浸水时间对饱水岩石纵波波速影响的试验研究  

The Experiment Research for the Influence of Immersion Time on Wave Velocity of Saturated Rocks

作　　者：夏冬[1,2] 常宏 卢宏建[1,2] 袁雪涛[1,2] 

机构地区：[1]华北理工大学矿业工程学院,河北唐山市063009 [2]华北理工大学河北省矿业开发与安全技术重点实验室,河北唐山市063009 [3]河北钢铁集团沙河中关铁矿有限公司,河北沙河市054100

出　　处：《矿业研究与开发》2016年第1期68-71,共4页Mining Research and Development

基　　金：国家重点基础研究发展计划项目(2013CB227902);国家自然科学基金项目(51174045;51304036);河北省自然科学基金项目(E2014209093)

摘　　要：为探究浸水时间对饱水岩石纵波波速的影响规律，对天然状态、饱水状态及浸水时间分别为1，7，14，30，60d和90d的饱水闪长岩和饱水灰岩岩样进行纵波波速测试，试验结果表明：浸水时间对饱水闪长岩和饱水灰岩纵波波速的影响规律基本一致，即浸水时间不长（1～14d）时，纵波波速随浸水时间的增加其值降低幅度较大；浸水时间较长（14～60d）时，纵波波速随浸水时间的增加其值降低幅度逐渐较小；浸水时间超过60d后，纵波波速趋于稳定。To investigate the influence of immersion time on the wave velocity of saturated rocks, the wave velocities of diorite and limestone were tested in natural state and saturated state, as well as the immersion time of 1, 7, 14, 30, 60 d and 90 d. The tests results showed that the immersion time had the same influence on the wave velocities of two different rocks. The wave velocity decreased significantly with the increase of immersion time when the immersion time was not too long （from 1 d to 14 d）, but reduced with relatively less acceleration in the range of 14 d to 60 d. When the immer-sion time was beyond 60 d, the velocity tended to be stable.

关 键 词：饱水岩石 浸水时间 闪长岩 灰岩 纵波波速 

分 类 号：TD313[矿业工程—矿井建设]