• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>Advances on coupled thermo-hydro-mechanical-chemical processes in geosystems and engineering >CREEP OF GRANITE UNDER VARIOUS CONFINING PRESSURES AND TEMPERATURES
【24h】

CREEP OF GRANITE UNDER VARIOUS CONFINING PRESSURES AND TEMPERATURES

机译：各种围压和温度下的花岗岩蠕变

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Understanding the time-dependent strength degradation and associated creep behavior is essential to the safety evaluation of radioactive waste disposal systems. In this study, a series of constant loading tests under different confining pressures and temperatures have been performed to study evolution of dilatancy (damage) and strength degradation of granite with time. At the same stress ratio, increasing the confining pressure, the sample becomes more stable and the strain rate decreases. The dilatancy index D = dε_v~p/dε_p~qrndecreases when the stress ratio increases, but the effect of confining pressure on the dilatancy index is not significant. The results also indicate that the strength of rock will decrease with time exponentially. For the same stress ratio, increasing confining pressure more time is required to fail the rock samples. The effect of temperatures from room temperature (23℃) to 90℃ on the creep behavior of granite is not obvious. Strength degradation with time is due to the degradation of internal material properties, which is attributed to micro-cracking or micro-fracturing.
机译：了解随时间变化的强度下降和相关的蠕变行为对放射性废物处理系统的安全评估至关重要。在这项研究中，已经进行了一系列在不同围压和温度下的恒定载荷试验，以研究随着时间的变化，花岗岩的膨胀（损伤）和强度退化。在相同的应力比下，增加围压，样品变得更稳定，应变率降低。当应力比增加时，剪胀指数D =dε_v〜p /dε_p〜qrn减小，但围压对剪胀指数的影响不显着。结果还表明，岩石的强度将随着时间呈指数下降。对于相同的应力比，增加围压需要更多的时间才能使岩石样品失效。从室温（23℃）到90℃的温度对花岗岩蠕变行为的影响并不明显。强度随时间的下降是由于内部材料性能的下降，这归因于微裂纹或微裂纹。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号