Thermo-mechanical coupling numerical simulation method under high temperature heterogeneous rock and application in underground coal gasification
The heterogeneity of a rock mass under high temperature and its thermo-mechanical coupling characteristics are difficult problems to investigate. This situation brings considerable difficulties to the study of underground coal gasification under thermo-mechanical coupling. The development of a numer...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
SAGE Publishing
2020-07-01
|
| Series: | Energy Exploration & Exploitation |
| Online Access: | https://doi.org/10.1177/0144598719888981 |
| _version_ | 1819205769193586688 |
|---|---|
| author | Xiaopeng Liu Guangli Guo Huaizhan Li |
| author_facet | Xiaopeng Liu Guangli Guo Huaizhan Li |
| author_sort | Xiaopeng Liu |
| collection | DOAJ |
| description | The heterogeneity of a rock mass under high temperature and its thermo-mechanical coupling characteristics are difficult problems to investigate. This situation brings considerable difficulties to the study of underground coal gasification under thermo-mechanical coupling. The development of a numerical simulation method for the thermo-mechanical coupling of heterogeneity rock mass under high-temperature burnt conditions can provide an important foundation for related research. On the basis of the variation of mechanical properties of rock mass with temperature, a thermo-mechanical coupling simulation method, which considers the heterogeneity of a rock mass under high temperature, is proposed in this study. A test block experiment is implemented and then applied to the strata movement and failure of underground coal gasification. The results are as follows: (1) The proposed method can truly reflect the heterogeneity of a rock mass under high-temperature environment, providing an effective method for the numerical simulation of geotechnical engineering in high-temperature conditions. (2) The variation of mechanical properties of rock mass after an increase in temperature is the main reason for the change law of strata movement and failure of underground coal gasification. These factors should be considered in the investigation of underground gasification strata movement and failure. The present study can provide an important means for the research on geotechnical engineering in high-temperature environments. |
| first_indexed | 2024-12-23T04:56:58Z |
| format | Article |
| id | doaj.art-df4638e706b44e6ca200349105711050 |
| institution | Directory Open Access Journal |
| issn | 0144-5987 2048-4054 |
| language | English |
| last_indexed | 2024-12-23T04:56:58Z |
| publishDate | 2020-07-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Energy Exploration & Exploitation |
| spelling | doaj.art-df4638e706b44e6ca2003491057110502022-12-21T17:59:20ZengSAGE PublishingEnergy Exploration & Exploitation0144-59872048-40542020-07-013810.1177/0144598719888981Thermo-mechanical coupling numerical simulation method under high temperature heterogeneous rock and application in underground coal gasificationXiaopeng Liu0Guangli Guo1Huaizhan Li2 School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, China School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, China School of Environment Science and Spatial Informatics, China University of Mining and Technology, Xuzhou, ChinaThe heterogeneity of a rock mass under high temperature and its thermo-mechanical coupling characteristics are difficult problems to investigate. This situation brings considerable difficulties to the study of underground coal gasification under thermo-mechanical coupling. The development of a numerical simulation method for the thermo-mechanical coupling of heterogeneity rock mass under high-temperature burnt conditions can provide an important foundation for related research. On the basis of the variation of mechanical properties of rock mass with temperature, a thermo-mechanical coupling simulation method, which considers the heterogeneity of a rock mass under high temperature, is proposed in this study. A test block experiment is implemented and then applied to the strata movement and failure of underground coal gasification. The results are as follows: (1) The proposed method can truly reflect the heterogeneity of a rock mass under high-temperature environment, providing an effective method for the numerical simulation of geotechnical engineering in high-temperature conditions. (2) The variation of mechanical properties of rock mass after an increase in temperature is the main reason for the change law of strata movement and failure of underground coal gasification. These factors should be considered in the investigation of underground gasification strata movement and failure. The present study can provide an important means for the research on geotechnical engineering in high-temperature environments.https://doi.org/10.1177/0144598719888981 |
| spellingShingle | Xiaopeng Liu Guangli Guo Huaizhan Li Thermo-mechanical coupling numerical simulation method under high temperature heterogeneous rock and application in underground coal gasification Energy Exploration & Exploitation |
| title | Thermo-mechanical coupling numerical simulation method under high temperature heterogeneous rock and application in underground coal gasification |
| title_full | Thermo-mechanical coupling numerical simulation method under high temperature heterogeneous rock and application in underground coal gasification |
| title_fullStr | Thermo-mechanical coupling numerical simulation method under high temperature heterogeneous rock and application in underground coal gasification |
| title_full_unstemmed | Thermo-mechanical coupling numerical simulation method under high temperature heterogeneous rock and application in underground coal gasification |
| title_short | Thermo-mechanical coupling numerical simulation method under high temperature heterogeneous rock and application in underground coal gasification |
| title_sort | thermo mechanical coupling numerical simulation method under high temperature heterogeneous rock and application in underground coal gasification |
| url | https://doi.org/10.1177/0144598719888981 |
| work_keys_str_mv | AT xiaopengliu thermomechanicalcouplingnumericalsimulationmethodunderhightemperatureheterogeneousrockandapplicationinundergroundcoalgasification AT guangliguo thermomechanicalcouplingnumericalsimulationmethodunderhightemperatureheterogeneousrockandapplicationinundergroundcoalgasification AT huaizhanli thermomechanicalcouplingnumericalsimulationmethodunderhightemperatureheterogeneousrockandapplicationinundergroundcoalgasification |