地质科学
     首页 | 过刊浏览 |  本刊介绍 |  编委会 |  投稿指南 |  期刊征订 |  留言板 |  批评建议 |  联系我们 |  English
地质科学  1998, Vol. Issue (1): 17-24    DOI:
论文 最新目录 | 下期目录 | 过刊浏览 | 高级检索  |   
高温高压下煤超微构造的变形特征
姜波, 秦勇, 金法礼
中国矿业大学资源与环境科学学院, 徐州 221008
DEFORMATION CHARACTERISTICS OF SUPER-MICROSTRUCTURES OF COAL UNDER THE CONDITION OF HIGH TEMPERATURE AND CONFINING PRESSURE
Jiang Bo, Qing Yong, Jin Fali
College of Mineral Resources and Environment Sciences, China University of Mining and Technology, Xuzhou 221008
 全文: PDF (381 KB)   HTML( )   输出: BibTeX | EndNote (RIS)      背景资料
摘要 本文通过不同温、压实验条件下,不同煤级煤的应力-应变曲线及超微变形构造特征分析,深入探讨了不同煤化程度煤的变形行为及其影响因素。阐明了高温高压和差异应力作用是促使煤结构由无序向有序方向转化,使大分子结构有序畴和定向性增大的重要因素。论述了温度和压力在不同的煤级和不同的实验条件下,具有不同的作用。在中煤级阶段,虽然围压的增大可在一定程度上提高煤的强度,但温度的影响更为重要。较高煤级在小应变阶段,温度起主导作用;而到了大变形阶段,围压的作用又逐渐上升到主导地位。在整个变形过程中,定向压力都是不容忽视的重要因素。
服务
把本文推荐给朋友
加入我的书架
加入引用管理器
E-mail Alert
RSS
作者相关文章
姜波
秦勇
金法礼
关键词   高温高压实验   应力-应变曲线   超微构造   透射电子显微镜     
Abstract: According to the analysis of stress-strain curves and deformation characteristics of super microstructures of different rank coals(Ro,max=1.18%-4.11%) that deformed under different conditions of temperature and confining pressure(T=200-700℃,pc=250-650MPa) the paper inquired deep into the deformational behaviors of coals of different degrees of coalification and their influence factors.It is discussed that temperature and pressure have different actions to different rank coals under different experimental conditions.The experimental results showed that strength of all the coal samples decreased along with increasing temperature.It made deformation of coals easier.In contrast,increase of pressure may make coal strength heightened.Although increase of confining pressure may enhance intensity of coals,action of temperature is more important in stage of medium rank coals.Temperature takes a leading effect in stage of less strain of higher rank coals,but action of confining pressure gradually rises into a leading effect in stage of larger strain.The important action of stress can not be ignored in the whole deformation process of coals,especially in aspects of transformation of coal structures from disordering into ordering and increase of the order domain and orientation of megamolecule structures,it is the more important factor.But the ordering evolution of coal structutres is not the same in different rank coals and under the action of different temperature,confining pressure and differential stress.The ordering domain increases slowly when the coal rank is relatively low.The extension degree increases quickly and the orientation is obvious and the megamolecule structures similar to micro column graphite and winkle graphite may form locally.When the coal ranks are higher,the basic structural units are more concentrated and the ordering develops very quickly.The wormy basic structural units,which have more extension degree,may take place.Moreover,the structure of closed rings that is composed of original aromatic clustrs may further be pressed flat.The long axes of the rings are nearly parallel to the strength direction of the basic structural units and the orientation is more obvious.
Key wordsCoal   Experiment of high temperature and confining pressure   Stress-strain curve   Super-microstructure   
收稿日期: 1996-06-27;
基金资助:国家自然科学基金;煤炭科学基金
引用本文:   
姜波,秦勇,金法礼. 1998, 高温高压下煤超微构造的变形特征. 地质科学, (1): 17-24.
Jiang Bo,Qing Yong,Jin Fali. DEFORMATION CHARACTERISTICS OF SUPER-MICROSTRUCTURES OF COAL UNDER THE CONDITION OF HIGH TEMPERATURE AND CONFINING PRESSURE[J]. Chinese Journal of Geology, 1998, (1): 17-24.
 
没有本文参考文献
[1] 许福美 姜琳 鲍道亮 刘明松 邱占林. 龙永煤田童子岩组层序地层格架与聚煤规律研究[J]. 地质科学, 2019, 54(4): 1155-1166.
[2] 赵 萍 李志辉 肖 瑶 袁 峰 李晓晖. 基于高分二号卫星数据的煤矿区地质灾害信息提取研究[J]. 地质科学, 2018, 53(4): 1361-1374.
[3] 李云波 姜 波 屈争辉 . 淮北宿临矿区构造煤中黄铁矿赋存特征及其地质控制[J]. 地质科学, 2017, 52(3): 855-870.
[4] 杜茜诗慧, 周可法, 王金林, 周曙光, 于浩, 孙卫东. 新疆苇湖梁煤矿塌陷区遥感监测研究[J]. 地质科学, 2015, 50(4): 1271-1279.
[5] 曹代勇, 徐浩, 刘亢, 魏迎春, 占文锋, 王信国. 鄂尔多斯盆地西缘煤田构造演化及其控制因素[J]. 地质科学, 2015, 50(2): 410-427.
[6] 张秀芝, 马忠社, 王志军, 谢伟民. 唐山开滦煤矿区Se、Hg元素地球化学特征及其迁移循环规律研究[J]. 地质科学, 2012, 47(3): 908-920.
[7] 敖卫华, 黄文辉, 唐修义, 陈萍. 构造附加动力对煤变质过程的影响[J]. 地质科学, 2012, (2): 517-529.
[8] 卫明明1|2 琚宜文2 薛传东1 侯泉林2. 沁水盆地南部变质变形煤储层特征及煤层气富集区划分[J]. 地质科学, 2011, 46(03): 905-918.
[9] 许福美 吴传始 郭玉森 吴志杰. 闽西南龙永煤田童子岩组沉积地层精细特征与沉积环境演化分析 [J]. 地质科学, 2011, 46(02): 570-584.
[10] 许福美1 黄文辉2 吴传始1 郭玉森1 吴志杰1 敖卫华2. 福建龙永煤田顶峰山井田童子岩组沉积环境及其演化 [J]. 地质科学, 2010, 45(01): 324-332.
[11] 邵龙义, 肖正辉, 汪浩, 鲁静, 周俊. 沁水盆地石炭——二叠纪含煤岩系高分辨率层序地层及聚煤模式[J]. 地质科学, 2008, 43(4): 777-791.
[12] 蔡超, 朱炎铭, 秦勇, 姚海鹏, 陈尚斌. 冀中坳陷武清凹陷苏50井石炭-二叠纪煤系的成烃演化[J]. 地质科学, 2008, (1): 154-161.
[13] 琚宜文, 侯泉林, 姜波, 王桂梁, 方爱民. 淮北海孜煤矿断层与层间滑动构造组合型式及其形成机制[J]. 地质科学, 2006, (1): 35-43.
[14] 琚宜文, 姜波, 王桂梁, 胡超. 层滑构造煤岩体微观特征及其应力应变分析[J]. 地质科学, 2004, (1): 50-62,91.
[15] 曹代勇, 张守仁. 大别山北麓高煤级煤的变形——变质类型[J]. 地质科学, 2003, (4): 470-477.
 
版权所有 © 2009-2017 《地质科学》编辑部
地址:北京9825信箱  邮政编码:100029
电话:010-82998109  010-82998115
京ICP备05029136号-10