| 沁水盆地煤岩高温高压实验变形特征 |
| |
| 引用本文： | 杨光,刘俊来,马瑞.沁水盆地煤岩高温高压实验变形特征[J].吉林大学学报(地球科学版),2006,36(3):346-350. |
| |
| 作者姓名： | 杨光 刘俊来 马瑞 |
| |
| 作者单位： | 1．吉林大学 地球科学学院,长春 130061;2.中国地质大学 地球科学学院,北京 100083 |
| |
| 摘 要： | 对沁水盆地不同地区选取的5组煤岩样品进行高温高压变形实验，结果证实，在相同的实验条件下,(1)采自不同地区的煤岩强度在较低温压条件下表现出一致性，在较高温压条件下显现出差异性;(2)高煤级煤No.3煤样在某一温压条件下（100℃、100MPa）,应力应变强度都是最低的,为煤岩组分影响的结果。在不同的实验条件下, 煤岩在高温高压条件下（温压大于200℃、200MPa）,随着温度与围压增高,应力应变强度在降低,但这主要是温度影响的结果。在温压为100℃、100MPa和500℃、500MPa时，煤岩应力应变强度均很低，但却存在着本质的差别:前者产生的应力应变强度只有部分真实地代表了煤岩的强度（应变量ε<3％），而持续的应力应变强度（应变量ε>3％）则是围压作用的结果;后者煤岩低应力应变强度显示出明显的韧性状态, 主要表现在温度对煤岩产生的影响。
|
| 关 键 词： | 煤层气 变形实验 应力应变曲线 煤岩组成 |
| 文章编号： | 1671-5888(2006)03-0346-05 |
| 收稿时间： | 2005-08-08 |
| 修稿时间： | 2005年8月8日 |
Deformation Characteristics of Coals From Qinshui Basin Through High-temperature and Confining Pressure Experiment |
| |
| YANG Guang,LIU Jun-lai,MA Rui.Deformation Characteristics of Coals From Qinshui Basin Through High-temperature and Confining Pressure Experiment[J].Journal of Jilin Unviersity:Earth Science Edition,2006,36(3):346-350. |
| |
| Authors: | YANG Guang LIU Jun-lai MA Rui |
| |
| Institution: | 1.College of Earth Sciences, Jilin University, Changchun 130061, China;2. Faculty of Earth Sciences, China University of Geosciences, Beijing 100083, China |
| |
| Abstract: | Through high temperature and confining pressure deformation experiments on the five sets of coal samples from the Qinshui Basin, it is clearly seen that the stress strain intensities of the different coal samples are nearly the same under the conditions of lower temperature and lower pressure and are different under higher temperature and higher pressure. The intensity of higher rank coal such as the No.3 sample is the lowest under certain temperature and pressure (100℃/100 MPa), which might be related to the effect of maceral. The stress strain intensities of coal samples are negatively related to temperature under high temperature and high pressure (temperature is larger than 200℃ and pressure is larger than 200 MPa). The stress strain intensities of coal samples are very low under the conditions of 100℃/100 MPa and 500℃/500 MPa but with intrinsic differences for the two conditions. The stress strain intensity of coal samples under 100℃/100 MPa condition only represents part of the real intensity of the coal samples when strain (ε) is less than 3% and the persistent stress strain intensities of coal samples(ε>3%) might show the effect of the confined pressure. But the stress strain intensity of coal samples under the condition of 500℃/500 MPa is very low, which shows some malleable characteristics of the coal samples resulting from the effect of temperature on the coal samples. |
| |
| Keywords: | coal bed gas deformation experiment stress-strain curve maceral |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《吉林大学学报(地球科学版)》浏览原始摘要信息 |
| 点击此处可从《吉林大学学报(地球科学版)》下载免费的PDF全文 |
