Influence of Goaf Location on Deformation of High-steep Hard Rock Slope
Underground mining is one of the factors affecting slope deformation,and goaf location affects the degree of such deformation.In this paper,we summarize the structural characteristics of three mining slopes and corresponding goaf location,take the Yongsheng coal mine as the research object,and simul...
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| Language: | zho |
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Editorial Office of Pearl River
2022-01-01
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| Series: | Renmin Zhujiang |
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| Online Access: | http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2022.03.009 |
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| author | JI Lan ZHAO Jianjun WAN Xun LI Qingmiao WU Enge |
| author_facet | JI Lan ZHAO Jianjun WAN Xun LI Qingmiao WU Enge |
| author_sort | JI Lan |
| collection | DOAJ |
| description | Underground mining is one of the factors affecting slope deformation,and goaf location affects the degree of such deformation.In this paper,we summarize the structural characteristics of three mining slopes and corresponding goaf location,take the Yongsheng coal mine as the research object,and simulate the formation of the goaf during two times of mining with Particle Flow Code (PFC<sup>2D</sup>) to study the influence of the distance D (negative toward the inside of the slope) from the right boundary of the goaf to the slope shoulder on the deformation of high-steep hard rock slopes.The following observations can be drawn from the results:The settlement curve of the overburden rock in the goaf assumes an approximate “U” shape.The settlement range first remains unchanged and then expands as D increases.The lateral deformation of the overburden rock towards the free face is more obvious,and the disturbed range of the overburden rock gradually increases; as the second time of mining proceeds,the rock body in the steep cliff area rapidly deforms,and its deformation at D> -50 m is much larger than that at D≤-50 m.This study proposes that subsequent mining of the Yongsheng coal mine should meet D< -50 m.It also provides a reference for the mining interval in the case of such high-steep hard rock slopes. |
| format | Article |
| id | doaj-art-c9733efcb1e242829ffbec182964f9c5 |
| institution | Kabale University |
| issn | 1001-9235 |
| language | zho |
| publishDate | 2022-01-01 |
| publisher | Editorial Office of Pearl River |
| record_format | Article |
| series | Renmin Zhujiang |
| spelling | doaj-art-c9733efcb1e242829ffbec182964f9c52025-01-15T02:27:39ZzhoEditorial Office of Pearl RiverRenmin Zhujiang1001-92352022-01-014347645477Influence of Goaf Location on Deformation of High-steep Hard Rock SlopeJI LanZHAO JianjunWAN XunLI QingmiaoWU EngeUnderground mining is one of the factors affecting slope deformation,and goaf location affects the degree of such deformation.In this paper,we summarize the structural characteristics of three mining slopes and corresponding goaf location,take the Yongsheng coal mine as the research object,and simulate the formation of the goaf during two times of mining with Particle Flow Code (PFC<sup>2D</sup>) to study the influence of the distance D (negative toward the inside of the slope) from the right boundary of the goaf to the slope shoulder on the deformation of high-steep hard rock slopes.The following observations can be drawn from the results:The settlement curve of the overburden rock in the goaf assumes an approximate “U” shape.The settlement range first remains unchanged and then expands as D increases.The lateral deformation of the overburden rock towards the free face is more obvious,and the disturbed range of the overburden rock gradually increases; as the second time of mining proceeds,the rock body in the steep cliff area rapidly deforms,and its deformation at D> -50 m is much larger than that at D≤-50 m.This study proposes that subsequent mining of the Yongsheng coal mine should meet D< -50 m.It also provides a reference for the mining interval in the case of such high-steep hard rock slopes.http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2022.03.009underground mininghigh-steep hard rock slopeParticle Flow Codegoaf location |
| spellingShingle | JI Lan ZHAO Jianjun WAN Xun LI Qingmiao WU Enge Influence of Goaf Location on Deformation of High-steep Hard Rock Slope Renmin Zhujiang underground mining high-steep hard rock slope Particle Flow Code goaf location |
| title | Influence of Goaf Location on Deformation of High-steep Hard Rock Slope |
| title_full | Influence of Goaf Location on Deformation of High-steep Hard Rock Slope |
| title_fullStr | Influence of Goaf Location on Deformation of High-steep Hard Rock Slope |
| title_full_unstemmed | Influence of Goaf Location on Deformation of High-steep Hard Rock Slope |
| title_short | Influence of Goaf Location on Deformation of High-steep Hard Rock Slope |
| title_sort | influence of goaf location on deformation of high steep hard rock slope |
| topic | underground mining high-steep hard rock slope Particle Flow Code goaf location |
| url | http://www.renminzhujiang.cn/thesisDetails#10.3969/j.issn.1001-9235.2022.03.009 |
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