Nie Study on Plastic Zone Distribution Characteristic of Coal and Rock Mass in Excavation from Crosscut Coal Geofluids |
| title | Study on Plastic Zone Distribution Characteristic of Coal and Rock Mass in Excavation from Crosscut Coal |
| title_full | Study on Plastic Zone Distribution Characteristic of Coal and Rock Mass in Excavation from Crosscut Coal |
| title_fullStr | Study on Plastic Zone Distribution Characteristic of Coal and Rock Mass in Excavation from Crosscut Coal |
| title_full_unstemmed | Study on Plastic Zone Distribution Characteristic of Coal and Rock Mass in Excavation from Crosscut Coal |
| title_short | Study on Plastic Zone Distribution Characteristic of Coal and Rock Mass in Excavation from Crosscut Coal |
| title_sort | study on plastic zone distribution characteristic of coal and rock mass in excavation from crosscut coal |
| url | http://dx.doi.org/10.1155/2020/6610399 |
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