温度-水对深部砂岩动静弹性参数的影响

金属矿山 ›› 2008, Vol. 38 ›› Issue (05): 7-11.

温度-水对深部砂岩动静弹性参数的影响

周莉^1,2，李德建¹，王春光¹

1.中国矿业大学(北京)；2.黑龙江科技学院

收稿日期:2008-03-11 出版日期:2008-05-15 发布日期:2011-07-19
基金资助:
国家重点基础研究发展973计划项目(编号：2006CB202200)；国家自然科学基金重大项目(编号：50490270)；黑龙江省教育厅技术研究项目(编号：11521260)。

Effect of Temperature -Water on Dynamic and Static Elastic Parameters of Sandstone at Depth

Zhou Li^1,2，Li Dejian¹，Wang Chunguang¹

1.China University of Mining & Technology；2.Helongjiang Institute of Science and Technology

Received:2008-03-11 Online:2008-05-15 Published:2011-07-19

摘要/Abstract

摘要： 对鹤岗南山矿深部砂岩干燥与饱水试件在20℃~95℃状态下进行超声波测试，得到深部砂岩在干燥与饱水状态下的弹性波速随温度的变化规律，并与单轴压缩实验所得静弹性参数进行了比较分析，结果表明，当温度从20℃上升到95℃时，通过干燥与饱水状态岩样的弹性波波速呈不同变化趋势，变化幅度差异较大；干燥岩样的波速比小于饱水后的波速比，随着温度的升高，干燥与饱水波速比曲线线形变化较为复杂，变化趋势不尽相同；干燥岩样动、静态弹性模量大于饱水后动、静态弹性模量，且动态弹性模量大于静态弹性模量；干燥与饱水岩样的动、静泊松比变化规律性较差。

关键词: 深部砂岩, 弹性波速, 动静态参数

Abstract: Through the ultrasonic test on the dry and water-saturated samples of deep sandstone of Hegang Nanshan Mine, the variation law of the elastic wave velocity of the sandstone at dry and water saturated states in relation to the temperature was deduced, which was then compared with the static elastic parameter in the uniaxial compression test. The results indicate that when the temperature rises from 20℃to 95℃, the elastic wave velocities of the two samples vary in different trends with greatly different variation scopes. The wave velocity of the dry sandstone is smaller than that of the water-saturated sample, and with the temperature increase, their wave velocity ratio curves become more complex in different variation trends. The dynamic and static elastic moduli of the dry sample are greater than those of the saturated sample, with the dynamic elastic moduli greater than the static ones. The variation of their dynamic and static Poisson's ratios is not regular.

Key words: Sandstone at depth, Elastic wave velocity, Dynamic and static parameters

周莉, 李德建, 王春光. 温度-水对深部砂岩动静弹性参数的影响[J]. 金属矿山, 2008, 38(05): 7-11.

ZHOU Li, LI De-Jian, WANG Chun-Guang. Effect of Temperature -Water on Dynamic and Static Elastic Parameters of Sandstone at Depth[J]. Metal Mine, 2008, 38(05): 7-11.