Thermo-mechanical coupling numerical simulation method under high temperature heterogeneous rock and application in underground coal gasification
Thermo-mechanical coupling numerical simulation method under high temperature heterogeneous rock and application in underground coal gasification
复制标题
高温非均质岩石热力耦合数值模拟方法及其在煤炭地下气化中的应用
DOI：
10.1177/0144598719888981
复制
发表时间：
2020-01
影响因子：
2.7
通讯作者：
Huaizhan Li
中科院分区：
文献类型：
--
作者：
Xiaopeng Liu;Guangli Guo;Huaizhan Li
高温岩体的非均匀性及其热-力耦合特性是研究的难点。这给热力耦合条件下煤炭地下气化的研究带来了相当大的困难。非均质岩体在高温烧蚀条件下热力耦合数值模拟方法的建立，可为相关研究提供重要基础。基于岩体力学性质随温度的变化规律，提出了一种考虑高温下岩体非均匀性的热力耦合模拟方法。进行了煤地下气化岩层移动破坏的试块试验研究。结果如下：（1）该方法能够真实反映高温环境下岩体的非均匀性，为高温条件下岩土工程数值模拟提供了一种有效的方法。(2)温度升高后岩体力学性质的变化是引起岩层移动规律变化和煤炭地下气化失败的主要原因。这些因素在地下气化岩层移动破坏的调查中应予以考虑。该研究为高温环境下岩土工程的研究提供了重要手段。
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.
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DOI：
--
发表时间：
1983-02
期刊：
--
影响因子：
--
作者：
O. Min
通讯作者：
O. Min
DOI：
--
发表时间：
2014
期刊：
Journal of China Coal Society
影响因子：
--
作者：
LI Qing-se
通讯作者：
LI Qing-se
DOI：
--
发表时间：
2006
期刊：
Chinese journal of rock mechanics and engineering
影响因子：
--
作者：
Z. Hehua
通讯作者：
Z. Hehua
影响因子：
2.8
作者：
Huaizhan Li;G. Guo;Jianfeng Zha;Yanqing He;Zhiyong Wang;S. Qin
通讯作者：
Huaizhan Li;G. Guo;Jianfeng Zha;Yanqing He;Zhiyong Wang;S. Qin
影响因子：
2.3
作者：
Kotyrba, Andrzej;Stanczyk, Krzysztof
通讯作者：
Stanczyk, Krzysztof