Catastrophe Instability Mechanism of the Pillar-Roof System in Gypsum Mines Due to the Influence of Relative Humidity
文献类型：期刊论文
| 作者 | Xia, Kaizong; Chen, Congxin; Zhou, Yichao; Liu, Xiumin; Zheng, Yun; Pan, Yucong |
| 刊名 | INTERNATIONAL JOURNAL OF GEOMECHANICS
 |
| 出版日期 | 2019 |
| 卷号 | 19期号:4页码:- |
| 关键词 | Gypsum mine Catastrophe model Relative humidity Pillar Roof bed |
| ISSN号 | 1532-3641 |
| DOI | 10.1061/(ASCE)GM.1943-5622.0001378 |
| 英文摘要 | In this study, a simplified mechanical model is proposed based on the failure characteristics of a gypsum pillar-roof system obtained through in situ investigation. Then, a cusp catastrophe model for the gypsum pillar-roof system is established based on the given stress-strain relations of the gypsum rock. Using this model, the instability mechanism for the gypsum pillar-roof system is investigated. The results of the analysis indicate that the stress-strain relation of gypsum rock derived from damage mechanics theory can accurately describe its strain-softening behavior after the peak stress and that increases in the relative humidity around a pillar or both a pillar and the roof bed can increase the stiffness ratio of the support system and consequently result in a more stable support system. However, if the relative humidity around the roof bed increases, the stiffness ratio of the system decreases, increasing the possibility of catastrophic failure of the support system. The case study revealed that the influence of the relative humidity on the support system is significant, higher relative humidity in the mine's atmosphere increases the probability of instability in the support system, and the influence of the relative humidity change around the pillar on system stability is greater than that around the roof bed. (c) 2019 American Society of Civil Engineers. |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000468544600004 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/15002]  |
| 专题 | 岩土力学所知识全产出_期刊论文 国家重点实验室知识产出_期刊论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 3.Changsha Univ Sci & Technol, Sch Civil Engn, Changsha 410076, Hunan, Peoples R China; 4.Wuhan Univ, Sch Civil Engn, Key Lab Safety Geotech & Struct Engn Hubei Prov, Wuhan 430072, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xia, Kaizong,Chen, Congxin,Zhou, Yichao,et al. Catastrophe Instability Mechanism of the Pillar-Roof System in Gypsum Mines Due to the Influence of Relative Humidity[J]. INTERNATIONAL JOURNAL OF GEOMECHANICS,2019,19(4):-. |
| APA | Xia, Kaizong,Chen, Congxin,Zhou, Yichao,Liu, Xiumin,Zheng, Yun,&Pan, Yucong.(2019).Catastrophe Instability Mechanism of the Pillar-Roof System in Gypsum Mines Due to the Influence of Relative Humidity.INTERNATIONAL JOURNAL OF GEOMECHANICS,19(4),-. |
| MLA | Xia, Kaizong,et al."Catastrophe Instability Mechanism of the Pillar-Roof System in Gypsum Mines Due to the Influence of Relative Humidity".INTERNATIONAL JOURNAL OF GEOMECHANICS 19.4(2019):-. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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